1 adb 发送广播
adb shell am broadcast -a com.android.launcher4.launcherReceiver --es path "/mnt/sdcard/xx.apk" --ei action 1 --ei versionCode 21
2 adb 更新系统私有应用
adb remount
adb push G:\launcher\Launcher4_24.apk /system/priv-app/
adb shell chmod 0644 /system/priv-app/Launcher4.apk
3 adb 打开已经安装的应用
adb shell am start
-a android.intent.action.MAIN
-c android.intent.category.LAUNCHER
-n breakan.test/breakan.test.TestActivity