Android notification

Question

I have a very simple project to test that at the event onCreate from screen 1 sends a notification, which by clicking opens screen 2.

Purposely, I quickly click on the notification to open the new screen (in order to test) doing a kind of "Stress" to simulate some kind of error.

The problem is that time opens normally and other times there is a white screen.

Why does this happen?

I tested on 3 devices:

• Samsung CORE 2 - DIDN’T WORK EVERY TIME.
• Samsung Galaxy S3 mini - WORKED ALL THE TIME.
• Samsung Galaxy s duos - GAVE PROBLEM A FEW TIMES

Does this have to do with RAM, processor? Or is my code running in the wrong order?

public void sendNotification() {

    int NOTIFICATION_ID = 1;

    NotificationManagerCompat nm = NotificationManagerCompat.from(this);

    Intent it = new Intent(this, NovaTela.class);
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    stackBuilder.addParentStack(NovaTela.class);
    stackBuilder.addNextIntent(it);
    PendingIntent pit = stackBuilder.getPendingIntent(
            0, PendingIntent.FLAG_CANCEL_CURRENT);

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setDefaults(Notification.DEFAULT_ALL)
                    .setAutoCancel(true)
                    .setContentIntent(pit)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle("Teste Notificação")
                    .setContentText("teste");

    nm.notify(NOTIFICATION_ID, mBuilder.build());
}

Answer 1

The why appears, time yes, time no, it is a bit complicated! Sometimes it can be the version of the System, among others. Try it this way :

final NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext());

final Intent i = new Intent(getApplicationContext(), NovaTela.class);

i.setFlags( Intent.FLAG_ACTIVITY_SINGLE_TOP );

builder.setTicker("Ticker text. . . ");
builder.setContentTitle(" Content title text....");
builder.setContentText("Description text....");
builder .setSmallIcon(android.R.drawable.ic_input_add);
builder.setAutoCancel(true);

final PendingIntent open = PendingIntent.getActivity(this, 12345, i, PendingIntent.FLAG_UPDATE_CURRENT);

builder.setContentIntent(open);
notificationManager.notify(12345, builder.build());