android更新极光后报错

java.lang.NoClassDefFoundError: Failed resolution of: Lcn/jpush/android/api/JPushInterface;
Caused by: java.lang.ClassNotFoundException: 
    Didn't find class "cn.jpush.android.api.JPushInterface" on path: 
        DexPathList[[zip file "/data/app/com.isales.isalesbaby-2/base.apk"],
        nativeLibraryDirectories=[/data/app/com.isales.isalesbaby-2/lib/arm, /vendor/lib, /system/lib]]
Suppressed: java.lang.ClassNotFoundException: cn.jpush.android.api.JPushInterface
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available