Full Screen Notification only showing as a Heads Up

问题

I have been banging my head against the table with this problem for 3 days now, please tell me where I have strayed.

When I am getting an incoming VoIP call, I am trying to show a full screen notification, just like the PhoneApp does. I am ok with heads up, if the user is in an immersive activity. However, I am getting only a heads up notification, and never getting a full screen. I need to notification to ignore the lock screen as well.

Here is what I am doing:

    String callJson = call.toJson(uber).toString();
    uber.requestWakeState(UberVoice.WAKE_STATE_FULL);

    final Notification.Builder builder = new Notification.Builder(uber);
    builder.setSmallIcon(R.drawable.switch_notification);
    if (image != null) {
        builder.setLargeIcon(image);
    }
    builder.setOngoing(true);

    PendingIntent inCallPendingIntent =
            PendingIntent.getActivity(uber, 234,
                    UberVoice.createInCallIntent(), 0);
    builder.setContentIntent(inCallPendingIntent);

    builder.setContentText(body);
    builder.setUsesChronometer(false);

    builder.setContentTitle(title);

    builder.setCategory(Notification.CATEGORY_CALL);
    builder.setVisibility(Notification.VISIBILITY_PUBLIC);

    builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE), AudioManager.STREAM_RING);
    builder.setVibrate(new long[]{500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 500});

    builder.setPriority(Notification.PRIORITY_MAX);
    builder.setTicker(title);
    builder.setFullScreenIntent(inCallPendingIntent, true);

    builder.addAction(R.drawable.hangup_action, "Reject", CallService.getPendingIntent(uber, callJson, CallService.REJECT));
    builder.addAction(R.drawable.answer_action, "Answer", CallService.getPendingIntent(uber, callJson, CallService.ANSWER));

    NotificationManager notificationManager = (NotificationManager) uber.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = builder.build();
    notificationManager.notify(INCOMING_CALL_NOTIFICATION_ID, notification);

Here is the creatCallIntent code:

public static Intent createInCallIntent() {
    Intent intent = new Intent(Intent.ACTION_MAIN, null);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
            | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
            | Intent.FLAG_ACTIVITY_NO_USER_ACTION);
    intent.setClassName("<package>", IncomingCallActivity.class.getName());
    return intent;
}

And here is the IncomingCallActivity.onCreate()

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    int flags = WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
            | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
            | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON;

    getWindow().addFlags(flags);

    setContentView(R.layout.activity_incoming_call);

I have tried starting this activity directly(uber is Application reference)

Intent incomingCallIntent = new Intent(uber, IncomingCallActivity.class);
String callJson = call.toJson(uber).toString();
incomingCallIntent.putExtra("call", callJson);

incomingCallIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

uber.startActivity(incomingCallIntent);

What am I doing wrong?

回答1:

If I understood your question correctly, you forgot to add flag WindowManager.LayoutParams.FLAG_FULLSCREEN in IncomingCallActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    int flags = WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
            | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
            | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
            | WindowManager.LayoutParams.FLAG_FULLSCREEN;

    getWindow().addFlags(flags);

This combination needed to show activity while screen is locked. Hope it helps.

回答2:

Figured it out! It was something stupid just as I suspected.

In my IncomingCallActivity I had the following bit of code

public void onPause() {
    super.onPause();
    finish();
}

It turns out that something having to do with how Notifications get shown actually calls onPause, therefore finishing the activity.

Thanks to @JohanShogun for attempting to help out.

来源：https://stackoverflow.com/questions/32365177/full-screen-notification-only-showing-as-a-heads-up