How to lock the application with one plus 8pro?

We have to open many mobile phone applications every day. Generally, after we switch applications, we will run the previous application in the background. If the phone runs too much in the background, it will cause the phone to get stuck and get hot, so the system will automatically clean up the background applications. If you don't want to be cleaned up, how to lock the application with 8pro?

How to lock the application with one plus 8pro? 1. If you are using a full-screen gesture, slide from the bottom of the screen and pause to enter the multitasking interface.

If virtual key navigation is used, click the box key in the on-screen navigation key to enter the multi-task interface.

2. Press and hold the application to be locked, and click Lock in the pop-up options.

This paper takes one plus eight 8pro as an example and applies it to the hydrogen OS 1 1 system.