android broadcastReceiver启用禁用_android receiver enabled

有时候我们需要在我们需要启用receiver的时候启用，不需要的时候就不想让代码去执行receiver里面的函数方法。

两种receiver，现在只看静态注册的receiver。因为动态注册的receiver更加容易的控制。

两点注意事项：

1，AndroidManifest文件中注册receiver时，默认receiver为禁用状态。android:enabled="false"

<receiver android:name=".BatteryReceiver" android:enabled="false">
            <intent-filter >
                 <action android:name="android.intent.action.BATTERY_LOW"/>
            </intent-filter>
            <intent-filter >
                 <action android:name="android.intent.action.BATTERY_OKEY"/>
            </intent-filter>
            <intent-filter >
                 <action android:name="android.intent.action.ACTION_POWER_CONNECTED"/>
            </intent-filter>
            <intent-filter >
                 <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/>
            </intent-filter>
        </receiver>

2，在需要的时候将receiver启用，不需要时禁用。例如下面code，我们只有在本activity可见的界面启用，不可见界面禁用。

    private void enableBatteryReceiver(boolean enabled){
    	
    	PackageManager pm = getPackageManager();
    	ComponentName receiverName = new ComponentName(this,BatteryReceiver.class);
    	int newState = enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED:PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
    	pm.setComponentEnabledSetting(receiverName, newState, PackageManager.DONT_KILL_APP);
    
    }
	@Override
	protected void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
		unregisterReceiver(mBatteryChangeReceiver);
		enableBatteryReceiver(false);
	}
	@Override
	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
		if(mBatteryChangeReceiver == null){
			createBatteryChangeReceiver();
		}
		registerReceiver(mBatteryChangeReceiver, new IntentFilter(Intent.ACTION_BATTERY_OKAY));
		enableBatteryReceiver(true);
	}