java.lang.NullPointerException: Attempt to get length of null array


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Attempt to get length of null array

Stack trace

java.lang.NullPointerException: Attempt to get length of null array
	at com.example.accurat.faisal.helper.Utils.getFilePaths(Utils.java:42)
	at com.example.accurat.faisal.Pictures.onCreateView(Pictures.java:45)
	at android.support.v4.app.Fragment.performCreateView(Fragment.java:2184)
	at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1298)
	at android.support.v4.app.FragmentManagerImpl.moveFragmentsToInvisible(FragmentManager.java:2323)
	at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2136)
	at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2092)
	at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1969)
	at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:620)
	at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143)
	at android.support.v4.view.ViewPager.populate(ViewPager.java:1268)
	at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:668)
	at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:630)
	at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:611)
	at android.support.design.widget.TabLayout$ViewPagerOnTabSelectedListener.onTabSelected(TabLayout.java:2178)
	at android.support.design.widget.TabLayout.dispatchTabSelected(TabLayout.java:1155)
	at android.support.design.widget.TabLayout.selectTab(TabLayout.java:1148)
	at android.support.design.widget.TabLayout.selectTab(TabLayout.java:1118)
	at android.support.design.widget.TabLayout$Tab.select(TabLayout.java:1413)
	at android.support.design.widget.TabLayout$TabView.performClick(TabLayout.java:1523)
	at android.view.View$PerformClick.run(View.java:22596)
	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:7325)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

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