静态和动态注册广播接收者 72集

来源：互联网发布：中国石油数据编辑：程序博客网时间：2024/06/04 17:48

转载请注明出处：http://blog.csdn.net/u011569040/article/details/45290445

笔记来源：尚学堂_尧玮_072集-静态和动态注册广播接收者

两种广播发送的方式，清单中注册广播接收者是永久的，代码注册是临时的

public class MainActivity extends Activity {MyReceive2 myReceive2;Button btnSendBroadcast_1;Button btnSendBroadcast_2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);btnSendBroadcast_1 = (Button) findViewById(R.id.btnSendBroadcast_1);btnSendBroadcast_2 = (Button) findViewById(R.id.btnSendBroadcast_2);//封装成一个方法，该代码来注册清单文件registerReceiver();//第一种方法发送广播（清单里注册的）btnSendBroadcast_1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent("com.example.broadcast.MyReceive1");intent.putExtra("key", "Broadcast_1发送的数据");sendBroadcast(intent);}});//第二种方法发送广播（内部类，在代码里注册）btnSendBroadcast_2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent("com.example.broadcast.MyReceive2");intent.putExtra("key", "Broadcast_2发送的数据");sendBroadcast(intent);}});}//代码注册BroadcastReceiver的方法private void registerReceiver() {myReceive2 = new MyReceive2();IntentFilter filter = new IntentFilter();filter.addAction("com.example.broadcast.MyReceive2");registerReceiver(myReceive2, filter);}class MyReceive2 extends BroadcastReceiver{//一种是在清单里面注册，另一种用java代码注册即如下内部类@Overridepublic void onReceive(Context context, Intent intent) {Log.i("main", "MyReceive2.onReceive() : "  + intent.getStringExtra("key"));}}@Overrideprotected void onDestroy() {super.onDestroy();//当退出时，取消广播接收者的注册unregisterReceiver(myReceive2);}}

public class MyReceive1 extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {//收到广播时调用这个方法Log.i("main", "MyReceive1.onReceive: "  + intent.getStringExtra("key"));}}

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.broadcast"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="18" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.broadcast.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <receiver android:name="com.example.broadcast.MyReceive1">            <intent-filter >                <action android:name="com.example.broadcast.MyReceive1"/>                <!-- 只要发送广播的字符串是这个name，就可以收到广播 -->            </intent-filter>        </receiver>    </application></manifest>

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