Error:Program type already present: android.arch.lifecycle.LiveData

Question

When I press the run button in Android Studio, my app compiles but shows this error (redacted):

Error:Program type a         


        

Answer 1

In my case, bumping targetSdkVersion and compileSdkVersion to 28, as well as using version 28 of all support libraries fixed the issue.

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I encountered this when I upgraded Glide. I got an error regarding a duplicate CoordinatorLayout. I solved that by using com.android.support:design:27.1.0, but then I got another error regarding LiveData$LifecycleBoundObserver.

After a few hours, I gave up and upgraded targetSdkVersion and compileSdkVersion to API 28, as well as using

implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:cardview-v7:28.0.0'

because YOLO. By dumb luck, it worked.