Radio button in android studio

Question

I have created 5 radio buttons and trying to display the total number of radio buttons I have selected but the app is getting crash.
I may be due to use of count++ because if I don't use count++ and just display a toast it is working fine.
https://code.sololearn.com/c3lEqSOXMIGY/?ref=app

Answer 1

You must have a reference to radiobuttons before using them...

Something like:

RadioButton r1 = findViewById(R.id.<id of radiobutton 1>);

Answer 2

Hi! Probably you want to put your RadioButtons inside a RadioGroup... look at this document:

https://docs.google.com/presentation/d/e/2PACX-1vQQOSFfWksA_o3KAPOZQL3dDADS2emVcDIizeHwYYXGwsTkY2QIboqiFp2GU6Iy_iaoVv_K3933cSU3/pub?start=false&loop=false&delayms=10000

Look at slides 13..15 (In spanish... sorry :) )

- or you must add a listener for every radiobutton...

...hope that helps.. :)

Answer 3

Yes I have already created all of them.
That's what I am saying, in the If statement if I try to print a Toast it is working but if I try to do an arithmetic operation like count++ the app gets crashing.

Answer 4

hussein [OFFLINE] can you please look at this

Answer 5

Thanks, I have assigned a listener for every radio button and my problem is solved.