android listview异步加载网络图片的三种方式 （官方推荐）

/** Automatically generated file. DO NOT MODIFY */
package com.example.android.imagedownloader;

public final class BuildConfig {
    public final static boolean DEBUG = true;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件         475  2014-04-13 18:27  .classpath
     文件         853  2014-04-13 18:27  .project
     目录           0  2014-04-13 18:27  .settings\
     文件         177  2014-04-13 18:27  .settings\org.eclipse.jdt.core.prefs
     文件         772  2014-04-13 18:26  AndroidManifest.xml
     目录           0  2014-04-13 18:27  assets\
     目录           0  2014-04-13 18:29  bin\
     文件         772  2014-04-13 18:27  bin\AndroidManifest.xml
     目录           0  2014-04-13 18:27  bin\classes\
     文件       23756  2014-04-13 18:29  bin\classes.dex
     目录           0  2014-04-13 18:27  bin\classes\com\
     目录           0  2014-04-13 18:27  bin\classes\com\example\
     目录           0  2014-04-13 18:27  bin\classes\com\example\android\
     目录           0  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\
     文件         379  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\BuildConfig.class
     文件        7301  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageAdapter.class
     文件        1676  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader$1.class
     文件         736  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader$2.class
     文件        2713  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader$BitmapDownloaderTask.class
     文件        1335  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader$DownloadedDrawable.class
     文件         988  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader$FlushedInputStream.class
     文件        1349  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader$Mode.class
     文件        9882  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageDownloader.class
     文件        1863  2014-04-13 18:27  bin\classes\com\example\android\imagedownloader\ImageListActivity.class
     文件         391  2014-04-13 18:29  bin\classes\com\example\android\imagedownloader\R$attr.class
     文件         451  2014-04-13 18:29  bin\classes\com\example\android\imagedownloader\R$drawable.class
     文件         549  2014-04-13 18:29  bin\classes\com\example\android\imagedownloader\R$id.class
     文件         450  2014-04-13 18:29  bin\classes\com\example\android\imagedownloader\R$layout.class
     文件         570  2014-04-13 18:29  bin\classes\com\example\android\imagedownloader\R$string.class
     文件         650  2014-04-13 18:29  bin\classes\com\example\android\imagedownloader\R.class
     目录           0  2014-04-13 18:29  bin\dexedLibs\
............此处省略41个文件信息