交互 - Android版“微信，知乎”app的“右滑返回”功能是如何实现的？

Question

某次点击打开一个新页面后，在屏幕任意位置（微信需在屏幕左边边缘）向右滑动，即可实现返回的功能，同时还可以实时看到滑动状态。

请问这是如何实现的？

Answer 1

Phew, I just finished writing this function, please stay tuned for the release of SegmentFault for Android 2.6~
The solution I used is this ikew0ng/SwipeBackLayout

Answer 2

There are many ways to implement it.
One is to monitor gestures directly in the activity and move the DecorView.
One is to add a layer of defined views between DecorView and its subviews to handle gestures and effects. That's the one upstairs.

https://github.com/Jude95/SwipeBackHelper
Here are some improvements I made to ikew0ng/SwipeBackLayout.