Error : Ambiguous method call. Both findViewById (int) in AppCompactActivity and Activity Error : Ambiguous method call. Both findViewById (int) in AppCompactActivity and Activity android android

Error : Ambiguous method call. Both findViewById (int) in AppCompactActivity and Activity


android android-studio android-studio-3.0 appcompatactivity android-appcompat

If you recently updated your project to API, Try doing

File -> Invalidate Caches / Restart

then

File -> Sync Project with Gradle Files

this resolve for me.

android android-studio android-studio-3.0 appcompatactivity android-appcompat

Upgrade to appcompat 27 solved this for me

android android-studio android-studio-3.0 appcompatactivity android-appcompat

For me, it was the compileSdkVersion which was different than the support libraries used

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