Factory method to create a new ViewDragHelper. @param forParent Parent view to monitor @param cb Callback to provide information and receive e

Attempt to capture the view with the given pointer ID. The callback will be involved. This will put us into the "dragging" state. If we've already cap

Find the topmost child under the given point within the parent view's coordinate system. The child order is determined using {@link me.imid.swipebackl

Set up contentView which will be moved by user gesture @param view

The result of a call to this method is equivalent to {@link #processTouchEvent(MotionEvent)} receiving an ACTION_CANCEL event.

添加到底部的监听.

Check if we've crossed a reasonable touch slop for the given child view. If the child cannot be dragged along the horizontal or vertical axis, motion

Clamp the magnitude of value for absMin and absMax. If the value is below the minimum, it will be clamped to zero. If the value is above the maximum,

Check if any of the edges specified were initially touched in the currently active gesture. If there is no currently active gesture this method will r

Called when one of the subscribed edges in the parent view has been touched by the user while no child view is currently captured. @param edgeFlags A