标签：save   activity   back   break   insert   报错   验证   数据   boolean   

第一阶段冲刺

觅踪1

 昨天主要是对正则表达式的学习，今天家里的杂物比较多，忙活了一下午，晚上适当的做了一些按钮，为刚开始的登录注册页面做准备，睡了睡了

觅踪2

昨天的页面设计受到了停滞，今天换了一种形式，之前是直接用按键绘制，现在改为代码操纵，自己的进程缓慢了许多，明天将继续加油

界面代码如下：

复制代码

<?xml version="1.0" encoding="utf-8"?>

<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"

    tools:context=".MainActivity"

    android:orientation="vertical"

    android:layout_gravity="center"

    android:background="@drawable/tim">

    <TextView

        android:layout_width="match_parent"

        android:layout_height="76dp"

        android:layout_marginTop="25dp"

        android:gravity="center"

        android:text="@string/mizong"

        android:textColor="#000000"

        android:textSize="45sp"

        android:textStyle="bold">

    </TextView>

    <RelativeLayout

        android:id="@+id/text_1"

        android:layout_height="70dp"

        android:layout_width="match_parent"

        android:layout_marginTop="50dp"

        android:layout_marginLeft="50dp"

        android:layout_marginRight="50dp">

        <TextView

            android:layout_width="wrap_content"

            android:layout_height="60dp"

            android:text="@string/zhanghu"

            android:textSize="35sp"

            >

        </TextView>>

        <EditText

            android:layout_height="50dp"

            android:layout_width="match_parent"

            android:autofillHints=""

            android:layout_toRightOf="@id/text_1"

            tools:ignore="NotSibling">

        </EditText>

    </RelativeLayout>>

    <RelativeLayout

        android:id="@+id/text_2"

        android:layout_height="70dp"

        android:layout_width="match_parent"

        android:layout_marginTop="50dp"

        android:layout_marginLeft="50dp"

        android:layout_marginRight="50dp">

        <TextView

            android:layout_width="wrap_content"

            android:layout_height="60dp"

            android:text="@string/password"

            android:textSize="35sp"

            >

        </TextView>

        <EditText

            android:layout_height="50dp"

            android:layout_width="match_parent"

            android:autofillHints=""

            android:inputType="textPassword"

            android:layout_toRightOf="@id/text_2"

            tools:ignore="NotSibling">

        </EditText>

    </RelativeLayout>>

    <LinearLayout

        android:layout_height="wrap_content"

        android:layout_width="wrap_content"

        android:layout_gravity="center"

        android:layout_marginTop="20dp">

        <Switch

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginTop="20dp"

            android:text="记住密码"

            android:textSize="25sp"

            android:layout_marginLeft="40dp">

        </Switch>

        <Switch

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginTop="20dp"

            android:text="忘记密码"

            android:textSize="25sp"

            android:layout_marginLeft="70dp"

            >

        </Switch>

    </LinearLayout>

        <LinearLayout

            android:layout_height="wrap_content"

            android:layout_width="wrap_content"

            android:layout_gravity="center"

            android:layout_marginTop="10dp">

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginTop="100dp"

            android:text="@string/denglu">

        </Button>

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginTop="100dp"

            android:text="@string/zhuce"

            >

        </Button>

    </LinearLayout>

</LinearLayout>

觅踪3

今天整体结束了登录界面的构造搭建，并且开始了下一阶段，也就是个人信息以及好友的功能开发整体来说，由于对于Android Studio的不熟练，开发进程略微嫌慢，后期慢慢的会加快进程

以下是本组登录界面的第一阶段目标的补充代码：

item1.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="vertical">

    <androidx.constraintlayout.widget.ConstraintLayout

        android:layout_width="match_parent"

        android:layout_height="match_parent">

        <ImageView

            android:id="@+id/imageView2"

            android:layout_width="130dp"

            android:layout_height="137dp"

            android:contentDescription="TODO"

            app:layout_constraintBottom_toBottomOf="parent"

            app:layout_constraintStart_toStartOf="parent"

            app:layout_constraintTop_toTopOf="parent"

            app:srcCompat="@drawable/ima" />

        <TextView

            android:id="@+id/textView5"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginBottom="84dp"

            android:text="@string/name"

            android:textColor="@android:color/black"

            android:textSize="30sp"

            app:layout_constraintBottom_toBottomOf="parent"

            app:layout_constraintEnd_toEndOf="parent"

            app:layout_constraintHorizontal_bias="0.126"

            app:layout_constraintStart_toEndOf="@+id/imageView2" />

        <TextView

            android:id="@+id/textView4"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginBottom="16dp"

            android:text="@string/gexing"

            android:textSize="24sp"

            app:layout_constraintBottom_toBottomOf="parent"

            app:layout_constraintEnd_toEndOf="parent"

            app:layout_constraintHorizontal_bias="0.247"

            app:layout_constraintStart_toEndOf="@+id/imageView2" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</LinearLayout>

activity-main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@drawable/tim"

    tools:context=".MainActivity"

    >

    <RelativeLayout

        android:id="@+id/rl_loginactivity_top"

        android:layout_width="match_parent"

        android:layout_height="70dp"

        android:background="@color/color_minefragment_top" >

        <ImageView

            android:id="@+id/iv_loginactivity_back"

            android:layout_width="30dp"

            android:layout_height="30dp"

            android:layout_alignParentTop="true"

            android:layout_marginLeft="10dp"

            android:layout_marginTop="20dp"

            android:background="@drawable/ic_left_back"

            android:clickable="true"

            android:onClick="onClick" />

        <TextView

            android:id="@+id/tv_loginactivity_login"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="登录"

            android:textColor="#fff"

            android:textSize="20dp"

            android:layout_toRightOf="@+id/iv_loginactivity_back"

            android:layout_centerVertical="true"

            android:layout_marginLeft="20dp"

            />

        <TextView

            android:id="@+id/tv_loginactivity_register"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="注册"

            android:textColor="#fff"

            android:textSize="20dp"

            android:layout_centerVertical="true"

            android:layout_alignParentRight="true"

            android:layout_marginRight="30dp"

            android:clickable="true"

            android:onClick="onClick"

            />

    </RelativeLayout>

    <LinearLayout

        android:id="@+id/ll_loginactivity_two"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        android:layout_below="@+id/rl_loginactivity_top"

        android:layout_marginTop="10dp"

        android:layout_marginLeft="5dp"

        android:layout_marginRight="5dp"

        >

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:orientation="horizontal">

            <TextView

                android:id="@+id/tv_loginactivity_username"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:text="用户名："/>

            <EditText

                android:id="@+id/et_loginactivity_username"

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:hint="手机号/邮箱/用户名"/>

        </LinearLayout>

        <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:orientation="horizontal">

            <TextView

                android:id="@+id/tv_loginactivity_password"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:text="密    码："/>

            <EditText

                android:id="@+id/et_loginactivity_password"

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:hint="登录密码"

                android:inputType="textPassword"/>

        </LinearLayout>

    </LinearLayout>

    <Button

        android:id="@+id/bt_loginactivity_login"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_below="@+id/ll_loginactivity_two"

        android:layout_marginTop="10dp"

        android:layout_marginLeft="5dp"

        android:layout_marginRight="5dp"

        android:background="@drawable/selector_loginactivity_button"

        android:text="登录"

        android:textColor="#fff"

        android:gravity="center"

        android:onClick="onClick"

        />

</RelativeLayout>

activity_z_c.xml

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/container"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingBottom="@dimen/activity_vertical_margin"

    tools:context=".ui.login.ZCActivity">

    <EditText

        android:id="@+id/username"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="24dp"

        android:layout_marginTop="96dp"

        android:layout_marginEnd="24dp"

        android:hint="@string/prompt_email"

        android:inputType="textEmailAddress"

        android:selectAllOnFocus="true"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

    <EditText

        android:id="@+id/password"

        android:layout_width="0dp"

        android:layout_height="wrap_content"

        android:layout_marginStart="24dp"

        android:layout_marginTop="8dp"

        android:layout_marginEnd="24dp"

        android:hint="@string/prompt_password"

        android:imeActionLabel="@string/action_sign_in_short"

        android:imeOptions="actionDone"

        android:inputType="textPassword"

        android:selectAllOnFocus="true"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/username" />

    <Button

        android:id="@+id/login"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="start"

        android:layout_marginStart="48dp"

        android:layout_marginTop="16dp"

        android:layout_marginEnd="48dp"

        android:layout_marginBottom="64dp"

        android:enabled="false"

        android:text="@string/action_sign_in"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/password"

        app:layout_constraintVertical_bias="0.2" />

    <ProgressBar

        android:id="@+id/loading"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center"

        android:layout_marginStart="32dp"

        android:layout_marginTop="64dp"

        android:layout_marginEnd="32dp"

        android:layout_marginBottom="64dp"

        android:visibility="gone"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toEndOf="@+id/password"

        app:layout_constraintStart_toStartOf="@+id/password"

        app:layout_constraintTop_toTopOf="parent"

        app:layout_constraintVertical_bias="0.3" />

</androidx.constraintlayout.widget.ConstraintLayout>

觅踪4

今天继续完善登录、注册功能，看似简单，实则不易

Mainactivity

package com.example.demo2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.Button;

import android.content.Intent;

import android.os.Bundle;

import android.text.TextUtils;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.RelativeLayout;

import android.widget.TextView;

import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    private DBOpenHelper mDBOpenHelper;

    private TextView mTvLoginactivityRegister;

    private RelativeLayout mRlLoginactivityTop;

    private EditText mEtLoginactivityUsername;

    private EditText mEtLoginactivityPassword;

    private LinearLayout mLlLoginactivityTwo;

    private Button mBtLoginactivityLogin;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        initView();

        mDBOpenHelper = new DBOpenHelper(this);

    }

    private void initView() {

        // 初始化控件

        mBtLoginactivityLogin = findViewById(R.id.bt_loginactivity_login);

        mTvLoginactivityRegister = findViewById(R.id.tv_loginactivity_register);

        mRlLoginactivityTop = findViewById(R.id.rl_loginactivity_top);

        mEtLoginactivityUsername = findViewById(R.id.et_loginactivity_username);

        mEtLoginactivityPassword = findViewById(R.id.et_loginactivity_password);

        mLlLoginactivityTwo = findViewById(R.id.ll_loginactivity_two);

        // 设置点击事件监听器

        mBtLoginactivityLogin.setOnClickListener(this);

        mTvLoginactivityRegister.setOnClickListener(this);

    }

    public void onClick(View view) {

        switch (view.getId()) {

            // 跳转到注册界面

            case R.id.tv_loginactivity_register:

                startActivity(new Intent(this, item1Activity.class));

                finish();

                break;

            case R.id.bt_loginactivity_login:

                String name = mEtLoginactivityUsername.getText().toString().trim();

                String password = mEtLoginactivityPassword.getText().toString().trim();

                if (!TextUtils.isEmpty(name) && !TextUtils.isEmpty(password)) {

                    ArrayList<User> data = mDBOpenHelper.getAllData();

                    boolean match = false;

                    for (int i = 0; i < data.size(); i++) {

                        User user = data.get(i);

                        if (name.equals(user.getName()) && password.equals(user.getPassword())) {

                            match = true;

                            break;

                        } else {

                            match = false;

                        }

                    }

                    if (match) {

                        Toast.makeText(this, "登录成功", Toast.LENGTH_SHORT).show();

                        Intent intent = new Intent(this, MainActivity.class);

                        startActivity(intent);

                        finish();//销毁此Activity

                    } else {

                        Toast.makeText(this, "用户名或密码不正确，请重新输入", Toast.LENGTH_SHORT).show();

                    }

                } else {

                    Toast.makeText(this, "请输入你的用户名或密码", Toast.LENGTH_SHORT).show();

                }

                break;

        }

    }

}

item1activity

package com.example.demo2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ListView;

import android.widget.TextView;

public class item1Activity extends AppCompatActivity {

        @Override

        protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            ListView lv_list = (ListView) findViewById(R.id.lv_list);

            lv_list.setAdapter(new MyAdapter());

        }

        private class MyAdapter extends BaseAdapter {

            @Override

            public int getCount() {

                return 5;//返回值决定ListView展示多少条数据

            }

            @Override

            public Object getItem(int position) {

                return null;

            }

            @Override

            public long getItemId(int position) {

                return 0;

            }

            @Override

            public View getView(int position, View convertView, ViewGroup parent) {

                View view = null;

                if (convertView == null) {

                    view = View.inflate(item1Activity.this, R.layout.item1, null);

                } else {

                    view = convertView;

                }

                return view;

            }

        }

    }

觅踪5

冲刺阶段过半，开了一次小会，明确了第一阶段的冲刺目标，互相之间加油打气，队内相互鼓励，活跃了一下氛围

个人的登录功能的构建也日趋完善，期间也会有一些小问题，相互讨论，并在一些教程以及CSDN论坛的帖子中寻找解决问题的方法

Main2Activity

package com.example.demo2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.content.Intent;

import android.text.TextUtils;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.RelativeLayout;

import android.widget.Toast;

public class Main2Activity extends AppCompatActivity  implements View.OnClickListener {

    private String realCode;

    private DBOpenHelper mDBOpenHelper;

    private Button mBtRegisteractivityRegister;

    private RelativeLayout mRlRegisteractivityTop;

    private ImageView mIvRegisteractivityBack;

    private LinearLayout mLlRegisteractivityBody;

    private EditText mEtRegisteractivityUsername;

    private EditText mEtRegisteractivityPassword1;

    private EditText mEtRegisteractivityPassword2;

    private EditText mEtRegisteractivityPhonecodes;

    private ImageView mIvRegisteractivityShowcode;

    private RelativeLayout mRlRegisteractivityBottom;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main2);

        initView();

        mDBOpenHelper = new DBOpenHelper(this);

    }

    private void initView(){

        mBtRegisteractivityRegister = findViewById(R.id.bt_registeractivity_register);

        mRlRegisteractivityTop = findViewById(R.id.rl_registeractivity_top);

        mIvRegisteractivityBack = findViewById(R.id.iv_registeractivity_back);

        mLlRegisteractivityBody = findViewById(R.id.ll_registeractivity_body);

        mEtRegisteractivityUsername = findViewById(R.id.et_registeractivity_username);

        mEtRegisteractivityPassword1 = findViewById(R.id.et_registeractivity_password1);

        mEtRegisteractivityPassword2 = findViewById(R.id.et_registeractivity_password2);

        mIvRegisteractivityBack.setOnClickListener(this);

        mBtRegisteractivityRegister.setOnClickListener(this);

    }

    public void onClick(View view) {

        switch (view.getId()) {

            case R.id.iv_registeractivity_back: //返回登录页面

                Intent intent1 = new Intent(this, Main2Activity.class);

                startActivity(intent1);

                finish();

                break;

            case R.id.bt_registeractivity_register:    //注册按钮

                //获取用户输入的用户名、密码、验证码

                String username = mEtRegisteractivityUsername.getText().toString().trim();

                String password = mEtRegisteractivityPassword1.getText().toString().trim();

                //注册验证

                if (!TextUtils.isEmpty(username) && !TextUtils.isEmpty(password)  ) {

                    //将用户名和密码加入到数据库中

                    mDBOpenHelper.add(username, password);

                    Intent intent2 = new Intent(this, MainActivity.class);

                    startActivity(intent2);

                    finish();

                    Toast.makeText(this,  "验证通过，注册成功", Toast.LENGTH_SHORT).show();

                }else {

                    Toast.makeText(this, "未完善信息，注册失败", Toast.LENGTH_SHORT).show();

                }

                break;

        }

    }

}

User

package com.example.demo2;

public class User {

    private String name;            //用户名

    private String password;        //密码

    public User(String name, String password) {

        this.name = name;

        this.password = password;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    @Override

    public String toString() {

        return "User{" +

                "name=‘" + name + ‘\‘‘ +

                ", password=‘" + password + ‘\‘‘ +

                ‘}‘;

    }

}

DBOoenHelper

package com.example.demo2;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

import java.util.ArrayList;

public class DBOpenHelper extends SQLiteOpenHelper {

    private SQLiteDatabase db;

    public DBOpenHelper(Context context) {

        super(context, "db_test", null, 1);

        db = getReadableDatabase();

    }

    @Override

    public void onCreate(SQLiteDatabase db){

        db.execSQL("CREATE TABLE IF NOT EXISTS user(" +

                "_id INTEGER PRIMARY KEY AUTOINCREMENT," +

                "name TEXT," +

                "password TEXT)");

    }

    @Override

    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion){

        db.execSQL("DROP TABLE IF EXISTS user");

        onCreate(db);

    }

    public void add(String name,String password){

        db.execSQL("INSERT INTO user (name,password) VALUES(?,?)",new Object[]{name,password});

    }

    public void delete(String name,String password){

        db.execSQL("DELETE FROM user WHERE name = AND password ="+name+password);

    }

    public void updata(String password){

        db.execSQL("UPDATE user SET password = ?",new Object[]{password});

    }

    public ArrayList<User> getAllData(){

        ArrayList<User> list = new ArrayList<User>();

        Cursor cursor = db.query("user",null,null,null,null,null,"name DESC");

        while(cursor.moveToNext()){

            String name = cursor.getString(cursor.getColumnIndex("name"));

            String password = cursor.getString(cursor.getColumnIndex("password"));

            list.add(new User(name,password));

        }

        return list;

    }

}

觅踪6

登录功能的完成，既是加油打气，也是开启新任务的连接。接下来，铆足气力攻克难关，研究地图可视化、定位功能以及路线的可视化

由于大家都没有接触过，也有向也一些学长请教，但还是无果

于是转向CSDN论坛，看了些前辈发布的关于调用Baidu、高德地图API的经验

觅踪7

经过昨天的学习、交流、讨论，对于地图的调用有了初步的了解认知，但是总体来说还是有些欠缺

开发的初期就遇到了一些问题，比如Baidu密钥的获取，SHA1指纹的获取

这里附上其中的一个较为详细的CSDN论坛的路径：

https://blog.csdn.net/Ivan_Keung/article/details/53819406

感觉还不错步骤还是挺详细的

觅踪8

距离冲刺结束还有两天，今天我们在CSDN论坛的帖子的步骤教学下，进行了临摹，先尝试着自己开发，但是经过了一天的奋斗之后，我们好像遇到了瓶颈，于是又召开了一次会议重新制定了目标，决定脚踏实地，明天先尝试着将帖子上的代码运行出来，再进行修改，学习把他转化成为我们自己的代码

觅踪9

按着昨天预想的步骤来走，其实不然，我们似乎遇到了大问题

在一步一步跟着帖子的指示下来，就在我们准备run的时候

他报错了，没错报错了，这是我们没有想到的

觅踪10

终于，在最后一天，初步实现了地图的可视化，虽然与我们预想的结果有些偏差，但总算是有了些进展

第一阶段冲刺

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原文地址：https://www.cnblogs.com/wyppaa/p/13093792.html