码迷,mamicode.com
首页 > 移动开发 > 详细

[android] 手机卫士黑名单功能(ListView结合SQLite增删改)

时间:2016-05-14 23:01:46      阅读:294      评论:0      收藏:0      [点我收藏+]

标签:

修改界面,在顶部横条上增加一个添加按钮,点击打开一个自定义对话框,输入电话号码和拦截模式保存到数据库

自定义对话框看这篇http://www.cnblogs.com/taoshihan/p/5370378.html

技术分享 技术分享

添加记录

调用Builder对象的show()方法,获取AlertDialog对象

调用View.inflate()方法,将布局文件转成View对象

调用View对象的findViewById()方法,获取确认和取消的Button对象

调用Button对象的setOnClickListener()方法,设置点击事件,匿名内部类实现OnClickListener接口,重写onClick()方法

调用AlertDialog对象的dismiss()方法,可以关闭对话框

调用View对象的findViewById()方法,获取到各个控件的值,进行判断处理

调用之前定义好的DaoBlackNumberAdo对象的add()方法,数据库增加一条记录,参数:String电话号码,String拦截模式

此时ListView并不会显出出来刚添加的记录,需要退出这个Activity重写进入,我们通知适配器数据更新

调用集合List对象的add()方法,添加一条数据,参数:0(第一个),数据

调用ListAdapter对象的notifyDataSetChanged()方法,通知数据更新

 

删除记录

条目布局文件中,在右侧放置一个垃圾桶的小图标,上下居中,父控件右边

 

安卓系统的点击事件和js的点击事件很相似,

参考这篇:http://www.cnblogs.com/taoshihan/p/5438729.html

 

获取到删除按钮Button对象

调用Button对象,设置点击事件

获取AlertDialog.Builder对象,展示是否确认删除的对话框

调用AlertDialog.Builder对象,设置确认按钮和取消按钮,注意设置点击事件OnClickListener时,它所在的包是DialogInterface.OnClickListener

调用之前定义好的DaoBlackNumberAdo对象的delete()方法,参数:String电话号码

调用集合List对象的remove()方法,删除一条数据,参数:int索引

调用ListAdapter对象的notifyDataSetChanged()方法,通知数据更新

CallSmsSafeActivity.java

package com.qingguow.mobilesafe;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.qingguow.mobilesafe.db.ado.BlackNumberAdo;

/**
 * 通讯卫士
 * 
 * @author taoshihan
 * 
 */
public class CallSmsSafeActivity extends Activity {
    private ListView listview;
    private List<Map<String, String>> infos;
    private BlackNumberAdo dao;
    private MyAdapter myAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_call_sms_safe);
        listview = (ListView) findViewById(R.id.lv_blacknumber);
        myAdapter=new MyAdapter();

        dao = new BlackNumberAdo(this);
        infos = dao.findAll();
        listview.setAdapter(myAdapter);
        // //添加100条测试数据
        // Random random=new Random();
        // for(int i=1;i<=100;i++){
        // ado.add("18805419000"+i, String.valueOf(random.nextInt(3)+1));
        // }
        
    }
    class ViewHolder{
        public TextView phoneView;
        public TextView modeView;
        public ImageView iv_delete;
    }
    private class MyAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return infos.size();
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            View view;
            ViewHolder holder=new ViewHolder();
            if(convertView==null){
                view = View.inflate(CallSmsSafeActivity.this,
                        R.layout.list_call_sms_safe_item, null);
                holder.phoneView=(TextView) view
                        .findViewById(R.id.tv_main_phone);
                holder.modeView=(TextView) view
                        .findViewById(R.id.tv_block_mode);
                holder.iv_delete=(ImageView) view.findViewById(R.id.iv_delete);
                view.setTag(holder);
                System.out.println("创建新的View对象"+position);
            }else{
                view=convertView;
                holder=(ViewHolder) view.getTag();
                System.out.println("使用历史View对象"+position);
            }
            
            
            holder.phoneView.setText(infos.get(position).get("phone"));
            switch (infos.get(position).get("mode")) {
            case "1":
                holder.modeView.setText("电话拦截");
                break;
            case "2":
                holder.modeView.setText("短信拦截");
                break;
            case "3":
                holder.modeView.setText("全部拦截");
                break;
            default:
                break;
            }
            //删除条目
            holder.iv_delete.setOnClickListener(new OnClickListener() {
                
                @Override
                public void onClick(View v) {
                    AlertDialog.Builder builder=new AlertDialog.Builder(CallSmsSafeActivity.this);
                    builder.setTitle("警告");
                    builder.setMessage("是否确认删除?");
                    builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
                        
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            infos.remove(position);
                            myAdapter.notifyDataSetChanged();
                            dao.delete(infos.get(position).get("phone"));
                        }
                    });
                    builder.setNegativeButton("取消", null);
                    builder.show();
                }
            });
            return view;
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }

    }
    private EditText blackNumber;
    private CheckBox blockCall;
    private CheckBox blockSms;
    /**
     * 添加黑名单
     * @param v
     */
    public void addCallSmsSafe(View v) {
        AlertDialog.Builder builder=new AlertDialog.Builder(this);
        View view=View.inflate(this, R.layout.dialog_add_safe_sms, null);
        builder.setView(view);
        final AlertDialog alertDialog=builder.show();
        Button submit=(Button) view.findViewById(R.id.bt_submit);
        Button cancel=(Button) view.findViewById(R.id.bt_cancel);
        blackNumber=(EditText) view.findViewById(R.id.et_black_number);
        blockCall=(CheckBox) view.findViewById(R.id.cb_block_call);
        blockSms=(CheckBox) view.findViewById(R.id.cb_block_sms);
        
        submit.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String phone=blackNumber.getText().toString().trim();
                String mode = "3";
                if(TextUtils.isEmpty(phone)){
                    Toast.makeText(CallSmsSafeActivity.this, "请输入手机号码", 0).show();
                }
                if(blockCall.isChecked()&&blockSms.isChecked()){
                    //全部拦截
                    mode="3";
                }else if(blockCall.isChecked()){
                    //电话拦截
                    mode="1";
                }else if(blockSms.isChecked()){
                    //短信拦截
                    mode="2";
                }else{
                    Toast.makeText(CallSmsSafeActivity.this, "请勾选拦截模式", 0).show();
                }
                dao.add(phone, mode);
                Map<String, String> info=new HashMap<String, String>();
                info.put("phone", phone);
                info.put("mode", mode);
                infos.add(0,info);
                myAdapter.notifyDataSetChanged();
                alertDialog.dismiss();
            }
        });
        cancel.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                alertDialog.dismiss();
            }
        });
    }
}

 

[android] 手机卫士黑名单功能(ListView结合SQLite增删改)

标签:

原文地址:http://www.cnblogs.com/taoshihan/p/5493612.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!