Android keeps the screen on, while android keeps on

Android keeps the screen on, while android keeps on

Android keeps the screen bright, and PowerManager. WakeLock is used.

package com.hebaijun.wakelock;    import android.app.Activity;  import android.os.Bundle;  import android.os.PowerManager;    public class WakeLockActivity extends Activity {      PowerManager.WakeLock wakeLock;      /** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          wakeLock = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE, "WakeLockActivity");      }      @Override      protected void onPause() {          super.onPause();          if (wakeLock != null) {              wakeLock.release();          }      }      @Override      protected void onResume() {          super.onResume();          wakeLock.acquire();      }  }  　　

　　

You must add the permission <uses-permission android: name = "android. permission. WAKE_LOCK"/> to AndroidManifest. xml.

• SCREEN_BRIGHT_WAKE_LOCK indicates that the screen is on and the keyboard is not on.
• ON_AFTER_RELEASE indicates that the screen will remain on after the release method is executed, and the black screen will be displayed after the default timeout.
• It is best to make requests always on in the onResume method and release them in the onPause method.