echo off
::adb临时加入到path环境变量
set My_PATH=.\SDK\adb
set PATH=%PATH%;%My_PATH%

md .\bak\
setlocal enabledelayedexpansion
::列出已装的app
for /f "usebackq delims=:== tokens=2,3,4" %%i in (`adb shell pm list packages -f -3`) do (

pause
for /f tokens^=6^ delims^=^' %%a in ('.\SDK\aapt2\aapt2.exe dump badging .\bak\%%k.apk ^|findstr /c:"versionName"') do set A=%%a
for /f tokens^=2^ delims^=^= %%a in ('adb shell dumpsys package %%k ^|findstr versionName') do set B=%%a
if %B% EQU %A% echo goto exit
if %B% GTR %A% echo goto 备份apk
pause

@if "%%k"=="" (adb pull %%i %%j.apk) else ( adb pull %%i==%%j .\bak\%%k.apk )
)
pause
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