Prevent scrolling in a MKMapView, also when zooming

by

You can try to handle the pinch gestures yourself using a UIPinchGestureRecognizer:

First set scrollEnabled and zoomEnabled to NO and create the gesture recognizer:

UIPinchGestureRecognizer* recognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self
                                                                                 action:@selector(handlePinch:)];
[self.mapView addGestureRecognizer:recognizer];

In the recognizer handler adjust the MKCoordinateSpan according to the zoom scale:

- (void)handlePinch:(UIPinchGestureRecognizer*)recognizer
{
    static MKCoordinateRegion originalRegion;
    if (recognizer.state == UIGestureRecognizerStateBegan) {
        originalRegion = self.mapView.region;
    }    

    double latdelta = originalRegion.span.latitudeDelta / recognizer.scale;
    double londelta = originalRegion.span.longitudeDelta / recognizer.scale;

    // TODO: set these constants to appropriate values to set max/min zoomscale
    latdelta = MAX(MIN(latdelta, 80), 0.02);
    londelta = MAX(MIN(londelta, 80), 0.02);
    MKCoordinateSpan span = MKCoordinateSpanMake(latdelta, londelta);

    [self.mapView setRegion:MKCoordinateRegionMake(originalRegion.center, span) animated:YES];
}

This may not work perfectly like Apple’s implementation but it should solve your issue.

More Related Contents:

  1. iPhone (iOS) app (difficulty on creating) [closed]
  2. MKAnnotationView Push to View Controller when DetailDesclosure Button is Clicked
  3. iOS SDK – Programmatically generate a PDF file
  4. Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init]
  5. How to open preferences/settings with iOS 5.1?
  6. iOS devices as web server [closed]
  7. Drawing Smooth Curves – Methods Needed
  8. How to detect that animation has ended on UITableView beginUpdates/endUpdates?
  9. How can I save an image to the camera roll?
  10. iOS: Access app-info.plist variables in code
  11. How do you determine spacing between cells in UICollectionView flowLayout
  12. iOS Low Memory Crash, but very low memory usage
  13. PDF search on the iPhone
  14. How can I add a watermark in a captured video on iOS [duplicate]
  15. Converting NSData to NSString in Objective c
  16. iOS Pinch Scale and Two Finger Rotate at same time
  17. Annotation details after detail disclosure pressed?
  18. Choose custom sound for local notifications
  19. Access App Identifier Prefix programmatically
  20. Disable Dictation button on the keyboard of iPhone 4S / new iPad
  21. How to center a subview of UIView
  22. Black screen instead of launch image on iPad
  23. returning UIImage from block
  24. How to check the orientation of device programmatically in iPhone? [duplicate]
  25. iOS Stream Audio from one iOS Device to Another
  26. How to get click event from a button added over MKAnnotationView
  27. Check for Internet connection using the iOS SDK [duplicate]
  28. Command /Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1
  29. How to animate application icon in iOS?
  30. Can’t find momd file: Core Data problems

Leave a Comment