java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.xunlong.softwaremanagermodule.AppAdapter.getView(AppAdapter.java:77)
at android.widget.AbsListView.obtainView(AbsListView.java:2255)
at android.widget.ListView.makeAndAddView(ListView.java:1790)
at android.widget.ListView.fillDown(ListView.java:691)
at android.widget.ListView.fillGap(ListView.java:655)
at android.widget.AbsListView.trackMotionScroll(AbsListView.java:5143)
at android.widget.AbsListView.scrollIfNeeded(AbsListView.java:3243)
at android.widget.AbsListView.onTouchMove(AbsListView.java:3587)
at android.widget.AbsListView.onTouchEvent(AbsListView.java:3431)
at android.view.View.dispatchTouchEvent(View.java:7706)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2210)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1945)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068)
at android.view.View.dispatchPointerEvent(View.java:7886)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3947)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3826)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3392)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3442)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3411)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3518)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3419)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3575)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3392)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3442)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3411)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3419)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3392)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5532)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5512)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5483)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5612)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:176)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:5585)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:5631)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer.java:542)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
at android.os.Handler.handleCallback(Handler.java:733)

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