Split lib_main was defined multiple times

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最佳答案

For those who wonder what InstantRun is (first setting in the picture):

And yes disabling that setting fixes the issue.

Edit 01/19/16

'com.android.tools.build:gradle:2.0.0-alpha6' was released three days ago. Using that new version, the "Split lib_main was defined multiple times" error is gone and installation of the app succeeds but now I get a runtime error:

java.lang.RuntimeException: Unable to instantiate application
com.android.tools.fd.runtime.BootstrapApplication:
java.lang.ClassNotFoundException: Didn't find class
"com.android.tools.fd.runtime.BootstrapApplication" on path:
DexPathList[[zip file "/data/app/com.onegravity.k10.pro2-2/base.apk",
zip file "/data/app/com.onegravity.k10.pro2-/split_lib_main.apk"]


Caused by: java.lang.ClassNotFoundException: Didn't find class
"com.android.tools.fd.runtime.BootstrapApplication" on path:
DexPathList[[zip file "/data/app/com.onegravity.k10.pro2-2/base.apk",
zip file "/data/app/com.onegravity.k10.pro2-2/split_lib_main.apk"]


Suppressed: java.io.IOException: No original dex files found for dex location
/data/app/com.onegravity.k10.pro2-2/base.apk


Suppressed: java.lang.ClassNotFoundException:
com.android.tools.fd.runtime.BootstrapApplication

Turning off instant run eliminates that error. Let's wait for com.android.tools.build:gradle:2.0.0-alpha7...

Edit 01/25/16

'com.android.tools.build:gradle:2.0.0-alpha7' was released two days ago.

Getting the same exception as with 2.0.0-alpha6

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Just delete build folder of appmodule and Rebuild the project!

This will fix the issue!.

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I ran into this issue after refactoring and changing app name in gradle. Following AskQ's lead, I rebuilt the project (following a slightly different path):

Build-> Clean Project

followed by

Build-> Rebuild Project

Solved the issue

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Android studio 2.3.3 It worked for me after disabling Instant run in settings...

Go to Settings-> Build,Execution and Development-> Instant Run -> Uncheck Enable Instant Run to hotswap then clean project and Rebuild your project again!!

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It might happen because of your package name is in uppercase, so you must change it back to lowercase.

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Recovery:

Deleting the (projectFolder)/app/build folder and re-building worked for me. (as answered by @AskQ)

I wonder if Build > Clean Project would have worked as well; from the Android Studio GUI menus.

Avoidance:

In my case the problem seems to have occurred because I had copy pasted a project, so 2 projects had the same name.
There are like other causes too, learning what they are can help users avoid this concern.