<com.baoyz.widget.BubbleImageView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:padding="10dp"
      android:src="@drawable/pic"
      app:bubble_angle="20dp"
      app:bubble_arrowHeight="50dp"
      app:bubble_arrowLocation="right"
      app:bubble_arrowOffset="10dp"
      app:bubble_arrowTop="50dp"
      app:bubble_arrowWidth="30dp" />