A UIImage has a property imageOrientation, which instructs the UIImageView and other UIImage consumers to rotate the raw image data. There’s a good chance that this flag is being saved to the exif data in the uploaded jpeg image, but the program you use to view it is not honoring that flag. To rotate the … Read more
Switch from use of UIGraphicsBeginImageContext to UIGraphicsBeginImageContextWithOptions (as documented on this page). Pass 0.0 for scale (the third argument) and you’ll get a context with a scale factor equal to that of the screen. UIGraphicsBeginImageContext uses a fixed scale factor of 1.0, so you’re actually getting exactly the same image on an iPhone 4 as … Read more
The simplest way to resize an UIImage?
Loading/Downloading image from URL on Swift
You are looking for Map Overlay MKOverlayView. Check these tutorials: Overlay View Image Overlay Creating overlay Creating a MKOverlayView Create a subclass of MKOverlayView like: .h #import #import @interface MapOverlayView : MKOverlayView { } @end .m #import “MapOverlayView.h” @implementation MapOverlayView – (void)drawMapRect:(MKMapRect)mapRect zoomScale:(MKZoomScale)zoomScale inContext:(CGContextRef)ctx { UIImage *image = [UIImage imageNamed:@”yourImage.png”]; CGImageRef imageReference = image.CGImage; MKMapRect … Read more