content: package com.common.comm;
  
  import android.content.Context;
  import android.graphics.Bitmap;
  import android.util.SparseArray;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.ImageView;
  import android.widget.TextView;
  
  /**
   * author miekoz on 2016/3/17.
   * email  meikoz@126.com
   */
  public class ViewHolder {
      private final SparseArray<View> mViews;
      private int mPosition;
      private View mConvertView;
  
      private ViewHolder(Context context, ViewGroup parent, int layoutId,
                         int position) {
          this.mPosition = position;
          this.mViews = new SparseArray<View>();
          mConvertView = LayoutInflater.from(context).inflate(layoutId, parent,
                  false);
          // setTag
          mConvertView.setTag(this);
      }
  
      /**
       * 拿到一个ViewHolder对象
       *
       * @param context
       * @param convertView
       * @param parent
       * @param layoutId
       * @param position
       * @return
       */
      public static ViewHolder get(Context context, View convertView,
                                   ViewGroup parent, int layoutId, int position) {
          if (convertView == null) {
              return new ViewHolder(context, parent, layoutId, position);
          }
          return (ViewHolder) convertView.getTag();
      }
  
      public View getConvertView() {
          return mConvertView;
      }
  
      /**
       * 通过控件的Id获取对于的控件，如果没有则加入views
       *
       * @param viewId
       * @return
       */
      public <T extends View> T getView(int viewId) {
          View view = mViews.get(viewId);
          if (view == null) {
              view = mConvertView.findViewById(viewId);
              mViews.put(viewId, view);
          }
          return (T) view;
      }
  
      /**
       * 为TextView设置字符串
       *
       * @param viewId
       * @param text
       * @return
       */
      public ViewHolder setText(int viewId, String text) {
          TextView view = getView(viewId);
          view.setText(text);
          return this;
      }
  
      /**
       * 为ImageView设置图片
       *
       * @param viewId
       * @param drawableId
       * @return
       */
      public ViewHolder setImageResource(int viewId, int drawableId) {
          ImageView view = getView(viewId);
          view.setImageResource(drawableId);
  
          return this;
      }
  
      /**
       * 为ImageView设置图片
       *
       * @param viewId
       * @param
       * @return
       */
      public ViewHolder setImageBitmap(int viewId, Bitmap bm) {
          ImageView view = getView(viewId);
          view.setImageBitmap(bm);
          return this;
      }
  
      public int getPosition() {
          return mPosition;
      }
  
  }
  