AppApplication.java

package com.topnews.app;

import java.io.File;

import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache;
import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.QueueProcessingType;
import com.nostra13.universalimageloader.utils.StorageUtils;

import android.app.Application;
import android.content.Context;
import android.util.Log;

public class AppApplication extends Application {
	
	@Override
	public void onCreate() {
		// TODO Auto-generated method stub
		super.onCreate();
		initImageLoader(getApplicationContext());
	}

	@Override
	public void onTerminate() {
		// TODO Auto-generated method stub
		super.onTerminate();
		//����ݻٵ�ʱ������������
	}
	/** ��ʼ��ImageLoader */
	public static void initImageLoader(Context context) {
		File cacheDir = StorageUtils.getOwnCacheDirectory(context, "topnews/Cache");//��ȡ�������Ŀ¼��ַ
		Log.d("cacheDir", cacheDir.getPath());
		//��������ImageLoader(���е�ѡ��ǿ�ѡ��,ֻʹ����Щ������붨��)����������趨��APPLACATION���棬����Ϊȫ�ֵ����ò���
		ImageLoaderConfiguration config = new ImageLoaderConfiguration
				.Builder(context)
				//.memoryCacheExtraOptions(480, 800) // max width, max height���������ÿ�������ļ�����󳤿�
				//.discCacheExtraOptions(480, 800, CompressFormat.JPEG, 75, null) // Can slow ImageLoader, use it carefully (Better don't use it)���û������ϸ��Ϣ����ò�Ҫ�������
				.threadPoolSize(3)//�̳߳��ڼ��ص�����
				.threadPriority(Thread.NORM_PRIORITY - 2)
				.denyCacheImageMultipleSizesInMemory()
				//.memoryCache(new UsingFreqLimitedMemoryCache(2 * 1024 * 1024)) // You can pass your own memory cache implementation�����ͨ���Լ����ڴ滺��ʵ��
				//.memoryCacheSize(2 * 1024 * 1024)  
				///.discCacheSize(50 * 1024 * 1024)  
				.discCacheFileNameGenerator(new Md5FileNameGenerator())//�������ʱ���URI������MD5 ����
				//.discCacheFileNameGenerator(new HashCodeFileNameGenerator())//�������ʱ���URI������HASHCODE����
				.tasksProcessingOrder(QueueProcessingType.LIFO)
				//.discCacheFileCount(100) //�����File����
				.discCache(new UnlimitedDiscCache(cacheDir))//�Զ��建��·��
				//.defaultDisplayImageOptions(DisplayImageOptions.createSimple())
				//.imageDownloader(new BaseImageDownloader(context, 5 * 1000, 30 * 1000)) // connectTimeout (5 s), readTimeout (30 s)��ʱʱ��
				.writeDebugLogs() // Remove for release app
				.build();
		// Initialize ImageLoader with configuration.
		ImageLoader.getInstance().init(config);//ȫ�ֳ�ʼ��������
	}
}