Question

I am developing an app that shows the location of the caller when an incoming call come on incoming call screen. I am succesfully fetching the location from my algorithm but I am not able to display it on Deafult Incoming Screen.

If i use A toast then it just appears for 1 or 2seconds, I want ihe information shoulkd appear till the call picked.

What should I use Toast, Notification or something , and how to do that.

In short how can I show something on Incoming Call Screen till the call picked up

       class IncomingCallREceiver extends BroadcastReciever
       {
               void onRecieve()
              {
                //     here I want to show the Information
               }
        }

Answer 1

You are not able to override Android’s call screen, and with good reason, things may get spoofed!

With that said, a Dialog would most likely be the best solution to showing something before the user picks up. The easiest way to make a Dialog is with DialogFragments. However since Dialogs cannot be shown from receivers, you will need to start an Activity. So your onReceive() code should look something like this:

void onReceive(Context context, Intent intent)
          {
            Intent showDialogIntent = new Intent (context, DialogActivity.class);
            showDialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startIntent (showDialogIntent);               
          }

And then when your DialogActivity is started, it’s onCreate() method would make the Dialog and show it to the user.