React Native debugging techniques
A, Andrews simulator recall command Dev Setting
adb shell input keyevent 82
Second, when the picture does not come out, run this command, then re-run
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
Three, debug-ui provided
http://localhost:8081/debugger-ui/