示例#1
0
 private Bitmap getBitmapFromUrl(String imgUrl, int minSide, int maxPixels) {
   URL url;
   Bitmap bitmap = null;
   try {
     url = new URL(imgUrl);
     InputStream is = url.openConnection().getInputStream();
     BufferedInputStream bis = new BufferedInputStream(is);
     bitmap = BitmapLoader.getThumbnail(bis, minSide, maxPixels);
     bis.close();
     is.close();
   } catch (MalformedURLException e) {
     e.printStackTrace();
   } catch (IOException e) {
     e.printStackTrace();
   }
   return bitmap;
 }
示例#2
0
    public void run() {
      if (desc == null) {
        return;
      }

      Bitmap bitmap = null;

      // 如果用户自定义了下载图片的方式,则调用用户的
      if (hasLoader(desc)) {
        bitmap = invokeLoader(desc);

        if (null != bitmap) {
          desc.bitmap = bitmap;

          if (desc.imageLoader.isCacherToFile()) {
            File file = desc.imageLoader.cacheFile();
            if (null != file && saveToPath(file, bitmap)) {}
          }

          notifyLoadResult(desc, true, desc.imageLoader.isCacheToMemery());
        } else {
          notifyLoadResult(desc, false, false);
        }

        return;
      }

      if (desc.filePath != null) {
        try {
          bitmap = BitmapLoader.getThumbnail(desc.filePath, desc.minSide, desc.maxPixels);
        } catch (Exception e) {
          e.printStackTrace();
        }

        if (bitmap != null) {
          desc.bitmap = bitmap;

          notifyLoadResult(desc, true, true);
        } else {
          notifyLoadResult(desc, false, false);
        }
      } else {
        // 先从文件中读.
        if (null != desc.key) {
          String path = desc.path == null ? cachePath : desc.path;
          File cacheFile = new File(path, desc.key);

          if (cacheFile.exists()) {
            //						BitmapFactory.Options opt = new BitmapFactory.Options();
            //						opt.inPreferredConfig = Bitmap.Config.RGB_565;
            //						opt.inPurgeable  =true;
            //						opt.inInputShareable = true;

            bitmap = BitmapLoader.getThumbnail(cacheFile.getPath(), desc.minSide, desc.maxPixels);
          }

          if (null != bitmap) {
            desc.bitmap = bitmap;

            notifyLoadResult(desc, true, true);

            return;
          }
        }
        // 如果文件读取失败则从网络下载
        if (bitmap == null && null != desc.url) {
          try {
            bitmap = getBitmapFromUrl(desc.url, desc.minSide, desc.maxPixels);
            if (null == bitmap) throw new Exception("bitmap is null ,http request failed");
            // 存入本地再缓存在内存
            String path = desc.path == null ? cachePath : desc.path;
            String key =
                desc.key == null ? desc.url.substring(desc.url.lastIndexOf("/") + 1) : desc.key;
            File dir = new File(path);
            dir.mkdirs();
            // 清空缓存的策越,目前是大于100M就将缓存全部清空
            if (dir.length() > MAX_CACHE_FILE_SIZE) clearFileCache(path);
            File file = new File(path, key);
            if (saveToPath(file, bitmap)) {
              desc.bitmap = bitmap;

              notifyLoadResult(desc, true, true);
            } else {
              desc.description = "保存图片失败(可能原因图片无效)";

              notifyLoadResult(desc, false, false);
            }

          } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            desc.description = e.getMessage();

            notifyLoadResult(desc, false, false);
          }
        }
      }
    }