Question

怎么用volley配合recyclerview使用

Answer 1

publicclassBFImageCacheimplementsImageLoader.ImageCache{/**单例*/privatestaticBFImageCachecache;/**内存缓存*/privateHashMapmemory;/**缓存目录*/privateStringcacheDir;/**获取单例*/publicstaticBFImageCachegetInstance(){if(null==cache){cache=newBFImageCache();}returncache;}/**初始化方法，Application的onCreate中调用*/publicvoidinitilize(Contextcontext){memory=newHashMap();cacheDir=context.getCacheDir().toString()+File.separator;}@OverridepublicBitmapgetBitmap(Stringurl){//获取图片try{Stringkey=MD5Util.toMd5HexString(url);if(memory.containsKey(key)){returnmemory.get(key);}else{Filefile=newFile(cacheDir+key);if(file.exists()){Bitmapbitmap=BitmapFactory.decodeFile(file.toString());returnbitmap;}}}catch(Exceptione){Log.d(\"halfman\",e.getMessage());}returnnull;}@OverridepublicvoidputBitmap(Stringurl,Bitmapbitmap){//尺寸超过10时，清理缓存并放入内存if(memory.size()==10){Iteratorit=memory.keySet().iterator();while(it.hasNext()){try{Stringkey=it.next();Bitmaptemp=memory.get(key);Filefile=newFile(cacheDir+key);FileOutputStreamos;os=newFileOutputStream(file,false);temp.compress(CompressFormat.JPEG,100,os);os.flush();os.close();}catch(Exceptione){e.printStackTrace();}}memory.clear();}//放入图片到内存memory.put(MD5Util.toMd5HexString(url),bitmap);}}