Hi
Following the reccomendations I have set my “config.lua” file to
scale = "letterbox"
but using their method by oversizing the background image results in th bacnground getting cropped. Because of the design of my app I need the entire background image visible so in my case I need
scale = "zoomStretch"
for the background image and
scale = "letterbox"
for everything else.
Anyone have any ideas?
If you stick to letterbox you can use the following to fill up any screen with a background image.
[lua]
local xMin = display.screenOriginX
local yMin = display.screenOriginY
local xMax = display.contentWidth - display.screenOriginX
local yMax = display.contentHeight - display.screenOriginY
local _W = display.contentWidth
local _H = display.contentHeight
local image = display.newImageRect(“image.png”, xMax-xMin, yMax-yMin)
image.x = _W*0.5
image.y = _H*0.5
[/lua]
There may be a few little errors as i just typed that out, but thats the general gist of doing it 
Try it in the simulator on the various phone sizes!
If you stick to letterbox you can use the following to fill up any screen with a background image.
[lua]
local xMin = display.screenOriginX
local yMin = display.screenOriginY
local xMax = display.contentWidth - display.screenOriginX
local yMax = display.contentHeight - display.screenOriginY
local _W = display.contentWidth
local _H = display.contentHeight
local image = display.newImageRect(“image.png”, xMax-xMin, yMax-yMin)
image.x = _W*0.5
image.y = _H*0.5
[/lua]
There may be a few little errors as i just typed that out, but thats the general gist of doing it
Try it in the simulator on the various phone sizes!