Android – show activity even if the phone is in locked mode

How can I wake an Android device up and skip the ScreenLock

I want to display a dialog box from the broadcast receiver, but the Android API doesn't allow me to do so, so I use to start an activity from there and change the theme of this activity to theme

Now I want to display this activity even if the phone is in lock mode / sleep mode

Screen I can use the following flag to open Bu, but I have to unlock the key guard manually. I can't see my window on the lock screen

The difference is that I don't use full screen activity, i.e

android:theme="@android:style/Theme.Dialog

In my code I'm using

Window w = getWindow();
w.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | 
           WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | 
           WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

resolvent:

I didn't successfully implement this function by using these flags, but I succeeded by using wakelock and keyguardlock. The following is my work:

public class DismissLock extends Activity {

PowerManager pm;
WakeLock wl;
KeyguardManager km;
KeyguardLock kl;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    Log.i("INFO", "onCreate() in DismissLock");
    pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    km=(KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);
    kl=km.newKeyguardLock("INFO");
    wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP|PowerManager.ON_AFTER_RELEASE, "INFO");
    wl.acquire(); //wake up the screen
    kl.disableKeyguard();// dismiss the keyguard

    setContentView(R.layout.main);

}

@Override
protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
    wl.release(); //when the activiy pauses, we should realse the wakelock
}

@Override
protected void onResume() {
    // TODO Auto-generated method stub
    super.onResume();
    wl.acquire();//must call this!
}

}

Of course, you still need to declare permissions in the manifest file

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