/**

	 * 初始化imageLoader

	 */

	public void initImageLoader() {

		File cacheDir = StorageUtils.getCacheDirectory(getApplicationContext());

		ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(

				getApplicationContext())

				.memoryCache(new LruMemoryCache(5 * 1024 * 1024))

				.memoryCacheSize(10 * 1024 * 1024)

				.discCache(new UnlimitedDiscCache(cacheDir))

				.discCacheFileNameGenerator(new HashCodeFileNameGenerator())

				.build();

		ImageLoader.getInstance().init(config);

	}

	public DisplayImageOptions getOptions(int drawableId) {

		return new DisplayImageOptions.Builder().showImageOnLoading(drawableId)

				.showImageForEmptyUri(drawableId).showImageOnFail(drawableId)

				.resetViewBeforeLoading(true).cacheInMemory(true)

				.cacheOnDisc(true).imageScaleType(ImageScaleType.EXACTLY)

				.bitmapConfig(Bitmap.Config.RGB_565).build();

	}

ImageLoader.getInstance().displayImage(

					avatarUrl,

					holder.mImage,

					MyApplication.getInstance().getOptions(

							R.drawable.user_icon_default_main),

					new SimpleImageLoadingListener() {

						@Override

						public void onLoadingComplete(String imageUri,

								View view, Bitmap loadedImage) {

							super.onLoadingComplete(imageUri, view, loadedImage);

						}

					});

// 设置PullToRefresh

		mListView.setMode(Mode.BOTH);

		mListView.setOnRefreshListener(new OnRefreshListener2<ListView>() {

			// 下拉Pulling Down

			@Override

			public void onPullDownToRefresh(

					PullToRefreshBase<ListView> refreshView) {

				String label = DateUtils.formatDateTime(MainAct.this,

						System.currentTimeMillis(), DateUtils.FORMAT_SHOW_TIME

								| DateUtils.FORMAT_SHOW_DATE

								| DateUtils.FORMAT_ABBREV_ALL);

				refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);

				mListView.setMode(Mode.BOTH);

				pullFromUser = true;

				mRefreshType = RefreshType.REFRESH;

				pageNum = 0;

				lastItemTime = getCurrentTime();

				//获取数据

				fetchData();

			}

			// 上拉Pulling Up

			@Override

			public void onPullUpToRefresh(

					PullToRefreshBase<ListView> refreshView) {

				// 上拉的时候添加选项

				mRefreshType = RefreshType.LOAD_MORE;

				//获取数据

				fetchData();

			}

		});

		actualListView = mListView.getRefreshableView();

		actualListView.setFastScrollEnabled(true);

		mEntities = new ArrayList<RankEntity>();

		mAdapter = new MainListAdapter(MainAct.this, mEntities);

		actualListView.setAdapter(mAdapter);

		if (mEntities.size() == 0) {

			fetchData();

		}

		mListView.setState(State.RELEASE_TO_REFRESH, true);