图片无法解码 about largeimage HOT 8 CLOSED

            //加载完整图片的缩略图
            try {
                int screenWidth = context.getResources().getDisplayMetrics().widthPixels;
                int screenHeight = context.getResources().getDisplayMetrics().heightPixels;
                int s = (int) Math.sqrt(1.0f * imageWidth * imageHeight / (screenWidth / 2) / (screenHeight / 2));
                cacheImageScale = getNearScale(s);
                if (cacheImageScale < s) {
                    cacheImageScale *= 2;
                }
                loadData.handler.sendMessage(loadData.handler.obtainMessage(MESSAGE_PIC, cacheImageScale));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

应该是这块代码中 getNearScale(s)计算有问题 图片计算后s值为1  getNearScale(s);得到的值也是1
因此会抛出
Bitmap too large to be uploaded into a texture (440x4431, max=4096x4096)
建议向上取整：
  (int) Math.sqrt(1.0f * imageWidth * imageHeight / (screenWidth / 2) / (screenHeight / 2));
改为
  int s = (int) Math.sqrt(Math.ceil(1.0f * imageWidth * imageHeight / (screenWidth / 2) / (screenHeight / 2)));