package com.jaydenxiao.common.commonutils;

import android.util.SparseArray;
import android.view.View;

public class ViewHolderUtil {
	// I added a generic return type to reduce the casting noise in client code
	@SuppressWarnings("unchecked")
	public static <T extends View> T get(View view, int id) {
		SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
		if (viewHolder == null) {
			viewHolder = new SparseArray<View>();
			view.setTag(viewHolder);
		}
		View childView = viewHolder.get(id);
		if (childView == null) {
			childView = view.findViewById(id);
			viewHolder.put(id, childView);
		}
		return (T) childView;
	}
	
	

	/*
	 * 在getview里面的用法
	 * 
	 * @Override public View getView(int position, View convertView, ViewGroup
	 * parent) {
	 * 
	 * if (convertView == null) { convertView = LayoutInflater.from(context)
	 * .inflate(R.layout.banana_phone, parent, false); }
	 * 
	 * ImageView bananaView = ViewHolder.get(convertView, R.id.banana); TextView
	 * phoneView = ViewHolder.get(convertView, R.id.phone);
	 * 
	 * BananaPhone bananaPhone = getItem(position);
	 * phoneView.setText(bananaPhone.getPhone());
	 * bananaView.setImageResource(bananaPhone.getBanana());
	 * 
	 * return convertView; }
	 */
	


}