adb install foo.apk
When using this command, if the apk exists, I should get the error *Failure [INSTALL_FAILED_ALREADY_EXISTS]*
adb install -r myapp-release.apk
In this case,the existing apk will be replaced, by retaining old data according to the docs,
'-r' means reinstall the app, keeping its data
Now how do I reinstall the app, but all previous data should be erased?
EDIT
I know we can do this
adb uninstall com.package.foo & adb install foo.apk
I just wanted to know if there is a command or something in adb itself.
Before the installation clean the data like this:
adb shell pm clear com.package.foo
then you can install normally using:
adb install foo.apk
or just run through your IDE
Try adb uninstall yourpackage.whatever.com, then install again. Or select Clear data on the phone for that application.
It's adb uninstall com.package.foo && adb install foo.apk, however the uninstall won't work if the app is a system app, which can't be uninstalled. There's the command adb shell pm clear packageName to clear a certain app's data, however it may require root. To reinstall the apk as usual adb install -r app.apk
No. There is no (documented) way to do that with the adb install command. Instead, you should do this:
adb uninstall com.your.package
adb install foo.apk
adb install [-l] [-t] [-r] [-s] <file> - push this package file to the
device and install it
('-t' uses for install debug apk)
('-l' means forward-lock the app)
('-r' means reinstall the app, keeping its data)
('-s' means install on SD card instead of internal storage)
adb uninstall [-k] <package> - remove this app package from the device
('-k' means keep the data and cache directories)
If you want to install debug.apk file without clear the data:
adb install -t -r D:/debug.apk
If you want to install debug.apk file with clear the data:
adb shell pm clear com.package.app
adb install -t D:/debug.apk
And to start the app on Device via adb command:
adb shell am start -n com.package.app/com.package.app.activity.MainActivity
来源：https://stackoverflow.com/questions/12483720/adb-how-to-reinstall-an-app-without-retaining-the-data