Android: How to Convert a number in a Buttons text to integer?

Question

I'm making a simple dice rolling app as a way to learn some basics about Android Studio.

The method called onClick is shown below:

public void setSide(View v){
    Button b = (Button)v;
    sides = Integer.getInteger(b.getText().toString(),-1);
}

It seems to be passing -1 to sides no matter what, and all the buttons calling this method have only numbers in their strings (ex: "2", "20", "100", etc). Is there a way to fix this?

EDIT: I should probably explain that sides is local, and is used in another method, doRoll which is called the the Click of another button. This method sets the text of a textview to roll(sides), a method which returns a number from 1-sides if sides > 1, otherwise it returns -999. I have sides initialized to 20, and when I press the rollBtn before anything else, it works fine.

check with one codition if(!TextUtils.isEmpty(b.getText().toString()){sides = Integer.getInteger(b.getText().toString());} else{ sides = -1;} — Ajinkya
– Ajinkya, Commented Mar 5, 2016 at 5:18

Vivek Mishra · Accepted Answer · 2016-03-05 05:12:21Z

1

Try like this

sides = Integer.parseInt(b.getText().toString());

answered Mar 5, 2016 at 5:12

Vivek Mishra

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5 Comments

GoonyKnightMan Over a year ago

This works, but I'm still getting an error... I think it may be in the displaying of the roll. It warned me when I tried to use (Integer)(roll(sides)).toString(), and I'm not sure how to use the String.format(params) method. Could you tell me how to make it so the format() method prints just an integer?

GoonyKnightMan Over a year ago

the popup Android Studio gives me one with String locale, Object... args and another with String format, String locale, Object... args I'm not sure which one to use

Vivek Mishra Over a year ago

Can you explain more clearly what and in what form you want to format

GoonyKnightMan Over a year ago

I just want to put an int in a TextView. When I tried to use the Integer.toString() method, I got a warning saying not to do so, and to use the String.format() method instead, but I'm not sure how to use it, as I've never worked with it before.

Vivek Mishra Over a year ago

for that purpose use String.valueOf() method

Sadeq Shajary · Accepted Answer · 2016-03-05 05:13:33Z

1

You can use this:

sides = Integer.parseInt(b.getText().toString());

answered Mar 5, 2016 at 5:13

Sadeq Shajary

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Comments

himanshu.tiwari · Accepted Answer · 2016-03-05 05:19:04Z

0

Try this and let me know:

public void setSide(View v){
Button b = (Button)v;
sides = Integer.parseInt(b.getText().toString());
}

answered Mar 5, 2016 at 5:19

himanshu.tiwari

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Comments

Ajinkya · Accepted Answer · 2016-03-05 05:21:24Z

0

check with only one condition :-

if(!TextUtils.isEmpty(b.getText().toString())){
    sides = Integer.getInteger(b.getText().toString());
} else {
    sides = -1;
}

answered Mar 5, 2016 at 5:21

Ajinkya

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Comments

Ferencz Andras · Accepted Answer · 2016-03-05 06:30:36Z

0

sides = Integer.parseInt(button.getText().toString());

it works for me

answered Mar 5, 2016 at 6:30

Ferencz Andras

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