问题
I am working on an iPad app (iOS 5.1), and I use MKMapView to display a map in my app.
I am switching between the three different map orientation modes using MKUserTrackingModeNone, MKUserTrackingModeFollow, MKUserTrackingModeFollowWithHeading and this works.
However I have a problem with the orientation of the map not resetting to north-facing orientation (north on the map being at the top of the screen) when switching from MKUserTrackingModeFollowWithHeading to MKUserTrackingModeNone.
On the built-in maps app on the ipad, the flow is like this:
- When you start the app it is in mode MKUserTrackingModeNone and is north-oriented
- When you toggle the orientation mode it changes to MKUserTrackingModeFollow, and the orientation is still north.
- When you switch again, it changes to MKUserTrackingModeFollowWithHeading, and the map rotates according to the direction you are facing/pointing the iPad.
- When you switch orientation again, it goes back to MKUserTrackingModeNone, and the map nicely rotates back to being north-oriented.
I would like my app to behave in the same way in regards to orientation when switching mode, but when I do as in step 4 above and switch from MKUserTrackingModeFollowWithHeading to MKUserTrackingModeNone, the orientation stays as it was just before making the orientation switch instead of rotating back to north orientation.
I am making the orientation switch with the standard MKUserTrackingBarButtonItem control placed in a toolbar.
Any ideas of how to solve this?
Thanks!
回答1:
Are you using the standard iOS button bar item for doing this? My app does and as soon as I tap it from followWithHeading to non it rotates back to north is up.
回答2:
This is a quick fix that works, though it's not very elegant:
https://stackoverflow.com/a/16576802/2077435
来源：https://stackoverflow.com/questions/10963555/how-to-rotate-ios-mkmapview-so-that-it-north-oriented-when-switching-tracking-mo