Android 黑屏狀態下開屏代碼

Android 黑屏狀態下開屏代碼:

1. public class WakeUpScreen extends Activity {
2. PowerManager.WakeLock wakeLock;
3. String TAG="started";
4. @Override
5. protected void onCreate(Bundle savedInstanceState) {
6. super.onCreate(savedInstanceState);
8. PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
9. KeyguardManager keyguardManager = (KeyguardManager) getSystemService(KEYGUARD_SERVICE);
10. KeyguardLock keyguardLock = keyguardManager.newKeyguardLock("");
11. if( !pm.isScreenOn() )
12. {
13. wakeLock = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP |PowerManager.SCREEN_DIM_WAKE_LOCK, this.getClass().getCanonicalName());
14. wakeLock.acquire();
16. keyguardLock.disableKeyguard();
17. }else{
18. keyguardLock.reenableKeyguard();
19. }
20. Intent intent=new Intent();
21. intent.setClass(this, AgainstTheft.class);
22. startActivity(intent);
23. this.lockScreen();
24. }
26. @Override
27. protected void onPause() {
28. super.onPause();
29. wakeLock.release();
30. }
32. @Override
33. protected void onDestroy() {
35. super.onDestroy();
36. }
37. }