How to specify size for iPhone 6/7 customised edge-to-edge image?

Question

Say I want a bundled image to take up all available screen width in an iPhone app - for example a banner. I\'d create my_banner.png with width 320px

Answer 1

Just measure the device dimensions and call the image that you want. ie Do it programatically

So in your appdelegate have globals

deviceHeight = self.window.frame.size.height;
deviceWidth = self.window.frame.size.width;

that you can call repeatedly. Then check them and call the appropriate image

if (deviceWidth == 640){
image = IPHONE4IMAGE;
deviceString = @"iPhone4";
}
else...