android - EmPubLite Crashing on Tutorial #16 -


once again running crash on tutorial right @ end:

04-17 17:39:36.278: e/androidruntime(536): fatal exception: main 04-17 17:39:36.278: e/androidruntime(536): java.lang.nullpointerexception 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.bookcontents.getchaptercount(bookcontents.java:26) 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.contentsadapter.getcount(contentsadapter.java:23) 04-17 17:39:36.278: e/androidruntime(536):  @ android.support.v4.view.viewpager.populate(viewpager.java:744) 04-17 17:39:36.278: e/androidruntime(536):  @ android.support.v4.view.viewpager.setadapter(viewpager.java:344) 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.empubliteactivity.setuppager(empubliteactivity.java:88) 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.modelfragment.delivermodel(modelfragment.java:36) 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.modelfragment.access$4(modelfragment.java:34) 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.modelfragment$contentsloadtask.onpostexecute(modelfragment.java:118) 04-17 17:39:36.278: e/androidruntime(536):  @ com.commonsware.empublite.modelfragment$contentsloadtask.onpostexecute(modelfragment.java:1) 04-17 17:39:36.278: e/androidruntime(536):  @ android.os.asynctask.finish(asynctask.java:631) 04-17 17:39:36.278: e/androidruntime(536):  @ android.os.asynctask.access$600(asynctask.java:177) 04-17 17:39:36.278: e/androidruntime(536):  @ android.os.asynctask$internalhandler.handlemessage(asynctask.java:644) 04-17 17:39:36.278: e/androidruntime(536):  @ android.os.handler.dispatchmessage(handler.java:99) 04-17 17:39:36.278: e/androidruntime(536):  @ android.os.looper.loop(looper.java:137) 04-17 17:39:36.278: e/androidruntime(536):  @ android.app.activitythread.main(activitythread.java:4745) 04-17 17:39:36.278: e/androidruntime(536):  @ java.lang.reflect.method.invokenative(native method) 04-17 17:39:36.278: e/androidruntime(536):  @ java.lang.reflect.method.invoke(method.java:511) 04-17 17:39:36.278: e/androidruntime(536):  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:786) 04-17 17:39:36.278: e/androidruntime(536):  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:553) 04-17 17:39:36.278: e/androidruntime(536):  @ dalvik.system.nativestart.main(native method)

there doesn't seem easy "caused by" tip in stack trace. went , combed on tutorial fine tooth comb. still can't see went wrong.


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