onresume - android unfortunately stopped after resuming activity for a long time -


i creating simple application. while using application, when click home , go app , work time 10 15 minutes.

when app, show "unfortunately app stopped" message. , app closes suddenly.

exception throws :

make sure class name exists, public, , has empty constructor public @ android.app.fragment.instantiate(fragment.java:601) fragmentstate.instantiate(fragment.java:98) fragmentmanagerimpl.restoreallstate(fragmentmanager.java:1759) @ ndroid.app.instrumentation.callactivityoncreate(instrumentation.java:1088) @ android.app.activitythread.performlaunchactivity(activitythread.java:2302)


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