<com.bluemor.reddotface.view.DragLayout
    android:id="@+id/dl"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </RelativeLayout>
    
    <com.bluemor.reddotface.view.MyRelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </com.bluemor.reddotface.view.MyRelativeLayout>
    
</com.bluemor.reddotface.view.DragLayout>


DragLayout dl = (DragLayout) findViewById(R.id.dl);
dl.setDragListener(new DragListener() {
	@Override
	public void onOpen() {
	}

	@Override
	public void onClose() {
	}

	@Override
	public void onDrag(float percent) {
		//percent为打开的比例
	}
});