提高 Android 通用图像加载器的性能

Question

我正在开发与图像加载器相关的应用程序。我想加载大量图像。所以我使用 android Universal Image Loader 问题是第一次加载时间太长。之后执行速度很快..

由于应用程序加载时间本身，我想执行得非常快。任何有想法的人请发布..

Imageloader 类代码如下所示

    package com.primus.exploretaukymodule;

import java.util.ArrayList;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class Imageadapter extends BaseAdapter {

    ArrayList<String> image_path;

    Context mcontext;

    LayoutInflater inflater;

    ImageLoader load;




     static ImageLoaderConfiguration config ;



     static DisplayImageOptions imgDisplayOptions = new DisplayImageOptions.Builder()
     //.showStubImage(R.drawable.stub_image)
     .cacheInMemory() 
     .cacheOnDisc() 
     //.imageScaleType(ImageScaleType.EXACT) 
     .build();

     static ImageLoader imageLoader = ImageLoader.getInstance();

    public Imageadapter(Context c, ArrayList<String> imageUrls, ImageLoader loader, DisplayImageOptions options) {
        // TODO Auto-generated constructor stub

        image_path=new ArrayList<String>();

        image_path=imageUrls;

        mcontext=c;

        inflater=(LayoutInflater) mcontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        load=loader;

        config = new ImageLoaderConfiguration.Builder(c)
         .enableLogging()
         .memoryCacheSize(41943040)
         .discCacheSize(104857600)
         .threadPoolSize(10)
         .build();

         imageLoader.init(config);           


    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return image_path.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        ViewHolder holder;

         if (convertView == null) {

             holder=new ViewHolder();

             convertView= inflater.inflate(R.layout.explore_gridview_layout, parent, false);

             holder.imageView=(ImageView) convertView.findViewById(R.id.taukytab_grid_image);

             convertView.setTag(holder);


         } 
         else {

             holder=(ViewHolder) convertView.getTag();
         }


         holder.imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);

         imageLoader.displayImage(image_path.get(position),holder.imageView, imgDisplayOptions);

         return convertView;
    }

    class ViewHolder
    {
        ImageView imageView;
    }

}

谢谢你..

Answer 1

不是因为缓存吗？如果是这样，那么要更快地加载，您需要更快的 Internet 连接或将图像存储在资产中，并在从网络加载它们之前检查它们是否存在。