android 下载图片出现SkImageDecoder::Factory returned null，BitmapFactory.Options压缩

网上有很多说是因为没有采用HttpClient造成的，尼玛，我改成了HttpClient 请求图片之后还是会出现SkImageDecoder::Factory returned null，

但是直接使用

bitmap = BitmapFactory.decodeStream(is);  是正常的，但解决不了图片大内存溢出的问题

 

解决办法：

重新获取一次流，注意看代码（红色部分）：

/**
     * 根据网络url获取bitmap对象
     * @param url
     * @param width  要获取的宽度
     * @param height 要获取的高度 防止内存溢出
     * @return
     */
    public static Bitmap returnBitMap(String url, int width,int height) {

        Bitmap bitmap = null;
        try {
            HttpGet httpRequest = new HttpGet(url);
            Log.d("returnbitmap", "url="+url);
            HttpClient httpclient = new DefaultHttpClient();
            HttpResponse response = (HttpResponse) httpclient.execute(httpRequest);
            HttpEntity entity = response.getEntity();
            BufferedHttpEntity bufferedHttpEntity = new BufferedHttpEntity(entity);
            InputStream is = bufferedHttpEntity.getContent();
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true; //只获取图片的高宽
            int scale = 1;
            BitmapFactory.decodeStream(is,null,options);
            int w = options.outWidth;
            int h = options.outHeight;
            Log.d("returnbitmap", "w="+w+";h="+h+";width="+width+";height="+height);
            while(true)
            {
                if ((width>0 && w < width) || (height>0 && h < height))
                {
                    break;
                }
                w /= 2;
                h /= 2;
                scale *= 2;
            }
            options.inJustDecodeBounds = false;
            options.inSampleSize = scale;
            is = bufferedHttpEntity.getContent();//重新获取流
            bitmap = BitmapFactory.decodeStream(is,null,options);
            Log.d("returnbitmap", "bitmap="+bitmap+(bitmap==null?"bitmap is null":"bitmap is not null"));
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
         catch (OutOfMemoryError e) {  
             e.printStackTrace();  
         }  
        return bitmap;
    }

 

这样就可以正常下载并显示了，噢耶！！！