Android: Getting value from a textfield without button

Question

I need to know that how can i take value from an edit text field without pressing button..i.e I need to change the content of another text field as soon as user enters the value in first text field or edit text to be specific..Is there any method for that..??

http://stackoverflow.com/questions/4310525/android-on-edittext-changed-listener See this post, — Gjordis, Sep 09 '13 at 10:04

score 4 · Answer 1 · answered Sep 09 '13 at 10:03

you can use TextWatcher for that purpose when you change or add a text this listener is called so on every entered text you get event and can change value of another text or button.

et1.addTextChangedListener(new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            // TODO Auto-generated method stub
        }

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

            // TODO Auto-generated method stub
        }

        @Override
        public void afterTextChanged(Editable s) {

            // TODO Auto-generated method stub
        }
    });

don't forget to press tick mark to indicate that this is right answer — anddevmanu, Sep 10 '13 at 07:34

Gil Allen · Accepted Answer · 2013-09-09T14:25:52.973

Java is Object oriented language, you need to have in mind to which event you are referring. In case of a button (which you don't want) you are doing something WHEN the button is pressed.

So what are you looking for is the event which related to the EditText you are editing.

What is written by anddevmanu are the events of the EditText. So if you have

//creating Edit text;
EditText youEditText;
//connecting to the xml layout
youEditText = (EditText)findViewById(R.id.yourEditTestID);
yourEditText.addTextChangedListener(new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            // Perform your action when the text is changed
        }

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

            // TODO Auto-generated method stub
        }

        @Override
        public void afterTextChanged(Editable s) {

            // Perform your action after the text is changed
        }
    })

;

score 0 · Answer 3 · answered Sep 09 '13 at 10:53

Try this code

              EditText e=new EditText(getApplicationContext());
    e.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count)                   {
            // TODO Auto-generated method stub
            //your code.......
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub

        }
    });

Android: Getting value from a textfield without button

3 Answers3