我有一个保存频道的自定义适配器。我使用刷卡刷新来刷新列表成员。但是当我下拉（刷新列表）并立即向上拉到列表时，我给IndexOutOfBoundsException。这是我的适配器：
public class KanalAdapter extends BaseAdapter implements Filterable {
Context context;
String kanaladi;
String veritabani_id;
ArrayList<Kanal> channelbaba;
ArrayList<Kanal> kokchannelbaba;
int OFFICIAL_KANAL = 0;
int NORMAL_KANAL = 1;
LayoutInflater lala;
private DisplayImageOptions options;
Filter kanalfilter = new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint == null || constraint.length() == 0) {
results.values = kokchannelbaba;
results.count = kokchannelbaba.size();
} else {
ArrayList<Kanal> sonuclistesi = new ArrayList<>();
for (Kanal i : kokchannelbaba) {
if (i.getKanaladi().toLowerCase().contains(constraint.toString())) {
sonuclistesi.add(i);
}
}
results.values = sonuclistesi;
results.count = sonuclistesi.size();
}
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results.count == 0) {
notifyDataSetInvalidated();
} else {
channelbaba = (ArrayList<Kanal>) results.values;
notifyDataSetChanged();
}
}
};
public KanalAdapter(Context context, ArrayList<Kanal> channelbaba) {
this.context = context;
this.channelbaba = channelbaba;
kokchannelbaba = channelbaba;
veritabani_id = SharedIdCek();
kanaldakikisisayilari();
lala = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
options = new DisplayImageOptions.Builder()
.showImageOnLoading(R.mipmap.badooooo)
.showImageForEmptyUri(R.mipmap.badooooo)
.showImageOnFail(R.mipmap.badooooo)
.cacheInMemory(true)
.cacheOnDisk(true)
.considerExifParams(true)
.postProcessor(new BitmapProcessor() {
@Override
public Bitmap process(Bitmap bmp) {
return Bitmap.createScaledBitmap(bmp, 970, 260, false);
}
})
.build();
}
private String SharedIdCek() {
SharedPreferences sp = context.getSharedPreferences("kullaniciverileri", Context.MODE_PRIVATE);
String veritabani_id = sp.getString("serverid", "defaultserverid");
return veritabani_id;
}
private void kanaldakikisisayilari() {
for (int i = 0; i < channelbaba.size(); i++) {
ServerKanaldakiKisiSayisi sKKS = new ServerKanaldakiKisiSayisi(i);
sKKS.execute(channelbaba.get(i).getKanaladi());
}
}
public int getCount() {
return (channelbaba.size());
}
public Object getItem(int i) {
return channelbaba.get(i);
}
public long getItemId(int i) {
return i;
}
public int getItemViewType(int position) {
Object item = getItem(position-1);
Kanal kanal = (Kanal) item;
if (kanal.official) {
return OFFICIAL_KANAL;
} else {
return NORMAL_KANAL;
}
}
public int getViewTypeCount() {
return 2;
}
public View getView(final int position, View convertView, ViewGroup viewGroup) {
KanalHolder holder = null;
final int pozisyon = position;
Object currentKanal = getItem(position);
Kanal kanal = (Kanal) currentKanal;
if (convertView == null) {
holder = new KanalHolder();
if (kanal.official) {
convertView = lala.inflate(R.layout.officialkanal, null);
holder.officialgenel = (ImageView) convertView.findViewById(R.id.imageView5);
holder.officialkanaladitext = (TextView) convertView.findViewById(R.id.textView4);
holder.menubutonu = (ImageButton) convertView.findViewById(R.id.button8);
holder.officialkisisayisi = (TextView) convertView.findViewById(R.id.textView26);
holder.officiallikesayisi = (TextView) convertView.findViewById(R.id.textView27);
}
if (!kanal.official) {
convertView = lala.inflate(R.layout.normalkanal, null);
holder.normalgenel = (ImageView) convertView.findViewById(R.id.imageView5);
holder.normalkanaladi = (TextView) convertView.findViewById(R.id.textView4);
holder.normalkisisayisi = (TextView) convertView.findViewById(R.id.textView8);
holder.normallikesayisi = (TextView) convertView.findViewById(R.id.textView28);
}
convertView.setTag(holder);
} else {
holder = (KanalHolder) convertView.getTag();
}
if (kanal.official) {
holder.officialgenel.setBackgroundResource(R.mipmap.cropped);
holder.officialkanaladitext.setText(channelbaba.get(position).getKanaladi());
holder.officiallikesayisi.setText(String.valueOf(channelbaba.get(position).getLikesayisi()));
holder.officialgenel.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
kanaladi = channelbaba.get(position).getKanaladi();
String kanalid = channelbaba.get(position).getId();
int likedurumu = channelbaba.get(position).getLikedurumu();
Log.i("tago", "adapter like durumu" + likedurumu);
KanalaElemanEkle kEE = new KanalaElemanEkle();
kEE.execute(kanaladi);
Intent intent = new Intent(context, GrupSohbeti.class);
intent.putExtra("intentname", "kanaladapter");
intent.putExtra("kanalmodu", "o");
intent.putExtra("kanaladi", kanaladi);
intent.putExtra("kanallikedurumu", likedurumu);
intent.putExtra("kanalid", kanalid);
context.startActivity(intent);
}
});
}
if (!kanal.official) {
Kanal objectt = channelbaba.get(position);
if(holder.normalgenel.getTag()==null ||!holder.normalgenel.getTag().equals(objectt.getKanalurl())){
ImageAware imageAvare = new ImageViewAware(holder.normalgenel,false);
ImageLoader.getInstance().displayImage(channelbaba.get(position).getKanalurl(), imageAvare, options);
holder.normalgenel.setTag(objectt.getKanalurl());
}
holder.normalkisisayisi.setText(channelbaba.get(position).getKisisayisi());
Log.i("tago" , "getview kisisayisi kanaladapterposition" + position + "kisisayisi" + channelbaba.get(position).getKisisayisi());
holder.normalkanaladi.setText(channelbaba.get(position).getKanaladi());
holder.normallikesayisi.setText(String.valueOf(channelbaba.get(position).getLikesayisi()));
holder.normalgenel.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
kanaladi = channelbaba.get(pozisyon).getKanaladi();
String kanalid = channelbaba.get(position).getId();
String kanalurl = channelbaba.get(pozisyon).getKanalurl();
int likedurumu = channelbaba.get(pozisyon).getLikedurumu();
KanalaElemanEkle kEE = new KanalaElemanEkle();
kEE.execute(kanaladi);
Intent intent = new Intent(context, GrupSohbeti.class);
intent.putExtra("intentname", "kanaladapter");
intent.putExtra("kanalmodu", "n");
intent.putExtra("kanaladi", kanaladi);
intent.putExtra("kanalid", kanalid);
intent.putExtra("kanalurl", kanalurl);
intent.putExtra("kanallikedurumu", likedurumu);
context.startActivity(intent);
}
});
}
return convertView;
}
public Filter getFilter() {
if (kanalfilter == null) {
}
return kanalfilter;
}
static class KanalHolder {
public ImageView normalgenel, officialgenel;
public TextView normalkanaladi, officialkanaladitext, normalkisisayisi, normallikesayisi, officialkisisayisi, officiallikesayisi;
public ImageButton menubutonu;
}
这是错误：
java.lang.IndexOutOfBoundsException: Invalid index 4, size is 0
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
at java.util.ArrayList.get(ArrayList.java:308)
at droxoft.armin.com.shappy.KanalAdapter.getItem(KanalAdapter.java:123)
at droxoft.armin.com.shappy.KanalAdapter.getItemViewType(KanalAdapter.java:131)
at com.felipecsl.quickreturn.library.widget.QuickReturnAdapter.getItemViewType(QuickReturnAdapter.java:109)
at android.widget.AbsListView$RecycleBin.getScrapView(AbsListView.java:8228)
at android.widget.AbsListView.obtainView(AbsListView.java:2707)
at android.widget.ListView.makeAndAddView(ListView.java:1811)
at android.widget.ListView.fillDown(ListView.java:697)
at android.widget.ListView.fillGap(ListView.java:661)
at android.widget.AbsListView.trackMotionScroll(AbsListView.java:6686)
at android.widget.AbsListView$FlingRunnable.run(AbsListView.java:5685)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
at android.view.Choreographer.doCallbacks(Choreographer.java:614)
at android.view.Choreographer.doFrame(Choreographer.java:583)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:800)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5602)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
编辑部分：
private class KanallariYenidenCek extends AsyncTask<String, Void, String> {
String charset;
String query;
protected String doInBackground(String... params) {
charset = "utf-8";
String param1 = "id";
try {
query = String.format("param1=%s", URLEncoder.encode(param1, charset));
} catch (IOException e) {
e.printStackTrace();
}
try {
return kanallarigor(params[0]);
} catch (Exception e) {
e.printStackTrace();
return "olmadi";
}
}
private String kanallarigor(String id) {
channelbaba.clear();
HttpURLConnection sconnection = null;
try {
sconnection = (HttpURLConnection) new URL("http://185.22.184.15/shappy//get_official_channels.php?id=" + id).openConnection();
Log.i("tago", "Page Fragment1 official kanalları gor bagı kuruldu");
} catch (IOException e) {
e.printStackTrace();
}
sconnection.setDoOutput(true);
sconnection.setDoInput(true);
sconnection.setRequestProperty("User-Agent", "Mozilla/5.0 ( compatible ) ");
sconnection.setRequestProperty("Accept", "* /*");
sconnection.setRequestProperty("Accept-Charset", charset);
sconnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + charset);
try {
OutputStream output = new BufferedOutputStream(sconnection.getOutputStream());
output.write(query.getBytes(charset));
output.close();
try {
int a = sconnection.getResponseCode();
String b = sconnection.getResponseMessage();
} catch (IOException e) {
e.printStackTrace();
}
BufferedReader in;
if (sconnection.getResponseCode() == 200) {
in = new BufferedReader(new InputStreamReader(sconnection.getInputStream()));
String inputline = in.readLine();
JSONArray jsono = new JSONArray(inputline);
for (int i = 0; i < jsono.length(); i++) {
JSONObject object = jsono.getJSONObject(i);
Kanal kanal = new Kanal(true);
kanal.setKanaladi(object.optString("name"));
kanal.setDate("date");
kanal.setId(object.optString("id"));
kanal.setDistance(object.optString("distance"));
kanal.setLikesayisi(object.optInt("like_count"));
kanal.setLikedurumu(object.optInt("like_status"));
channelbaba.add(kanal);
}
} else {
in = new BufferedReader(new InputStreamReader(sconnection.getErrorStream()));
String inputline = in.readLine();
JSONArray jsono = new JSONArray(inputline);
for (int i = 0; i < jsono.length(); i++) {
JSONObject object = jsono.getJSONObject(i);
Kanal kanal = new Kanal(true);
kanal.setKanaladi(object.optString("name"));
kanal.setDate("date");
kanal.setDistance(object.optString("distance"));
kanal.setId(object.optString("id"));
kanal.setLikedurumu(object.optInt("like_status"));
channelbaba.add(kanal);
}
}
in.close();
Log.i("tago", "Page Fragment yeniden official gor inputline yazd�m");
} catch (IOException e) {
e.printStackTrace();
Log.i("tago", "Page Fragment yeniden official gor yazamad�m");
} catch (JSONException e) {
e.printStackTrace();
Log.i("tago", "json Exception");
}
HttpURLConnection connection = null;
try {
connection = (HttpURLConnection) new URL("http://185.22.184.15/shappy/get_channels.php?id=" + id).openConnection();
Log.i("tago", "Page Fragment1 kanalları yeniden gor bagı kuruldu");
} catch (IOException e) {
e.printStackTrace();
}
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("User-Agent", "Mozilla/5.0 ( compatible ) ");
connection.setRequestProperty("Accept", "* /*");
connection.setRequestProperty("Accept-Charset", charset);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=" + charset);
try {
OutputStream output = new BufferedOutputStream(connection.getOutputStream());
output.write(query.getBytes(charset));
output.close();
try {
int a = connection.getResponseCode();
String b = connection.getResponseMessage();
Log.i("tago", "rerere1" + a + " " + b);
} catch (IOException e) {
e.printStackTrace();
}
BufferedReader in;
if (connection.getResponseCode() == 200) {
in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String inputline = in.readLine();
JSONArray jsono = new JSONArray(inputline);
for (int i = 0; i < jsono.length(); i++) {
JSONObject object = jsono.getJSONObject(i);
Kanal kanal = new Kanal(false);
kanal.setKanaladi(object.optString("name"));
kanal.setKanalurl(object.optString("photo"));
kanal.setDate("date");
kanal.setDistance(object.optString("distance"));
kanal.setLikesayisi(object.optInt("like_count"));
kanal.setId(object.optString("id"));
channelbaba.add(kanal);
}
} else {
in = new BufferedReader(new InputStreamReader(connection.getErrorStream()));
String inputline = in.readLine();
JSONArray jsono = new JSONArray(inputline);
for (int i = 0; i < jsono.length(); i++) {
JSONObject object = jsono.getJSONObject(i);
Kanal kanal = new Kanal(false);
kanal.setKanaladi(object.optString("name"));
kanal.setKanalurl(object.optString("photo"));
kanal.setDate("date");
kanal.setDistance(object.optString("distance"));
kanal.setLikesayisi(object.optInt("like_count"));
kanal.setId(object.optString("id"));
channelbaba.add(kanal);
}
}
in.close();
Log.i("tago", "Page Fragment yeniden kanalları gor inputline yazd�m");
} catch (IOException e) {
e.printStackTrace();
Log.i("tago", "Page Fragment yeniden kanalları gor yazamad�m");
} catch (JSONException e) {
e.printStackTrace();
Log.i("tago", "json Exception");
}
return "inputline";
}
protected void onPostExecute(String s) {
kanalAdapter = new KanalAdapter(getActivity(), channelbaba);
if (viewGroup instanceof AbsListView) {
int numColumns = (viewGroup instanceof GridView) ? 3 : 1;
absListView.setAdapter(new QuickReturnAdapter(kanalAdapter, numColumns));
}
QuickReturnAttacher quickReturnAttacher = QuickReturnAttacher.forView(viewGroup);
quickReturnAttacher.addTargetView(bottomTextView, AbsListViewScrollTarget.POSITION_BOTTOM);
topTargetView = quickReturnAttacher.addTargetView(quickReturnBar,
AbsListViewScrollTarget.POSITION_BOTTOM,
dpToPx(getActivity(), 50));
if (quickReturnAttacher instanceof AbsListViewQuickReturnAttacher) {
AbsListViewQuickReturnAttacher
attacher =
(AbsListViewQuickReturnAttacher) quickReturnAttacher;
attacher.addOnScrollListener(PageFragment1.this);
attacher.setOnItemClickListener(PageFragment1.this);
attacher.setOnItemLongClickListener(PageFragment1.this);
}
}