android - Google calendar crash on strart -


i followed steps google guide:

https://developers.google.com/google-apps/calendar/quickstart/android

but when try run app 1 crashes directly, logcat

07-14 16:15:57.779: d/dalvikvm(2246): late-enabling checkjni 07-14 16:15:57.803: d/androidruntime(2246): shutting down vm 07-14 16:15:57.807: w/dalvikvm(2246): threadid=1: thread exiting uncaught exception (group=0xa6300288) 07-14 16:15:57.807: e/androidruntime(2246): fatal exception: main 07-14 16:15:57.807: e/androidruntime(2246): java.lang.runtimeexception: unable instantiate activity componentinfo{com.example.googlecalendar/com.example.googlecalendar.mainactivity}: java.lang.classnotfoundexception: com.example.googlecalendar.mainactivity 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.activitythread.performlaunchactivity(activitythread.java:1983) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.activitythread.handlelaunchactivity(activitythread.java:2084) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.activitythread.access$600(activitythread.java:130) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.activitythread$h.handlemessage(activitythread.java:1195) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.os.handler.dispatchmessage(handler.java:99) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.os.looper.loop(looper.java:137) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.activitythread.main(activitythread.java:4745) 07-14 16:15:57.807: e/androidruntime(2246):     @ java.lang.reflect.method.invokenative(native method) 07-14 16:15:57.807: e/androidruntime(2246):     @ java.lang.reflect.method.invoke(method.java:511) 07-14 16:15:57.807: e/androidruntime(2246):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:786) 07-14 16:15:57.807: e/androidruntime(2246):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:553) 07-14 16:15:57.807: e/androidruntime(2246):     @ dalvik.system.nativestart.main(native method) 07-14 16:15:57.807: e/androidruntime(2246): caused by: java.lang.classnotfoundexception: com.example.googlecalendar.mainactivity 07-14 16:15:57.807: e/androidruntime(2246):     @ dalvik.system.basedexclassloader.findclass(basedexclassloader.java:61) 07-14 16:15:57.807: e/androidruntime(2246):     @ java.lang.classloader.loadclass(classloader.java:501) 07-14 16:15:57.807: e/androidruntime(2246):     @ java.lang.classloader.loadclass(classloader.java:461) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.instrumentation.newactivity(instrumentation.java:1053) 07-14 16:15:57.807: e/androidruntime(2246):     @ android.app.activitythread.performlaunchactivity(activitythread.java:1974) 07-14 16:15:57.807: e/androidruntime(2246):     ... 11 more 

thanks help

in step 3 of the guide linked, says name application "calendarquickstart". produce package name of "com.example.calendarquickstart". in logcat posted, package name "com.example.googlecalendar". did enter "googlecalendar" appication name, or modify source files after copied , pasted web page?

check package names in manifest, build.gradle file, , source files same.

i followed steps in guide create demo project , able launch without error reported.


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