How does OPPO R9 mobile phone WeChat open the floating window?

Floating windows are an auxiliary function of many applications. It can be suspended above the screen by popping up a small window under certain circumstances, so that users can know it immediately and preview it quickly, similar to a short message pop-up.

Let's analyze the permission setting method of OPPO R9 mobile phone floating window:

Step 1: first, open the "mobile phone housekeeper" that comes with OPPOr9s, as shown in the red box in the figure.

Step 2, click "Permission Privacy" in the middle, and then click "Floating Window Management" shown in the red box.

Step 3: Manage the software floating window that needs to be closed or opened in the floating window management, but there is no WeChat in it, that is, it is impossible to manage the floating window of WeChat, as shown in the figure.

It doesn't matter if oppor9s mobile phone doesn't hide the floating window, after all, the floating window takes up a small space (except mandatory).