difference between methods to scale a bitmap

Question

Hi,

There are at least two methods to scale a bitmap in Android, One is to use "inScaled, inDensity, inTargetDensity" in "BitmapFactory.Options" when decode a bitmap source. The other is to use a "Matrix" in "Bitmap.createBitmap".

What I am curious is what the difference between these two method is? What about the quality of produced bitmap? And what about the memory usage? etc...

BR, Henry