屏幕关闭或锁定时，android broadcastreceiver？

Question

I have broadcastreceiver in my application and it's work good, when i connect with the smart phone to bluetooth device it's show me a alert dialog. But, if the screen is off or in the lock screen, it's not show me the alert dialog, and i want to show the alert dialog even if the smartphone on the lock screen or the screen off. How i can do this?

Thanks!

Answer 1

public class ScreenReceiver extends BroadcastReceiver {


    public static boolean wasScreenOn = true;

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
           //do something here

        }
    }
}

This is how you register the receiver.

IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
BroadcastReceiver mReceiver = new ScreenReceiver();
registerReceiver(mReceiver, filter);

Answer 2

Since you didn't provide any code, I cannot be sure about this. However, your problem might be related to the context from which you are declaring the Intent (if any), or anyway the dialog. Try to use context.getApplicationContext() instead of context / this:

final Intent dialogIntent = new Intent(context.getApplicationContext(), DialogActivity.class);
context.startActivity(dialogIntent);