解决Android快速滑动时图片一闪一闪问题

概述快速滑动图片一闪一闪的问题，图片加载等处理在这里不介绍，主要就是介绍下在Adapter中维护一个LinkedHashMap解决上述问题

快速滑动图片一闪一闪的问题，图片加载等处理在这里不介绍，主要就是介绍下在Adapter中维护一个linkedHashMap解决上述问题

package com.longraise.seller.adapter; import androID.content.Context;import androID.graphics.Bitmap;import androID.graphics.drawable.BitmapDrawable;import androID.vIEw.LayoutInflater;import androID.vIEw.VIEw;import androID.vIEw.VIEwGroup;import androID.Widget.AbsListVIEw;import androID.Widget.BaseAdapter;import androID.Widget.ImageVIEw;import androID.Widget.ListVIEw;import androID.Widget.TextVIEw; import com.longraise.seller.R;import com.longraise.seller.vIEw.Voicebutton; import java.lang.ref.softReference;import java.util.linkedHashMap;import java.util.List;import java.util.Map; import cc.sdkutil.control.image.CCImageLoader;import cc.sdkutil.control.image.CCImageLoaderCallback;import cc.sdkutil.control.inject.CCInjectUtil;import cc.sdkutil.model.inject.CCInjectRes; /** * Created by wangcong on 15-1-8. */public class OrderFinishAdapter extends BaseAdapter {   //convertvIEw ID  private final static int BASE_ID = 0x0fff00;   private Context mContext;  private List<Map<String,Object>> mAllList;   //图片加载相关  CCImageLoader mImageLoader;  //用于缓存图片，减小快速滑动时图片显示落帧现象  final linkedHashMap<String,SoftReference<Bitmap>> linkedHashMap;  final int MAX_SIZE = 16;   public OrderFinishAdapter(Context context,List<Map<String,Object>> List) {    this.mContext = context;    this.mAllList = List;    linkedHashMap = new linkedHashMap<String,SoftReference<Bitmap>>(16,0.75f,true) {       private static final long serialVersionUID = 1L;       @OverrIDe      protected boolean removeEldestEntry(Entry<String,SoftReference<Bitmap>> eldest) {        boolean flag = size() > MAX_SIZE;        if (flag) {          SoftReference<Bitmap> softReference = eldest.getValue();          Bitmap bitmap = softReference.get();          if (bitmap != null) bitmap.recycle();          remove(eldest.getKey());        }        return flag;      }    };  }   public int getCount() {    return mAllList.size();  }   public Object getItem(int position) {    return mAllList.get(position);  }   public long getItemID(int position) {    return position;  }   @SuppressWarnings("deprecation")  public VIEw getVIEw(int position,VIEw convertVIEw,VIEwGroup parent) {    VIEwHolder holder = null;    if (convertVIEw == null) {      convertVIEw = LayoutInflater.from(mContext).inflate(R.layout.adapter_finish_item,parent,false);      holder = new VIEwHolder();      CCInjectUtil.inject(holder,convertVIEw);      convertVIEw.setTag(holder);    } else {      holder = (VIEwHolder) convertVIEw.getTag();    }    convertVIEw.setID(BASE_ID + position);    final Map<String,Object> map = mAllList.get(position);    //处理图片    SoftReference<Bitmap> softReference = linkedHashMap.get(map.get("orderimgurl"));    Bitmap bitmap = softReference == null ? null : softReference.get();    if (bitmap == null) {      holder.image.setBackgroundResource(R.drawable.default_image_error);      if (mImageLoader == null)        mImageLoader = new CCImageLoader.Builder().needCacheIndisk().outSize(120,120)            .callback(new CCImageLoaderCallback() {              @OverrIDe              public voID onSuccess(Bitmap bitmap,Object... obJs) {                super.onSuccess(bitmap,obJs);                if (bitmap != null) { //图片加载成功后处理                  ImageVIEw imageVIEw = (ImageVIEw) obJs[0];                  imageVIEw.setBackgroundDrawable(new BitmapDrawable(mContext.getResources(),bitmap));                  SoftReference<Bitmap> soft = new SoftReference<Bitmap>(bitmap);                  linkedHashMap.put(obJs[1] + "",soft);                  bitmap = null;                }              }            }).build();      mImageLoader.loadNetimage(map.get("orderimgurl") + "",holder.image,map.get("orderimgurl"));    } else {      holder.image.setBackgroundDrawable(new BitmapDrawable(mContext.getResources(),bitmap));    }         return convertVIEw;  }   static class VIEwHolder {     @CCInjectRes(R.ID.order_item_image)    ImageVIEw image;  }}

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