SaViewHolder.java

package com.martin.simpledevelop.adapter;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.NetworkImageView;
import com.android.volley.toolbox.Volley;
import com.martin.simpledevelop.utils.cache.BitmapCache;
import com.martin.simpledevelop.utils.log.SaLogUtils;

/**
 * @Description 结合SaBaseAdapter一起使用, ListView万能适配器
 * @File SaViewHolder.java
 * @Package com.martin.view.adapter
 * @Date 2015年6月23日下午9:03:47
 * @Author Donghongyu 1358506549@qq.com
 * @Version v1.0.0
 */
public class SaViewHolder {
    //
    private SparseArray<View> mViews;

    //
    private int mPostion;

    //
    private View mConvertView;

    //基于Volley的图片加载
    private ImageLoader mImageLoader;


    public SaViewHolder(Context context, ViewGroup parent, int layoutId,
                        int position) {
        this.mPostion = position;
        this.mViews = new SparseArray<View>();
        // 填充条目布局为布局对象
        this.mConvertView = LayoutInflater.from(context).inflate(layoutId,
                parent, false);
        this.mConvertView.setTag(this);
        RequestQueue mQueue = Volley.newRequestQueue(context);
        mImageLoader = new ImageLoader(mQueue, new BitmapCache(context));
    }

    /**
     * 根据传入的参数返回一个ViewHolder
     *
     * @param context     上下文
     * @param convertView 要转换的控件
     * @param parent      父控件
     * @param layoutId    要填充的布局id
     * @param position    位置信息
     * @return
     */
    public static SaViewHolder get(Context context, View convertView,
                                   ViewGroup parent, int layoutId, int position) {
        // 如果传入的转换convertView为null,创建一个新的Viewholder返回使用
        if (convertView == null) {
            SaLogUtils.e("SaViewHolder", "getView>>>");
            return new SaViewHolder(context, parent, layoutId, position);
        }
        // 如果不为null,那么直接从tag中取出并返回,节省时间
        else {
            SaViewHolder saViewHolder = (SaViewHolder) convertView.getTag();
            // 需要更新ViewHolder对应的位置信息
            saViewHolder.mPostion = position;
            return saViewHolder;
        }
    }

    /**
     * 跟据指定的id进行view组件的获取,获取后保存到mViews中方便下次使用的时快速得到;
     *
     * @param viewId 控件id
     * @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;
    }

    public View getConvertView() {
        return mConvertView;
    }

    /**
     * 给TextView设置值,并采用链式编程将当前ViewHolder返回
     *
     * @param viewId
     * @param text
     * @return
     */
    public SaViewHolder setText(int viewId, String text) {
        TextView tv = getView(viewId);
        tv.setText(text);
        return this;
    }

    /**
     * 给View设置显示与隐藏,并采用链式编程将当前ViewHolder返回
     *
     * @param viewId
     * @param isVisable
     * @return
     */
    public SaViewHolder setVisable(int viewId, boolean isVisable) {
        View view = getView(viewId);
        if (isVisable) {
            view.setVisibility(View.VISIBLE);
        } else {
            view.setVisibility(View.INVISIBLE);
        }
        return this;
    }

    /**
     * 给ImageVie设置本地资源,并采用链式编程将当前ViewHolder返回
     *
     * @param viewId
     * @param resId
     * @return
     */
    public SaViewHolder setImageResource(int viewId, int resId) {
        ImageView view = getView(viewId);
        view.setImageResource(resId);
        return this;
    }

    /**
     * 给ImageVie设置Drawable,并采用链式编程将当前ViewHolder返回
     *
     * @param viewId
     * @param drawable
     * @return
     */
    public SaViewHolder setImageDrawable(int viewId, Drawable drawable) {
        ImageView view = getView(viewId);
        view.setImageDrawable(drawable);
        return this;
    }

    /**
     * 给ImageVie设置Bitmap,并采用链式编程将当前ViewHolder返回
     *
     * @param viewId
     * @param bm
     * @return
     */
    public SaViewHolder setImageBitmap(int viewId, Bitmap bm) {
        ImageView view = getView(viewId);
        view.setImageBitmap(bm);
        return this;
    }


    /**
     * 给ImageView设置网络图片
     *
     * @param viewId       控件的id
     * @param imgUrl       网络图片地址
     * @param loadingImg   加载中的图片
     * @param loaderrorImg 加载失败的图片
     * @return
     */
    public SaViewHolder setImageUrl(int viewId, String imgUrl, int loadingImg, int loaderrorImg) {
        NetworkImageView view = getView(viewId);
        view.setTag(imgUrl);
        view.setDefaultImageResId(loadingImg);
        view.setErrorImageResId(loaderrorImg);
        view.setImageUrl(imgUrl, mImageLoader);
        return this;
    }


}