Adding two numbers from Edittext fields-CodePudding

fun add(num1: EditText, num2: EditText){
        try {
            num1.toString().toInt()
            num2.toString().toInt()
            answer.setText((num1   num2).toString())
        } catch (e: NumberFormatException) {
            answer.text = "Input Error"
        }
    }

I'm trying to make an integer calculator and have a problem.

answer.setText((num1   num2).toString())

Here the addition symbol is highlighted in red. The text of the error is huge. What could be the problem?

CodePudding user response：

Use getText() method of EditText to get the value from a EditText.

Change your code like the below

val value1 = num1.getText().toString().toInt()

val value2 = num1.getText().toString().toInt()

answer.setText((value1   value2).toString())

CodePudding user response：

Rafiul and Tenfour04 answer above is correct.. You need to take value from edittext before converting it to string. what you do at you code is convert the whole edittext to string not the value. And I think you need a variable to contain value from edittext. So it will look like this:

var a = num1.getText().toString().toInt()
var b = num2.getText().toString().toInt()
answer.setText((a   b).toString())

CodePudding user response：

num1 and num 2 are EditTexts and you are adding the EditTexts.. this is the main mistake.

From your end you are type casting the values of EditTexts but not getting the values of editText and not saving in the separate variables.

Just get & save the values in separate variables: as @Bobby suggested:

var a = num1.getText().toString().toInt()
var b = num2.getText().toString().toInt()

And then perform addition.

answer.setText((a   b).toString())