Recycler Ansicht Adapter verwaltet Liste falsch

Question

Nach dem Löschen von Element aus der Datenbank, ändert Recycler Ansicht Reihenfolge der Daten nach ein oder zwei Mal löschen und Hinzufügen von Daten zur Liste, Löschvorgang zu arbeiten oder die Daten in der Liste ändert sich.

.

Aktivität, die den Blick hat und löscht daraus

String[] items; 
DbHandler db = new DbHandler(getApplicationContext()); 
    items = db.get_item(); 
    db.close(); 
    listRecyclerView = (RecyclerView) findViewById(R.id.main_recycler_view); 

    scheduleAdapter = new ScheduleAdapter(getApplicationContext()); 
    if (listRecyclerView != null) 
     listRecyclerView.setAdapter(scheduleAdapter); 


    listRecyclerView.setLayoutManager(new  WrapContentLinearLayoutManager(getApplicationContext())); 
    listRecyclerView.stopScroll(); 
listRecyclerView.addOnItemTouchListener(new RItemClickListener(getApplicationContext(), listRecyclerView, new RItemClickListener.OnItemClickListener() { 
    @Override 
    public void onItemClick(View view, int position) { 

    } 

    @Override 
    public void onLongItemClick(View view,final int position) { 
     new AlertDialog.Builder(MySchedule.this) 
       .setIcon(android.R.drawable.alert_dark_frame) 
       .setTitle("Are you sure?") 
       .setMessage("Do you want to delete this note?") 
       .setPositiveButton("Yes", new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, int which) { 

         DbHandler db = new DbHandler(getApplicationContext()); 
         db.delete_item(items[1]); 
         db.close(); 

scheduleAdapter.notifyDataSetChanged(); 
        } 
       }) 
       .setNegativeButton("No",null) 
       .show(); 


    } 
})); 


} 
    @Override 
    protected void onResume(){ 
    listRecyclerView.stopScroll(); 
    super.onResume(); 
    scheduleAdapter.notifyDataSetChanged(); 
} 

Meine Adapterklasse

public class ScheduleAdapter extends RecyclerView.Adapter<ScheduleAdapter.ViewHolder> { 

public int Type_Text = 1; 
Context r_context; 
int pos = 1; 

public ScheduleAdapter (Context context){ 
    r_context=context; 
} 

@Override 
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View v; ViewHolder vItem = null; 

    if (viewType==Type_Text){ 
     v= LayoutInflater.from(parent.getContext()).inflate(R.layout.typeview1,parent,false); 
     vItem = new ViewHolder(v,viewType,parent.getContext()); 
    } 

    return vItem; 
} 

@Override 
public void onBindViewHolder(final ViewHolder holder,final int position) { 
    String[] Text_name; 

    holder.setIsRecyclable(false); 
    setAnimation(holder.container); 

    pos = position; 

    if(holder.HolderId==1){ 
     DbHandler db = new DbHandler(r_context); 
     Text_name = db.get_item(); 
     holder.Text.setText(Text_name[position]); 
     db.close(); 
    } 
} 

@Override 
public int getItemCount() { 
    DbHandler db = new DbHandler(r_context); 
    int note_count = db.get_count(); 
    db.close(); 
    return note_count; 
} 

public int getPosition(){ 
    return pos; 
} 

@Override 
public int getItemViewType (int position){ 
    return Type_Text; 
} 

private void setAnimation (View view){ 

    Animation animation = AnimationUtils.loadAnimation(r_context, android.R.anim.slide_in_left); 
    view.startAnimation(animation); 
} 


// ViewHolder Class 
public class ViewHolder extends RecyclerView.ViewHolder { 

    int HolderId; TextView Text; 
    CardView container; 

    public ViewHolder(View itemView, int View_Type, Context context) { 
     super(itemView); 

     container = (CardView) itemView.findViewById(R.id.type1_cardview); 

     if (View_Type==Type_Text){ 
      Text = (TextView) itemView.findViewById(R.id.type1_text); 
      HolderId = 1; 
     } 

Meine Recycler Ansicht klicken Listener-Klasse

public class RItemClickListener implements RecyclerView.OnItemTouchListener { 

private OnItemClickListener mlistener; 

public interface OnItemClickListener { 

    public void onItemClick(View view, int position); 

    public void onLongItemClick(View view, int position); 
} 

GestureDetector mgesturedetector; 

public RItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) { 
    mlistener = listener; 
    mgesturedetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { 
     @Override 
     public boolean onSingleTapUp(MotionEvent e) { 
      return true; 
     } 

     @Override 
     public void onLongPress(MotionEvent e) { 
      View child = recyclerView.findChildViewUnder(e.getX(), e.getY()); 
      if (child != null && mlistener != null) { 
       mlistener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child)); 
      } 
     } 
    }); 

} 

@Override 
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { 
    View childView = rv.findChildViewUnder(e.getX(), e.getY()); 
    if (childView != null && mlistener != null && mgesturedetector.onTouchEvent(e)) { 
     mlistener.onItemClick(childView, rv.getChildAdapterPosition(childView)); 
     return true; 
    } 
    return false; 
} 

@Override 
public void onTouchEvent(RecyclerView rv, MotionEvent e) {} 

@Override 
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { } 
} 

Jemand auf Stack-Überlauf erwähnt, diese Klasse zu implementieren, um den Fehler zu ändern, um diese auch nicht funktioniert hat

public class WrapContentLinearLayoutManager extends LinearLayoutManager { 
public WrapContentLinearLayoutManager(Context context) { 
    super(context); 
} 

//... constructor 
@Override 
     public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) { 
    try { 
     super.onLayoutChildren(recycler, state); 
    } catch (IndexOutOfBoundsException e) { 
     Log.e("Error", "IndexOutOfBoundsException in RecyclerView happens"); 
    } 
} 

Bitte helfen! ...Vielen Dank !

Answer 1

scheduleAdapter.notifyItemRangeChanged(position,items.length); 
         Intent intent = getIntent(); 
         finish(); 
         startActivity(intent); 

Addiert man diese Zeilen nach scheduleAdapter.notifyItemRemoved (Position) gearbeitet :)