OutOfMemoryError：内存耗尽

Question

我遇到一个问题，即我是以编程方式从服务器端下载图像但它返回OutOfMemoryError: memory exhausted错误。我不知道为什么因为相同的代码在另一个类或另一个项目中正常运行。请建议我解决同样问题的任何解决方案。

代码：

private Bitmap decodeFile(File f){
        try {
            //decode image size
            BitmapFactory.Options o = new BitmapFactory.Options();
            o.inDither = true;
            o.inPurgeable = true;
            o.inInputShareable = true;
            o.inSampleSize=10;
            o.inJustDecodeBounds = true;
            BitmapFactory.decodeStream(new FileInputStream(f),null,o);

            //Find the correct scale value. It should be the power of 2.
            final int REQUIRED_SIZE=70;
            int width_tmp=o.outWidth, height_tmp=o.outHeight;
            int scale=1;
            while(true){
                if(width_tmp/2<REQUIRED_SIZE || height_tmp/2<REQUIRED_SIZE)
                    break;
                width_tmp/=2;
                height_tmp/=2;
                scale*=2;
            }

            //decode with inSampleSize
            BitmapFactory.Options o2 = new BitmapFactory.Options();
            o2.inSampleSize=scale;
            return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
        } 
        catch(OutOfMemoryError e)
        {
            e.printStackTrace();
        }catch (FileNotFoundException e) {}
        return null;
    }

错误：

05-16 03:03:47.980: E/AndroidRuntime(10709): java.lang.OutOfMemoryError: [memory exhausted]
05-16 03:03:47.980: E/AndroidRuntime(10709):    at dalvik.system.NativeStart.main(Native Method)
05-16 03:03:48.218: I/dalvikvm-heap(10709): Clamp target GC heap from 33.898MB to 32.000MB