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R and R.drawable are two different classes within the Android framework, both of which inherit from Object. They seem very similar to me; what's different about them?

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  • This question is discussed on meta Commented Oct 2, 2015 at 7:23

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Android.R is a set of built in constants provided by the android SDK. The R class represents the resources in the Android.R xml file.

The R.drawable class contains resources which can be drawn on to the screen. E.g. Bitmaps, NinePatchDrawble etc...

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