java.lang.IllegalStateException: System services not available to Activities before onCreate()
            at android.app.Activity.getSystemService(Activity.java:3989)
            at com.example.user.****.CustomAdapter.<init>(CustomAdapter.java:31)
            at com.example.user.****.MainActivity.refreshView(MainActivity.java:225)
            at com.example.user.****.MainActivity.deletePhoto(MainActivity.java:266)
            at com.example.user.****.CustomAdapter$1.onMenuItemClick(CustomAdapter.java:74)
            at android.widget.PopupMenu.onMenuItemSelected(PopupMenu.java:142)
            at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
            at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149)
            at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
            at com.android.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:156)
            at android.widget.AdapterView.performItemClick(AdapterView.java:292)
            at android.widget.AbsListView.performItemClick(AbsListView.java:1063)
            at android.widget.AbsListView$PerformClick.run(AbsListView.java:2519)
            at android.widget.AbsListView$1.run(AbsListView.java:3173)
            at android.os.Handler.handleCallback(Handler.java:605)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4482)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
            at dalvik.system.NativeStart.main(Native Method)