Google Maps iOS SDK mylocation button not showing - google-maps-sdk-ios

Question

I enabled myLocation and myLocationButton,
but it not showing on my view.
And I try log _mapView.myLocation it's nil.
I need to showing myLocation dot and myLocationButton.
Have some one can help me, thanks!
//
// ViewController.m
//
#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <GoogleMaps/GoogleMaps.h>
#import "Reachability.h"
#interface ViewController ()<GMSMapViewDelegate,CLLocationManagerDelegate>
{
CLLocationManager * locationManager;
CLLocation *currentLocations;
Reachability * udnReach;
};
#property (strong,nonatomic) GMSMapView * mapView;
#property (strong,nonatomic) NSDictionary * dic;
#property (nonatomic,strong) NSTimer * updatetimer;
#end
#implementation ViewController {
}
- (void)viewDidLoad {
locationManager =[[CLLocationManager alloc]init];
locationManager.delegate =self;
if ([locationManager respondsToSelector:#selector(requestAlwaysAuthorization)]) {
[locationManager requestAlwaysAuthorization];
}
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.activityType = CLActivityTypeAutomotiveNavigation;
[locationManager startUpdatingLocation];
_mapView.delegate = self;
_mapView.myLocationEnabled = YES;
_mapView.settings.myLocationButton = YES;
//Map
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:locationManager.location.coordinate.latitude
longitude:locationManager.location.coordinate.longitude
zoom:16];
_mapView= [GMSMapView mapWithFrame:CGRectZero camera:camera];
[[NSNotificationCenter defaultCenter]addObserver:self selector:#selector(networkStatusChanged:) name:kReachabilityChangedNotification object:nil];
udnReach=[Reachability reachabilityWithHostName:#"google.com"];
// udnReach = [Reachability reachabilityForInternetConnection];
[udnReach startNotifier];
[self updatebike];
self.view = self.mapView;
NSLog(#"User's location: %#", _mapView.myLocation);
// Do any additional setup after loading the view, typically from a nib.
[super viewDidLoad];
}

Answer 1

i find to show button and get userlocation
// Rather than setting -myLocationEnabled to YES directly,
// call this method:
- (void)enableMyLocation
{
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
if (status == kCLAuthorizationStatusNotDetermined)
[self requestLocationAuthorization];
else if (status == kCLAuthorizationStatusDenied || status == kCLAuthorizationStatusRestricted)
return; // we weren't allowed to show the user's location so don't enable
else
[self.view setMyLocationEnabled:YES];
}
// Ask the CLLocationManager for location authorization,
// and be sure to retain the manager somewhere on the class
- (void)requestLocationAuthorization
{
_locationAuthorizationManager = [[CLLocationManager alloc] init];
_locationAuthorizationManager.delegate = self;
[_locationAuthorizationManager requestAlwaysAuthorization];
}
// Handle the authorization callback. This is usually
// called on a background thread so go back to main.
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
if (status != kCLAuthorizationStatusNotDetermined) {
[self performSelectorOnMainThread:#selector(enableMyLocation) withObject:nil waitUntilDone:[NSThread isMainThread]];
_locationAuthorizationManager.delegate = nil;
_locationAuthorizationManager = nil;
}
}