Question

我试图在我的ImageLoader的缓存上调用.evictAll（），我无法弄清楚如何访问该方法

private VolleySingleton(){
        mRequestQueue = Volley.newRequestQueue(VolleyApplication.getAppContext());

        mImageLoader = new ImageLoader(this.mRequestQueue, new ImageLoader.ImageCache() {
            private final LruCache<String, Bitmap> mCache = new LruCache<String, Bitmap>(10);
            public void flushLruCache(){ mCache.evictAll();};
            public void putBitmap(String url, Bitmap bitmap) {
                mCache.put(url, bitmap);
            }
            public Bitmap getBitmap(String url) {
                return mCache.get(url);
            }
        });

    }

 mRequestQueue = VolleySingleton.getInstance().getRequestQueue();
 mImageLoader = VolleySingleton.getInstance().getImageLoader();

我已尝试投射我的mImageLoader对象

((ImageLoader.ImageCache) mImageLoader).flushLruCache();

但是这引发了一个错误，说我无法投射这些类型。

如何访问.flushLruCache()方法？

Answer 1

如果我没有误解，你可以在班上继续引用ImageLoader.ImageCache

private ImageLoader.ImageCache mImageCache;    
private VolleySingleton(){
    mRequestQueue =  Volley.newRequestQueue(VolleyApplication.getAppContext());
    mImageLoader = new ImageLoader(this.mRequestQueue,  mImageCache = new ImageLoader.ImageCache() {
        private final LruCache<String, Bitmap> mCache = new LruCache<String, Bitmap>(10);
        public void flushLruCache(){ mCache.evictAll();};
        public void putBitmap(String url, Bitmap bitmap) {
            mCache.put(url, bitmap);
        }
        public Bitmap getBitmap(String url) {
            return mCache.get(url);
        }


    });
}

并在其中声明一个evictAllImages

 public void evictAllImages() {
      if (mImageCache != null) {
           mImageCache.flushLruCache();
      }
 }

在imageLoader的子类上调用方法

1 个答案: