java - R cannot be resolved to a variable on CastCompanionLibrary in Eclipse -

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i want use castcomponaionlibrary i'm using eclipse , not android studio. created new project , copied castcompanionlibrary sources it. added references to:

  • android-support-v4
  • android-support-v7-appcompat
  • android-support-v7-mediarouter
  • google-play-services_lib

in new project these compilation errors:

r cannot resolved variable minicontroller.java /castcompanionlibrary-android-master/src/com/google/sample/castcompanionlibrary/widgets line 87 java problem

it indirectly referenced required .class files videocastcontrolleractivity.java ideas?

you need import android-support-v7-gridlayout existing project , add to: preferences->android->add.

also ...-mediarouter must linked ...-appcompat in order work properly.

once cleaned .xml files (i mean no errors @ all) can clean , should trick.

and don't need v4 long make use of v7 (everything included in newer version).

reference: http://blog.burnayev.com/2009/11/android-developer-tip-regenerating.html


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