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私はrecyclerview内のjson配列からデータを削除しようとしています。私はserver.Butから同じデータを削除することができます私のrecyclerviewに反映されていません。アクティビティをリロードするときに反映されます。RecyclerviewのJson Arrayからデータを削除
これは私のアダプタページ
public class RecyclerAdapterMyLink extends
RecyclerView.Adapter<RecyclerAdapterMyLink.ViewHolder> {
List<RecyclerMyLinkModel> mLinks;
private Context context;
private static final String DELETEMYLINK_URL = Config.GET_URL+"deletemylink.php";
public RecyclerAdapterMyLink(List<RecyclerMyLinkModel> mLinks, Context context){
super();
this.mLinks = mLinks;
this.context = context;
}
@Override
public RecyclerAdapterMyLink.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
View contactView = inflater.inflate(R.layout.rsmylink_activicty, parent, false);
ViewHolder viewHolder = new ViewHolder(contactView);
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
RecyclerMyLinkModel myLinkModel = mLinks.get(position);
holder.txtLinkTitle.setText(myLinkModel.getCaption());
holder.txtLinkTitle.setTag(myLinkModel.getLink());
holder.remove_mylinks.setTag(myLinkModel.getLid());
holder.remove_mylinks.setOnClickListener(clickListener);
holder.remove_mylinks.setTag(holder);
}
View.OnClickListener clickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
ViewHolder holder = (ViewHolder) view.getTag();
int position = holder.getPosition();
AlertDialog diaBox = AskOption(position);
diaBox.show();
}
};
private AlertDialog AskOption(Integer pos)
{
final Integer post=pos;
AlertDialog myQuittingDialogBox =new AlertDialog.Builder(context)
//set message, title, and icon
.setTitle("Delete")
.setMessage("Do you want to Delete")
.setIcon(R.drawable.heartred)
.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
RecyclerMyLinkModel feedItem = mLinks.get(post);
Integer lid=feedItem.getLid();
RemoveMyLInk(lid);//Deleted from server
mLinks.remove(post);
notifyItemRemoved(post);;
notifyItemRangeChanged(post, mLinks.size());
dialog.dismiss();
}
})
.setNegativeButton("cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
})
.create();
return myQuittingDialogBox;
}
@Override
public int getItemCount() {
return mLinks.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public ImageView remove_mylinks;
public TextView txtLinkTitle;
public ViewHolder(View itemView) {
super(itemView);
remove_mylinks = (ImageView) itemView.findViewById(R.id.remove_mylinks);
txtLinkTitle = (TextView) itemView.findViewById(R.id.txtLinkTitle);
}
}
private void RemoveMyLInk(Integer lkid)
{
class RemoveMyLinkUser extends AsyncTask<Integer, Void, String>
{
@Override
protected String doInBackground(Integer... params) {
Integer myNum = params[0];
try {
URL url = new URL(DELETEMYLINK_URL); // here is your URL path
JSONObject postDataParams = new JSONObject();
postDataParams.put("l_id", myNum);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getPostDataString(postDataParams));
writer.flush();
writer.close();
os.close();
int responseCode=conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
BufferedReader in=new BufferedReader(new
InputStreamReader(
conn.getInputStream()));
StringBuffer sb = new StringBuffer("");
String line="";
while((line = in.readLine()) != null) {
sb.append(line);
break;
}
in.close();
return sb.toString();
}
else {
return new String("false : "+responseCode);
}
}
catch(Exception e){
return new String("Exception: " + e.getMessage());
}
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
if ("Some Problem Occurs Try Again".equals(s))
{
Toast.makeText(context,s,Toast.LENGTH_LONG).show();
}
else if("Successfully Deleted".equals(s))
{
Toast.makeText(context,s,Toast.LENGTH_LONG).show();
}
}
}
RemoveMyLinkUser ch = new RemoveMyLinkUser();
ch.execute(lkid);
}
public String getPostDataString(JSONObject params) throws Exception {
StringBuilder result = new StringBuilder();
boolean first = true;
Iterator<String> itr = params.keys();
while(itr.hasNext()){
String key= itr.next();
Object value = params.get(key);
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(key, "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(value.toString(), "UTF-8"));
}
return result.toString();
}
}
である。これは、整数はint型されていない情報については、整数オブジェクトである私のRecyclerviewレイアウト
わからないとの情報のためですが、このラインnotifyItemRangeChanged（ポスト、mLinksを必要はありません。サイズ（））; notifyItemRemovedがそれを処理します。 – Ben
@Benコードを削除します。同じ結果 –
[あなたはjavaの基本を知らない：整数は整数ではなく、整数はオブジェクトです...]（http://ideone.com/1dX3tD） – Selvin