RecyclerView：給出錯誤的位置的onClick自定義行

Question

所需的結果

保持滾動位置，並就自定義行的特定視圖右側位置的特定視圖。

我正在使用RecyclerView，其中我試圖在列表的開頭以及列表的末尾添加Demand Data。

通過滾動底部獲取數據是完美的。

但有問題如下滾動頂部：在適配器的onBindViewHolder

1. 集點擊收聽。
2. 設置Recyclerview的OnItemTouchListener中的單擊偵聽器。

這裏的例子：當我向上滾動列表

，然後它加載15個數據，並把它添加到列表的頂部。 我們的目標是保持滾動位置。 可通過

adapter.notifyItemRangeInserted(0, stringArrayListTemp.size()); 

實現但問題是當我在任何項目上點擊無需滾動查看，然後的OnClickListener給錯誤的位置。 您可以檢查適配器的方法：

@Override 
    public void onBindViewHolder(MyViewHolder holder, final int position) { 
     String item = moviesList.get(position); 
     holder.title.setText(item); 
     holder.title.setTag(position); 
     holder.title.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Log.e("onClick", "stringArrayList position: " + moviesList.get(position) + " - view position: " + moviesList.get((int) view.getTag())); 
      } 
     }); 
    } 

但在Recyclerview的addOnItemTouchListener同時採用getTag給出正確的位置stringArrayList.get(position)但給錯了位置。

mRecyclerView.addOnItemTouchListener(
       new RecyclerItemClickListener(this, new RecyclerItemClickListener.OnItemClickListener() { 
      @Override 
      public void onItemClick(View view, int position) { 
       Log.e("onItemClick", "stringArrayList position: "+stringArrayList.get(position)+ " - view position: "+stringArrayList.get((int)view.getTag())); 
      } 
     })); 

當我嘗試通過以下方法在列表開始處添加數據時，我得到了確切的問題。

// retain scroll position and gives wrong position onClick 
    adapter.notifyItemRangeInserted(0, stringArrayListTemp.size()); 

// does not retain scroll position, scroll to top & gives right position onClick 
    //adapter.notifyDataSetChanged(); 

Answer 1

這對我的代碼工作，所以嘗試一些東西像

public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener { 
      private final Typeface font; 
      public TextView mTitle, mDetail, mDate, mCategory; 
      public CheckBox mCheckBox; 
      public ImageButton mImageButton; 
      public ImageView mImage; 
      public View mview; 
      private SparseBooleanArray selectedItems = new SparseBooleanArray(); 

      public MyViewHolder(View view) { 
       super(view); 
       mTitle = (TextView) view.findViewById(R.id.item_title); 
       mDetail = (TextView) view.findViewById(R.id.item_detail); 
       mImage = (ImageView) view.findViewById(R.id.item_thumbnail); 
       mDate = (TextView) view.findViewById(R.id.date); 
       mCategory = (TextView) view.findViewById(R.id.category); 
       mCheckBox = (CheckBox) view.findViewById(R.id.checkbox); 
       mImageButton = (ImageButton) view.findViewById(R.id.imageButton); 
       mview = view; 


view.setOnClickListener(this); 
      view.setOnLongClickListener(this); 

     } 

     @Override 
     public void onClick(View v) { 
      CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder(); 
      CustomTabsIntent customTabsIntent = builder.build(); 
      customTabsIntent.launchUrl(MainActivity.activity, Uri.parse(mDataSet.get(getAdapterPosition()).getPostLink())); 
     } 

我如何保持recyclerview位置

public void setRecyclerViewLayoutManager(LayoutManagerType layoutManagerType) { 
    int scrollPosition = 0; 

    if (mRecyclerView.getLayoutManager() != null) { 
     scrollPosition = ((LinearLayoutManager) mRecyclerView.getLayoutManager()) 
       .findFirstCompletelyVisibleItemPosition(); 
    } 

    switch (layoutManagerType) { 
     case GRID_LAYOUT_MANAGER: 
      mLayoutManager = new GridLayoutManager(getActivity(), SPAN_COUNT); 
      mCurrentLayoutManagerType = LayoutManagerType.GRID_LAYOUT_MANAGER; 
      break; 
     case LINEAR_LAYOUT_MANAGER: 
      mLayoutManager = new LinearLayoutManager(getActivity()); 
      mCurrentLayoutManagerType = LayoutManagerType.LINEAR_LAYOUT_MANAGER; 
      break; 
     default: 
      mLayoutManager = new LinearLayoutManager(getActivity()); 
      mCurrentLayoutManagerType = LayoutManagerType.LINEAR_LAYOUT_MANAGER; 
    } 

    mRecyclerView.setLayoutManager(mLayoutManager); 
    mRecyclerView.scrollToPosition(scrollPosition); 
}