ClearableEditText.java

public class ClearableEditText
    extends EditText
    implements View.OnTouchListener, View.OnFocusChangeListener, TextWatcherAdapter.TextWatcherListener {

  public interface OnTextClearedListener {
    void wasClearedText();
  }

  private Drawable              drawables;
  private OnTextClearedListener textClearedListener;
  private OnTouchListener       touchListener;
  private OnFocusChangeListener focusChangeListener;

  public ClearableEditText(Context context) {
    super(context);
    init();
  }

  public ClearableEditText(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
  }

  public ClearableEditText(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
  }

  private void init() {
    drawables = getCompoundDrawables()[2];
    if (drawables == null) {
      drawables = getResources().getDrawable(android.R.drawable.presence_offline);
    }
    drawables.setBounds(0, 0, drawables.getIntrinsicWidth(), drawables.getIntrinsicHeight());
    setClearIconVisible(false);
    super.setOnTouchListener(this);
    super.setOnFocusChangeListener(this);
    addTextChangedListener(new TextWatcherAdapter(this, this));
  }

  public void setOnTextClearedListener(OnTextClearedListener listener) {
    this.textClearedListener = listener;
  }

  @Override
  public void setOnTouchListener(OnTouchListener listener) {
    this.touchListener = listener;
  }

  @Override
  public void setOnFocusChangeListener(OnFocusChangeListener listener) {
    this.focusChangeListener = listener;
  }

  @Override
  public boolean onTouch(View v, MotionEvent event) {
    if (getCompoundDrawables()[2] != null) {
      boolean tappedX = event.getX() > (getWidth() - getPaddingRight() - drawables.getIntrinsicWidth());
      if (tappedX) {
        if (event.getAction() == MotionEvent.ACTION_UP) {
          setText("");
          if (textClearedListener != null) {
            textClearedListener.wasClearedText();
          }
        }
        return true;
      }
    }
    if (touchListener != null) {
      return touchListener.onTouch(v, event);
    }
    return false;
  }

  @Override
  public void onFocusChange(View v, boolean hasFocus) {
    setClearIconVisible(isNotEmpty(getText()));
    if (focusChangeListener != null) {
      focusChangeListener.onFocusChange(v, hasFocus);
    }
  }

  @Override
  public void onTextChanged(EditText view, String text) {
    setClearIconVisible(isNotEmpty(text));
  }

  protected void setClearIconVisible(boolean visible) {
    boolean wasVisible = (getCompoundDrawables()[2] != null);
    if (visible != wasVisible) {
      Drawable x = visible ? drawables : null;
      setCompoundDrawables(
          getCompoundDrawables()[0],
          getCompoundDrawables()[1],
          x,
          getCompoundDrawables()[3]
      );
    }
  }

  private boolean isNotEmpty(CharSequence str) {
    return !(TextUtils.isEmpty(str));
  }

}