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

卫士黑名单功能（ListView结合SQLite增删改）"/>

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

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.html

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Dao类BlackNumberAdo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：.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Dao类BlackNumberAdo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;@Overrideprotected 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 {@Overridepublic int getCount() {// TODO Auto-generated method stubreturn infos.size();}@Overridepublic 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() {@Overridepublic 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() {@Overridepublic 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;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 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() {@Overridepublic 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() {@Overridepublic void onClick(View v) {alertDialog.dismiss();}});}
}