Android 使用无止境适配器的ClassCastException_Android_Commonsware Cwac

Android 使用无止境适配器的ClassCastException

android

Android 使用无止境适配器的ClassCastException,android,commonsware-cwac,Android,Commonsware Cwac,我有一个例外我用软呢帽把懒散的人和用公用软件把无尽的人结合起来我犯了这个错误 08-09 18:06:26.553: E/AndroidRuntime(314): FATAL EXCEPTION: main 08-09 18:06:26.553: E/AndroidRuntime(314): java.lang.ClassCastException:com.example.endlesscustom.EndlessSample$CustomArrayAdapter 08-09 18:06:2

我有一个例外我用软呢帽把懒散的人和用公用软件把无尽的人结合起来

我犯了这个错误

08-09 18:06:26.553: E/AndroidRuntime(314): FATAL EXCEPTION: main
08-09 18:06:26.553: E/AndroidRuntime(314): java.lang.ClassCastException:com.example.endlesscustom.EndlessSample$CustomArrayAdapter
08-09 18:06:26.553: E/AndroidRuntime(314):  at com.example.endlesscustom.EndlessSample$DemoAdapter.appendCachedData(EndlessSample.java:174)
08-09 18:06:26.553: E/AndroidRuntime(314):  at com.commonsware.cwac.endless.EndlessAdapter$AppendTask.onPostExecute(EndlessAdapter.java:247)

ArrayAdapter<HashMap<String, String>> arrAdapterNew = ArrayAdapter<HashMap<String,String>>) getWrappedAdapter();

它指出了这一错误

08-09 18:06:26.553: E/AndroidRuntime(314): FATAL EXCEPTION: main
08-09 18:06:26.553: E/AndroidRuntime(314): java.lang.ClassCastException:com.example.endlesscustom.EndlessSample$CustomArrayAdapter
08-09 18:06:26.553: E/AndroidRuntime(314):  at com.example.endlesscustom.EndlessSample$DemoAdapter.appendCachedData(EndlessSample.java:174)
08-09 18:06:26.553: E/AndroidRuntime(314):  at com.commonsware.cwac.endless.EndlessAdapter$AppendTask.onPostExecute(EndlessAdapter.java:247)

ArrayAdapter<HashMap<String, String>> arrAdapterNew = ArrayAdapter<HashMap<String,String>>) getWrappedAdapter();

arrayadapternew=ArrayAdapter）getWrappedAdapter（）；

这是我的密码

public class EndlessSample extends ListActivity {

static int LIST_SIZE;
private int mLastOffset = 0;

static final int BATCH_SIZE = 3;

ArrayList<HashMap<String, String>> countriesSub = new ArrayList<HashMap<String, String>>();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.maina);
    init();
    Log.i("country", String.valueOf(COUNTRIES.length));
    Log.i("mstrings", String.valueOf(mStrings.length));

}

private void init() {
    LIST_SIZE = COUNTRIES.length;
    for (int i = 0; i <= BATCH_SIZE; i++) {
        HashMap<String, String> map = new HashMap<String, String>();
        map.put("country", COUNTRIES[i]);
        map.put("pic", mStrings[i]);
        countriesSub.add(map);
    }
    setLastOffset(BATCH_SIZE);
    displayList(countriesSub);
}

private void setLastOffset(int i) {
    mLastOffset = i;
}

private int getLastOffset() {
    return mLastOffset;
}

private void displayList(ArrayList<HashMap<String, String>> countriesSub2) {
    setListAdapter(new DemoAdapter());
}

private class CustomArrayAdapter extends BaseAdapter {
    public ImageLoader imageLoader;
    private ArrayList<HashMap<String, String>> data;

    public CustomArrayAdapter(Context context, int resource,
            int textViewResourceId,
            ArrayList<HashMap<String, String>> mylist) {
        data = mylist;
        imageLoader = new ImageLoader(context);
    }

    public int getCount() {
        return data.size();
    }

    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder;
        HashMap<String, String> song = new HashMap<String, String>();

        if (convertView == null) {
            LayoutInflater inflater = (LayoutInflater) EndlessSample.this
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.row, null);
            holder = new ViewHolder();
            holder.word = (TextView) convertView
                    .findViewById(R.id.throbber);
            holder.pecture = (ImageView) convertView
                    .findViewById(R.id.imahe);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        Log.i("data size", String.valueOf(data.size()));
        song = data.get(position);
        holder.word.setText(song.get("country"));
        // holder.word.setText(String.valueOf(position + 1) + ". "
        // + countriesSub.get(position));
         imageLoader.DisplayImage(song.get("pic"), holder.pecture);
        return convertView;
    }

    public class ViewHolder {
        public ImageView pecture;
        public TextView word;
    }
}

class DemoAdapter extends EndlessAdapter {
    ArrayList<HashMap<String, String>> tempList = new ArrayList<HashMap<String, String>>();

    DemoAdapter() {
        super(new CustomArrayAdapter(EndlessSample.this,
                android.R.layout.simple_list_item_1, android.R.id.text1,
                countriesSub));

    }

    @Override
    protected View getPendingView(ViewGroup parent) {
        View row = getLayoutInflater().inflate(R.layout.row, null);

        View child = row.findViewById(android.R.id.text1);
        // child.setVisibility(View.GONE);
        child = row.findViewById(R.id.throbber);
        child.setVisibility(View.VISIBLE);

        return (row);
    }

    @Override
    protected boolean cacheInBackground() {
        tempList.clear();
        int lastOffset = getLastOffset();
        if (lastOffset < LIST_SIZE) {
            int limit = lastOffset + BATCH_SIZE;
            for (int i = (lastOffset + 1); (i <= limit && i < LIST_SIZE); i++) {
                HashMap<String, String> map = new HashMap<String, String>();
                map.put("country", COUNTRIES[i]);
                map.put("pic", mStrings[i]);
                tempList.add(map);
            }
            setLastOffset(limit);

            if (limit < LIST_SIZE) {
                return true;
            } else {
                return false;
            }
        } else {
            return false;
        }
    }

    @Override
    protected void appendCachedData() {

        @SuppressWarnings("unchecked")
        ArrayAdapter<HashMap<String, String>> arrAdapterNew = (ArrayAdapter<HashMap<String, String>>) getWrappedAdapter();
        int listLen = tempList.size();
        for (int i = 0; i < listLen; i++) {
            arrAdapterNew.add(tempList.get(i));
        }
    }
}

static final String[] COUNTRIES = new String[] { "Afghanistan", "Albania",
        "Algeria", "American Samoa", "Andorra", "Angola", "Anguilla",
        "Antarctica", "Antigua and Barbuda", "Argentina", "Armenia",
        "Aruba", "Australia", "Austria", "Azerbaijan", "Bahrain",
        "Bangladesh", "Barbados", "Belarus", "Belgium", "Belize", "Benin",
        "Bermuda", "Bhutan", "Bolivia", "Bosnia and Herzegovina",
        "Botswana", "Bouvet Island", "Brazil",
        "British Indian Ocean Territory", "British Virgin Islands",
        "Brunei", "Bulgaria", "Burkina Faso", "Burundi", "Cote d'Ivoire",
        "Cambodia", "Cameroon", "Canada", "Cape Verde", "Cayman Islands",
        "Central African Republic", "Chad", "Chile", "China",
        "Christmas Island", "Cocos (Keeling) Islands", "Colombia",
        "Comoros", "Congo", "Cook Islands", "Costa Rica", "Croatia",
        "Cuba", "Cyprus", "Czech Republic",
        "Democratic Republic of the Congo", "Denmark", "Djibouti",
        "Dominica", "Dominican Republic", "East Timor", "Ecuador", "Egypt",
        "El Salvador", "Equatorial Guinea", "Eritrea", "Estonia",
        "Ethiopia", "Faeroe Islands", "Falkland Islands", "Fiji",
        "Finland", "Former Yugoslav Republic of Macedonia", "France",
        "French Guiana", "French Polynesia", "French Southern Territories",
        "Gabon", "Georgia", "Germany", "Ghana", "Gibraltar", "Greece",
        "Greenland", "Grenada", "Guadeloupe", "Guam", "Guatemala",
        "Guinea", "Guinea-Bissau", "Guyana", "Haiti",
        "Heard Island and McDonald Islands", "Honduras", "Hong Kong",
        "Hungary", "Iceland", "India", "Indonesia", "Iran", "Iraq",
        "Ireland", "Israel", "Italy", "Jamaica" };

private String[] mStrings = {
        "http://a3.twimg.com/profile_images/670625317/aam-logo-v3-twitter.png",
        "http://a3.twimg.com/profile_images/740897825/AndroidCast-350_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid_normal.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf_normal.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook.png",
        "http://a3.twimg.com/profile_images/768060227/ap4u_normal.jpg",
        "http://a1.twimg.com/profile_images/74724754/android_logo_normal.png",
        "http://a3.twimg.com/profile_images/681537837/SmallAvatarx150_normal.png",
        "http://a1.twimg.com/profile_images/63737974/2008-11-06_1637_normal.png",
        "http://a3.twimg.com/profile_images/548410609/icon_8_73.png",
        "http://a1.twimg.com/profile_images/612232882/nexusoneavatar_normal.jpg",
        "http://a1.twimg.com/profile_images/213722080/Bugdroid-phone_normal.png",
        "http://a1.twimg.com/profile_images/645523828/OT_icon_090918_android_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf_normal.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet.png",
        "http://a3.twimg.com/profile_images/670625317/aam-logo-v3-twitter_normal.png",
        "http://a3.twimg.com/profile_images/740897825/AndroidCast-350_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid_normal.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf_normal.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/768060227/ap4u_normal.jpg",
        "http://a1.twimg.com/profile_images/74724754/android_logo.png",
        "http://a3.twimg.com/profile_images/681537837/SmallAvatarx150_normal.png",
        "http://a1.twimg.com/profile_images/63737974/2008-11-06_1637_normal.png",
        "http://a3.twimg.com/profile_images/548410609/icon_8_73_normal.png",
        "http://a1.twimg.com/profile_images/612232882/nexusoneavatar_normal.jpg",
        "http://a1.twimg.com/profile_images/213722080/Bugdroid-phone_normal.png",
        "http://a1.twimg.com/profile_images/645523828/OT_icon_090918_android.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid_normal.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png" };
}

public类endlessample扩展了ListActivity{
静态整数列表大小；
私有int mLastOffset=0；
静态最终整数批次大小=3；
ArrayList CountriesSB=新的ArrayList（）；
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.maina）；
init（）；
Log.i（“国家”，String.valueOf（COUNTRIES.length））；
Log.i（“mstrings”，String.valueOf（mstrings.length））；
}
私有void init（）{
列表大小=COUNTRIES.length；
对于（int i=0；i您放入EndlessAdapter
的适配器是CustomArrayAdapter
，而不是ArrayAdapter
，这就是为什么您在尝试将CustomArrayAdapter
强制转换为ArrayAdapter
作为调用getWrappedAdapter（）的一部分时会得到ClassCastException
所以我只能使用ArrayAdapter？？如何处理这些images@RoBin：您正在使用CustomArrayAdapter
。请始终使用CustomArrayAdapter
，或摆脱CustomArrayAdapter
。您无法将CustomArrayAdapter
神奇地转换为ArrayAdapter
或>ArrayAdapter
或整数
或按钮
。您可以尝试使用thank you@SpK，这也是一个不错的教程