Android:BroadcastReceiver的练习使用

 1 package com.example.broadcastdemo1;
 2 
 3 import android.os.Bundle;
 4 import android.app.Activity;
 5 import android.content.Intent;
 6 import android.content.IntentFilter;
 7 import android.view.Menu;
 8 import android.view.View;
 9 
10 public class MainActivity extends Activity {
11     private MyBroadcastReceiver2 mbr2;
12     private MyBroadcastReceiver3 mbr3;
13     @Override
14     protected void onCreate(Bundle savedInstanceState) {
15         super.onCreate(savedInstanceState);
16         setContentView(R.layout.activity_main);
17         IntentFilter intentFilter = new IntentFilter("BC_One");
18         mbr2 = new MyBroadcastReceiver2();
19         registerReceiver(mbr2, intentFilter);    
20     }
21     
22     public void doClick(View v) {
23         switch (v.getId()) {
24         case R.id.normal_broadcast:
25             Intent intent = new Intent();
26             intent.putExtra("msg", "这是一条普通广播");
27             intent.setAction("BC_One");
28             sendBroadcast(intent);
29             break;
30         case R.id.ordered_broadcast:
31             Intent intent2 = new Intent();
32             intent2.putExtra("msg", "这是一条有序广播");
33             intent2.setAction("BC_One");
34             sendOrderedBroadcast(intent2, null);
35             break;
36         case R.id.sticky_broadcast:
37             Intent intent3 = new Intent();
38             intent3.putExtra("msg", "这是一条有序广播");
39             intent3.setAction("BC_Three");
40             sendStickyBroadcast(intent3);
41             IntentFilter intentFilter = new IntentFilter("BC_Three");
42             mbr3 = new MyBroadcastReceiver3();
43             registerReceiver(mbr3, intentFilter);
44             break;
45         }
46     }
47     
48 //    @Override
49 //    protected void onDestroy() {
50 //        // TODO Auto-generated method stub
51 //        super.onDestroy();
52 //        unregisterReceiver(mbr2);
53 //        unregisterReceiver(mbr3);
54 //    }
55 }

 1 package com.example.broadcastdemo1;
 2 
 3 import android.content.BroadcastReceiver;
 4 import android.content.Context;
 5 import android.content.Intent;
 6 import android.os.Bundle;
 7 import android.util.Log;
 8 
 9 public class MyBroadcastReceiver2 extends BroadcastReceiver{
10 
11     @Override
12     public void onReceive(Context context, Intent intent) {
13         // TODO Auto-generated method stub
14         String str = intent.getStringExtra("msg");
15         Log.i("info","我是2！信息为:"+str );
16         Bundle bundle = new Bundle();
17         bundle.putString("test", "经过处理的数据");
18         setResultExtras(bundle);
19 //        abortBroadcast();
20     }
21 
22 }

 1 package com.example.broadcastdemo1;
 2 
 3 import android.content.BroadcastReceiver;
 4 import android.content.Context;
 5 import android.content.Intent;
 6 import android.os.Bundle;
 7 import android.util.Log;
 8 
 9 public class MyBroadcastReceiver extends BroadcastReceiver{
10 
11     @Override
12     public void onReceive(Context context, Intent intent) {
13         // TODO Auto-generated method stub
14         String str = intent.getStringExtra("msg");
15         Log.i("info", "我是1！信息为:"+str);
16         Bundle bundle = getResultExtras(true);
17         String str2 = bundle.getString("test");
18         Log.i("info", "这是什么？"+str2);
19     }
20 
21 }

 1 package com.example.broadcastdemo1;
 2 
 3 import android.content.BroadcastReceiver;
 4 import android.content.Context;
 5 import android.content.Intent;
 6 import android.util.Log;
 7 
 8 public class MyBroadcastReceiver3 extends BroadcastReceiver{
 9 
10     @Override
11     public void onReceive(Context context, Intent intent) {
12         // TODO Auto-generated method stub
13         Log.i("info", "接收到了一条异步广播!");
14     }
15 
16 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.broadcastdemo1"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk
 8         android:minSdkVersion="8"
 9         android:targetSdkVersion="17" />
10     <uses-permission android:name="android.permission.BROADCAST_STICKY"/>
11 
12     <application
13         android:allowBackup="true"
14         android:icon="@drawable/ic_launcher"
15         android:label="@string/app_name"
16         android:theme="@style/AppTheme" >
17         <activity
18             android:name="com.example.broadcastdemo1.MainActivity"
19             android:label="@string/app_name" >
20             <intent-filter>
21                 <action android:name="android.intent.action.MAIN" />
22 
23                 <category android:name="android.intent.category.LAUNCHER" />
24             </intent-filter>
25         </activity>
26         <receiver 
27             android:name="com.example.broadcastdemo1.MyBroadcastReceiver">
28             <intent-filter >
29                 <action android:name="BC_One"/>
30             </intent-filter>
31         </receiver>
32     </application>
33 
34 </manifest>