under project, app->build,gradle(Module:app ).
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.2.0' compile 'com.android.support:design:23.2.0' }
Change 23.2.0 to 23.1.0, then synchronize your project, recompile your project, rebuild.