CoreLocation location of iOS iOS9.0, ios9.0corelocation

CoreLocation location of iOS iOS9.0, ios9.0corelocation
I. Introduction

• If iOS9.0 is in the foreground authorization status, the user location cannot be obtained in the background by default.
  • What should I do if I authorize the app to get the background location?
    • You can set the following attribute to YES to continue obtaining the background location, but blue bars will appear.
    • Note: You must set the corresponding background mode. Select the background mode: location updates.

      @property(assign,nonatomic) BOOL allowsBackgroundLocationUpdates

• Note: iOS9.0 can be used to request the user location at a time.

  -(Void) requestLocation // successful call, location array, elements sorted by time-(void) locationManager :( nonnull CLLocationManager *) manager didUpdateLocations :( nonnull NSArray <CLLocation *> *) locations // call failure-(void) locationManager :( nonnull CLLocationManager *) manager didFailWithError :( nonnull NSError *) error

  • RequestLocation:
    • Sort by positioning accuracy from low to high and locate them one by one. If the obtained location is not the most accurate, the agent will tell the outside world after locating timeout (the-locationManager: didFailWithError: method must be implemented)
    • It cannot be used together with the startUpdatingLocation Method

II. Implementation Step 1. Foreground Positioning

• 1. Import the CoreLocation framework and the corresponding primary header file

   #import <CoreLocation/CoreLocation.h>

• Create a CLLcationManager object, set the proxy request to the foreground to locate and authorize, and configure the KEY
  
  Configure KEY. png

  _locationM = [[CLLocationManager alloc] init];  _locationM.delegate = self;  if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0)       {          [_locationM requestWhenInUseAuthorization];      }

• 3. Call the startUpdatingLocation method of the CLLcationManager object to update the user location.

  [_locationM startUpdatingLocation];

• 4. Implement proxy methods and receive location parameters

  -(void)locationManager:(nonnull CLLocationManager *)manager didUpdateLocations:(nonnull NSArray<CLLocation *> *)locations

2. Background Positioning

• Solution 1: When the APP is in the foreground positioning authorization scenario, check the background running mode update locations (for example), and call the following method to set to allow background Positioning

  
  Select a model. PNG

  if ([[UIDevice currentDevice].systemVersion floatValue] >= 9.0) {   _locationM.allowsBackgroundLocationUpdates = YES;}

  • Note: If the APP is in the background, blue lines will appear.

• Solution 2: Request the frontend and backend to locate the authorization and configure the KEY

  [_locationM requestAlwaysAuthorization];

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