我正在使用凌空从服务器的水平滑动视图中显示图像,但我的图像是相当大的,这是我得到一个例外的内存
下面是我的凌空课:
public class Volley{ private RequestQueue mRequestQueue; private ImageLoader mImageLoader; public Volley(Context ctx) { Log.v("Volley","Volley onCreate"); mRequestQueue = com.android.volley.toolBox.Volley.newRequestQueue(ctx); final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024); final int cacheSize = maxMemory / 8; ImageLoader.ImageCache imageCache = new ImageLoader.ImageCache() { LruCache<String,Bitmap> imageCache = new LruCache<String,Bitmap>(cacheSize); @Override public void putBitmap(String key,Bitmap value) { imageCache.put(key,value); } @Override public Bitmap getBitmap(String key) { return imageCache.get(key); } }; mImageLoader = new ImageLoader(mRequestQueue,imageCache); } public void clear(Context ctx) { mRequestQueue.cancelAll(ctx); mImageLoader = null; mRequestQueue = null; } public RequestQueue getRequestQueue() { return mRequestQueue; } public ImageLoader getImageLoader() { return mImageLoader; }}
图像加载器代码:
image.setImageUrl(imagePhoto.url,getVolley(getContext()).getImageLoader()); public Volley getVolley(Context ctx) { if(mVolley == null) { mVolley = new Volley(getContext()); } return mVolley; }
例外:
> 06-10 22:14:27.462: E/AndroidRuntime(10060): FATAL EXCEPTION: Thread-29479 06-10 22:14:27.462: E/AndroidRuntime(10060): java.lang.OutOfMemoryError 06-10 22:14:27.462: E/AndroidRuntime(10060): at com.android.volley.toolBox.ByteArrayPool.getBuf(ByteArrayPool.java:101) 06-10 22:14:27.462: E/AndroidRuntime(10060): at com.android.volley.toolBox.PoolingByteArrayOutputStream.<init>(PoolingByteArrayOutputStream.java:53) 06-10 22:14:27.462: E/AndroidRuntime(10060): at com.android.volley.toolBox.BasicNetwork.entityToBytes(BasicNetwork.java:202) 06-10 22:14:27.462: E/AndroidRuntime(10060): at com.android.volley.toolBox.BasicNetwork.performRequest(BasicNetwork.java:104) 06-10 22:14:27.462: E/AndroidRuntime(10060): at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:105)
解决方法
我确实解决了这个问题,为LruCache的BitmapLruCache提供了适当的缓存
public class BitmapLruCache extends LruCache<String,Bitmap> implements ImageLoader.ImageCache { public static int getDefaultLruCacheSize() { final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024); final int cacheSize = maxMemory / 8; return cacheSize; } public BitmapLruCache() { this(getDefaultLruCacheSize()); } public BitmapLruCache(int sizeInKiloBytes) { super(sizeInKiloBytes); } @Override protected int sizeOf(String key,Bitmap value) { return value.getRowBytes() * value.getHeight() / 1024; } @Override public Bitmap getBitmap(String url) { return get(url); } @Override public void putBitmap(String url,Bitmap bitmap) { put(url,bitmap); }
}
链接在这里:
Android Volley ImageLoader – BitmapLruCache parameter?