android – ViewHolder ArrayIndexOutOfBoundsException：length = 2;索引= 2

概述我尝试使用两种类型的视图和两种类型的ViewHolrdes,但收到错误： java.lang.ArrayIndexOutOfBoundsException: length=2; index=2 at android.widget.AbsListView$RecycleBin.addScrapView(AbsListView.java:6705) at android 我尝试使用两种类型的视图和两种类型的VIEwHolrdes,但收到错误：

java.lang.Arrayindexoutofboundsexception: length=2; index=2        at androID.Widget.AbsListVIEw$RecycleBin.addScrapVIEw(AbsListVIEw.java:6705)        at androID.Widget.AbsListVIEw.trackMotionScroll(AbsListVIEw.java:5210)        at androID.Widget.AbsListVIEw$FlingRunnable.run(AbsListVIEw.java:4368)        at androID.vIEw.Choreographer$CallbackRecord.run(Choreographer.java:776)        at androID.vIEw.Choreographer.doCallbacks(Choreographer.java:579)        at androID.vIEw.Choreographer.doFrame(Choreographer.java:547)        at androID.vIEw.Choreographer$FramedisplayEventReceiver.run(Choreographer.java:762)        at androID.os.Handler.handleCallback(Handler.java:800)        at androID.os.Handler.dispatchMessage(Handler.java:100)        at androID.os.Looper.loop(Looper.java:194)        at androID.app.ActivityThread.main(ActivityThread.java:5371)        at java.lang.reflect.Method.invokeNative(Native Method)        at java.lang.reflect.Method.invoke(Method.java:525)        at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)        at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:600)        at dalvik.system.NativeStart.main(Native Method)

这是我的适配器：

public class FrIEndslistadapterFromKesh extends ArrayAdapter<FrIEndListEntryItem> {    List<FrIEndListEntryItem> frIEnds;    List<FrIEndListEntryItem> frIEndsWithoutPoints;    Context context;    private LayoutInflater inflater;    private LayoutInflater mLayoutInflater;    private static String ROOT_DIRECTORY_PATH = Environment.getExternalStorageDirectory() + file.separator + ".SleepKeeker/Photos old";    FrIEndsTab frIEndsTab;    public FrIEndslistadapterFromKesh(Context context,final List<FrIEndListEntryItem> frIEnds,final List<FrIEndListEntryItem> frIEndsWithoutPoints) {        super(context,0);        this.context = context;        inflater = LayoutInflater.from(context);        this.frIEndsWithoutPoints = frIEndsWithoutPoints;        this.frIEnds = frIEnds;        frIEndsTab = new FrIEndsTab();        mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    }    public voID updateList(List<FrIEndListEntryItem> newList1,List<FrIEndListEntryItem> newList2) {        frIEnds.clear();        frIEnds.addAll(newList1);        frIEndsWithoutPoints.clear();        frIEndsWithoutPoints.addAll(newList2);        this.notifyDataSetChanged();    }    public List<FrIEndListEntryItem> getFrIEnds() {        return frIEnds;    }    @OverrIDe    public int getCount() {        return frIEnds.size() + frIEndsWithoutPoints.size();    }    public String getIDSocTypename(int position) {        if (frIEnds == null || position + 1 >= frIEnds.size()) {            return "";        }        FrIEndListEntryItem ei = frIEnds.get(position - 1);        return ei.userID + "," + ei.socType + "," + ei.name;    }    static class VIEwHolder1 {        public ImageVIEw image = null;        public TextVIEw Title = null;        public TextVIEw subTitle = null;    }    static class VIEwHolder2 {        public ImageVIEw image;        public TextVIEw Title;        public Typefacedbutton button;    }    @OverrIDe    public int getItemVIEwType(int pos) {        if (pos < frIEnds.size())            return 1;        return 2;    }    //@TargetAPI(Build.VERSION_CODES.JELLY_BEAN)    @OverrIDe    public VIEw getVIEw(int position,VIEw convertVIEw,VIEwGroup parent) {        int vIEwType = getItemVIEwType(position);        VIEwHolder1 vIEwHolder1 = null;        VIEwHolder2 vIEwHolder2 = null;        if (convertVIEw == null) {            if (vIEwType == 1) {                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);                convertVIEw = inflater.inflate(R.layout.List_frnds_item_with_points,parent,false);                vIEwHolder1 = new VIEwHolder1();                vIEwHolder1.Title = (TextVIEw) convertVIEw.findVIEwByID(R.ID.List_item_Title_frIEnd);                vIEwHolder1.image = (ImageVIEw) convertVIEw.findVIEwByID(R.ID.imageFrIEndAva);                vIEwHolder1.subTitle = (TextVIEw) convertVIEw.findVIEwByID(R.ID.List_item_frIEnd_woke_time);                convertVIEw.setTag(vIEwHolder1);            } else {                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);                convertVIEw = inflater.inflate(R.layout.List_frnds_item_without_points,false);                vIEwHolder2 = new VIEwHolder2();                vIEwHolder2.Title = (TextVIEw) convertVIEw.findVIEwByID(R.ID.List_item_Title_frIEnd);                vIEwHolder2.image = (ImageVIEw) convertVIEw.findVIEwByID(R.ID.imageFrIEndAva);                vIEwHolder2.button = (Typefacedbutton) convertVIEw.findVIEwByID(R.ID.invitebutton);                vIEwHolder2.button.setClickListner();                convertVIEw.setTag(vIEwHolder2);            }        } else {            if (vIEwType == 1) {                vIEwHolder1 = (VIEwHolder1) convertVIEw.getTag();            } else {                vIEwHolder2 = (VIEwHolder2) convertVIEw.getTag();            }        }        if (vIEwType == 1) {             final FrIEndListEntryItem ei = frIEnds.get(position);             vIEwHolder1.Title.setText(ei.name);             vIEwHolder1.subTitle.setText(ei.wokeTime);             file picture = findPicture(ei.name);             if (picture != null && picture.exists()) {                    Picasso.with(context).load("file://" + picture.getabsolutePath()).fit().centerCrop().into(vIEwHolder1.image);             }        } else {                final FrIEndListEntryItem ei2 = frIEndsWithoutPoints.get(position - frIEnds.size());                vIEwHolder2.Title.setText(ei2.name);                vIEwHolder2.button.setFrIEndItem(ei2);                file picture = findPicture(ei2.name);                if (picture != null && picture.exists()) {                    Picasso.with(context).load("file://" + picture.getabsolutePath()).fit().centerCrop().into(vIEwHolder2.image);                }         }      return convertVIEw;    }    @OverrIDe    public int getVIEwTypeCount() {        return 2;    }    private file findPicture(String name) {        file root = new file(ROOT_DIRECTORY_PATH);        if (root!= null)        {            file[] files = root.Listfiles();            if (files == null)                return null;            for (int i = 0; i<files.length; i++) {                Log.d("qedsds","" + files[i].getname());                if (files[i].getname().contains(name))                    return files[i];            }        }        return null;    }}

滚动列表时出现错误.但我不明白为什么.
我花了很多时间来解决这个问题,但无济于事

解决方法 更换

@OverrIDepublic int getItemVIEwType(int pos) {    if (pos < frIEnds.size())        return 1;    return 2;}

通过

@OverrIDepublic int getItemVIEwType(int pos) {    if (pos < frIEnds.size())        return 0;    return 1;}

从the Adapter documentation for the method getItemViewType(我的重点)：

Returns

An integer representing the type of VIEw. Two vIEws should share the same type if one can be converted to the other in getVIEw(int,VIEw,VIEwGroup). Note: Integers must be in the range 0 to getVIEwTypeCount() – 1. IGnorE_ITEM_VIEW_TYPE can also be returned.

此时,您将返回视图类型的值1和2.您需要返回值0和1,以满足粗体条件.

总结

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