android broadcastReceiver启用禁用

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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);        }@Overrideprotected void onPause() {// TODO Auto-generated method stubsuper.onPause();unregisterReceiver(mBatteryChangeReceiver);enableBatteryReceiver(false);}@Overrideprotected void onResume() {// TODO Auto-generated method stubsuper.onResume();if(mBatteryChangeReceiver == null){createBatteryChangeReceiver();}registerReceiver(mBatteryChangeReceiver, new IntentFilter(Intent.ACTION_BATTERY_OKAY));enableBatteryReceiver(true);}