Android中BroadcastReceiver使用总结

Android中BroadcastReceiver使用分为动态注册BroastcastReceiver ，静态注册BroastcastReceiver

1、动态注册BroastcastReceiver。

定义BroadcastReceiver：

	                private BroadcastReceiver bcr1 = new BroadcastReceiver() { 
				@Override
				public void onReceive(Context context, Intent intent) {
					// TODO Auto-generated method stub
					 String action = intent.getAction();  
			         Toast.makeText(context, "动态:"+action, 1000).show();  
					
				}  
		     }; 

 注册registerReceiver(bcr1, new IntentFilter(ACTION_1));代码如下。关键代码是注册代码registerReceiver(bcr1, new IntentFilter(ACTION_1))，其他是一些简单的按钮， 及绑定的Click事件。

	 Button btn1,btn2,btn3;  
	 static final String ACTION_1 = "com.example.broadcastreceiverdemo.ACTION_1";  
	 static final String ACTION_2 = "com.example.broadcastreceiverdemo.ACTION_2";  
	 static final String ACTION_3 = "com.example.broadcastreceiverdemo.ACTION_3";  

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		btn1 = (Button)this.findViewById(R.id.button1);
		btn1.setOnClickListener(new ClickEvent());
		
		btn2 = (Button)this.findViewById(R.id.button2);
		btn2.setOnClickListener(new ClickEvent());
		
		btn3 = (Button)this.findViewById(R.id.button3);
		btn3.setOnClickListener(new ClickEvent());
		
		registerReceiver(bcr1, new IntentFilter(ACTION_1));
	}

 发送广播

	  class ClickEvent implements OnClickListener {

  		@Override
  		public void onClick(View v) {
  			// TODO Auto-generated method stub
  			if(v == btn1)
  			{
  				Intent intent = new Intent(ACTION_1);
  				sendBroadcast(intent);
  			}
  			if(v == btn2)
  			{
  				Intent intent = new Intent(ACTION_2);
  				sendBroadcast(intent);
  			}
  			if(v == btn3)
  			{
  				IntentFilter filter = new IntentFilter();
  				filter.addAction(Intent.ACTION_BATTERY_LOW);
  				filter.addAction(ACTION_3);
  				
  				registerReceiver(bcr2, new IntentFilter(ACTION_3));
  				
  				Intent intent = new Intent(ACTION_3);
  				intent.putExtra("Conuntry", "China");
  				intent.putExtra("City", "ShangHai");
  				sendBroadcast(intent);
  			}
  		}

   其中 v == btn1为发送至内部动态注册的BroadcastReceiver;

       v == btn2为发送至内部静态注册的BroadcastReceiver;

　　 v == btn3为发送至系统级内部动态注册BroadcastReceiver(bt1和bt3基本一样，只是稍微加了addAction以及Intent的putExtra);

2 静态注册BroastcastReceiver。静态注册更要烦些，要在Androidmanifest.xml中注册。

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <receiver android:name="cls2">
            <intent-filter>
                <action android:name="com.example.broadcastreceiverdemo.ACTION_2"></action>
            </intent-filter>
        </receiver>
        <activity
            android:name="com.example.broadcastreceiverdemo.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>
    </application>

 并且要实现一个类继承BroadcastReceiver

public class cls2 extends BroadcastReceiver{

	@Override
	public void onReceive(Context context, Intent intent) {
		// TODO Auto-generated method stub
		String action = intent.getAction();  
	    Toast.makeText(context, "静态:"+action, 1000).show();  

	}
}