Apps Scaling image issue

[B8787]

Hi all,

I am having a slight scaling issue. I got some code from the net but I don't really know what it does and if it is the best solution to scale an image, I can't figure it out. The problem is with images with a large height the decoder automatiscally cuts off a part from the top and bottom of the picture and I don't know what causes this. The code is:

 //decodes image and scales it to reduce memory consumption
    private Bitmap decodeFile(File f){
        try {
            //decode image size
            BitmapFactory.Options o = new BitmapFactory.Options();
            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=100;
            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 (FileNotFoundException e) {}
        return null;
    }

and

<ImageView
  	  android:id="@+id/image"
	  android:layout_width="fill_parent"
	  android:layout_height="fill_parent"  android:scaleType="centerCrop"
	   />

Thanks for your help!