when i pass a variable from the main method, my app crash

Question

im using android studio and im making an app but i have this problem when i pass the variable from my main to the class, my app crash.

its show me a massage that the app has stopped

this is how i pass the variable

 bravo b = new bravo();
        b.updatetext(Correctcounter);

and this is my method in the class

public void updatetext(int x) {
   TextView scoreView = (TextView)findViewById(R.id.score);
   scoreView.setText(""+x);
}

please post the stacktrace of your crash.. it's difficult to find the error without that — Katharina, Jan 23 '18 at 15:10
Is Correctcounter an int? It looks like an Object to me. Also, what is the crash? — Gilad Eshkoli, Jan 23 '18 at 15:11

score 0 · Answer 1 · answered Jan 23 '18 at 15:12

0

You can't access views from classes that are not UI.

You should never access a view from a custom class.

Views must be accessed from Activity or Fragment!

Change your logic to match this requirement.

answered Jan 23 '18 at 15:12

Eduardo Herzer

but you can't use `findViewById()` in a custom class... Why do you know that @samir saadi is using a class that is not a fragment or activity? – Katharina Jan 23 '18 at 15:14
Thats right... so maybe he extended some android class to use `findViewById()`. And initialized it the wrong way – Eduardo Herzer Jan 23 '18 at 15:15
im new for android i thought that i can pass the varable like that – samir saadi Jan 23 '18 at 15:33
ill change my logic thanks for help – samir saadi Jan 23 '18 at 15:33
If your view R.id.score is inside activity A, you must access it through activity A. You can't find a view from Activity A inside Activity B. – Eduardo Herzer Jan 23 '18 at 15:41

1 Answers1