异步加载图片框架ImageLoader的使用

转自： http://blog.csdn.net/initphp/article/details/10415523

使用：

MainActivity.java

package com.example.test.com;

import java.io.File;

import android.app.Activity;
import android.os.Bundle;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ImageView;

import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache;
import com.nostra13.universalimageloader.cache.disc.naming.HashCodeFileNameGenerator;
import com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.QueueProcessingType;
import com.nostra13.universalimageloader.core.decode.BaseImageDecoder;
import com.nostra13.universalimageloader.core.download.BaseImageDownloader;
import com.nostra13.universalimageloader.utils.StorageUtils;

public class MainActivity extends Activity {

private ImageLoader imageLoader = ImageLoader.getInstance();  

@Override  
protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    requestWindowFeature(Window.FEATURE_NO_TITLE);  

    ViewGroup viewGroup = (ViewGroup) getLayoutInflater().inflate(R.layout.main, null);  
    setContentView(viewGroup);  
    getLayoutInflater();  
    //ImageView对象用于显示图片  
    ImageView imageView = (ImageView) findViewById(R.id.imageView1);  
    loadImage(imageView);  

}  

private void loadImage(final ImageView imageView) {  
    //图片保存系统路径  
    File cacheDir = StorageUtils.getOwnCacheDirectory(MainActivity.this, "data");  
    DisplayImageOptions imageOptions = new DisplayImageOptions.Builder().cacheInMemory().cacheOnDisc()  
            .build();  
    //一些相关的设置  
    ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(MainActivity.this).threadPoolSize(5)  
            .threadPriority(Thread.NORM_PRIORITY - 1).tasksProcessingOrder(QueueProcessingType.LIFO).denyCacheImageMultipleSizesInMemory()  
            .memoryCache(new LruMemoryCache(1024 * 1024)).memoryCacheSize(1 * 1024 * 1024).discCache(new UnlimitedDiscCache(cacheDir)) // default  
            .discCacheSize(20 * 1024 * 1024).discCacheFileCount(400).discCacheFileNameGenerator(new HashCodeFileNameGenerator()) // default  
            .imageDownloader(new BaseImageDownloader(MainActivity.this)) // default  
            .imageDecoder(new BaseImageDecoder()) // default  
            .defaultDisplayImageOptions(imageOptions) // default  
            .enableLogging().build();  
    //初始化配置  
    imageLoader.init(config);  
    //显示图片  
    imageLoader.displayImage("http://www.baidu.com/img/bdlogo.gif", imageView);  
}  

}