Exception raised during rendering: java.util.Locale.toLanguageTag()Ljava/lang/String; Exception details are logged in Window > Show View > Error Log
经网上查找资料得知: sdk使用的W结尾的版本 比如API 20: Android 4.4W,因为W是给Android Watch用的。
将其改为API19后能看到布局效果。
Exception raised during rendering: java.util.Locale.toLanguageTag()Ljava/lang/String; Exception details are logged in Window > Show View > Error Log