ImageLoader初见

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activity_main.xml主页布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:orientation="vertical"
    android:layout_height="fill_parent" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:src="@drawable/ic_launcher" />
    
    
    <ImageView
        android:id="@+id/image2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:src="@drawable/ic_launcher" />

</LinearLayout>

权限

   <uses-permission android:name="android.permission.INTERNET" />  
    <!-- Include next permission if you want to allow UIL to cache images on SD card -->  
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  

MyApplication

package com.example.imageloader;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

import android.app.Application;

public class MyApplication extends Application {

	@Override
	public void onCreate() {
		super.onCreate();

		// 创建默认的ImageLoader配置参数
		ImageLoaderConfiguration configuration = ImageLoaderConfiguration
				.createDefault(this);

		// Initialize ImageLoader with configuration.
		ImageLoader.getInstance().init(configuration);
	}

}

MainActivity

package com.example.imageloader;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.assist.ImageSize;
import com.nostra13.universalimageloader.core.download.ImageDownloader.Scheme;
import com.nostra13.universalimageloader.core.listener.ImageLoadingProgressListener;
import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener;

public class MainActivity extends Activity {

	private ImageView mImageView;

	private ImageView image2;
	public static final String CACHE_PATH = Environment
			.getExternalStorageDirectory().getAbsolutePath() + "/zhbj_cache_52";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		mImageView = (ImageView) findViewById(R.id.image);
		image2 = (ImageView) findViewById(R.id.image2);

		String imageUrl = "http://img.mukewang.com/552640c300018a9606000338-300-170.jpg";
		ImageSize mImageSize = new ImageSize(100, 100);

		DisplayImageOptions options = new DisplayImageOptions.Builder()
				.cacheInMemory(true).cacheOnDisk(true)
				.bitmapConfig(Bitmap.Config.RGB_565).build();

		/**
		 * loadImage()加载图片
		 */
		ImageLoader.getInstance().loadImage(imageUrl, mImageSize, options,
				new SimpleImageLoadingListener() {

					@Override
					public void onLoadingStarted(String imageUri, View view) {

					}

					@Override
					public void onLoadingFailed(String imageUri, View view,
							FailReason failReason) {

					}

					@Override
					public void onLoadingComplete(String imageUri, View view,
							Bitmap loadedImage) {
						mImageView.setImageBitmap(loadedImage);
					}

					@Override
					public void onLoadingCancelled(String imageUri, View view) {

					}
				});

		/**
		 * displayImage()加载图片
		 */
		DisplayImageOptions options2 = new DisplayImageOptions.Builder()
				.showImageOnLoading(R.drawable.ic_launcher)
				.showImageOnFail(R.drawable.checked).cacheInMemory(true)
				.cacheOnDisk(true).bitmapConfig(Bitmap.Config.RGB_565).build();

		ImageLoader.getInstance().displayImage(imageUrl, image2, options2);
		ImageLoader.getInstance().displayImage(imageUrl, image2, options2,
				new SimpleImageLoadingListener(),
				new ImageLoadingProgressListener() {

					@Override
					public void onProgressUpdate(String arg0, View arg1,
							int arg2, int arg3) {

					}
				});
	}

}