How to change the position of the x and y of the background?

I have an image with 1280 * 720 and want to use as background. But it always gives me invalid size.
This is my code:

var backgroundBitmapdata: BitmapData = new BitmapData (2048, 2048, true, 00999999)
backgroundBitmapdata.draw (background)
_view.background = new BitmapTexture (backgroundBitmapdata)

I want the background to occupy the whole stage.
Any tips?

any help?

well what did you try?
did you try putting a 2048 image to use with your 2048 bitmap data?

my application is 1280 * 720.
I wanted to use a background of this size. In previous versions of away Imake:
var backgroundBitmapdata: BitmapData = new BitmapData (1920, 1080, false)
backgroundBitmapdata.draw (background)
view.backgroundImage = backgroundBitmapdata

But now it is not possible to do this

You want to make a bitmapData that is 2048 x 2048.
To quickly test, you could resize the image in photoshop.
To use a smaller image, you can resize it in AS3.

Load your image, scale it, and draw it into your BitmapData(2048,2048).
Then you have a valid background image.
Give it a try, and if you get stuck, post your code here.

Good Luck!

Just resize your background to 2048x2048 (or 1024x1024) and draw it into a bitmap data of that size. Then use that bitmap data for the background texture.