Increase a char value by one

Question

I have an app with an EditText and a button named \"forward\". All I want is just when I type \"a\" in the EditText and click the button, the word \"b\

Answer 1

String value = edt.getText();
edt.setText(value + 1);

If the above is your code, then what you are doing is concatenating a 1 to the end of your value string. Thus, a button click would alter the displayed text from "your text" to "your text1". This process would continue on the next button click to show "your text11". The issue is really a type error.