大家好,我正在开发一个应用程序,将下载所有的事件从谷歌日历到安卓设备。我找到了这个例子:但我收到错误,因为找不到类定义。请帮帮我。$Builder', referenced from method com.examples.gcalsync.CalendarSample.onCreate***
10-10 12:52:10.129702 (Lcom/google/api/services/calendar/Calendar$Builder;) in Lco
经过几次调试之后,我注意到没有一个实例变量是null的,并且NullPointerException来自Context.getExternalFilesDir(null)内部。谢谢10-10 18:55:56.424: E/AndroidRuntime(964): FATAL EXCEPTION: main
10-10 18:55:56.424:AndroidRuntime(964): at android.app.ActivityThread.performResumeActivity(Activi