Android 学习实例 Note

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</pre><wbr><span style="font-size:18px;">      身为一个软件工程的学生，每个学期都要做一个课程设计，本次学期的课程设计就是做一个简单的Android实例。因为怕麻饭就选了最最最最简单的笔记本儿了，不记得是哪位说了？所有学Android的第一个就是笔记本儿~哎哎。   噗。。。你怎么废话那么多！！！ 。。。----------------------------------我是正经的分割线--------------------------------------------------------------------------------</span><strong><span style="font-size:24px;">目录1，功能介绍2，UI设计3，类图4，代码实现</span></strong><span style="font-size:18px;">----------------------------------我是目录的分割线--------------------------------------------------------------------------------<strong>1，功能介绍</strong>1.1 密码功能 包括：登录输入，设置密码，修改密码，删除密码1.2 文本功能 可以增加一篇文本，修改文本，删除文本，插入图片，删除图片1.3  数据库  对数据库进行操作 包括</span><span style="font-size:18px;"><span style="font-size:18px;">----------------------------------我是无聊的分割线--------------------------------------------------------------------------------</span><strong>2，UI设计</strong></span><div align="center"><span style="font-size:18px;"><span style="font-size:18px;">登录界面</span></span></div><div align="center"><div><img title="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" alt="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" src="http://img1.ph.126.net/fuSN2zw-NdKfykjmAEM4MA==/4909486543888150783.png" style="margin:0 10px 0 0" /></div> </div><div align="center"><span style="font-size:18px;"><span style="font-size:18px;">密码操作界面</span></span></div><div align="center"><div><img title="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" alt="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" src="http://img2.ph.126.net/EaQztFhAWLAFWdGh8Scnjw==/1626925365490718147.png" style="margin:0 10px 0 0" /></div><span style="font-size:18px;"><span style="font-size:18px;">主界面</span></span></div><div align="center"><div><img title="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" alt="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" src="http://img0.ph.126.net/ed7noxlsh6Ky_DRLDB5r3w==/1156862154382548738.png" style="margin:0 10px 0 0" /></div> </div><div align="center"><span style="font-size:18px;"><span style="font-size:18px;">编辑界面</span></span></div><div align="center"><div><img title="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" alt="【Android实例】TimeLinessNotes笔记本 - m18874489115 - Rindia的干活区" src="http://img1.ph.126.net/2HRv-B8jdKpW9f7RI9JCnQ==/6631555948861649296.png" style="margin:0 10px 0 0" /></div> </div><span style="font-size:18px;"></span><span style="font-size:18px;"><span style="font-size:18px;">----------------------------------我是讨厌的分割线--------------------------------------------------------------------------------3.类图</span></span><span style="font-size:18px;"><span style="font-size:18px;">----------------------------------我是（QAQ）的分割线--------------------------------------------------------------------------4.代码实现4.1.1 登录界面XML</span></span><pre name="code" class="html"></pre><pre name="code" class="html"><pre name="code" class="html"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg_sky"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" >

        <LinearLayout
            android:id="@+id/ly"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:orientation="horizontal" >

            <TextView
                android:id="@+id/textView2"
                android:layout_width="70dp"
                android:layout_height="wrap_content"
                android:gravity="bottom"
   
                android:background="@drawable/tv_password" />

            <EditText
                android:id="@+id/ed_password"
                android:layout_width="150dp"
                android:layout_height="wrap_content"
                android:gravity="top|left"
                android:ems="10"
                android:inputType="textPassword"
                android:background="@drawable/edv_line" />
        </LinearLayout>
		
        <com.wl.android.myeditView.MyImageView
            android:id="@+id/img_user"
            android:layout_width="110dp"
            android:layout_height="110dp"
            android:layout_above="@id/ly"
            android:layout_centerHorizontal="true"
            android:layout_marginBottom="20dp"
            android:src="@color/grayPuples" />
     <com.wl.android.myeditView.MyImageView
            android:id="@+id/anmitor"
            android:layout_width="110dp"
            android:layout_height="110dp"
            android:layout_above="@id/ly"
            android:layout_centerHorizontal="true"
            android:layout_marginBottom="20dp"
            android:src="@drawable/img_user_login" /> 
     
      <TextView
        android:id="@+id/tv_frogivelogin"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="right"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="10dp"
        android:layout_marginRight="10dp"
        android:text="忘记密码？"
        android:textColor="@drawable/move_btn"
        android:textSize="20dp" />
    </RelativeLayout>

   

</LinearLayout>

<pre name="code" class="html"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg_green_02"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp"
        android:background="@color/grayGreen_alph70" >

        <Button
            android:id="@+id/btn_menu"
            android:layout_width="60dp"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"
            android:background="@color/nocolor"
            android:text="菜单"
            android:textColor="@drawable/move_btn_menu"
            android:textSize="20dp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_centerInParent="true"
            android:gravity="center_vertical"
            android:text="TimelineNote"
            android:textColor="@color/white"
            android:textSize="25dp" />

        <Button
            android:id="@+id/btn_add"
            android:layout_width="60dp"
            android:layout_height="match_parent"
            android:layout_alignParentRight="true"
            android:background="@color/nocolor"
            android:text="新增"
            android:textColor="@drawable/move_btn_menu"
            android:textSize="20dp" />
    </RelativeLayout>

    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:dividerHeight="0dp" />

</LinearLayout>

4.1.3 密码界面XML

<?xml version="1.0" encoding="utf-8"?>
//顶部栏
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg_flower"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_gravity="top"
        android:background="@color/blue_light" >

        <Button
            android:id="@+id/btn_resist_cancle"
            android:layout_width="50dp"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"
            android:background="@color/nocolor"
            android:text="返回"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_centerInParent="true"
            android:gravity="center_vertical"
            android:text="设置密码"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />

    </RelativeLayout>

 <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:orientation="vertical" >
//设置密码时显示的内容
 <LinearLayout
        android:id="@+id/ly_set_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:visibility="gone"
        android:orientation="vertical" >

        <TextView
            android:layout_width="230dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:text="密码"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />

        <EditText
            android:id="@+id/resist_password"
            android:layout_width="230dp"
            android:layout_height="40dp"
            android:layout_marginTop="10dp"
            android:background="@color/blue_light" />

        <TextView
            android:layout_width="230dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:text="密保问题"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />

        <EditText
            android:id="@+id/resist_question"
            android:layout_width="230dp"
            android:layout_height="40dp"
            android:layout_marginTop="10dp"
            android:background="@color/blue_light" />

        <TextView
            android:layout_width="230dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:text="答案"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />

        <EditText
            android:id="@+id/resist_answer"
            android:layout_width="230dp"
            android:layout_height="40dp"
            android:layout_marginTop="10dp"
            android:background="@color/blue_light" />
    </LinearLayout>
//修改密码 和 删除密码时显示的内容
    <LinearLayout
        android:id="@+id/ly_ensure_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:visibility="gone"
        android:orientation="vertical" >
		 <TextView
            android:layout_width="230dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:text="请输入密码"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />
        <EditText
            android:id="@+id/edt_ensure_password"
            android:layout_width="230dp"
            android:layout_height="40dp"
            android:layout_marginTop="10dp"
            android:password="true"
            android:background="@color/blue_light" />
        <TextView
            android:id="@+id/tv_forgive"
            android:layout_width="230dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:text="忘记密码？"
            android:textColor="@drawable/move_btn"
            android:textSize="20dp" />
    </LinearLayout>
//忘记密码是显示的内容
    <LinearLayout
        android:id="@+id/ly_answerquestion"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:visibility="gone"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/tv_answer_question"
            android:layout_width="230dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:text="what is your name?"
            android:textColor="@color/blue_nature"
            android:textSize="20dp" />

        <EditText
            android:id="@+id/ed_answer_question"
            android:layout_width="230dp"
            android:layout_height="40dp"
            android:layout_marginTop="10dp"
            android:background="@color/blue_light" />
    </LinearLayout>
<Button
    android:id="@+id/btn_ensure"
    android:layout_width="100dp"
     android:layout_height="30dp"
     android:layout_marginTop="5dp"
     android:text="下一步"
     android:gravity="center"
     android:textColor="@color/blue_nature"
     android:background="@color/blue_light" />
</LinearLayout>
</LinearLayout>

4.1.4 编辑界面XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg_plante"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/edit"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:background="@color/grayBlown_alph70" >

        <Button
            android:id="@+id/back"
            android:layout_width="60dp"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"
            android:background="@color/nocolor"
            android:text="取消"
            android:textColor="@drawable/cancle_btn_x"
            android:textSize="20dp" />

        <TextView
            android:id="@+id/showdate"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:text="2016/5/23"
            android:textColor="@color/white"
            android:textSize="25dp" />

        <Button
            android:id="@+id/ok"
            android:layout_width="60dp"
            android:layout_height="match_parent"
            android:layout_alignParentRight="true"
            android:background="@color/nocolor"
            android:text="保存"
            android:textColor="@drawable/cancle_btn_x"
            android:textSize="20dp" />
    </RelativeLayout>
//文本编辑区
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="20dp"
        android:layout_weight="1"
        android:orientation="vertical" >

        <com.wl.android.myeditView.MyEditView
            android:id="@+id/edittitle"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="30dp"
            android:layout_marginRight="30dp"
            android:padding="10dp"
            android:singleLine="true"
            android:textColor="@color/grayBlown_press"
            android:textSize="30dp" />

        <com.wl.android.myeditView.MyEditView
            android:id="@+id/editcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginTop="20dp"
            android:background="@color/nocolor"
            android:ems="10"
            android:gravity="top"
            android:padding="10dp"
            android:textColor="@color/grayBlown_press"
            android:textSize="30dp" >

            <requestFocus />
        </com.wl.android.myeditView.MyEditView>
    </LinearLayout>
//图片增加区
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white" >

        <Button
            android:id="@+id/addpicture"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_marginTop="3dp"
            android:background="@drawable/img_view_top"
            android:gravity="center" />
    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/imagewindow"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:background="@drawable/img_view"
        android:orientation="vertical"
        android:visibility="gone" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:orientation="horizontal" >

            <ImageView
                android:id="@+id/imageView0"
                android:layout_width="match_parent"
                android:layout_height="94dp"
                android:layout_margin="3dp"
                android:layout_weight="1"
                android:scaleType="fitCenter"
                android:src="@drawable/img_add_x" />

            <ImageView
                android:id="@+id/imageView1"
                android:layout_width="match_parent"
                android:layout_height="94dp"
                android:layout_margin="3dp"
                android:layout_weight="1"
                android:scaleType="fitCenter"
                android:src="@drawable/img_add_x" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:orientation="horizontal" >

            <ImageView
                android:id="@+id/imageView2"
                android:layout_width="match_parent"
                android:layout_height="94dp"
                android:layout_margin="3dp"
                android:layout_weight="1"
                android:scaleType="fitCenter"
                android:src="@drawable/img_add_x" />

            <ImageView
                android:id="@+id/imageView3"
                android:layout_width="match_parent"
                android:layout_height="94dp"
                android:layout_margin="3dp"
                android:layout_weight="1"
                android:scaleType="fitCenter"
                android:src="@drawable/img_add_x" />
        </LinearLayout>
    </RelativeLayout>

</LinearLayout>

4.2.1 LoginActivity

package com.example.timelinenote;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.drawable.Animatable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.AnimationUtils;
import android.view.animation.CycleInterpolator;
import android.view.animation.ScaleAnimation;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.wl.android.DateSQLite.DateSQlite;
import com.wl.android.animation.MyAnimation;

public class LoginActivity extends Activity implements OnClickListener{
		//判断输入密码的正确与误时进行的操作
		Handler handler = new Handler(){
		@Override
		public void handleMessage(Message msg) {
			// TODO 自动生成的方法存根
			super.handleMessage(msg);
			if (1 == msg.what) {
				Toast.makeText(LoginActivity.this, "登录成功！",
						Toast.LENGTH_SHORT).show();
				Intent intent = new Intent(LoginActivity.this, IndexActivity.class);
				LoginActivity.this.startActivity(intent);
				LoginActivity.this.finish();
			}else if (2 == msg.what) {
				Toast.makeText(LoginActivity.this, "请重新登录！",
						Toast.LENGTH_SHORT).show();
				miv_user.startAnimation(mAnimation.ButtonClickClose());
					new Timer().schedule(new TimerTask() {
								@Override
								public void run() {
									// TODO 自动生成的方法存根
									handler.sendEmptyMessage(3);
								}
							}, 1000);
			}else if (3 == msg.what) {
				miv_user.startAnimation(mAnimation.setAnimationSet());
			}
		}
	};
		
	DateSQlite mSQL;
	String mstrPassword;
	ImageView miv_user;
	MyAnimation mAnimation;
	TextView mtv_forget;
	protected void onCreate(Bundle savedInstanceState) {
			// TODO 自动生成的方法存根
			super.onCreate(savedInstanceState);
			setContentView(R.layout.login);
			mSQL = new DateSQlite(this);
			//获得数据库中的密码
				try {
					Cursor cursor = mSQL.getInformation();
					cursor.moveToFirst();
					mstrPassword = cursor.getString(mSQL.KEY);
					System.out.println(mstrPassword);
					cursor.close();
				} catch (Exception e) {
					// TODO: handle exception
					System.out.println("无密码或密码获取错误"); 
					mstrPassword = "0";
				}
				mAnimation = new MyAnimation();
			miv_user = (ImageView) findViewById(R.id.img_user);
			mtv_forget = (TextView) findViewById(R.id.tv_frogivelogin);
			mtv_forget.setOnClickListener(this);
			miv_user.setOnClickListener(this);
                        //给头像增加动画
                       miv_user.setAnimation(mAnimation.setAnimationSet());
		}
	 

		@Override
		public void onClick(View v) {
			switch (v.getId()) {
			case R.id.img_user:
			
				miv_user.startAnimation(mAnimation.ButtonClickOpen());
				new Timer().schedule(new TimerTask() {
					
					@Override
					public void run() {
						// TODO 自动生成的方法存根
						logIn();
					}
				}, 1500);
				
				break;
			case R.id.tv_frogivelogin:
				Intent intent = new Intent(LoginActivity.this, ResistitActivity.class);
				intent.putExtra("type", "4");
				LoginActivity.this.startActivity(intent);
			default:
				break;
			}
		}
		//判断密码输入是否正确
		public void logIn() {
			
			new Thread(){
				
				public void run() {
					String strPassword = ((EditText)findViewById(R.id.ed_password)).getText().toString();
                
                                      if ((!mstrPassword.equals("0")) && strPassword.equals(mstrPassword)) {//有密码的情况且正确
						handler.sendEmptyMessage(1);
					}else if (mstrPassword.equals("0")) {//没有密码的情况
						handler.sendEmptyMessage(1);
					}else {
						handler.sendEmptyMessage(2);//有密码但错误
					}
					
				};
			}.start();
		}
		
}

4.2.2 IndexActivity

package com.example.timelinenote;

import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;

import com.wl.android.DateSQLite.DateSQlite;
import com.wl.android.enpty.Logs;
import com.wl.android.myadapter.Myadapter;


public class IndexActivity extends Activity implements OnClickListener,OnItemClickListener,OnItemLongClickListener{

	private ListView mlistview;
	ArrayList<Logs> mlistLogs = new ArrayList<Logs>();
	final int HEADER_CODE = 1;
	DateSQlite mSQL;
	android.widget.PopupMenu mpopupMenu = null;
	Button mbtnMenu;
	Typeface mTypeface_HM;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_index);
        
        mTypeface_HM = Typeface.createFromAsset(getAssets(), "fonts/Hym.ttf");//设置字体
        mlistview = (ListView) findViewById(R.id.listview);
        View ListViewHeader = View.inflate(this, R.layout.listview_header, null);
        mlistview.addHeaderView(ListViewHeader);
        Button addbButton = (Button) findViewById(R.id.btn_add);
        mbtnMenu = (Button) findViewById(R.id.btn_menu);
        mSQL = new DateSQlite(this);


		initDatas();
        addbButton.setOnClickListener(this);
        mlistview.setOnItemClickListener(this);
        mlistview.setOnItemLongClickListener(this);
        mbtnMenu.setOnClickListener(this);
        try {//从数据库中获得内容
			mlistLogs = mSQL.getLogs();
			initDatas();
		} catch (Exception e) {
			// TODO: handle exception
		}
    }
    //往listView中填充内容
    private void initDatas() {
		// TODO 自动生成的方法存根
        Myadapter myadapter = new Myadapter(mlistLogs, this);
        mlistview.setAdapter(myadapter);
	}

	@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    	// TODO 自动生成的方法存根
    	super.onActivityResult(requestCode, resultCode, data);
    	//对EditView中传递的内容进行操作
    		if (0 == resultCode) {
    			Bundle bundle = data.getExtras();
    			Logs dateLogs = (Logs) (bundle.get("Logs"));
    			Boolean isedit = data.getExtras().getBoolean("isedit");
    			int position = data.getExtras().getInt("position");
    			if (isedit) {
    				mlistLogs.remove(position - HEADER_CODE);
    				mlistLogs.add(position - HEADER_CODE,dateLogs);
    			}else {
    				//listview 增加  header 之后产生的1个位子的位移
    				mlistLogs.add(0,dateLogs);
    			}
			}
			initDatas();
		
    }
			@Override
			protected void onPause() {
				// TODO 自动生成的方法存根
				super.onPause();
				mSQL.insertLogs(mlistLogs);
			}
             //点击listViewItem时的反应
        @Override
	public void onItemClick(AdapterView<?> parent, View view, int position,
			long id) {
		// TODO 自动生成的方法存根
		if (0 != position) {
			
			Intent intent = new Intent(IndexActivity.this, EditActivity.class);
			intent.putExtra("isadd", false);//通知EditActivity不是增加内容
			intent.putExtra("position", position);
			intent.putExtra("Logs", mlistLogs.get(position - HEADER_CODE));//这个减去Header_code是为了防止点击listView的Header
			startActivityForResult(intent, 0);
		}
			
		
		
	}
      //顶部栏按钮的监听事件
	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btn_add:
			Intent intent = new Intent();
	    	intent.setClass(IndexActivity.this, EditActivity.class);
	    	IndexActivity.this.startActivityForResult(intent, 0);
	    	overridePendingTransition(R.anim.slide_in_right,R.anim.slide_out_left);//Activity跳转的动画
			break;
		case R.id.btn_menu:
			PopupMenu(mbtnMenu);
		default:
			break;
		}
		
	}
                //长按删除日志
	@Override
	public boolean onItemLongClick(AdapterView<?> parent, View view,
			int position, long id) {

		AlertDialog.Builder deleteBuilder = new AlertDialog.Builder(this);
		deleteBuilder.setMessage("你确定删除这篇日记吗？");
		final int KEY = position - HEADER_CODE;
		
		deleteBuilder.setPositiveButton("确定",new DialogInterface.OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				mSQL.deleteLog(mlistLogs.get(KEY));
				mlistLogs.remove(KEY);
				initDatas();
			}
		});
		deleteBuilder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO 自动生成的方法存根
				
			}
		});
		deleteBuilder.create();
		deleteBuilder.show();
		return true;
	}
   //设置密码的菜单
	public void PopupMenu(View button)
	{
		
		mpopupMenu = new PopupMenu(this, button);
		getMenuInflater().inflate(R.menu.menu, mpopupMenu.getMenu());
		mpopupMenu.setOnMenuItemClickListener(new OnMenuItemClickListener() {
			
			@Override
			public boolean onMenuItemClick(MenuItem item) {
				Intent intent = new Intent(IndexActivity.this, ResistitActivity.class);
				switch (item.getItemId()) {
				case R.id.menu_im_setPassword:
					intent.putExtra("type", "1");
					IndexActivity.this.startActivity(intent);
					break;
				case R.id.menu_im_alterPassword:
					intent.putExtra("type", "2");
					IndexActivity.this.startActivity(intent);
					break;
				case R.id.menu_im_deletePassword:
					intent.putExtra("type", "3");
					IndexActivity.this.startActivity(intent);
					break;
				default:
					break;
				}
				
				return false;
			}
		});
		mpopupMenu.show();
		
	}
	
}

4.2.3 ResistActivity

package com.example.timelinenote;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.wl.android.DateSQLite.DateSQlite;

public class ResistitActivity extends Activity implements OnClickListener {
	DateSQlite db;
	EditText resistPassword;
	EditText resisqustion;
	EditText resistanswer;
	LinearLayout ly_ensure_mPassword;
	LinearLayout ly_set_mPassword;
	LinearLayout ly_answer_mQuestion;
	private String mPassword;
	private String mQuestion;
	private String mKey;

	protected void onCreate(Bundle savedInstanceState) {
		// TODO 自动生成的方法存根
		super.onCreate(savedInstanceState);
		setContentView(R.layout.resist);
		ly_ensure_mPassword = (LinearLayout) findViewById(R.id.ly_ensure_password);
		ly_answer_mQuestion = (LinearLayout) findViewById(R.id.ly_answerquestion);
		ly_set_mPassword = (LinearLayout) findViewById(R.id.ly_set_password);
		resistPassword = (EditText) findViewById(R.id.resist_password);
		resisqustion = (EditText) findViewById(R.id.resist_question);
		resistanswer = (EditText) findViewById(R.id.resist_answer);
		
		findViewById(R.id.btn_resist_cancle).setOnClickListener(this);
		db = new DateSQlite(this);
		Intent intent = getIntent();
		String typeString = intent.getStringExtra("type");
		try {
			Cursor cursor = db.getInformation();
			cursor.moveToFirst();
			  mPassword = cursor.getString(db.PASSWORD);
			  mQuestion = cursor.getString(db.QUESTION);
			  mKey = cursor.getString(db.KEY);
		} catch (Exception e) {
			// TODO: handle exception
			mPassword = "0";
			mQuestion = "0";
			mKey = "0";
		}
		if (typeString.equals("1")) {
			if (mPassword.equals("0")) {
				setPassword();
			}else {
				Toast.makeText(ResistitActivity.this, "密码已经设置了哦！", Toast.LENGTH_LONG).show();
			}
		} else if (typeString.equals("2")) {
			alterPassword();
		} else if (typeString.equals("3")) {
			deletePassword();
		}else {
			FogivePassword();
		}
		
	}

	private void deletePassword() {
		// TODO 自动生成的方法存根
		ly_ensure_mPassword.setVisibility(View.VISIBLE);
		TextView tv_answer = (TextView) findViewById(R.id.tv_forgive);
		
		tv_answer.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO 自动生成的方法存根
				FogivePassword();
				ly_ensure_mPassword.setVisibility(View.GONE);
				return;
			}
		});
		
		Button btn_ensure = (Button) findViewById(R.id.btn_ensure);
		btn_ensure.setOnClickListener( new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO 自动生成的方法存根
				EditText edt_ensur = (EditText) findViewById(R.id.edt_ensure_password);
				final String ed_mPassword = edt_ensur.getText().toString();
				if (ed_mPassword.equals(mPassword)) {
					db.deleteUser();
					Toast.makeText(ResistitActivity.this, "密码删除成功", Toast.LENGTH_LONG).show();
					findViewById(R.id.ly_ensure_password).setVisibility(View.GONE);
				}else {
					Toast.makeText(ResistitActivity.this, "密码错误", Toast.LENGTH_LONG).show();
				}
			}
		});
		
	}

	private void alterPassword() {
		// TODO 自动生成的方法存根
		ly_ensure_mPassword.setVisibility(View.VISIBLE);
		TextView tv_answer = (TextView) findViewById(R.id.tv_forgive);
		
		tv_answer.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO 自动生成的方法存根
				FogivePassword();
				ly_ensure_mPassword.setVisibility(View.GONE);
				return;
			}
		});
		
		Button btn_ensure = (Button) findViewById(R.id.btn_ensure);
		btn_ensure.setOnClickListener( new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO 自动生成的方法存根
				EditText edt_ensur = (EditText) findViewById(R.id.edt_ensure_password);
				String ed_mPassword = edt_ensur.getText().toString();
				if (ed_mPassword.equals(mPassword)) {
					setPassword();
					ly_ensure_mPassword.setVisibility(View.GONE);
				}else {
					Toast.makeText(ResistitActivity.this, "密码错误", Toast.LENGTH_LONG).show();
				}
			}
		});
		
	}

	private void setPassword() {
		ly_set_mPassword.setVisibility(View.VISIBLE);
			Button btn_ensure = (Button) findViewById(R.id.btn_ensure);
			btn_ensure.setText("确定");
			btn_ensure.setOnClickListener( new OnClickListener() {
				
				@Override
				public void onClick(View v) {
					// TODO 自动生成的方法存根
					risistmPassword();
					Toast.makeText(ResistitActivity.this, "密码设置成功", Toast.LENGTH_LONG).show();
					ResistitActivity.this.finish();
				}
			});
	}
	private void FogivePassword()
	{
		ly_answer_mQuestion.setVisibility(View.VISIBLE);
	
		TextView tv_qusetion = (TextView) findViewById(R.id.tv_answer_question);
		tv_qusetion.setText(mQuestion);
		
		Button btn_ensure = (Button) findViewById(R.id.btn_ensure);
		btn_ensure.setOnClickListener( new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO 自动生成的方法存根
				EditText ed_answer = (EditText) findViewById(R.id.ed_answer_question);
				String answersString = ed_answer.getText().toString();
				if (answersString.equals(mKey)) {
					Toast.makeText(ResistitActivity.this, "恭喜回答正确", Toast.LENGTH_LONG).show();
					ly_answer_mQuestion.setVisibility(View.GONE);
					setPassword();
				}else {
					Toast.makeText(ResistitActivity.this, "回答错误呢！", Toast.LENGTH_LONG).show();
				}
				
			}
		});
		
	}
	private Boolean getInf() {
		try {
			Cursor cursor = db.getInformation();
			cursor.moveToFirst();
			mPassword = cursor.getString(db.KEY);
			mQuestion = cursor.getString(db.QUESTION);
			mKey = cursor.getString(db.KEY);
			cursor.close();
			
		} catch (Exception e) {
			// TODO: handle exception
			System.out.println("无密码或密码获取错误");
			return false;
		}
		return true;
	}

	@Override
	public void onClick(View v) {
		// TODO 自动生成的方法存根
		switch (v.getId()) {
		case R.id.btn_resist_cancle:
			this.finish();
		default:
			break;
		}
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO 自动生成的方法存根
		super.onActivityResult(requestCode, resultCode, data);
	}

	private boolean risistmPassword() {
		// TODO 自动生成的方法存根
		String mPassword = resistPassword.getText().toString();
		String mQuestion = resisqustion.getText().toString();
		String mKey = resistanswer.getText().toString();
		db.insertInformation(mPassword, mQuestion, mKey);
		return true;
	}

}

4.2.4 EditActivity

package com.example.timelinenote;

import java.sql.Date;
import java.text.SimpleDateFormat;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Typeface;
import android.os.Bundle;
import android.text.style.TypefaceSpan;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.wl.android.DateSQLite.DateSQlite;
import com.wl.android.enpty.GetPictureFormCAMER;
import com.wl.android.enpty.Logs;
import com.wl.android.myeditView.MyEditView;

public class EditActivity extends Activity implements OnClickListener,
		OnTouchListener, OnLongClickListener {

	Logs mLogs;
	MyEditView medt_title;
	MyEditView medt_content;
	Button mbtn_back;
	Button mbtn_right;
	Button mbtn_addPicture;
	String mstrTitle;
	String mstrContent;
	String mstrDate;
	TextView mtv_showDate;
	String[] mstrImgList = { "0", "0", "0", "0" };
	RelativeLayout mRL_imgGroup;
	GetPictureFormCAMER mGetPicture;
	int[] mintImgId = { R.id.imageView0, R.id.imageView1, R.id.imageView2,
			R.id.imageView3 };
	int mintFlat = 0;
	int mintImgFlat = 0;
	final String BTN_SAVE = "save";
	final String BTN_ALTER = "alter";
	final int CAMERA = 120;
	int position;
	Boolean isadd = true;
	Typeface mTypeface_HM;
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		View parentView = View.inflate(getBaseContext(), R.layout.editview,
				null);
		setContentView(parentView);
		mTypeface_HM = Typeface.createFromAsset(getAssets(), "fonts/Hym.ttf");
		mLogs = new Logs();
		medt_title = (MyEditView) findViewById(R.id.edittitle);
		mtv_showDate = (TextView) findViewById(R.id.showdate);
		medt_content = (MyEditView) findViewById(R.id.editcontent);
		
		medt_title.setTypeface(mTypeface_HM);
		medt_content.setTypeface(mTypeface_HM);
		mtv_showDate.setTypeface(mTypeface_HM);
		mbtn_back = (Button) findViewById(R.id.back);

		mbtn_right = (Button) findViewById(R.id.ok);
		mbtn_right.setTag(BTN_SAVE);
		mbtn_addPicture = (Button) findViewById(R.id.addpicture);

		mRL_imgGroup = (RelativeLayout) findViewById(R.id.imagewindow);
		
		
		medt_content.setOnTouchListener(this);
		mGetPicture = new GetPictureFormCAMER(this);
		SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy/hhmmss");
		Date date = new Date(System.currentTimeMillis());
		mstrDate = format.format(date);
		mtv_showDate.setText(mstrDate);
		if (null != getIntent().getExtras()) {
			mLogs = (Logs) getIntent().getExtras().get("Logs");
			isadd = getIntent().getExtras().getBoolean("isadd");
			position = getIntent().getExtras().getInt("position");
			if (null != mLogs) {
				mbtn_right.setText("修改");
				mbtn_right.setTag(BTN_ALTER);
				mstrTitle = mLogs.getTitleView();
				mstrContent = mLogs.getTextView();
				mstrImgList = mLogs.getUrList();
				medt_title.setText(mstrTitle);
				medt_content.setText(mstrContent);
				for (int i = 0; i < 4; i++) {
					if (!mstrImgList[i].equals("0")) {
						Bitmap bitmap = mGetPicture
								.takePictureFormName(mstrImgList[i]);
						if (null != bitmap) {
							ImageView imageView = (ImageView) findViewById(mintImgId[i]);
							imageView.setImageBitmap(bitmap);
						}
					}
				}
				medt_title.setEnabled(false);
				medt_content.setEnabled(false);
			}
		}
		mbtn_back.setOnClickListener(this);
		mbtn_right.setOnClickListener(this);
		mbtn_addPicture.setOnClickListener(this);
		parentView.setOnTouchListener(this);
		medt_content.setOnTouchListener(this);
		for (int i = 0; i < mintImgId.length; i++) {
			ImageView imageView = (ImageView) findViewById(mintImgId[i]);
			imageView.setOnClickListener(this);
			imageView.setOnLongClickListener(this);
		}

	}

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		if (0 == requestCode) {
			return ;
		}
		Bitmap bitmap = mGetPicture.getPictureFromResult(resultCode,
				requestCode, data);
		if (null == bitmap) {
			return;
		}
		String name_R = mGetPicture.getname();
		Toast.makeText(this, name_R, Toast.LENGTH_LONG).show();

		ImageView imageView = (ImageView) findViewById(mintImgId[mintImgFlat]);
		imageView.setImageBitmap(bitmap);
		mstrImgList[mintImgFlat] = name_R;

	}
	private void saveOn() {
		mstrTitle = medt_title.getText().toString();
		mstrContent = medt_content.getText().toString();
		mLogs.setTitleView(mstrTitle);
		mLogs.setTextView(mstrContent);
		mLogs.setDate(mstrDate);
		mLogs.setUrList(mstrImgList);

		if (true == isadd) {
			Intent intent = getIntent();
			intent.putExtra("Logs", mLogs);
			Bundle bundle = new Bundle();
			EditActivity.this.setResult(0, intent);
			
		} else {
			Intent intent = new Intent();
			intent.putExtra("Logs", mLogs);
			intent.putExtra("position", position);
			intent.putExtra("isedit", true);
			EditActivity.this.setResult(0, intent);
		}
		DateSQlite db = new DateSQlite(this);
		db.insertLog(mLogs);
		EditActivity.this.finish();
		overridePendingTransition(R.anim.slide_in_left,R.anim.slide_out_right);
	}

	@Override
	public void onClick(View v) {
		// TODO 自动生成的方法存根
		switch (v.getId()) {
		case R.id.ok:
			// 判断内容是否为空
			if (0 == medt_content.length() && 0 == medt_title.length()) {
				Toast.makeText(this, "日记内容还是空的哦！", Toast.LENGTH_SHORT).show();
			} else {
				// 判断当前内容的状态 编辑模式 or 查看模式
				if (mbtn_right.getTag().equals(BTN_ALTER)) {
					mbtn_right.setTag(BTN_SAVE);
					mbtn_right.setText("保存");
					medt_title.setEnabled(true);
					medt_content.setEnabled(true);
				} else {
					saveOn();
				}
			}

			break;
		case R.id.back:
			if (mbtn_right.getTag().equals(BTN_SAVE)) {
				DialogMessegs();
			} else {
				setResult(1);
				EditActivity.this.finish();
				overridePendingTransition(R.anim.slide_in_left,R.anim.slide_out_right);
			}
			break;
		case R.id.addpicture:
			mRL_imgGroup.setVisibility(View.VISIBLE);
			mintFlat = 1;
			break;
		case R.id.imageView0:
			popuwindow();
			mintImgFlat = 0;
			break;
		case R.id.imageView1:
			popuwindow();
			mintImgFlat = 1;
			break;
		case R.id.imageView2:
			popuwindow();
			mintImgFlat = 2;
			break;
		case R.id.imageView3:
			popuwindow();
			mintImgFlat = 3;
			break;
		case R.id.editcontent:
			medt_content.requestFocus();
		default:
			break;
		}
	}

	public void popuwindow() {
		AlertDialog.Builder deleteBuilder = new AlertDialog.Builder(this);
		deleteBuilder.setMessage("请选择一个来源");
		final int KEY = position;

		deleteBuilder.setPositiveButton("相机",
				new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						mGetPicture.takePhoto();
					}
				});
		deleteBuilder.setNegativeButton("相册",
				new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {
						mGetPicture.takeAlbum();
					}
				});
		deleteBuilder.create();
		deleteBuilder.show();
	}

	public void DialogMessegs() {
		AlertDialog.Builder deleteBuilder = new AlertDialog.Builder(this);
		deleteBuilder.setMessage("确定要放弃编辑？");
		final int KEY = position;

		deleteBuilder.setPositiveButton("确定",
				new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						setResult(1);
						EditActivity.this.finish();
						overridePendingTransition(R.anim.slide_in_left,R.anim.slide_out_right);
					}
				});
		deleteBuilder.setNegativeButton("取消",
				new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {

					}
				});
		deleteBuilder.create();
		deleteBuilder.show();
	}

	public void deleteImage(int mintImgFlatx) {
		AlertDialog.Builder deleteBuilder = new AlertDialog.Builder(this);
		deleteBuilder.setMessage("确定删除图片？");
		final int mintImgFlat = mintImgFlatx;

		deleteBuilder.setPositiveButton("确定",
				new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {

						ImageView imageView = (ImageView) findViewById(mintImgId[mintImgFlat]);
						imageView
								.setImageResource(R.drawable.img_add_x);
						mstrImgList[mintImgFlat] = 0 + "";
					}
				});
		deleteBuilder.setNegativeButton("取消",
				new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {

					}
				});
		deleteBuilder.create();
		deleteBuilder.show();
	}

	@Override
	public boolean onTouch(View v, MotionEvent event) {
		medt_content.requestFocus();
		if (1 == mintFlat) {
			int height = mRL_imgGroup.getTop();
			int y = (int) event.getY();
			if (event.getAction() == MotionEvent.ACTION_UP) {
				if (y < height) {
					mRL_imgGroup.setVisibility(View.GONE);
					mintFlat = 0;
				}
			}
		}

		return true;
	}

	@Override
	public boolean onLongClick(View v) {

		switch (v.getId()) {
		case R.id.imageView0:
			deleteImage(0);
			break;
		case R.id.imageView1:
			deleteImage(1);
			break;
		case R.id.imageView2:
			deleteImage(2);
			break;
		case R.id.imageView3:
			deleteImage(3);
			break;
		default:
			break;
		}
		return true;
	}

}

4.3.1 MyEditView

package com.wl.android.myeditView;


import com.example.timelinenote.R;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.EditText;

	public class MyEditView extends EditText {
		  
//		private static final String TAG = "com.lms.todo.views.MyEditView";
	  private Rect mRect;
	  private Paint mPaint;
	  private int mColor = R.color.grayBlown_press; 
	  private final int padding = 10;
	  
	  private int lineHeight;
	  private int viewHeight,viewWidth;

	  public MyEditView(Context context) {
	    this(context, null);
	  }

	  public MyEditView(Context context, AttributeSet attrs) {
	    this(context, attrs, 0);
	  }

	  public MyEditView(Context context, AttributeSet attrs, int defStyle) {
	    super(context, attrs, defStyle);
	    init(context, attrs);
	  }

	  private void init(Context context, AttributeSet attrs) {
	    mRect = new Rect();
	    mPaint = new Paint();
	    mPaint.setStyle(Paint.Style.STROKE);
	    mPaint.setColor(mColor);
	    mPaint.setStrokeWidth(2);
	    mPaint.setAntiAlias(true);
	    
	    setFocusable(true);
	    setFocusableInTouchMode(true);		
	  }

	  @Override
	  protected void onDraw(Canvas canvas) {
	    int count = getLineCount();
	    Rect r = mRect;		 
	    Paint paint = mPaint;
	    int lineHeight = 10;
	    int i = 0;		
	    while (i < count) {
	      lineHeight = getLineBounds(i, r);
	      canvas.drawLine(r.left, lineHeight + padding, r.right, lineHeight + padding,
	          paint);
	      i++;
	    }
	    int maxLines = 15;
	    int avgHeight = lineHeight / count;
	    int currentLineHeight = lineHeight;
	    i = 0;
	    while(i < maxLines){
	      currentLineHeight = currentLineHeight + avgHeight + padding;
	      canvas.drawLine(r.left, currentLineHeight, r.right, currentLineHeight, paint);
	      i++;
	    }
	    super.onDraw(canvas);	  
	  }
	}

4.3.2 MyImageView

package com.wl.android.myeditView;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Path;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.widget.ImageView;

public class MyImageView extends ImageView {
	public MyImageView(Context context) {
		super(context);
	}

	public MyImageView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public MyImageView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	protected void onDraw(Canvas canvas) {
		Path clipPath = new Path();
		int w = this.getWidth();
		int h = this.getHeight();
		clipPath.addRoundRect(new RectF(0, 0, w, h), 90.0f, 90.0f,
				Path.Direction.CW);
		canvas.clipPath(clipPath);
		super.onDraw(canvas);
	}
}

4.4.1 DateSQL

package com.wl.android.DateSQLite;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteConstraintException;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;

import com.wl.android.enpty.Logs;

public class DateSQlite {
			SQLiteDatabase db;
			Context context;
			public final static int KEY = 3;
			public final static int PASSWORD = 1;
			public final static int QUESTION = 2;
			public final static int DATE = 0;
			public final static int TITLE = 1;
			public final static int CONTEXT = 2;
			public final static int IMG0 = 3;
			public final static int IMG1 = 4;
			public final static int IMG2 = 5;
			public final static int IMG3 = 6;
			
	public DateSQlite(Context context) {
		this.context = context;	
		db = SQLiteDatabase.openOrCreateDatabase(
					context.getCacheDir().toString() + "/my.db3", null);
		try {
			db.execSQL("create table Logs("
					+"date varchar(10) primary key"
					+ ", title varchar(50)"
					+ ", context varchar(400)"
					+ ", img0 varchar(20)"
					+ ", img1 varchar(20)"
					+ ", img2 varchar(20)"
					+ ", img3 varchar(20))");
			
		} catch (Exception e) {
			// TODO: handle exception
		}
		try {
			db.execSQL("create table user_table("
					+ " id varchar(2) primary key,"
					+ " password varchar(8),"
					+ " question varchar(200),"
					+ " keys varchar(80))"
					);
			db.execSQL("update user_table"
					+ " set password = '0', "
					+ " question = '0',"
					+ " keys = '0'"
					+ " where id = 'Only'");
		} catch (Exception e) {
			// TODO: handle exception
		}
	}
	public void insertInformation(String password, String question,  String keys)
	{
		try {
			inserData(db, question, password, keys);
		} catch (Exception e) {
			db.execSQL("create table if not exists user_table("
					+ " id varchar(2) primary key,"
					+ " password varchar(8),"
					+ " question varchar(200),"
					+ " keys varchar(80))"
					);
			
		inserData(db, question, password, keys);
		}
		
	}
	public void deleteUser(){
		deleteImfromation();
	}
	private void deleteImfromation(){
		try {
			db.execSQL("update user_table"
					+ " set password = '0', "
					+ " question = '0',"
					+ " keys = '0'"
					+ " where id = 'Only'");
		} catch (Exception e) {
			// TODO: handle exception
		}
	}
	private void inserData(SQLiteDatabase db2, String question, String password, String keys) {
		
		try {
			db.execSQL("insert into user_table values(?, ?, ?, ?)"
					, new String[]{"Only", password, question,keys});
		} catch (Exception e) {
			// TODO: handle exception
			db.execSQL("update user_table"
					+ " set password = '"+ password+"', "
					+ " question = '"+question+"',"
					+ " keys = '"+keys+"'"
					+ " where id = 'Only'");
		}
		
	}
	public Cursor getInformation()
	{
		return selectInformation();
	}
	private Cursor selectInformation()
	{
		Cursor cursor;
		try {
			cursor = db.rawQuery("select * from user_table", null);
			cursor.moveToFirst();
		} catch (Exception e) {
			// TODO: handle exception
			return null;
		}
		
		return cursor;
	}
	public void deleteLog(Logs logs)
	{
		db.execSQL("delete from Logs where date = '"+ logs.getDate() +"'");
	}
	public void deleteLogs()
	{
		db.execSQL("delete from Logs where date = '*'");
	}
	public void updataLog(Logs logs)
	{
		db.execSQL("update Logs"
				+ " set title = '"+ logs.getTitleView()+"', "
				+ " context = '"+logs.getTextView()+"',"
				+ " img0 = '"+logs.getUrList()[0]+"',"
				+ " img1 = '"+logs.getUrList()[1]+"',"
				+ " img2 = '"+logs.getUrList()[2]+"',"
				+ " img3 = '"+logs.getUrList()[3]+"'"
				+ " where date = '"+logs.getDate()+"'");
	}
	public Boolean hasLogs(Logs logs)
	{
		try {
			Cursor cursor;
			cursor = db.rawQuery("select * from Logs where date = '"+ logs.getDate()+"'",null);
			cursor.close();
			return true;
		} catch (Exception e) {
			// TODO: handle exception
			return false;
		}
		
	}
	
	public ArrayList<Logs> getLogs()
	{
		Cursor cursor;
		ArrayList<Logs> list= new ArrayList<Logs>();
		cursor = db.rawQuery("select * from Logs", null);
		cursor.moveToFirst();
		Boolean haveNext = true;  
		while (haveNext) {
			Logs logs = new Logs();
			logs.setDate(cursor.getString(0));
			logs.setTitleView(cursor.getString(1));
			logs.setTextView(cursor.getString(2));
			String string[] = {cursor.getString(3)
					, cursor.getString(4)
					, cursor.getString(5)
					, cursor.getString(6)};
			logs.setUrList(string);
			list.add(logs);
			haveNext = cursor.moveToNext();
		}
		cursor.close();
		return list;
		
	}
	public void insertLogs(ArrayList<Logs> list)
	{
		for (int i = 0; i < list.size(); i++) {
			insertLog(list.get(i));
		}
	}
	public void insertLog(Logs logs)
	{
		String date = logs.getDate();
		String title = logs.getTitleView();
		String context = logs.getTextView();
		String img0 = logs.getUrList()[0];
		String img1 = logs.getUrList()[1];
		String img2 = logs.getUrList()[2];
		String img3 = logs.getUrList()[3];
		try {
			db.execSQL("insert into Logs values(?, ?, ?, ?, ?, ?, ?)"
					, new String []{date
					, title
					, context
					, img0, img1, img2, img3});
			
		} catch (SQLiteConstraintException e) {
			e.printStackTrace();
			try {
				db.execSQL("create table Logs("
						+"date varchar(10) primary key"
						+ ", title varchar(50)"
						+ ", context varchar(400)"
						+ ", img0 varchar(20)"
						+ ", img1 varchar(20)"
						+ ", img2 varchar(20)"
						+ ", img3 varchar(20))");
				db.execSQL("insert into Logs values(?,?,?,?,?,?,?)"
						, new String []
						{date
						, title
						, context
						, img0, img1, img2, img3});
			} catch (Exception e2) {
				System.out.println("日期已存在，内容将被修改");
				updataLog(logs);
			}
			}
		}
	
}

4.5.1 GetPicture

package com.wl.android.enpty;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Locale;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.Path;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.format.DateFormat;
import android.util.DisplayMetrics;
import android.widget.Toast;

public class GetPictureFormCAMER {

	private Activity activity;
	private static final int CAMEA_TAKE = 1;
	private static final int CAMEA_SELECT = 2;
	public String name;
	private static final String PATH = Environment
			.getExternalStorageDirectory() + "/a_Timeline/image";
	private boolean isBig = false;

	// Environment.getExternalStorageDirectory() +
	public GetPictureFormCAMER(Activity activity) {
		this.activity = activity;
	}
	public GetPictureFormCAMER()
	{}
	public String getname_R() {

		new DateFormat();
		String name_R = DateFormat.format("yyyyMMMdd_hhmmss",
				Calendar.getInstance(Locale.CHINA))
				+ ".png";
		return name_R;

	}

	public String getname() {
		return name;
	}

	public String getPath() {
		return PATH;
	}

	public void takeAlbum() {
		Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
		intent.setType("image/*");
		name = getname_R();
		activity.startActivityForResult(intent, CAMEA_SELECT);
	}

	public void takePhoto() {
		Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
		new DateFormat();
		name = getname_R();

		Uri imageUri = Uri.fromFile(new File(PATH, name));

		intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

		activity.startActivityForResult(intent, CAMEA_TAKE);
	}

	public Bitmap getPictureFromResult(int resultCode, int requestCode,
			Intent data) {
		if (resultCode == activity.RESULT_OK) {
			switch (requestCode) {
			case CAMEA_TAKE:
				Bitmap bitmap = BitmapFactory.decodeFile(PATH + "/" + name);
				saveBitmap(name, bitmap);
				Toast.makeText(activity, name, Toast.LENGTH_LONG).show();
				System.out.println(bitmap.getHeight() + "====="
						+ bitmap.getWidth());

				DisplayMetrics dm = new DisplayMetrics();
				activity.getWindowManager().getDefaultDisplay().getMetrics(dm);

				float scale = bitmap.getWidth() / (float) dm.widthPixels;

				Bitmap newBitmap = null;
				if (scale > 1) {
					newBitmap = zoomBitmap(bitmap, bitmap.getWidth() / scale,
							bitmap.getHeight() / scale);
					bitmap.recycle();
					isBig = true;
				}
				if (isBig) {
					return newBitmap;
				} else {
					return bitmap;
				}
			case CAMEA_SELECT:
				ContentResolver resolver = activity.getContentResolver();

				Uri imgUri = data.getData();

				try {
					Bitmap photoBitmap = MediaStore.Images.Media.getBitmap(
							resolver, imgUri);

					saveBitmap(name, photoBitmap);

					DisplayMetrics dm_2 = new DisplayMetrics();
					activity.getWindowManager().getDefaultDisplay()
							.getMetrics(dm_2);

					float scale_2 = photoBitmap.getWidth()
							/ (float) dm_2.widthPixels;

					Bitmap newBitmap_2 = null;
					if (scale_2 > 1) {
						newBitmap_2 = zoomBitmap(photoBitmap,
								photoBitmap.getWidth() / scale_2,
								photoBitmap.getHeight() / scale_2);
						photoBitmap.recycle();
						isBig = true;
					}
					if (isBig) {
						return newBitmap_2;
					} else {
						return photoBitmap;
					}
				} catch (Exception e) {
					// TODO: handle exception
				}
				break;
			default:
				break;
			}
		}
		return null;
	}

	public Bitmap zoomBitmap(Bitmap bitmap, float width, float height) {
		int w = bitmap.getWidth();
		int h = bitmap.getHeight();
		Matrix matrix = new Matrix();
		float scaleWidth = ((float) width / w);
		float scaleheight = ((float) height / h);
		matrix.postScale(scaleWidth, scaleheight);
		Bitmap newbitBitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix,
				true);
		return newbitBitmap;
	}

	public void saveBitmap(String name, Bitmap bm) {
		File ff = new File(PATH);
		if (ff.exists() == false) {
			ff.mkdirs();
		}
		File f = new File(PATH + "/" + name);
		System.out.println("开始保存中.......");

		try {
			FileOutputStream out = new FileOutputStream(f);
			bm.compress(Bitmap.CompressFormat.PNG, 90, out);
			out.flush();
			out.close();
			System.out.print(" 保存成功 ╮(╯_╰)╭");
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			System.out.print("保存失败");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			System.out.print("保存失败");
		}

	}
	public Bitmap takePictureFormName(String names)
	{
		Bitmap bitmap = BitmapFactory.decodeFile(PATH + "/" + names);
		if (null != bitmap) {
			return bitmap;
		}
		return null;
	}
}

4.5.2 Logs

package com.wl.android.enpty;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import android.net.Uri;


public class Logs implements Serializable {
	private String titleView;
	private String textView;
	private String tipsView;
	private String date;
	private String[] urList = {"0","0","0","0"};
	public String[] getUrList() {
		return urList;
	}
	public void setUrList(String[] urList) {
		this.urList = urList;
	}
	public String getDate() {
		return date;
	}
	public void setDate(String date) {
		this.date = date;
	}
	
	public String getTitleView() {
		return titleView;
	}
	public void setTitleView(String titleView) {
		this.titleView = titleView;
	}
	public String getTextView() {
		return textView;
	}
	public void setTextView(String textView) {
		this.textView = textView;
	}
	public String getTipsView() {
		return tipsView;
	}
	public void setTipsView(String tipsView) {
		this.tipsView = tipsView;
	}
	
	
}

4.6.1 MyAdapter

package com.wl.android.myadapter;

import java.util.List;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Typeface;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.timelinenote.R;
import com.wl.android.enpty.GetPictureFormCAMER;
import com.wl.android.enpty.Logs;




public class Myadapter extends BaseAdapter{

	private List<Logs> list;
	private Context context;
	ViewHolder viewHoder;
	private GetPictureFormCAMER getpicture = new GetPictureFormCAMER();
	Typeface mTypeface_HM ;
	public Myadapter(List<Logs> list, Context context) {
		this.list = list;
		this.context = context;
		mTypeface_HM = Typeface.createFromAsset(context.getAssets(), "fonts/Hym.ttf");
	}
	public int getCount() {
		// TODO 自动生成的方法存根
		return list.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO 自动生成的方法存根
		return null;
	}

	@Override
	public long getItemId(int position) {
		// TODO 自动生成的方法存根
		return 0;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder viewHolder = new ViewHolder();
		if (convertView == null) {
			convertView = View.inflate(context,
					R.layout.timeline_index, null);
			viewHolder.titleView = (TextView) convertView.findViewById(R.id.title);
			viewHolder.textView = (TextView) convertView.findViewById(R.id.text);
			viewHolder.dateView = (TextView) convertView.findViewById(R.id.date);
			viewHolder.textView.setTypeface(mTypeface_HM);
			viewHolder.dateView.setTypeface(mTypeface_HM);
			viewHolder.titleView.setTypeface(mTypeface_HM);
			viewHolder.img[0] = (ImageView) convertView.findViewById(R.id.imagetlv0);
			viewHolder.img[1] = (ImageView) convertView.findViewById(R.id.imagetlv1);
			viewHolder.img[2] = (ImageView) convertView.findViewById(R.id.imagetlv2);
			viewHolder.img[3] = (ImageView) convertView.findViewById(R.id.imagetlv3);
			convertView.setTag(viewHolder);
		} else {
			viewHolder = (ViewHolder)convertView.getTag();
		}
		viewHolder.titleView.setText(list.get(position).getTitleView());
		viewHolder.textView.setText(list.get(position).getTextView());
		viewHolder.dateView.setText(list.get(position).getDate());
		String names[] = list.get(position).getUrList();
		for (int i = 0; i < 4; i++) {
			if (!names[i].equals("0")) {
				Bitmap bitmap = getpicture.takePictureFormName(names[i]);
				if (null != bitmap) {
					viewHolder.img[i].setImageBitmap(bitmap);
					viewHolder.img[i].setVisibility(View.VISIBLE);
				}
			}else {
				viewHolder.img[i].setVisibility(View.GONE);
			}
			
			
		}
		return convertView;	
}
}
class ViewHolder{
	public TextView titleView;
	public TextView textView;
	public TextView dateView;
	public ImageView[] img = new ImageView[4];
	
	
}

Android 学习实例 Note

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原文地址：http://blog.csdn.net/rindia/article/details/51732767