How can I restrict my edittext to allow 0-125 to be entered, without allowing anything >125 to be entered?

Question

Here is the code I'm trying :

public void onTextChanged(CharSequence s, int start, int before, int count) {
            try {

            String strEnteredVal = edtMaxAge.getText().toString();

            if(!strEnteredVal.equals("")) {
                int num = Integer.parseInt(strEnteredVal);
                if (num < 125) {
                    edtMaxAge.setText(num);
                } else {
                    Toast.makeText(getContext(), "max age should be less than 125 ", Toast.LENGTH_SHORT).show();
                    edtMaxAge.setText("");
                }
            }
            } catch (NumberFormatException ex) {
                // Do something
            }
        }

When I enter a number >= 125 I need to show a popup message, like "max age should be less than 125", without accepting the characters.

whats the error you are facing.? – Nitesh Aug 17 '17 at 07:35 — Nitesh, Aug 17 '17 at 07:35
in this case my app crashes . – Dolly Rosy Aug 17 '17 at 08:09 — Dolly Rosy, Aug 17 '17 at 08:09

score 2 · Answer 1 · answered Aug 17 '17 at 07:59

Most likely you are facing a kind of endless recursion, when you enter some text onTextChanged method is invoked and it executes this line edtMaxAge.setText(num); which triggers onTextChanged again.

Try to use InputFilter instead of TextWatcher. Here you can find an example.

score 1 · Accepted Answer · answered Aug 17 '17 at 08:52

public void afterTextChanged(Editable editable) {

try {

          if(!TextUtils.isEmpty(editable) {
                initial = editable.toString();
                int num = Integer.parseInt(initial);
                if (num < 125) {
                    edtMaxAge.setText(num);
                } else {
                    Toast.makeText(getContext(), "max age should be less 
                 than 125 ", Toast.LENGTH_SHORT).show();
                    edtMaxAge.setText("");
                    return;
                }
            }

} catch (NumberFormatException ex) {
                // Do something
            }
        }

score 0 · Answer 3 · answered Aug 17 '17 at 08:08

0

Use InputFilter.
It gives a lot of choices to filter your input such as capital letters, numbers within certain limit etc.
Here is the exact answer what you need

answered Aug 17 '17 at 08:08

Rohit Singh

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How can I restrict my edittext to allow 0-125 to be entered, without allowing anything >125 to be entered?

3 Answers3