爲什麼我的刪除按鈕在RecyclerView中不起作用？

Question

我遇到了實施刪除按鈕的問題。它應該從RecyclerView中刪除一個項目，如果你點擊它。我的佈局文件包含兩個TextViews和ImageButton的，像這樣：

<TextView 
    android:id="@+id/layout_list_name" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentStart="true" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:textStyle="bold" 
    android:textAppearance="?android:attr/textAppearanceLarge" /> 

<TextView 
    android:id="@+id/layout_list_date" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignStart="@+id/layout_list_name" 
    android:layout_alignLeft="@+id/layout_list_name" 
    android:layout_below="@+id/layout_list_name" /> 

<ImageButton 
    android:id="@+id/layout_list_delete" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:layout_alignParentRight="true" 
    android:layout_alignParentEnd="true" 
    android:contentDescription="@string/layout_list_delete" /> 

這是管理的RecyclerView的項目和功能，我的適配器類：

List<RecyclerViewListSchema> list; 

public RecyclerViewListAdapter(List<RecyclerViewListSchema> list) { 
    this.list = list; 
} 

public static class RecyclerViewViewHolder extends RecyclerView.ViewHolder { 
    TextView name; 
    TextView date; 
    ImageButton delete; 

    public RecyclerViewViewHolder(View view) { 
     super(view); 

     name = (TextView) view.findViewById(R.id.layout_list_name); 
     date = (TextView) view.findViewById(R.id.layout_list_date); 
     delete = (ImageButton) view.findViewById(R.id.layout_list_delete); 
    } 
} 

@Override 
public RecyclerViewViewHolder onCreateViewHolder(ViewGroup viewGroup, int position) { 
    View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_list, viewGroup, false); 
    RecyclerViewViewHolder viewHolder = new RecyclerViewViewHolder(view); 

    return viewHolder; 
} 

@Override 
public void onBindViewHolder(RecyclerViewViewHolder viewHolder, final int position) { 
    viewHolder.name.setText(list.get(position).name); 
    viewHolder.date.setText(list.get(position).date); 
    viewHolder.delete.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      RecyclerViewListSchema item = list.get(position); 
      list.remove(position); 
      notifyItemRemoved(position); 
     } 
    }); 
} 

@Override 
public void onAttachedToRecyclerView(RecyclerView recyclerView) { 
    super.onAttachedToRecyclerView(recyclerView); 
} 

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

更新： 這是確切的位置在我的刪除功能的工作原理刪除項目：

@Override 
public void onBindViewHolder(RecyclerViewViewHolder viewHolder, final int position) { 
viewHolder.name.setText(list.get(position).name); 
viewHolder.date.setText(list.get(position).date); 
viewHolder.delete.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View view) { 
     RecyclerViewListSchema item = list.get(position); 
     list.remove(position); 
     notifyItemRemoved(position); 
    } 
}); 
} 

我RecyclerView填充一個從SQLite數據庫中選擇它旁邊的按鈕。我嘗試點擊它，但它沒有做任何事情。我的代碼中發生了什麼？我做錯了什麼？有關如何解決此問題的任何建議？

Answer 1

刪除時可以依賴位置。代之以做。

@Override 
public void onBindViewHolder(RecyclerViewViewHolder viewHolder, int position) { 
    final RecyclerViewListSchema item = list.get(position); 
    viewHolder.name.setText(item.name); 
    viewHolder.date.setText(item.date); 
    viewHolder.delete.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      int pos = list.indexOf(item); 
      list.remove(pos); 
      notifyItemRemoved(pos); 
     } 
    }); 
} 

Answer 2

更改您的onClick看起來像這樣：

public void onClick(View view) { 
    RecyclerViewListSchema item = list.get(position); 
    list.remove(position); 
    notifyItemRemoved(position); 
    notifyItemRangeChanged(position, getItemCount()); 
}