java.lang.IndexOutOfBoundsException：索引0无效，大小为0，有时我的appcrash和一段时间正常工作

Question

错误：

  

03-28 14：23：08.466 8743-8743 / com.furbonics.furbonicsexecutive   E / AndroidRuntime：致命异常：主要                                                                                   过程：com.furbonics.furbonicsexecutive，PID：8743                                                                                   java.lang.IndexOutOfBoundsException：索引0无效，大小为0                                                                                       在   java.util.ArrayList.throwIndexOutOfBoundsException（ArrayList.java:255）                                                                                       at java.util.ArrayList.get（ArrayList.java:308）                                                                                       在android.widget.ArrayAdapter.getItem（ArrayAdapter.java:337）                                                                                       在   android.widget.ArrayAdapter.createViewFromResource（ArrayAdapter.java:390）                                                                                       在android.widget.ArrayAdapter.getView（ArrayAdapter.java:362）                                                                                       在android.widget.Spinner.makeView（Spinner.java:592）                                                                                       在android.widget.Spinner.layout（Spinner.java:540）                                                                                       在android.widget.Spinner.onLayout（Spinner.java:502）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）                                                                                       在   android.widget.LinearLayout.layoutHorizo​​ntal（LinearLayout.java:1660）                                                                                       在android.widget.LinearLayout.onLayout（LinearLayout.java:1436）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）                                                                                       在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525）                                                                                       在android.widget.LinearLayout.onLayout（LinearLayout.java:1434）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.FrameLayout.layoutChildren（FrameLayout.java:453）                                                                                       在android.widget.FrameLayout.onLayout（FrameLayout.java:388）                                                                                       在android.widget.ScrollView.onLayout（ScrollView.java:1468）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.RelativeLayout.onLayout（RelativeLayout.java:1055）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）                                                                                       在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525）                                                                                       在android.widget.LinearLayout.onLayout（LinearLayout.java:1434）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.FrameLayout.layoutChildren（FrameLayout.java:453）                                                                                       在android.widget.FrameLayout.onLayout（FrameLayout.java:388）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）                                                                                       在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525）                                                                                       在android.widget.LinearLayout.onLayout（LinearLayout.java:1434）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.FrameLayout.layoutChildren（FrameLayout.java:453）                                                                                       在android.widget.FrameLayout.onLayout（FrameLayout.java:388）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671）                                                                                       在android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525）                                                                                       在android.widget.LinearLayout.onLayout（LinearLayout.java:1434）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.widget.FrameLayout.layoutChildren（FrameLayout.java:453）                                                                                       在android.widget.FrameLayout.onLayout（FrameLayout.java:388）                                                                                       在android.view.View.layout（View.java:14845）                                                                                       在android.view.ViewGroup.layout（ViewGroup.java:4631）                                                                                       在android.view.ViewRootImpl.performLayout（ViewRootImpl.java:2026）                                                                                       在android.view.ViewRootImpl.performTraversals（ViewRootImpl.java:1783）                                                                                       在android.view.ViewRootImpl.doTraversal（ViewRootImpl.java:1039）                                                                                       在   android.view.ViewRootImpl $ TraversalRunnable.run（ViewRootImpl.java:5648）                                                                                       在   android.view.Choreographer $ CallbackRecord.run（Choreographer.java:761）                                                                                       在android.view.Choreographer.doCallbacks（Choreographer.java:574）                                                                                       在android.view.Choreographer.doFrame（Choreographer.java:544）                                                                                       在   android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:747）                                                                                       在android.os.Handler.handleCallback（Handler.java:733）                                                                                     在android.o

Answer 1

您正在尝试从空数组中读取值

  

lang.IndexOutOfBoundsException：索引0无效，大小为0.

在访问代码中的值之前验证数组是否为空。

Answer 2

这意味着您无法获取数据。首先使用日志并检查是否显示输出，然后检查您的代码是否也包围您的代码以便通过try和catch获取。