텍스트 뷰에서 터치시 터치된 단어

aboutTextView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
                mOffset = aboutTextView.getOffsetForPosition(motionEvent.getX(), motionEvent.getY());
              //  mTxtOffset.setText("" + mOffset);
                Toast.makeText(HomeScreen.this, findWordForRightHanded(aboutTextView.getText().toString(), mOffset), Toast.LENGTH_SHORT).show();

            }
            return false;
        }
    });



private String findWordForRightHanded(String str, int offset) { // when you touch ' ', this method returns left word.
    if (str.length() == offset) {
        offset--; // without this code, you will get exception when touching end of the text
    }

    if (str.charAt(offset) == ' ') {
        offset--;
    }
    int startIndex = offset;
    int endIndex = offset;

    try {
        while (str.charAt(startIndex) != ' ' && str.charAt(startIndex) != '\n') {
            startIndex--;
        }
    } catch (StringIndexOutOfBoundsException e) {
        startIndex = 0;
    }

    try {
        while (str.charAt(endIndex) != ' ' && str.charAt(endIndex) != '\n') {
            endIndex++;
        }
    } catch (StringIndexOutOfBoundsException e) {
        endIndex = str.length();
    }

    // without this code, you will get 'here!' instead of 'here'
    // if you use only english, just check whether this is alphabet,
    // but 'I' use korean, so i use below algorithm to get clean word.
    char last = str.charAt(endIndex - 1);
    if (last == ',' || last == '.' ||
            last == '!' || last == '?' ||
            last == ':' || last == ';') {
        endIndex--;
    }

    return str.substring(startIndex, endIndex);
}