Android Multiple Notifications and with multiple intents

Question

I have a fairly simple app that takes the input from a user and then sets it as a notification. The user can create as many notifications as he/she likes. I want the user to cli

Answer 1

You create multiple intents that are mixed. I cleaned up the code (but did not test it)

    NotificationManager nm = (NotificationManager) ctx
            .getSystemService(Context.NOTIFICATION_SERVICE);

    Resources res = ctx.getResources();

    // Creates an explicit intent for an Activity in your app
    Intent resultIntent = new Intent(this, ResultActivity.class);
    String pass = text.getText().toString();
    resultIntent.setData(new Uri.Builder().scheme("data")
            .appendQueryParameter("text", "my text").build());
    resultIntent.putExtra("title", pass);
    resultIntent.putExtra("uid", i);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    // Adds the back stack for the Intent (but not the Intent itself)
    stackBuilder.addParentStack(ResultActivity.class);
    // Adds the Intent that starts the Activity to the top of the stack
    stackBuilder.addNextIntent(resultIntent);
    PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,
            PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(ctx);
    builder.setSmallIcon(R.drawable.ic_launcher)
            .setLargeIcon(
                    BitmapFactory.decodeResource(res,
                            R.drawable.ic_launcher))
            .setTicker("Remember to " + text.getText())
            .setWhen(System.currentTimeMillis()).setAutoCancel(true)
            .setContentTitle(text.getText())
            .setContentIntent(resultPendingIntent);

    Notification n = builder.build();
    n.flags = Notification.FLAG_NO_CLEAR;
    nm.notify(i++, n);

    text.setText(null);

Answer 2

Use some random requestCode to seperate two notifications

PendingIntent pendingIntent = PendingIntent.getActivity(context, CommonTools.getRandomNumber(1, 100),
            notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

public int getRandomNumber(int min, int max) {
    // min (inclusive) and max (exclusive)
    Random r = new Random();
    return r.nextInt(max - min) + min;
}

Answer 3

I know this was a lot time ago but i feel that the answers have not said anything about the problem in your code. So the problem is pretty much here PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);

So you create a pendingIntent from the stackbuilder whith the flag of update_current. If you look at FLAG_UPDATE_CURRENT it says

 /**
 * Flag indicating that if the described PendingIntent already exists,
 * then keep it but replace its extra data with what is in this new
 * Intent. For use with {@link #getActivity}, {@link #getBroadcast}, and
 * {@link #getService}. <p>This can be used if you are creating intents where only the
 * extras change, and don't care that any entities that received your
 * previous PendingIntent will be able to launch it with your new
 * extras even if they are not explicitly given to it.
 */
public static final int FLAG_UPDATE_CURRENT = 1<<27;

So what happens in your use case is that you create two identical pendingintents from the stackbuilder and the second intent overrides the first one . Actually you never create a second you just update the extras of the first one.

So unfortunately there is no available flag for your use case , but there is a good hack around it. What you can do is use the setAction of your resultIntent and place a random string or a string that makes sense to your app.

eg. resultIntent.setAction("dummy_action_" + notification.id);

This will make your resultIntent unique enough , so that the pendingIntent will create it rather than updating a previous one.

Answer 4

Set different requestCode helps me create and update current intent.

val pendingIntent = PendingIntent.getActivity(
  this,
  notificationID,
  intent,
  PendingIntent.FLAG_UPDATE_CURRENT
)