java - Brothers, please help. How to solve this error?

Question

E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering

The instant chat system has this, and the mobile phone simulation interface after clicking Run cannot be displayed

Answer 1

The class cannot be found, check the configuration file to see if there is a problem with the SDK version.