Recycler查看適配器管理列表錯誤

從數據庫中刪除項目後，回收站視圖在刪除數據並將數據添加到列表一次或兩次後更改數據順序，刪除操作停止工作或列表中的數據自行更改。其中有觀點和刪除。Recycler查看適配器管理列表錯誤

活動從它

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(); 
}

我的適配器類

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; 
     }

我的回收站視圖點擊監聽器類

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) { } 
}

有人在堆棧溢出提到實現這個類來更改錯誤，這也沒有工作

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"); 
    } 
}

請幫助！ ...謝謝！

來源

2017-03-31 Yatin Gupta

歡迎的StackOverflow！請閱讀用戶指南，瞭解如何在發佈問題之前提出一個好問題（http://stackoverflow.com/help/how-to-ask）謝謝 –

對不起，在這一整天工作，只是無法弄清楚 –

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

添加這些行後scheduleAdapter.notifyItemRemoved（位置）工作:)

來源

2017-03-31 16:33:14

Recycler查看適配器管理列表錯誤

回答

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