CODEWITHSUNDEEP
javaandroidcalculator
Irakli
Irakli

Reputation: 27

Why does addition not work with this code?

I am new to AndroidStudio. I have managed appending numbers and digits but can't make an addition.

buttonEnter.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            EditText numbers = (EditText) findViewById(R.id.numbers);
            int ans = 0;
            String str1;
            String str2;
            if (numbers.toString().contains("+")){
                str1 = numbers.toString().substring(0, numbers.toString().indexOf('+'));
                str2 = numbers.toString().substring(numbers.toString().indexOf('+') + 1, 
                numbers.length());
                ans = Integer.parseInt(str1) + Integer.parseInt(str2);
                numbers.setText(Integer.toString(ans));
            }

        }
    });

This is my code for the addition part (haven't tried other operations yet), when I press Enter, the app does nothing.

Upvotes: 0

Views: 65

Answers (2)

Nikos Hidalgo
Nikos Hidalgo

Reputation: 3756

You're not getting the text from the EditText. Add the following method at numbers before you do the filtering:

numbers.getText()

Upvotes: 2

Shahad Mahmud
Shahad Mahmud

Reputation: 420

Change this line of code numbers.toString().contains("+") with this numbers.getText().toString().contains("+")

Upvotes: 1

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