问题
I know that adb install will not replace an existing package if it's of a different build type (i.e. debug vs. release).
Eclipse also successfully replaces the debug apks whenever I run a debug session.
But when I attempt adb install for replacing an existing release apk with another release apk (same package name!), I get a failure message:
adb install myapp-release.apk
pkg: /data/local/tmp/myapp-release.apk
Failure [INSTALL_FAILED_ALREADY_EXISTS]
745 KB/s (34310 bytes in 0.044s)
Wasn't that supposed to work? What am I missing?
回答1:
I suppose if the app is already installed, you need to supply the -r key:
adb install -r myapp-release.apk
From the adb help:
'-r' means reinstall the app, keeping its data
来源：https://stackoverflow.com/questions/9053791/why-does-adb-install-same-packagename-always-release-fail