Stacking order of UIActionSheet

Question

While my app is displaying a UIActionSheet, I send startUpdatingLocation to the CLLocationManager. This results in a Location Warning, if the user has not yet agreed to letting my app use her location.

Now, the problem is, that the UIAlertView that the Location Manager displays pops up behind my UIActionSheet, and thus the user can not interact with it (thus the location updates never come in, thus the action sheet is never dismissed...).

Is there a way to make the Location Manager dialog appear on the very top (or my action sheet behind it)?

If it's relevant: there is a UITabBar and I use showFromTabBar to display the action sheet.

Answer 1

You should wait until the user confirms that he/she wants to use the GPS and gives permission to use his/her current position before starting updating the location. What if the user is not willing to use the GPS?

Answer 2

Ok,

you can try this. Before starting location updates, use the following property of CLLocationManager

@property(readonly, NS_NONATOMIC_IPHONEONLY) BOOL locationServicesEnabled

If the property value is YES then you can safely start updating the location, and the iPhone OS should not present the UIAlertView asking to enable the location services.

If the value is NO, then dismiss your UIActionSheet before starting updating the location. Hope this helps, otherwise simply disregard the answer ;-)

Answer 3

Let's go for the third round.

The iPhone OS should ask you whether to use your position or not ONLY if there is not an already cached location, i.e. it should ask only the first time. Now, I may be wrong for the third time in a row, but you can try this property of CLLocationManager:

The most recently retrieved user location. (read-only)

@property(readonly, NS_NONATOMIC_IPHONEONLY) CLLocation *location

If the property is nil, then there is no cached location and the OS will ask the user using the UIAlertView. Otherwise no confirmation panel should appear.

If the property value is not nil then you should safely start updating the location, and the iPhone OS should not present the UIAlertView

If the property is nil, then dismiss your UIActionSheet before starting updating the location. I wait the third down vote, if I deserve it ;-)