首先看一下这段代码：usercontext.jsimport{createcontext,usecontext}from"react";constusercontext=createcontext({user:{name:'defaultuser',age:0},setuser:()=>{}//wecanalsopassstatehere.});exportconstthemeprovider=

 需求如下图实现系统录屏功能 frameworks/base/packages/SystemUI/src/com/android/systemui/screenrecord涉及代码ScreenRecordDialog#startBtnRecordingService#start#end ScreenMediaRecorder.java1、点击开始录屏frameworks/base/packages/SystemUI/src/