リストビューのパフォーマンスを最適化するAndroid

Question

私はlistView（垂直）を持ち、すべてのリストアイテムは水平リストビュー（水平）を持っています。だから、

ので、巨大なパフォーマンスのヒットがある

が、私は垂直リストもgetViewメソッド（）を呼び出している行の水平scrollviewをスクロールするときに問題がある... .. 、することができます任意の1は私にそれへのよりよい解決策を教えて..私は私のこのコード

public View getView(final int position, View convertView, ViewGroup parent) 
    { 
     View v = convertView; 
     ViewHolder holder; 

     if (v == null) 
     { 
      v = inflater.inflate(R.layout.custom_image_layout, null); 
      holder = new ViewHolder(); 
      holder.txtFileName = (TextView) v.findViewById(R.id.txtFileName); 
      holder.imageView = (ImageView) v.findViewById(R.id.imgView); 
      v.setTag(holder); 
     } else 
     { 
      holder = (ViewHolder) v.getTag(); 
     } 
holder.imageView.setImageBitmap(bm); 
holder.txtFileName.setText(""+nameoffile); 
return v; 
    } 
    static class ViewHolder 
    { 
     public ImageView imageView; 
     public TextView txtFileName; 
    } 

使用ザ・ホルを試してみることをお勧め

public class GridViewAdapter extends BaseAdapter { 

    List<List<Hotel>> gridDatasource; 
    Context mContext; 

    public GridViewAdapter(List<List<Hotel>> gridDatasource, Context context) { 
     this.gridDatasource = gridDatasource; 
     this.mContext = context; 
    } 

    public void setGridDatasource(List<List<Hotel>> gridDatasource) { 
     this.gridDatasource = gridDatasource; 
    } 

    @Override 
    public int getCount() { 
     if (gridDatasource == null) { 
      return 0; 
     } 
     return gridDatasource.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return gridDatasource.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     GridViewHolder holder; 
     if (convertView == null) { 
      LayoutInflater inflater = (LayoutInflater) mContext 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = inflater.inflate(R.layout.gridview_table_cell, 
        null); 

      holder = new GridViewHolder(); 
      holder.headerView = (TextView) convertView 
        .findViewById(R.id.gridViewRowHeader); 
      holder.listView = (HorizontalListView) convertView 
        .findViewById(R.id.gridViewHorizontalListView); 
      convertView.setTag(holder); 
     } else { 
      holder = (GridViewHolder) convertView.getTag(); 
      Log.d("TAG", "Reaching Here"); 
     } 
     holder.headerView.setText("Hello From Sandeep"); 
     HorizontalListViewAdapter adapter = new HorizontalListViewAdapter(
       mContext, gridDatasource.get(position)); 
     holder.listView.setAdapter(adapter); 
     return convertView; 
    } 

} 

static class GridViewHolder { 
    TextView headerView; 
    HorizontalListView listView; 
} 

public class HorizontalListViewAdapter extends BaseAdapter { 
    Context mContext; 
    List<Hotel> mHotels; 

    public HorizontalListViewAdapter(Context context, List<Hotel> hotels) { 
     this.mContext = context; 
     this.mHotels = hotels; 
    } 

    @Override 
    public int getCount() { 
     if (mHotels == null) { 
      return 0; 
     } 
     return mHotels.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return mHotels.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     HotelCell cell = (HotelCell) convertView; 
     if (cell == null) { 
      cell = new HotelCell(mContext); 
     } else { 
      Log.d("TAG", "Reached here 2"); 
     } 
     cell.setHotel(mHotels.get(position)); 
     cell.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       Intent intent = new Intent(mContext, 
         HotelDetailActivity.class); 
       intent.putExtra("DATA", ((HotelCell) v).getHotel()); 
       startActivity(intent); 
      } 
     }); 
     cell.setPadding(0, 0, 10, 0); 
     return cell; 
    } 
} 

Answer 1

各位derクラス