content: package com.example.like.mylibrary;
  
  import android.content.Context;
  import android.graphics.Bitmap;
  import android.graphics.Typeface;
  import android.graphics.drawable.Drawable;
  import android.os.Build;
  import android.text.util.Linkify;
  import android.util.SparseArray;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.View.OnClickListener;
  import android.view.ViewGroup;
  import android.view.animation.AlphaAnimation;
  import android.widget.ImageView;
  import android.widget.ProgressBar;
  import android.widget.RatingBar;
  import android.widget.RelativeLayout;
  import android.widget.TextView;
  
  public class BaseAdapterHelper {
  
      private final SparseArray<View> views;
  
      private View convertView;
      
      private int position;
      
      public BaseAdapterHelper(Context context, ViewGroup parent, int layoutId, 
              int position) {
          this.position = position;
          this.views = new SparseArray<View>();
          this.convertView = LayoutInflater.from(context)
                  .inflate(layoutId, parent, false);
          this.convertView.setTag(this);
      }
      
      public static BaseAdapterHelper get(Context context, View convertView,
              ViewGroup parent, int layoutId) {
          return get(context, convertView, parent, layoutId, -1);
      }
  
      public static BaseAdapterHelper get(Context context, View convertView,
              ViewGroup parent, int layoutId, int position) {
          if (convertView == null) {
              return new BaseAdapterHelper(context, parent, layoutId, position);
          }
          BaseAdapterHelper adapter = (BaseAdapterHelper) convertView.getTag();
          adapter.setPosition(position);
          return adapter;
      }
      
      /**
       * Retrieve the overall position of the data in the list.
       * 
       * @throws IllegalArgumentException
       *             If the position hasn't been set at the construction of the
       *             this helper.
       */
      public int getPosition() {
          if (position == -1)
              throw new IllegalStateException(
                      "Use BaseAdapterHelper constructor "
                              + "with position if you need to retrieve the position.");
          return position;
      }
      
      private void setPosition(int position) {
          this.position = position;
      }
      
      public View getView() {
          return convertView;
      }
      
      public <T extends View> T getView(int viewId) {
          return retrieveView(viewId);
      }
  
      public BaseAdapterHelper setText(int viewId, String value) {
          TextView view = retrieveView(viewId);
          view.setText(value);
          return this;
      }
      
      public BaseAdapterHelper setTextColor(int viewId, int color) {
          TextView view = retrieveView(viewId);
          view.setTextColor(color);
          return this;
      }
      
      public BaseAdapterHelper setTextEnabled(int viewId,Boolean enabled){
          TextView view = retrieveView(viewId);
          view.setEnabled(enabled);
          return this;
      }
      
      public BaseAdapterHelper setTextOnClickListener(int viewId,OnClickListener listener){
          TextView view = retrieveView(viewId);
          view.setOnClickListener(listener);
          return this;
      }
      
      public BaseAdapterHelper setLayoutOnClickListener(int viewId,OnClickListener listener){
          RelativeLayout view = retrieveView(viewId);
          view.setOnClickListener(listener);
          return this;
      }
      
      public BaseAdapterHelper setImageOnClickListener(int viewId,OnClickListener listener){
          ImageView view = retrieveView(viewId);
          view.setOnClickListener(listener);
          return this;
      }
      
      public BaseAdapterHelper setViewBackground(int viewId,int resid){
          View view = retrieveView(viewId);
          view.setBackgroundResource(resid);
          return this;
      }
  
      public BaseAdapterHelper setImageResource(int viewId, int imageResId) {
          ImageView view = retrieveView(viewId);
          view.setImageResource(imageResId);
          return this;
      }
  
      public BaseAdapterHelper setImageDrawable(int viewId, Drawable drawable) {
          ImageView view = retrieveView(viewId);
          view.setImageDrawable(drawable);
          return this;
      }
  
      public BaseAdapterHelper setImageBitmap(int viewId, Bitmap bitmap) {
          ImageView view = retrieveView(viewId);
          view.setImageBitmap(bitmap);
          return this;
      }
  
      public BaseAdapterHelper setAlpha(int viewId, float value) {
          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
              retrieveView(viewId).setAlpha(value);
          } else {
              // Pre-honeycomb hack to set Alpha value
              AlphaAnimation alpha = new AlphaAnimation(value, value);
              alpha.setDuration(0);
              alpha.setFillAfter(true);
              retrieveView(viewId).startAnimation(alpha);
          }
          return this;
      }
  
      public BaseAdapterHelper setVisible(int viewId, boolean visible) {
          View view = retrieveView(viewId);
          view.setVisibility(visible ? View.VISIBLE : View.GONE);
          return this;
      }
  
      public BaseAdapterHelper linkify(int viewId) {
          TextView view = retrieveView(viewId);
          Linkify.addLinks(view, Linkify.ALL);
          return this;
      }
  
      public BaseAdapterHelper setTypeface(int viewId, Typeface typeface) {
          TextView view = retrieveView(viewId);
          view.setTypeface(typeface);
          return this;
      }
  
      public BaseAdapterHelper setTypeface(Typeface typeface, int... viewIds) {
          for (int viewId : viewIds) {
              TextView view = retrieveView(viewId);
              view.setTypeface(typeface);
          }
          return this;
      }
  
      public BaseAdapterHelper setProgress(int viewId, int progress) {
          ProgressBar view = retrieveView(viewId);
          view.setProgress(progress);
          return this;
      }
  
      public BaseAdapterHelper setProgress(int viewId, int progress, int max) {
          ProgressBar view = retrieveView(viewId);
          view.setProgress(progress);
          view.setMax(max);
          return this;
      }
  
      public BaseAdapterHelper setMax(int viewId, int max) {
          ProgressBar view = retrieveView(viewId);
          view.setMax(max);
          return this;
      }
  
      public BaseAdapterHelper setRating(int viewId, float rating) {
          RatingBar view = retrieveView(viewId);
          view.setRating(rating);
          return this;
      }
      
      public BaseAdapterHelper setRating(int viewId, float rating, int max) {
          RatingBar view = retrieveView(viewId);
          view.setRating(rating);
          view.setMax(max);
          return this;
      }
      
      @SuppressWarnings("unchecked")
      private <T extends View> T retrieveView(int viewId) {
          View view = views.get(viewId);
          if (view == null) {
              view = convertView.findViewById(viewId);
              views.put(viewId, view);
          }
          return (T) view;
      }
  }
  