NoClassDefFoundError: … R$styleable circlepageIndicator.java

how to solve error

Caused by: android.view.InflateException: Binary XML file line #43: Error inflating class com.viewpagerindicator.CirclePageIndicator

Caused by: java.lang.NoClassDefFoundError: com.app.skedule.R$styleable 10-03 13:24:46.541 31183-31183/? E/AndroidRuntime: at com.viewpagerindicator.CirclePageIndicator.(CirclePageIndicator.java:93)

after changing dependencies { classpath 'com.android.tools.build:gradle:1.0.0' }

to

dependencies { classpath 'com.android.tools.build:gradle:1.3.0' }