How to determine if an input in EditText is an integer?

Question

Hi I\'m a newbie in Android Programming.

I\'m trying to build an activity which includes an edittext field and a button. When user type in an

Answer 1

Update:

You can control the EditText to only accept numbers

or check it programmatically

In Kotlin

val number = editText123.text.toString().toIntOrNull() 
val isInteger = number != null

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In Java

String text = editText123.getText().toString();
try {
   int num = Integer.parseInt(text);
   Log.i("",num+" is a number");
} catch (NumberFormatException e) {
   Log.i("",text+" is not a number");
}