【Android Studio】SDK 更新至Android N後，在xml預覽視窗出現Rendering Problem

"Failed to load the LayoutLib: com/android/layoutlib/bridge/Bridge : Unsupported major.minor version 52.0"

解決：

Usually you get error: Unsupported major.minor version 52.0

If you have installed Android N, change Android rendering version with older one and the problem will disappear.

ref:
http://stackoverflow.com/a/35917202