89 lines
3.3 KiB
Objective-C
Executable File
89 lines
3.3 KiB
Objective-C
Executable File
/*
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* Copyright 2016 Google Inc. All rights reserved.
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*
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
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* file except in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
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* ANY KIND, either express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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#import "GoogleMapsDemos/Samples/MyLocationViewController.h"
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#import <GoogleMaps/GoogleMaps.h>
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@implementation MyLocationViewController {
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GMSMapView *_mapView;
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BOOL _firstLocationUpdate;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.868
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longitude:151.2086
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zoom:12];
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_mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
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_mapView.delegate = self;
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_mapView.settings.compassButton = YES;
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_mapView.settings.myLocationButton = YES;
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// Listen to the myLocation property of GMSMapView.
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[_mapView addObserver:self
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forKeyPath:@"myLocation"
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options:NSKeyValueObservingOptionNew
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context:NULL];
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self.view = _mapView;
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// Ask for My Location data after the map has already been added to the UI.
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GMSMapView *mapView = _mapView;
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dispatch_async(dispatch_get_main_queue(), ^{
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mapView.myLocationEnabled = YES;
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});
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}
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- (void)mapView:(GMSMapView *)mapView didTapMyLocation:(CLLocationCoordinate2D)location {
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NSString *message = [NSString stringWithFormat:@"My Location Dot Tapped at: [lat: %f, lng: %f]",
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location.latitude, location.longitude];
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UIAlertController *alertController =
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[UIAlertController alertControllerWithTitle:@"Location Tapped"
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message:message
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preferredStyle:UIAlertControllerStyleAlert];
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UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK"
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style:UIAlertActionStyleDefault
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handler:^(UIAlertAction *action){
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}];
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[alertController addAction:okAction];
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[self presentViewController:alertController animated:YES completion:nil];
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}
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- (void)dealloc {
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[_mapView removeObserver:self
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forKeyPath:@"myLocation"
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context:NULL];
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}
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#pragma mark - KVO updates
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- (void)observeValueForKeyPath:(NSString *)keyPath
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ofObject:(id)object
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change:(NSDictionary *)change
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context:(void *)context {
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if (!_firstLocationUpdate) {
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// If the first location update has not yet been received, then jump to that
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// location.
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_firstLocationUpdate = YES;
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CLLocation *location = [change objectForKey:NSKeyValueChangeNewKey];
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_mapView.camera = [GMSCameraPosition cameraWithTarget:location.coordinate
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zoom:14];
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}
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}
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@end
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