Enable and disable Button according to the text in EditText in Android

Question

I want to disable by Button if the words in the EditText is less than 3 words, and if the words in the EditText are more than 3 words then I want to enable it so that it can

Answer 1

You have to addTextChangedListener to your EditText

Like this:

yourEditText.addTextChangedListener(new TextWatcher() {
      @Override
      public void afterTextChanged(Editable arg0) {
         enableSubmitIfReady();
      }

      @Override
      public void beforeTextChanged(CharSequence s, int start, int count, int after) {
      }

      @Override
      public void onTextChanged(CharSequence s, int start, int before, int count) {
      }
    });

In that method, you should do like this:

 public void enableSubmitIfReady() {

    boolean isReady = yourEditText.getText().toString().length() > 3;    
    yourbutton.setEnabled(isReady);
  }

Hope it helps.