Question

I wanna build a gallery, but the my problem is how to load the @2x images?

Will iOS try to search for them or i can specify the path?

Answer 1

Using this if/else block

if ([[UIScreen mainScreen] respondsToSelector:@selector(displayLinkWithTarget:selector:)] &&
    ([UIScreen mainScreen].scale == 2.0)) {
  // Retina display
} else {
  // non-Retina display
}

You can detect whether you’re on a retina display or standard display model and then load the correct image.