android setText

Question

I want to calculate the circumference of a circle and put the results in a TextView.

   public void hesapla1(View v){

        double pi = 3.14;
        double yari = R.id.e1;

        double alan = pi * Math.pow(yari,2);

        sonuc1.setText((int) alan);

    }

Ask questions in English, even if it's bad. At least try, otherwise no one can understand you here. — Gennadii Saprykin, Mar 04 '16 at 15:49
Please provide the "Stopping Error", what's the exception stack trace that you are getting? — rastadrian, Mar 04 '16 at 15:51
Possible duplicate of [How To Set Text In An EditText](http://stackoverflow.com/questions/4590957/how-to-set-text-in-an-edittext) — Ricardo A., Mar 04 '16 at 16:50

score 2 · Answer 1 · edited Mar 04 '16 at 16:12

2

You can only set a String value in a TextView:

sonuc1.setText(String.valueOf(alan));

edited Mar 04 '16 at 16:12

rastadrian

1,025
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answered Mar 04 '16 at 15:51

Brijesh Chopda

195
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android setText

1 Answers1