android 性能优化--禁用广播接收器

只有当应用在前台的时候才可以启用广播接收器

1.广播接收模式为成禁用。

manifest.xml

　　<receiver android:name=".ReceiverName" android:enabled="false">

 

2.广播接收器在onResume（）中启用，在onPause（）中禁用。

 1 public class TestActivity extends Activity{
 2 
 3     private void enableReceiver(boolean enabled){
 4         PackageManager pm = getPackageManager();
 5         ComponentName receiverName = new ComponentName(getApplicationContext(),ReceiverName.class);
 6         int newState;
 7 
 8         if(enabled){
 9             newState = PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
10         }else{
11             newState = PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
12         }
13 
14         pm.setComponentEnabledSetting(receiverName,newState,PackageManager.DONT_KILL_APP);
15     }
16     @Override
17     protected void onPause(){
18         super.onPause();
19         unregisterReceiver(mReceiver);
20         enableReceiver(false);//没在前台时候要隐藏
21     }
22 
23     @Override
24     protected void onResume(){
25         super.onResume();
26         if( mReceiver == null ) {
27             //创建receiver
28         }
29         registerReceiver(mReceiver,new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
30         enableReceiver(true);
31     }
32 
33 }

 

posted @ 2015-07-07 10:07  firerdong  阅读(1013)  评论(0)  编辑  收藏  举报