2014/10/15 下午 10:11:09

iphone Programming Glossary: location2

how to calculate two coordinates distance in objective c?

http://stackoverflow.com/questions/1980898/how-to-calculate-two-coordinates-distance-in-objective-c

How do I calculate the distance between two points of latitude and longitude?

http://stackoverflow.com/questions/2652167/how-do-i-calculate-the-distance-between-two-points-of-latitude-and-longitude

share improve this question CLLocation location1 CLLocation alloc initWithLatitude lat1 longitude long1 CLLocation location2 CLLocation alloc initWithLatitude lat2 longitude long2 NSLog @ Distance i meters f location1 distanceFromLocation location2.. CLLocation alloc initWithLatitude lat2 longitude long2 NSLog @ Distance i meters f location1 distanceFromLocation location2 location1 release location2 release You also need to add CoreLocation.framework to your project and add the import statement.. lat2 longitude long2 NSLog @ Distance i meters f location1 distanceFromLocation location2 location1 release location2 release You also need to add CoreLocation.framework to your project and add the import statement #import CoreLocation CoreLocation.h..

How to draw graphics in iphone gesture?

http://stackoverflow.com/questions/6173685/how-to-draw-graphics-in-iphone-gesture

CGRectMake 30.0 30.0 60.0 60.0 CGContextStrokePath context else if gR state UIGestureRecognizerStateChanged CGPoint location2 gR locationInView self panIndicator.frame self.bounds panIndicator.startPoint location panIndicator.endPoint location2 panIndicator.. location2 gR locationInView self panIndicator.frame self.bounds panIndicator.startPoint location panIndicator.endPoint location2 panIndicator setNeedsDisplay I don't know why PanIncicator drawRect doesn't get called panIndicator drawRect CGRectMake..

Draw Line with gesture

http://stackoverflow.com/questions/6436990/draw-line-with-gesture

or in your MyHolderView view subclass the example here would be in the MyHolderView class so that the location1 and location2 instance variables can be shared easily with the drawRect method. void scale id sender if sender pinchRecognizer this allows.. num_touches pinchRecognizer numberOfTouches save locations to some instance variables like `CGPoint location1 location2 ` if num_touches 1 location1 pinchRecognizer locationOfTouch 0 inView holderView if num_touches 2 location2 pinchRecognizer.. location1 location2 ` if num_touches 1 location1 pinchRecognizer locationOfTouch 0 inView holderView if num_touches 2 location2 pinchRecognizer locationOfTouch 1 inView holderView tell the view to redraw. holderView setNeedsDisplay and then in the..