Android INSTALL_FAILED_UID_CHANGED

Question

I have been doing debugging on Android using my Nexus 4, however I recently encountered this error here. After doing some research on this error, it seems to be an issue wit

Answer 1

Here's something not covered by the existing answers. This was happening to me on emulator. If I reset user data, I get INSTALL_FAILED_DEXOPT the first time, but INSTALL_FAILED_UID_CHANGED after that. I found that rm -r /data/data/com.foo.bar is enough to reset to the first state.

The actual culprit in my case is a java method name that caused dexopt to fail. Pay very close attention to what's in logcat. Here's what gave it away:

I/PackageManager( 1275): Running dexopt on: com.foo.bar
E/dalvikvm( 2857): Invalid name: '__jni_setLocation'
E/dalvikvm( 2857): Trouble with item 14787 @ offset 0x43b68
E/dalvikvm( 2857): Cross-item verify of section type 0005 failed
E/dalvikvm( 2857): ERROR: Byte swap + verify failed
E/dalvikvm( 2857): Optimization failed
W/installd(  941): DexInv: --- END '/data/app/com.foo.bar-1.apk' --- status=0xff00, process failed
E/installd(  941): dexopt in='/data/app/com.foo.bar-1.apk' out='/data/dalvik-cache/data@app@com.foo.bar-1.apk@classes.dex' res=65280
W/PackageManager( 1275): Package couldn't be installed in /data/app/com.foo.bar-1.apk

I can't tell you why dexopt doesn't like some method names, but that was the problem.

Answer 2

Sometimes you have to also uninstall the data folders. For me, I had a package in userspace of com.kikin.cts, and also a folder directory in /data/data/com.kikin.cts. Kept getting INSTALL_FAILED_UID_CHANGED, but after removing the data folder, the error went away.