필터 목록보기 어댑터 어댑터

Question

어댑터가있는 ListView가 있습니다.

이 어댑터는 개체 목록을받습니다. 이러한 개체에는 isActivated 특성이 있습니다. 이 특성이 false 인 경우이 항목을 ListView에 표시하고 싶지 않지만 어댑터를 통과 한 개체 목록에서 개체를 삭제하지 않으려합니다.

어댑터의 getView() 메소드에서 null을 반환하려고 시도하지만 실제로는 그렇지 않습니다.

어떻게하면됩니까?

ERROR :

questions04-01 12:21:54.290: E/AndroidRuntime(5593): FATAL EXCEPTION: main 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): java.lang.NullPointerException 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.ListView.fillDown(ListView.java:692) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.ListView.fillFromTop(ListView.java:750) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.ListView.layoutChildren(ListView.java:1629) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.AbsListView.onLayout(AbsListView.java:1993) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.setChildFrame(LinearLayout.java:1542) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.layoutVertical(LinearLayout.java:1403) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.onLayout(LinearLayout.java:1314) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.setChildFrame(LinearLayout.java:1542) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1527) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.onLayout(LinearLayout.java:1316) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.setChildFrame(LinearLayout.java:1542) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.layoutVertical(LinearLayout.java:1403) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.onLayout(LinearLayout.java:1314) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.FrameLayout.onLayout(FrameLayout.java:400) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.setChildFrame(LinearLayout.java:1542) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.layoutVertical(LinearLayout.java:1403) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.LinearLayout.onLayout(LinearLayout.java:1314) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.widget.FrameLayout.onLayout(FrameLayout.java:400) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.View.layout(View.java:9606) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewGroup.layout(ViewGroup.java:3879) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewRoot.performTraversals(ViewRoot.java:1288) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.view.ViewRoot.handleMessage(ViewRoot.java:2066) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.os.Handler.dispatchMessage(Handler.java:99) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.os.Looper.loop(Looper.java:132) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat android.app.ActivityThread.main(ActivityThread.java:4126) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat java.lang.reflect.Method.invokeNative(Native Method) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat java.lang.reflect.Method.invoke(Method.java:491) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602) 
questions04-01 12:21:54.290: E/AndroidRuntime(5593): questionsat dalvik.system.NativeStart.main(Native Method) 

Answer 1

어댑터의 각 개체에 대한보기가 될 것입니다. 따라서 isActivated가 아니고 뷰가 보이지 않도록하고 싶습니다. getView()는 행의 높이가 0 인 뷰 유형을 반환합니다.

어댑터가 너무 많아서 어댑터에 수천 개의 항목이 없으면 목록을 작성하기 전에 필터링해야합니다.