LogCat条目含义2

我现在不知道这个LogCat条目的含义。 有人能帮我吗?

12-26 18:33:09.651: E/AndroidRuntime(26038): FATAL EXCEPTION: main 12-26 18:33:09.651: E/AndroidRuntime(26038): java.lang.NullPointerException 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.AbsListView.obtainView(AbsListView.java:2090) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.ListView.measureHeightOfChildren(ListView.java:1485) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.ListView.onMeasure(ListView.java:1348) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.View.measure(View.java:12937) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.RelativeLayout.measureChild(RelativeLayout.java:579) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:392) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.View.measure(View.java:12937) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5045) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.View.measure(View.java:12937) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.LinearLayout.measureVertical(LinearLayout.java:812) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.View.measure(View.java:12937) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5045) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 12-26 18:33:09.651: E/AndroidRuntime(26038): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2180) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.View.measure(View.java:12937) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1227) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2700) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.os.Handler.dispatchMessage(Handler.java:99) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.os.Looper.loop(Looper.java:156) 12-26 18:33:09.651: E/AndroidRuntime(26038): at android.app.ActivityThread.main(ActivityThread.java:5099) 12-26 18:33:09.651: E/AndroidRuntime(26038): at java.lang.reflect.Method.invokeNative(Native Method) 12-26 18:33:09.651: E/AndroidRuntime(26038): at java.lang.reflect.Method.invoke(Method.java:511) 12-26 18:33:09.651: E/AndroidRuntime(26038): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 12-26 18:33:09.651: E/AndroidRuntime(26038): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 12-26 18:33:09.651: E/AndroidRuntime(26038): at dalvik.system.NativeStart.main(Native Method) 12-26 18:33:11.691: D/Process(26038): killProcess, pid=26038 12-26 18:33:11.691: D/Process(26038): dalvik.system.VMStack.getThreadStackTrace(Native Method) 12-26 18:33:11.691: D/Process(26038): java.lang.Thread.getStackTrace(Thread.java:599) 12-26 18:33:11.691: D/Process(26038): android.os.Process.killProcess(Process.java:813) 12-26 18:33:11.691: D/Process(26038): com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:104) 12-26 18:33:11.701: D/Process(26038): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693) 12-26 18:33:11.701: D/Process(26038): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690) 12-26 18:33:11.701: D/Process(26038): dalvik.system.NativeStart.main(Native Method) 

 java.lang.NullPointerException at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394) 
 ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, values); 

values中至少有一个null对象,你不能拥有它。


您可以阅读源代码并在此处看到这种情况:

 T item = getItem(position); if (item instanceof CharSequence) { text.setText((CharSequence)item); } else { text.setText(item.toString()); // Line 394, when item is null this throws an NPE }