Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE

Question

I am currently trying to compile and test a small Android Application.

I am using Eclipse, and have SDK 4.2 (Api Level 17) installed. I\'ve set

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Answer 1

This was happening in my project because I was using an XML resource to set the version code.

AndroidManifest.xml:
android:versionCode="@integer/app_version_code"

app.xml:
64

This wasn't a problem in prior versions of adb, however, as of platform-tools r16 this is no longer being resolved to the proper integer. You can either force the re-install using adb -r or avoid the issue entirely by using a literal in the manifest:

android:versionCode="64"