cllocation

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iPhone - CLHeading: how can I transform the trueHeading to a vector

I know how to get the coordinates of the magnetic heading: heading.x, heading.y, heading.z The 开发者_运维技巧thing is that I\'d need the (x, y, z)-vector of the trueHeading. How can I create this vec[详细]

2023-02-16 17:52 分类：问答
Cast as double?

How can I turn or maybe cast something to a double? CLLocationDegrees is really a 开发者_StackOverflow中文版double so how do I cast it as double so my if always returns doubles and I can change my fin[详细]

2023-02-15 07:41 分类：问答
store array of cllocation value in userdefaults iphone sdk

hi i have an array of cllocation values, i need to store that array in userdefaults...how do i do it...?[详细]

2023-02-12 23:33 分类：问答
ALAssetPropertyLocation not working on any iOS 4.0+ on 3gs iPhones but working perfectly on iPhone4

I\'ve got an app with location services ENABLED (from settings etc), and I\'m reading all the photos from my device using ALAssetsLibrary.[详细]

2023-02-11 21:19 分类：问答
MKMapKit true distance between two annotations

I want to make a application that calculates the distance between the user\'s current location and the nearest something (store, whatnot). Is there any way to obtain the real distance (following publi[详细]

2023-02-10 04:26 分类：问答
How to tell if you're facing a specific CLLocation in iPhone app

So I\'m making an Augmented Reality app and I\'m a little unsure how to tell, given your current location and heading information and a second location, if you\'re actually facing that location.I thin[详细]

2023-02-07 16:33 分类：问答
Running CLLocation when Application is in background

How is it possible to keep CLLoc开发者_开发技巧ation updating in the background. I believe you need to register the application to do this in the Application delegate but I can not find a reference to[详细]

2023-02-07 07:13 分类：问答
How to get user's location in a later screen for the MapKit?

I am building a navigation-based app for the iPhone, where I calculate the user\'s geolocation in the RootViewController (this is the code for my RootViewController.h) class:[详细]

2023-02-05 22:40 分类：问答
Saving CLLocation location points into an array gives me memory/performance problems

I\'m having a bit of a problem with an iPhone GPS \'runkeeper\'- type app. In almost all ways the app works fine, the way I\'ve designed it is to add the CLLocation objects into an array, and then sto[详细]

2023-02-03 02:34 分类：问答
Is it possible to show a path between two annotations using the MapKit API?

I am working on an app that will show the user the closest locations from a database to the user.When the user selects one of these locations from a list, the user will then see a map on a new screen[详细]

2023-02-02 05:20 分类：问答