解决Android快速滑动时图片一闪一闪问题

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;
 

public class OrderFinishAdapter extends baseAdapter {
 
  //convertview id
  private final static int base_ID = 0x0fff00;
 
  private Context mContext;
  private List> 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> linkedHashMap;
  final int MAX_SIZE = 16;
 
  public OrderFinishAdapter(Context context, List> list) {
    this.mContext = context;
    this.mAllList = list;
    linkedHashMap = new linkedHashMap>(16, 0.75f, true) {
 
      private static final long serialVersionUID = 1L;
 
      @Override
      protected boolean removeEldestEntry(Entry> eldest) {
 boolean flag = size() > MAX_SIZE;
 if (flag) {
   SoftReference 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 map = mAllList.get(position);
    //处理图片
    SoftReference 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 soft = new SoftReference(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;
  }
}

以上所述就是本文的全部内容了，希望大家能够喜欢。