ImageLoader配置

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

    }

    private void initImageLoader() {
        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration
                .Builder(getApplicationContext())
                .defaultDisplayImageOptions(options())
                .build();
        ImageLoader.getInstance().init(configuration);
    }

    private DisplayImageOptions options() {
        DisplayImageOptions options = new DisplayImageOptions
                .Builder()
                .cacheOnDisk(true)
                .cacheInMemory(true)
                .displayer(new SimpleBitmapDisplayer())
                .build();
        return options;
    }