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Attempt to invoke virtual method 'void android.support.v7.widget.ShareActionProvider.setShareIntent(android.content.Intent)' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.ShareActionProvider.setShareIntent(android.content.Intent)' on a null object reference	at com.example.android.sunshine.app.DetailFragment.onCreateOptionsMenu(DetailFragment.java:118)	at android.support.v4.app.Fragment.performCreateOptionsMenu(Fragment.java:1868)	at android.support.v4.app.FragmentManagerImpl.dispatchCreateOptionsMenu(FragmentManager.java:1989)	at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:276)	at android.support.v7.app.ActionBarActivity.superOnCreatePanelMenu(ActionBarActivity.java:276)	at android.support.v7.app.ActionBarActivityDelegate$1.onCreatePanelMenu(ActionBarActivityDelegate.java:79)	at android.support.v7.app.ActionBarActivityDelegateBase.preparePanel(ActionBarActivityDelegateBase.java:979)	at android.support.v7.app.ActionBarActivityDelegateBase.doInvalidatePanelMenu(ActionBarActivityDelegateBase.java:1182)	at android.support.v7.app.ActionBarActivityDelegateBase.access$100(ActionBarActivityDelegateBase.java:79)	at android.support.v7.app.ActionBarActivityDelegateBase$1.run(ActionBarActivityDelegateBase.java:115)	at android.os.Handler.handleCallback(Handler.java:739)	at android.os.Handler.dispatchMessage(Handler.java:95)	at android.os.Looper.loop(Looper.java:148)	at android.app.ActivityThread.main(ActivityThread.java:5417)	at java.lang.reflect.Method.invoke(Native Method)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)