java.lang.IndexOutOfBoundsException :Invalid index x, 大小为 x

Question

经过 3 个小时的尝试，我决定在这里询问，看看是否有人可以为我提供此错误的解决方案:java.lang.IndexOutOfBoundsException:无效索引 0，大小为 0

这是我的代码

public class ParcelAdapter extends BaseAdapter{
        private final Activity context;
        ParcelPOJO.Data items=new ParcelPOJO.Data();
        ParcelAdapter(Activity context, ParcelPOJO.Data items){
            this.context=context;
            this.items=items;

        }

        @Override
        public int getCount() {
            return items.getLive().size();
        }

        @Override
        public Object getItem(int position) {
            return  0;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }
        class ViewHolder {
            protected TextView eventCode;
            protected TextView eventStatus;
            protected TextView eventPrice;

        }
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            LayoutInflater inflater=context.getLayoutInflater();
            if(convertView==null) {
                convertView = inflater.inflate(R.layout.parcel_row, null);
            }
            final ViewHolder viewHolder = new ViewHolder();
            viewHolder.eventCode = (TextView) convertView.findViewById(R.id.pPackage_code);
            viewHolder.eventStatus = (TextView) convertView.findViewById(R.id.pPackedStatus);
            viewHolder.eventPrice =(TextView)convertView.findViewById(R.id.pPrice);
            convertView.setTag(viewHolder);
            ViewHolder holder = (ViewHolder) convertView.getTag();
                holder.eventCode.setText(items.getLive().get(position).getCodeNumber());
                holder.eventStatus.setText(items.getLive().get(position).getStatus());
                holder.eventPrice.setText(items.getLive().get(position).getOrderStorageShowPrice());
                holder.eventCode.setText(items.getProcessing().get(position).getCodeNumber());
                holder.eventStatus.setText(items.getProcessing().get(position).getStatus());
                holder.eventPrice.setText(items.getProcessing().get(position).getOrderStorageShowPrice());
                holder.eventCode.setText(items.getPacked().get(position).getCodeNumber());
                holder.eventStatus.setText(items.getPacked().get(position).getStatus());
                holder.eventPrice.setText(items.getPacked().get(position).getOrderStorageShowPrice());
//line 119                    holder.eventCode.setText(items.getSent().get(position).getCodeNumber());
                    holder.eventStatus.setText(items.getSent().get(position).getStatus());
                    holder.eventPrice.setText(items.getSent().get(position).getOrderStorageShowPrice());
                    holder.eventCode.setText(items.getReceived().get(position).getCodeNumber());
                    holder.eventStatus.setText(items.getReceived().get(position).getStatus());
                    holder.eventPrice.setText(items.getReceived().get(position).getOrderStorageShowPrice());

                return convertView;
            }
        }

日志猫

java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
        at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
        at java.util.ArrayList.get(ArrayList.java:304)
        at dedmd.dedmd.fragmentsparcel.Parcels$ParcelAdapter.getView(Parcels.java:119)
        at android.widget.AbsListView.obtainView(AbsListView.java:2267)
        at android.widget.ListView.measureHeightOfChildren(ListView.java:1244)
        at android.widget.ListView.onMeasure(ListView.java:1156)
        at android.view.View.measure(View.java:15172)
        at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
        at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
        at android.view.View.measure(View.java:15172)
        at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
        at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
        at android.view.View.measure(View.java:15172)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
        at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
        at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
        at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
        at android.view.View.measure(View.java:15172)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at android.view.View.measure(View.java:15172)
        at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:762)
        at android.view.View.measure(View.java:15172)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at android.view.View.measure(View.java:15172)
        at android.widget.LinearLayout.measureVertical(LinearLayout.java:833)
        at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
        at android.view.View.measure(View.java:15172)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
        at android.view.View.measure(View.java:15172)
        at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1848)
        at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1100)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1273)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
        at android.view.Choreographer.doCallbacks(Choreographer.java:555)
        at android.view.Choreographer.doFrame(Choreographer.java:525)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
        at android.os.Handler.handleCallback(Handler.java:615)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4745)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
        at dalvik.system.NativeStart.main(Native Method)

如果我删除此行，我会收到相同的错误，但无效索引 1，大小为 1

Answer 1

此方法告诉适配器有多少项:

  @Override
    public int getCount() {
        return items.getLive().size();
    }

显然数组 items.getSent() 并不像数组 items.getLive() 那么长 - 所以 Adapter 会尝试转到结束后的位置，无效。

编辑:

换句话说，您的 items 对象有多个数组。其中之一是 items.getLive()，另一个是 items.getSent()

如果您构造“items”对象并且这两个数组具有不同的长度，那么您将会遇到问题。因此，您需要在构造 Adapter

之前修复 items 对象的构造方式

编辑2:

如果您无法控制数据源，那么您需要:

1. 您需要查看对象契约 (API) 或获取源代码来创建对象契约。拥有一个包含可变长度数组集的对象可能不是提供者想要的，并且您发现了一个错误。

2. 如果您没有 API 或者它指出您应该预期可能出现空值，那么您应该为此做好准备。也许是这样的:

   if (items.getSent() != null && items.getSent(),get(poistion)) { holder.eventCode.setText(items.getSent().get(position).getCodeNumber()); ... }