If you want “listen” to the text changes from an EditText you have to use the TextWatcher. Bellow I will show you an example of TextWatcher:
//first, we create an EditText EditText answer = new EditText(this); //second, we create the TextWatcher TextWatcher textWatcher = new TextWatcher() { @Override public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { } @Override public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { } @Override public void afterTextChanged(Editable editable) { //here, after we introduced something in the EditText we get the string from it String answerString = answer.getText().toString(); //and now we make a Toast //modify "yourActivity.this" with your activity name .this Toast.makeText(yourActivity.this,"The string from EditText is: "+answerString,0).show(); } }; //third, we must add the textWatcher to our EditText answer.addTextChangedListener(textWatcher);