谷歌地图iOS版SDK mylocation按钮没有显示
问题描述:
我启用myLocation和myLocationButton, 但它没有出现在我的视线。
我试着登录_mapView.myLocation
它是nil
。谷歌地图iOS版SDK mylocation按钮没有显示
我需要显示myLocation dot和myLocationButton。
有人可以帮助我,谢谢!
//
// 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];
}
答
我发现显示按钮,让用户位置
// 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;
}
}