Set time between alert dialogs

Question

I am showing an alert when a user exits a certain area:

   /*Function to show alert when Geofence breached*/
   private void showAlert() {
       final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Geofence Breached");
        builder.setMessage("User has breached the Geofence Boundary!");
        builder.setPositiveButton(android.R.string.ok, null);
        builder.show();
    }

And I am calling it like so:

 if( distance[0] > mCircle.getRadius()  ){                      
     showAlert();

}

Is there any way to set it that an alert only goes off every 2 minutes as the location is getting checked all the time then the notification keeps appearing. I have read about, Timers, Timertasks and alarmManagers but I dont think it will work for me. Any help would be appreciated.

You want to cancel the dialog after 3 mins from the time it opened ? — Triode, Feb 24 '14 at 15:45
@RajeshCP No I seen a solution to that, my user may click OK and at the moment it displays another alert instantly, I want to set it that an alert can only be shown every 2 minutes if possible. — Natalie Carr, Feb 24 '14 at 15:47

score 1 · Accepted Answer · answered Feb 24 '14 at 16:30

Have a member variable in your Activity/Service to record the time when the dialog was last shown:

long timeDialogShown = 0;

When checking whether to display the dialog, compare the time now with the time that the dialog was last shown. If more than 2 minutes have elapsed, or if it never has been shown before, display the dialog and update the timestamp. Otherwise simply do nothing.

if( distance[0] > mCircle.getRadius() )
{
    long timeNow = System.currentTimeMillis()/1000;  //Timestamp in seconds
    if ( (timeNow - timeDialogShown) > 120 || timeDialogShown == 0)  //Show if 2 minutes have passed
    {
        timeDialogShown = System.currentTimeMillis()/1000; //Timestamp in seconds
        showAlert();
    }
}

score 0 · Answer 2 · answered Feb 24 '14 at 15:50

0

Here it is, sir.

final AlertDialog dialog = ....
new Handler().postDelayed(new Runnable() 
{
  public void run() 
  {
    dialog.dismiss();
  }
}, 1000 * 60 * 2);

It will dismiss the dialog after 2 mins (1000 ms * 60 sec * 2 mins)

answered Feb 24 '14 at 15:50

Manitoba

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Thank you, please see my comments, I am not looking to dismiss the dialog I am looking to set a delay between showing it. – Natalie Carr Feb 24 '14 at 16:03

score 0 · Answer 3 · edited May 23 '17 at 10:26

See this -https://stackoverflow.com/a/6203816/881771 You need to setup a dismiss listener on your dialog, which blocks your showDialog() method for 2 mins.

Maintain a boolean value that suggest if two mins have passed since last alert was shown/dismissed.

boolean twoMinsElapsed=true;

Inside your code where you are display alertDialog check this boolean value as well

if (distance[0] > mCircle.getRadius() && twoMinsElapsed) {
           //block the showDialog() method until this value is set to true again
            twoMinsElapsed=false;
            showDialog();
        }

Setup a dismisslistener for your alertdialog

alertDialog.setOnDismissListener(new OnDismissListener() {

    @Override
    public void onDismiss(DialogInterface dialog) {
        new Handler().postDelayed(new Runnable() {

            @Override
            public void run() {
               //Set this boolean value back to true. will be called after two mins
                twoMinsElapsed= true;
            }

        }, 120000);

    }
});

Consider this as a pseudo code :)

Set time between alert dialogs

3 Answers3