Disabling the send button when the EditText is empty when using imeOption= actionSend

Question

When the text is empty, we want to disable the button (which is how it\'s set on portrait mode) Any ideas?

Edit: I don\'t think it\'s clear but I can enable/disable

Answer 1

Add a TextChangedListener which will get called whenever the text inside the EditText gets changed.

message.addTextChangedListener(new TextWatcher() {

    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
    public void onTextChanged(CharSequence s, int start, int before, int count) {}

    public void afterTextChanged(Editable s) {
        if (s == null || s.length() == 0) {
           send.setEnabled(false);
           message.setImeOptions(EditorInfo.IME_FLAG_NO_ENTER_ACTION);
        }
        else {
          send.setEnabled(true);
          message.setImeOptions( /* whatever you previously had */ );
        }
}

Alternatively, you can also let your class implement the TextWatcher interface which makes the code a bit cleaner.

public class MyDialogFragment implements TextWatcher { ... }