Int in string does not change when i change the int value

Question

So I'm making a code that uses int value in a string(hardcoded btw), it works but when I incremented the value of the int by button click, the int in the string does not change as the increment.

int indexOfQuestion= 1; 
numberOfQuestion.setText("Question " + indexOfQuestion + " from " + lengthOfQuestion + " :" );
switch(v.getId()):
case R.id.next:
indexOfQuestion = indexOfQuestion+1;

so when I clicked the button, indexOfQuestion in numberOfQuestion stays 1. How do i change it automatically as I intended without long verbose codes? thanks

you have to declare int indexOfQuestion= 1; globally or set text in your click event — mitesh makwana
– mitesh makwana, Commented Jan 9, 2019 at 8:33

Adam · Accepted Answer · 2019-01-09 09:00:01Z

5

What actually you are doing is calling this statement each time whenever you click the button:

 int indexOfQuestion = 1;

What you need to do is change the scope of int indexOfQuestion = 1; and take it to outside of the method body.

public class Test {
     private int indexOfQuestion = 1; 
}

Instead of putting it inside onClick function.

edited Jan 9, 2019 at 9:00

Adam

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answered Jan 9, 2019 at 8:03

Nouman Ch

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Comments

Matin Gdz · Accepted Answer · 2019-01-09 08:04:05Z

1

it won't change because you setText before you increment int value. if you want to apply changes, you should setText again after the incrementation.

int indexOfQuestion= 1;

numberOfQuestion.setText("Question " + indexOfQuestion + " from " + lengthOfQuestion + " :" );
switch(v.getId()):
case R.id.next: indexOfQuestion = indexOfQuestion+1;
numberOfQuestion.setText("Question " + indexOfQuestion + " from " + lengthOfQuestion + " :" );

answered Jan 9, 2019 at 8:04

Matin Gdz

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1 Comment

Muhammad Fadli Firdaus Over a year ago

Okay, I had in mind of doing this, but I thought it was too verbose than necessary. Thanks!

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