#cllocationmanager

この投稿の続きです。

全バージョンのドラカメはAVCaptureMovieFileOutputを使って動画を書き出していました。カメラとマイクから入って来た映像と音声をそのまま記録する場合はこれでも良いのですが、走行速度や時刻などを映像に合成しようと思うとこの方法ではダメで、AVCaptureVideoDataOutputを使ってフレーム毎に映像と速度や時刻などの文字を合成してファイルに保存するようにする必要があります。

現時点では映像の合成部分ができていませんが、大方の機能は動くようになりました。２回目の開発なので１回目に比べると開発が速い！

レコーダー画面。

上部に設定画面を開くボタン、空容量、動画の解像度とフレームレート、音声の記録、バッテリーの充電状態、動画一覧画面を開くボタンを配置。下部には時刻、録画開始・終了ボタン、経度・緯度・高度、走行速度を配置。

  設定画面。

自動録…

How to use MKMapKit using swift in iOS

In your Target->Build Phases->Link Binary Add MapKit.framework and CoreLocation in ViewController.swift import CoreLocation import MapKit Add variable and Constants @IBOutlet var map: MKMapView! let locationManager = CLLocationManager() var CurrentLocation: CLLocation! In ViewDidLoad function override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view,…

One thing is left a subtlety, (perhaps because of the way we have presented it) is the following :

Showing the user's location on a map on the iPhone is fundamentally TWO PROCESSES, not one. The first - Getting the users location - information about where the real users is located on the real world we all live in. The second - Displaying the users location - that pin(avatar) that represents the user, in the map on the phone(virtual world) that represents the real world we all live in.

So we use two frameworks from the SDK, CoreLocation and MapKit.

We set two properties on our View Controller -  a CLLocationManager, and an IBOutlet to a MKMapView.  We also set our view controller to be the delegate of both the MKMapView and the CLLocationManager making sure that we have added the protocols in our header file. Having done this, we can respond to events whenever we get location updates. As always, please read the documentation for more information about more delegate methods.

In our viewDidLoad we start updating location on our location manager. Next on our MKMapView, we set showsUserLocation. We also set other properties on the view controller, however they are not so interesting and we shall skip on the details. So every time the location updates, showsUserLocation changes the pin to the appropriate place on the map.

We do other things manually, like panning and zooming the map to the location of the user. This done using the map view delegate methods. mapView: DidUpdateUserLocation: is whether we put our zooming and panning code.

How to get Current Location Latitude and Longtitude in iOS

Get Current Location Latitude and Longitude Coordinates in iOS Import CoreLocation.framework in to your Xcode

#import <CoreLocation/CoreLocation.h>

Set Delegate

<CLLocationManagerDelegate>

Declare Object for CLLocationManager

@property (strong, nonatomic) CLLocationManager *LocationManager;

Synthesize the Object

@synthesize LocationManager;

In your ViewdidLoad

LocationManager =…

With iOS7, I developed an app tracking all the location with other information like date, time, etc. Yes, right, it's like the other apps like "Life360", which could share the location with other family members. The app is backed with a local server developed with NodeJS and Database by MongoDB. All the techs are pretty freshly popular in current days. While, since iOS8 is pretty widely adapted by most of the users, I started to immigrate the app from iOS 7 to iOS 8. Here is what I did: 1st, I did nothing, simply run the source code on the iOS runned iPhone 5. The MapView shows exactly as before, which includes all the CLLocation fetched from the server. That means the history could be displayed fully on the Map. BUT, the current location annotation(That blue shining circle) doesn't show up. Also, my UIAlertView shows me the Location Service couldn't give me the location update even it tried to. 2nd, I read the Apple Reference, the most obviously differences I had found are the two newly coming functions which aim to request location service permission on the iDevice. I guess they must have the meaning to be here, I mean they are listed as the two functions in the first section on the page. So, I changed my code from - (void)startUpdatingLocation direct calling to having - (void)requestWhenInUseAuthorization first, then - (void)startUpdatingLocation in the delegate function - (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status , when the status is kCLAuthorizationStatusAuthorized or kCLAuthorizationStatusAuthorizedWhenInUse, The result is the request function had been called but the status has been doomed to be kCLAuthorizationStatusNotDetermined . 3rd, After reading a post on StackOverflow, I found my answer. The reason I didn't have the NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription key in Info.plist with a message to be displayed in the prompt. 4th, Everything is good, just like the old time. Summary: To Immigrate Location Service from iOS 7 to iOS 8, do these:

Call requestWhenInUseAuthorization or requestAlwaysAuthorization first.

Implement Delegate Function - (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status

When status indicates the Location Service has been granted, Call startUpdatingLocation

Important: Add string message for NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription in your APPNAME-Info.plist under your support file folder.

Fixed Location Services not working in iOS 8 #dev #it #asnwer

Location Services not working in iOS 8

My app that worked fine on iOS 7 doesn’t work with the iOS 8 SDK.

CLLocationManager doesn’t return a location, and I don’t see my app under Settings -> Location Services either. I did a Google search on the issue, but nothing came up. What could be wrong?

Answer: Location Services not working in iOS 8

I ended up solving my own problem.

Apparently in iOS 8…

How to: iOS 8 : Location Services not working

iOS 8 : Location Services not working

My app that worked fine in iOS 7 doesn’t work with the iOS 8 SDK.

CLLocationManager doesn’t return a location, and I don’t see my app under Settings > Location Services either. I did a Google search on the issue but nothing came up, what could be wrong?

Answer: iOS 8 : Location Services not working

To ensure that this is backwards compatible with iOS 7, you…

This is based on the book: iOS Programming: The Big Nerd Ranch Guide (3rd Edition) (Big Nerd Ranch Guides). I recommend this book because

it receives great recommendation from Amazon

i am using it myself and it really helps me to understand about objective c, cocoa framework, object-oriented and design patterns. it explains about the class objects from cocoa framework and how each classes are related with examples (e.g: inheritance, collection). it also explains about different design patterns such as delegation (callback in objective c), mvc, chain reaction and probably much more (ie: i am still reading it)

Here is my example of creating a simple location services on XCode5 with ios7

Figure 1: Screenshot of XCode which includes step 1 to 3 on creating a new Whereami project

On XCode, go to File > New > Project. Create a new Single View Application call "whereami" for iPhone. Important: Please note that creating a Single View Application in Xcode5 includes STORYBOARD. When you're using STORYBOARD, be sure to use initWithCoder. If you're NOT using STORYBOARD, use initWithNibName

Add CoreLocation.framework. Refer to Figure 1.

On XCode > Project Navigator, click on the top most "Whereami" (Step 1, Figure 1).

On the Editor area, Click go to whereami targets (Step 2, Figure 1)

Go to Build Phases

Expand Link Binary With Libraries (Step 3, Figure 1)

You should see 3 items: CoreGraphics.framework, UIKit.framework, Foundation.framework. Click on the + sign to add CoreLocation.framework

In WhereamiViewController.h do the following:

Import CoreLocation framework. Underneath import <UIKit/UIKit.h> add the following code:

#import <CoreLocation/CoreLocation.h>

Declare that WhereamiViewer conforms to the CLLocationManagerDelegate protocol by adding the the protocols within angled brackets in the interface declaration following the superclass like this:

@interface WhereamiViewController : UIViewController <CLLocationManagerDelegate>

Create CLLocationManager instance

CLLocationManager *locationManager;

The final code should look like this:

#import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> @interface WhereamiViewController : UIViewController <CLLocationManagerDelegate> { CLLocationManager *locationManager; } @end

In WhereamiViewController.m, add the following codes:

#import "WhereamiViewController.h" @implementation WhereamiViewController -(id)initWithCoder:(NSCoder *)aDecoder { self = [super initWithCoder:(NSCoder *)aDecoder]; if (self) { locationManager = [[CLLocationManager alloc] init]; [locationManager setDelegate:self]; [locationManager setDesiredAccuracy:kCLLocationAccuracyBest]; [locationManager startUpdatingLocation]; } return self; } -(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { NSLog(@"%@",[locations lastObject]); } -(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error { NSLog(@"Could not find location:%@", error); } -(void)dealloc { // Tell the location manager to stop sending us messages [locationManager setDelegate:nil]; } @end

Build and run the program. When you're running the simulator, you'll have to simulate its location by clicking the

icon, and select any location from the drop-down list.

If you're running for the first time, you will need to give permission for the application to use location services on the device. Wait for a few seconds while the location is found and you will see results in your console like this:

2014-01-25 08:32:48.905 Whereami[1355:70b] +/- 5.00m (speed -1.00 mps / course -1.00) @ 1/25/14, 8:32:48 AM Singapore Standard Time 2014-01-25 08:32:49.668 Whereami[1355:70b] +/- 5.00m (speed -1.00 mps / course -1.00) @ 1/25/14, 8:32:49 AM Singapore Standard Time 2014-01-25 08:32:50.669 Whereami[1355:70b] +/- 5.00m (speed -1.00 mps / course -1.00) @ 1/25/14, 8:32:50 AM Singapore Standard Time 2014-01-25 08:32:51.670 Whereami[1355:70b] +/- 5.00m (speed -1.00 mps / course -1.00) @ 1/25/14, 8:32:51 AM Singapore Standard Time 2014-01-25 08:32:52.671 Whereami[1355:70b] +/- 5.00m (speed -1.00 mps / course -1.00) @ 1/25/14, 8:32:52 AM Singapore Standard Time 2014-01-25 08:32:53.673 Whereami[1355:70b] +/- 5.00m (speed -1.00 mps / course -1.00) @ 1/25/14, 8:32:53 AM Singapore Standard Time Program ended with exit code: 0

That's it. Enjoy!!!!

References:

IOS Programming, The Big Nerd Ranch Guide edition 3