如何阅读这个日志猫？

Question

我有两个 OnItemClickListeners 和两个按钮，一个 listview 和 2 个适配器。每个按钮都会设置适配器列表：

lv.setAdapter(adapt);
lv.setAdapter(adaptb);

我第一次运行它就可以了，但是当我再次单击该按钮时，这些红线会显示在 log cat 中并停止应用程序。

09-08 17:51:32.605: W/dalvikvm(24630): threadid=1: thread exiting with uncaught exception (group=0x41af9360)
09-08 17:51:32.635: E/AndroidRuntime(24630): FATAL EXCEPTION: main
09-08 17:51:32.635: E/AndroidRuntime(24630): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
09-08 17:51:32.635: E/AndroidRuntime(24630):    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at java.util.ArrayList.get(ArrayList.java:304)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at com.example.gdrgrg.CustomListAdapter.getView(CustomListAdapter.java:51)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.AbsListView.obtainView(AbsListView.java:2306)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.ListView.makeAndAddView(ListView.java:1769)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.ListView.fillDown(ListView.java:672)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.ListView.fillFromTop(ListView.java:733)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.ListView.layoutChildren(ListView.java:1622)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.AbsListView.onLayout(AbsListView.java:2141)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.View.layout(View.java:13844)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewGroup.layout(ViewGroup.java:4369)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1003)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.View.layout(View.java:13844)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewGroup.layout(ViewGroup.java:4369)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.View.layout(View.java:13844)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewGroup.layout(ViewGroup.java:4369)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1679)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1537)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1450)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.View.layout(View.java:13844)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewGroup.layout(ViewGroup.java:4369)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.View.layout(View.java:13844)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewGroup.layout(ViewGroup.java:4369)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1890)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1706)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1009)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4243)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.Choreographer.doCallbacks(Choreographer.java:555)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.Choreographer.doFrame(Choreographer.java:525)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.os.Handler.handleCallback(Handler.java:615)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.os.Handler.dispatchMessage(Handler.java:92)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.os.Looper.loop(Looper.java:137)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at android.app.ActivityThread.main(ActivityThread.java:4911)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at java.lang.reflect.Method.invokeNative(Native Method)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at java.lang.reflect.Method.invoke(Method.java:511)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
09-08 17:51:32.635: E/AndroidRuntime(24630):    at dalvik.system.NativeStart.main(Native Method)

Answer 1

09-08 17:51:32.635: E/AndroidRuntime(24630): FATAL EXCEPTION: main
09-08 17:51:32.635: E/AndroidRuntime(24630): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
09-08 17:51:32.635: E/AndroidRuntime(24630):    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)

这些行表明您正在尝试访问 ArrayList 的第 0 项，但 Arraylist 为空。你应该检查你的代码。您必须先填写您的 Arraylist，然后才能获取其中的一项。