How to change the color of EditText after change?

Question

I want the change the color of an android EditText if text contains '(' and ')'. Brackets have special meaning and that string need to change the color. Please anyone help.

Follow this question. Seems to be doing same thing. http://stackoverflow.com/questions/18055104/set-text-color-for-a-specific-text-in-android-edittext — thestar, Dec 24 '13 at 19:03
possible duplicate of [How to set text color of TextView in code?](http://stackoverflow.com/questions/4602902/how-to-set-text-color-of-textview-in-code) — zed_0xff, Dec 25 '13 at 06:26

score 3 · Answer 1 · answered Dec 24 '13 at 18:45

use TextWatcher for EditText

example

editText.addTextChangedListener(new TextWatcher() {

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

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

        }

        @Override
        public void afterTextChanged(Editable s) {
            if (!TextUtils.isEmpty(s)) {
                String text = s.toString();
                if(text.contains("(") || text.contains(")")) {
                    editText.setTextColor(Color.RED);
                } else {
                    editText.setTextColor(Color.BLACK);
                }
            }
        }
    });

score 1 · Answer 2 · answered Dec 24 '13 at 18:44

1

EditText extends TextView which has a method called setTextColor(int color)

See Documentation

answered Dec 24 '13 at 18:44

Andrew Orobator

7,978
3
36
36

score 1 · Answer 3 · answered Dec 24 '13 at 18:44

1

   topic.setTextColor(Color.RED);   

  topic.setTextColor(Color.parseColor("#ffff0000"));

answered Dec 24 '13 at 18:44

keshav

3,235
1
16
22

Jeffrey Klardie · Accepted Answer · 2013-12-24T18:56:03.120

You can do something like this:

text.addTextChangedListener(new TextWatcher(){
    public void afterTextChanged(Editable s) {
        if(s.toString().contains("(") && s.toString().contains(")")){
            EditText text = (EditText) findViewById(R.id.id_of_text);
            text.setTextColor(color);
        }
    }
    public void beforeTextChanged(CharSequence s, int start, int count, int after){}
    public void onTextChanged(CharSequence s, int start, int before, int count){}
});

Note that you don't want to call findViewById() every time the text changes as it's pretty slow, so store that reference globally.

Edit: please note that the parameter color in setTextColor() is a color, and not a resource. So to get a color from the resource you need to use the following:

getResources().getColor(R.color.color_id);

score 1 · Answer 5 · answered Dec 24 '13 at 18:46

1

Have you looked at TextWatcher? (link)

You can inspect the entered string after every change, and format it as you see fit.

answered Dec 24 '13 at 18:46

Collin Flynn

751
6
8

How to change the color of EditText after change?

5 Answers5