刷新从适配器onclick recyclerview

我有一个Recycler视图，显示从数据库中的笔记，我有一个onclick方法内的适配器，所以我可以点击每个元素调出一个对话框编辑/删除/一旦完成，我的问题是，一旦它执行了操作，因为它在适配器中，我如何让它刷新活动的回收站视图？刷新从适配器onclick recyclerview

适配器类

public class NoteDataAdapter extends RecyclerView.Adapter<NoteDataAdapter.RecyclerViewHolder> { 


    ArrayList<NoteDataProvider> arrayList = new ArrayList<>(); 
    NoteDataAdapter(ArrayList<NoteDataProvider> arrayList) 
    { 
     this.arrayList = arrayList; 
    } 
    public static String doner; 

    @Override 
    public RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 

     View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_assignment_note_layout,parent, false); 
     RecyclerViewHolder recyclerViewHolder = new RecyclerViewHolder(view); 
     return recyclerViewHolder; 
    } 

    @Override 
    public void onBindViewHolder(RecyclerViewHolder holder, int position) { 


     NoteDataProvider noteDataProvider = arrayList.get(position); 
     holder.id.setText(noteDataProvider.getId()); 
     holder.note.setText(noteDataProvider.getContent()); 
     holder.done.setText(noteDataProvider.getDone()); 
     String doneee = holder.done.getText().toString(); 
     final String yes = "Yes"; 
     doner = holder.done.getText().toString(); 

     if (doneee.equals("Yes")) 

     { 
      holder.note.setPaintFlags(holder.note.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG); 
     } 
     else { 
      // nothing 
     } 

    } 

    @Override 
    public int getItemCount() { 
     return arrayList.size(); 
    } 

    public static class RecyclerViewHolder extends RecyclerView.ViewHolder{ 

     TextView id, note, done; 

     public NoteDataProvider item; 

     RecyclerViewHolder(View view){ 
      super(view); 
      id = (TextView)view.findViewById(R.id.note_id); 
      note = (TextView)view.findViewById(R.id.note_content); 
      done = (TextView)view.findViewById(R.id.note_done); 

      view.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(final View v) { 

        Toast.makeText(v.getContext(), "os version is: " + done.getText().toString()+ " " + doner , Toast.LENGTH_SHORT).show(); 
        DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() { 
         @Override 
         public void onClick(DialogInterface dialog, int which) { 
          switch (which){ 
           case DialogInterface.BUTTON_POSITIVE: 
            UserDbHelper userDbHelper; 
            SQLiteDatabase sqLiteDatabase; 
            userDbHelper = new UserDbHelper(v.getContext()); 
            sqLiteDatabase = userDbHelper.getReadableDatabase(); 
            userDbHelper.updateNote(id.getText().toString(), "Yes", sqLiteDatabase); 

            break; 

           case DialogInterface.BUTTON_NEGATIVE: 
            //Edit 
            break; 
           case DialogInterface.BUTTON_NEUTRAL: 
            //Delete 
            userDbHelper = new UserDbHelper(v.getContext()); 
            sqLiteDatabase = userDbHelper.getReadableDatabase(); 
            userDbHelper.deleteAssignmentNote(id.getText().toString(), sqLiteDatabase); 
            break; 
          } 
         } 
        }; 


        AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(v.getContext(), R.style.myDialog)); 
        builder.setMessage("What would you like to do?").setPositiveButton("Mark as done", dialogClickListener) 
          .setNegativeButton("Edit", dialogClickListener).setNeutralButton("Delete",dialogClickListener).show(); 
       } 
      }); 



     } 
    } 
}

Activity类recyclerview片断

recyclerView = (RecyclerView)findViewById(R.id.assignment_notes_recyclerview); 
     layoutManager = new LinearLayoutManager(this); 
     recyclerView.setLayoutManager(layoutManager); 
     recyclerView.setHasFixedSize(true); 
     adapter = new NoteDataAdapter(arrayList); 
     recyclerView.setAdapter(adapter); 
     UserDbHelper userDbHelper = new UserDbHelper(this); 
     SQLiteDatabase sqLiteDatabase = userDbHelper.getReadableDatabase(); 

     Cursor cursor = userDbHelper.getAssignmentNotes(selected, sqLiteDatabase); 

     cursor.moveToFirst(); 
     do { 
      NoteDataProvider noteDataProvider = new NoteDataProvider(cursor.getString(0), cursor.getString(2), cursor.getString(3)); 
      arrayList.add(noteDataProvider); 
     }while(cursor.moveToNext()); 
     userDbHelper.close();

来源

2016-09-04 user6548194

使用notifydatasetchanged或notifyItemInserted，.... –

您可以拨打notifyItemInserted /删除/从适配器改为告诉RecyclerView究竟是什么改变了。有关更多详细信息，请参阅https://developer.android.com/reference/android/support/v7/widget/RecyclerView.Adapter.html。

来源

2016-09-04 11:07:29

让您的适配器【摘要类：

public abstrcat class NoteDataAdapter extends...

，并添加到类的抽象方法，如：

public abstract void delete(); 
public abstract void edit();

调用这些方法时，单击按钮

，并实现它们的活动

来源

2016-09-04 11:17:00 user6778400

刷新从适配器onclick recyclerview

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