Android phones Keep the screen highlighting method _android

First contact with the Android application project, in the project quickly when the planning requirements add a highlight, each time is directly from the online Baidu, now do the game, but still this demand, here to back up a convenient follow-up search, after all, is their own write and verify that there is no problem:

First, add the code to the activity:

Member Variable:

Private Powermanager.wakelock wakelock = null; 
Rewrite two methods of parent activity and add logic:
@Override public 
  void Onresume () {
    super.onresume ();  
    Acquirewakelock (this); 
  } 
  @Override public 
  void OnPause () { 
    super.onpause (); 
    Releasewakelock (); 
  } 
  public void Acquirewakelock { 
    if (Wakelock = = null) { 
      PowerManager PowerManager = (powermanage R) (Context 
          . Getsystemservice (Context.power_service)); 
      Wakelock = Powermanager.newwakelock ( 
          powermanager.screen_dim_wake_lock, "my Tag"); 
      Wakelock.acquire (); 
    } 
  public void Releasewakelock () { 
    if (wakelock!= null && Wakelock.isheld ()) { 
      wakelock.release (); 
      Wakelock = null; 
    } 
  }

Then, add the following permissions in the Androidmanifest.xml:

 <uses-permission android:name= "Android.permission.WAKE_LOCK"/>