Change button's text programmatically in android studio problem

Question

Why is this code wrong? It doesn't accept the setText function on a button.

findViewById(getResources().getIdentifier("button" + Integer.toString(i), "id", getPackageName()))
                .setText("abc");

But if I write like this

button1.setText("abc");

it is ok.

You can accept one answer (if it helps you) by click on big gray check button on its left side. If you wish you can add +10 points to any author of any good answer by click upper gray triangle — MaLa
– MaLa, Commented Dec 26, 2020 at 12:48

MaLa · Accepted Answer · 2020-12-21 09:54:32Z

2

Because findViewById returns a view. View does not have a method called setText(). You should define that the view is a Button which does have a method called setText(). You can do that this way.

((Button)findViewById(getResources().getIdentifier("button" + Integer.toString(i), "id", getPackageName()))).setText("abc");

edited Dec 21, 2020 at 9:54

answered Dec 21, 2020 at 9:49

MaLa

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2 Comments

JHON Over a year ago

It works, thank you. But I have a question: why I received a down vote?

MaLa Over a year ago

I do not know but I assume that similar questions have been already asked. For example this kind of answers your question. If this answers your question, you can accept it.

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