问题
Split lib_main was defined multiple times
In "com.android.tools.build:gradle:2.0.0-alpha3" build success, But the errors that occur in the "com.android.tools.build:gradle:2.0.0-alpha5".
finally instant run work!! com.android.tools.build:gradle:2.0.0-alpha8 and gradle.properties "org.gradle.jvmargs = -Xmx8g" was resolved to change.
回答1:
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
回答2:
Just delete build folder of appmodule and Rebuild the project!
This will fix the issue!.
回答3:
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
回答4:
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.
回答5:
It might happen because of your package name is in uppercase, so you must change it back to lowercase.
回答6:
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!!
来源：https://stackoverflow.com/questions/34803518/split-lib-main-was-defined-multiple-times