Android BroadcastReceiver

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    ⑴.静态注册需要自定义一个 BroadcastReceiver 类(继承 BroadcastReceiver 就好)，如下：

public class StaticReceiver extends BroadcastReceiver {

	@Override
	public void onReceive(Context context, Intent intent) {
		
		String msg = intent.getStringExtra("msg");
		Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
	}
}

        <!-- 注册自定义静态广播接收器 -->  
        <receiver android:name="com.xjl.brd.receiver.StaticReceiver">  
            <intent-filter>  
                <action android:name="com.byread.static" />  
            </intent-filter>  
        </receiver>  

receiver的属性：

        <receiver android:enabled=["true" | "false"]
          android:exported=["true" | "false"]
          android:icon="drawable resource"
          android:label="string resource"
          android:name="string"
          android:permission="string"
          android:process="string" >
    		. . .
		</receiver>

private static final String ACTION_STATIC = "com.byread.static"; // 静态注册的Action
Log.e(TAG, "发送自定义静态注册广播消息");
Intent intent = new Intent();
intent.setAction(ACTION_STATIC);
intent.putExtra("msg", "接收静态注册广播成功！");
sendBroadcast(intent);

private static final String ACTION_DYNAMIC = "com.byread.dynamic"; // 动态注册的Action

	/**
	 * 动态注册的 Receiver
	 */
	private BroadcastReceiver mDynamicReceiver = new BroadcastReceiver() {

		@Override
		public void onReceive(Context context, Intent intent) {

			Log.e("MainActivity", "接收自定义动态注册广播消息");

			if (intent.getAction().equals(ACTION_DYNAMIC)) {

				String msg = intent.getStringExtra("msg");
				Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
			}
		}
	};

  ⑵在 onStart() 方法中实现广播的注册

	@Override
	protected void onStart() {
		super.onStart();
		// 注册自定义动态广播消息
		IntentFilter filter_dynamic = new IntentFilter();
		filter_dynamic.addAction(ACTION_DYNAMIC);
		registerReceiver(mDynamicReceiver, filter_dynamic);
	}

	@Override
	protected void onPause() {
		super.onPause();
		unregisterReceiver(mDynamicReceiver);
		unregisterReceiver(mSystemReceiver);
	}

Log.e(TAG, "发送自定义动态注册广播消息");
Intent intent2 = new Intent();
intent2.setAction(ACTION_DYNAMIC);
intent2.putExtra("msg", "接收动态注册广播成功！");
sendBroadcast(intent2);

Intent intent = new Intent();
intent.setAction(BROADCAST_ACTION);
intent.putExtra("name", "qqyumidi");
sendBroadcast(intent);

sendBroadcast(intent)
sendBroadcast(intent, receiverPermission)
sendBroadcastAsUser(intent, userHandler)
sendBroadcastAsUser(intent, userHandler,receiverPermission)。

    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

        <!-- 注册静态系统WIFI广播接收器 -->
        <receiver android:name="com.xjl.brd.receiver.SystemReceiver" >
            <intent-filter>
                <action android:name="android.net.wifi.RSSI_CHANGED" />
                <action android:name="android.net.wifi.STATE_CHANGE" />
                <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
            </intent-filter>
        </receiver>

优点：

  1，按优先级的不同，优先 Receiver 可对数据进行处理，并传给下一个 Receiver

private LocalBroadcastManager mLocalBroadcastManager; //应用内广播

	/**
	 * 实例一个 LocalBroadcastManager 动态注册的广播
	 */
	private BroadcastReceiver mLocalReceiver = new BroadcastReceiver() {
		
		@Override
		public void onReceive(Context context, Intent intent) {
			
			Log.e(TAG, "接收 LocalBroadcastManager 动态注册广播消息");
			
			if (intent.getAction().equals(ACTION_LOCAL)) {
				
				String tMsg = intent.getStringExtra("msg");
				Toast.makeText(context, tMsg, Toast.LENGTH_SHORT).show();
			}
		}
	};

	protected void onStart() {
		super.onStart();
		
		//注册 LocalBroadcastManager 动态广播消息
		IntentFilter tFilterLocal=new IntentFilter();
		tFilterLocal.addAction(ACTION_LOCAL);
		
		mLocalBroadcastManager = LocalBroadcastManager.getInstance(this);
		mLocalBroadcastManager.registerReceiver(mLocalReceiver, tFilterLocal);
	}

    Log.e(TAG, "使用 LocalBroadcastManager 发送广播消息");
    Intent tIntentLocal = new Intent();
    tIntentLocal.setAction(ACTION_LOCAL);
    tIntentLocal.putExtra("msg", "接收 LOCAL 动态注册广播成功！");
    //这里使用 LocalBroadcastManager 发送广播，使用 sendBroadcast 无效
    mLocalBroadcastManager.sendBroadcast(tIntentLocal);

	@Override
	protected void onPause() {
		super.onPause();
		//注销广播		
		mLocalBroadcastManager.unregisterReceiver(mLocalReceiver); 
	}

		Intent intent = new Intent();
		intent.setAction(BROADCAST_ACTION);
		intent.addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES);
		intent.putExtra("name", "qqyumidi");
		sendBroadcast(intent);

注2：在3.1以前，相信不少 app 可能通过静态注册方式监听各种系统广播，以此进行一些业务上的处理（如即时 app 已经退出，仍然能接收到，可以启动 service 等..）,3.1 后，静态注册接受广播方式的改变，将直接导致此类方案不再可行。于是，通过将 Service 与 App 本身设置成不同的进程已经成为实现此类需求的可行替代方案。

以上内容多是来自网络，我只是起到再总结的作用，下面是我自己总结广播的一个Demo

http://download.csdn.net/detail/xiaojinlai123/9472598

Android BroadcastReceiver

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原文地址：http://blog.csdn.net/xiaojinlai123/article/details/50981109