如何获取当前位置IOS设备
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【中文标题】如何获取当前位置IOS设备【英文标题】：How to get current location IOS device 【发布时间】：2017-01-26 04:32:47 【问题描述】：我一直在我的应用程序中使用 GMSMap。我想在我的 GMSMap 用户当前位置 lat long。我使用了很多方法，但没有得到当前位置。请帮助并指导如何获取我当前的位置。我已经阅读了很多教程并遵循但没有得到。
我有一个问题，我正在使用方法，我的项目中还有其他工作吗？我好累，请帮忙。
首先，我在我的项目中编写了以下显示方法，然后创建 IPA 并安装我的设备。但是不要获取当前位置的纬度经度。
请帮忙。谢谢你
首先
-(void)CurrentLocationIdentifier
//---- For getting current gps location
locationManager = [CLLocationManager new];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
//------
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
currentLocation = [locations objectAtIndex:0];
[locationManager stopUpdatingLocation];
CLGeocoder *geocoder = [[CLGeocoder alloc] init] ;
[geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error)
if (!(error))
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(@"\nCurrent Location Detected\n");
NSLog(@"placemark %@",placemark);
NSString *locatedAt = [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "];
NSString *Address = [[NSString alloc]initWithString:locatedAt];
_adrs_lbl.text = Address;
NSString *Area = [[NSString alloc]initWithString:placemark.locality];
NSString *Country = [[NSString alloc]initWithString:placemark.country];
_lat_lbl.text = Country;
NSString *CountryArea = [NSString stringWithFormat:@"%@, %@", Area,Country];
NSLog(@"%@",CountryArea);
_long_lbl.text = CountryArea;
else
NSLog(@"Geocode failed with error %@", error);
NSLog(@"\nCurrent Location Not Detected\n");
//return;
//CountryArea = NULL;
];
第二
- (void)viewDidLoad
[super viewDidLoad];
if ([CLLocationManager locationServicesEnabled])
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
[self.locationManager startUpdatingLocation];
else
NSLog(@"Location services are not enabled");
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
CLLocation *location = [locations lastObject];
self.latitudeValue.text = [NSString stringWithFormat:@"%f", location.coordinate.latitude];
self.longtitudeValue.text = [NSString stringWithFormat:@"%f", location.coordinate.longitude];
更新问题
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
currentLocation = [locations lastObject];
if (currentLocation != nil)
NSLog(@"The latitude value is - %@",[NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude]);
NSLog(@"The logitude value is - %@",[NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude]);
//Current
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:currentLocation.coordinate.latitude longitude: currentLocation.coordinate.longitude zoom:13];
self.mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
self.mapView.myLocationEnabled = YES;
self.mapView.delegate = self;
self.mapView.frame = viewDirection.bounds;
[viewDirection addSubview:self.mapView];
// GMSMarker *marker = [[GMSMarker alloc] init];
// marker.position = CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
// marker.title = @"Your Office Name";
// marker.icon = [UIImage imageNamed:@"boss-icon.png"];
// //OR
// marker.icon = [GMSMarker markerImageWithColor:[UIColor blueColor]];
// marker.snippet = @"Current Location";
// marker.map = self.mapView;
GMSMarker *marker1 = [[GMSMarker alloc] init];
marker1.position = CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
marker1.icon = [GMSMarker markerImageWithColor:[UIColor redColor]];
marker1.title = @"my location";
marker1.snippet = @"City Name";
marker1.map = self.mapView;
GMSMarker *marker2 = [[GMSMarker alloc] init];
marker2.position = CLLocationCoordinate2DMake(22.6990,75.8671);
marker2.icon = [GMSMarker markerImageWithColor:[UIColor greenColor]];
marker2.title = @"Destination location";
marker2.snippet = @"City Name";
marker2.map = self.mapView;
NSString *originString = [NSString stringWithFormat:@"%f,%f",currentLocation.coordinate.latitude, currentLocation.coordinate.longitude];
NSString *destinationString = [NSString stringWithFormat:@"%f,%f",22.6990,75.8671];
NSString *str = [NSString stringWithFormat:@"http://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&sensor=false",originString,destinationString];
NSURL *url=[[NSURL alloc]initWithString:[str stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]]];
NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSURLSessionDataTask * dataTask = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)
if(data == nil)
return;
else
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSArray* latestRoutes = [json objectForKey:@"routes"];
NSString *points=[[[latestRoutes objectAtIndex:0] objectForKey:@"overview_polyline"] objectForKey:@"points"];
_text.text = points;
@try
// TODO: better parsing. Regular expression?
NSArray *temp= [self decodePolyLine:[points mutableCopy]];
GMSMutablePath *path = [GMSMutablePath path];
for(int idx = 0; idx < [temp count]; idx++)
CLLocation *location=[temp objectAtIndex:idx];
[path addCoordinate:location.coordinate];
// create the polyline based on the array of points.
GMSPolyline *rectangle = [GMSPolyline polylineWithPath:path];
rectangle.strokeWidth=5.0;
rectangle.strokeColor = [UIColor redColor];
rectangle.map = self.mapView;
[locationManager stopUpdatingLocation];
@catch (NSException * e)
// TODO: show erro
];
[dataTask resume];
[locationManager stopUpdatingLocation];
GMSMapView image
Check my PolyLine IMAGE
【问题讨论】：
兄弟，你是不是在 appdelagates 文件中放了一些方法来要求用户访问位置，并且你在 .plist 文件中放了权限吗？ 请问如何解释？ @HimanshuMoradiya 询问访问位置的方法。请用一些代码解释一下。 [self.locationManager requestWhenInUseAuthorization] [self.locationManager requestAlwaysAuthorization] 使用这个 是否调用了 didUpdateLocation 委托方法？ 【参考方案1】：我一步一步给你解决方案
第 1 步：
首先我们应该得到 Google Map SDK
将以下捆绑包拖到您的项目中（出现提示时，如果需要，请选择复制项目）：
Subspecs/Base/Frameworks/GoogleMapsBase.framework
Subspecs/Maps/Frameworks/GoogleMaps.framework
Subspecs/Maps/Frameworks/GoogleMapsCore.framework
在您的项目中右键单击 GoogleMaps.framework，然后选择 Show In Finder。
将 GoogleMaps.bundle 从 Resources 文件夹拖到您的项目中。出现提示时，确保未选择将项目复制到目标组的文件夹中。
从项目导航器中选择您的项目，然后选择您的应用程序的目标。
打开 Build Phases 选项卡，在 Link Binary with Libraries 中，添加以下框架：
GoogleMapsBase.framework
GoogleMaps.framework
GoogleMapsCore.framework
GoogleMapsM4B.framework (Premium Plan customers only)
Accelerate.framework
CoreData.framework
CoreGraphics.framework
CoreLocation.framework
CoreText.framework
GLKit.framework
ImageIO.framework
libc++.tbd
libz.tbd
OpenGLES.framework
QuartzCore.framework
SystemConfiguration.framework
UIKit.framework
第 2 步：
Get the API key
第 3 步：
Add the below things in your Plist
App Transport Security Settings Dictionary
Allow Arbitrary Loads Boolean YES
<key>NSLocationWhenInUseUsageDescription</key>
<string>RehabTask requires location services to work</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>RehabTask requires location services to work</string>
OR
Privacy - Location When In Use Usage Description string RehabTask requires location services to work
Privacy - Location Always Usage Description string RehabTask requires location services to work
还需要添加
<key>LSApplicationQueriesSchemes</key>
<array>
<string>googlechromes</string>
<string>comgooglemaps</string>
</array>
第 4 步：在 appDelegate 中添加以下代码
AppDelegate.m
@import GoogleMaps;
#import "AppDelegate.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
[GMSServices provideAPIKey:@"AIzaSyCrCEb7qVkURIjq6jsfkPkwgN62sfj6Ff0"];
return YES;
第 5 步：
ViewController.h
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <GoogleMaps/GoogleMaps.h>
@interface ViewController : UIViewController<CLLocationManagerDelegate,GMSMapViewDelegate>
CLLocation *currentLocation;
@property (strong, nonatomic) IBOutlet UIView *viewDirection;
@property (nonatomic, strong) CLLocationManager *locationManager;
@property (nonatomic, strong) GMSMapView *mapView;
@end
ViewController.m
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize viewDirection,locationManager,
@synthesize mapView;
- (void)viewDidLoad
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
locationManager = [[CLLocationManager alloc]init];
locationManager.delegate = self;
locationManager.distanceFilter = 10;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
if([CLLocationManager locationServicesEnabled] == NO)
NSLog(@"Your location service is not enabled, So go to Settings > Location Services");
else
NSLog(@"Your location service is enabled");
if ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])
[locationManager requestWhenInUseAuthorization];
[locationManager startUpdatingLocation];
#pragma mark - CLLocationManagerDelegate method
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
currentLocation = [locations lastObject];
if (currentLocation != nil)
NSLog(@"The latitude value is - %@",[NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude]);
NSLog(@"The logitude value is - %@",[NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude]);
//Current
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:currentLocation.coordinate.latitude longitude: currentLocation.coordinate.longitude zoom:13];
self.mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
self.mapView.myLocationEnabled = YES;
self.mapView.delegate = self;
self.mapView.frame = viewDirection.bounds;
[viewDirection addSubview:self.mapView];
GMSMarker *marker = [[GMSMarker alloc] init];
marker.position = CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
marker.title = @"Your Office Name";
marker.icon = [UIImage imageNamed:@"boss-icon.png"];
OR
marker.icon = [GMSMarker markerImageWithColor:[UIColor blueColor]];
marker.snippet = @"Current Location";
marker.map = self.mapView;
GMSMarker *marker1 = [[GMSMarker alloc] init];
marker1.position = CLLocationCoordinate2DMake(22.7007,75.8759);
marker1.icon = [GMSMarker markerImageWithColor:[UIColor redColor]];
marker1.title = @"Place Name";
marker1.snippet = @"City Name";
marker1.map = self.mapView;
GMSMarker *marker2 = [[GMSMarker alloc] init];
marker2.position = CLLocationCoordinate2DMake(22.6990,75.8671);
marker2.icon = [GMSMarker markerImageWithColor:[UIColor greenColor]];
marker2.title = @"Place Name";
marker2.snippet = @"City Name";
marker2.map = self.mapView;
NSString *originString = [NSString stringWithFormat:@"%f,%f",22.7007,75.8759];
NSString *destinationString = [NSString stringWithFormat:@"%f,%f",22.6990,75.8671];
NSString *str = [NSString stringWithFormat:@"http://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&sensor=false",originString,destinationString];
NSURL *url=[[NSURL alloc]initWithString:[str stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]]];
NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSURLSessionDataTask * dataTask = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)
if(data == nil)
return;
else
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSArray* latestRoutes = [json objectForKey:@"routes"];
NSString *points=[[[latestRoutes objectAtIndex:0] objectForKey:@"overview_polyline"] objectForKey:@"points"];
@try
// TODO: better parsing. Regular expression?
NSArray *temp= [self decodePolyLine:[points mutableCopy]];
GMSMutablePath *path = [GMSMutablePath path];
for(int idx = 0; idx < [temp count]; idx++)
CLLocation *location=[temp objectAtIndex:idx];
[path addCoordinate:location.coordinate];
// create the polyline based on the array of points.
GMSPolyline *rectangle = [GMSPolyline polylineWithPath:path];
rectangle.strokeWidth=5.0;
rectangle.map = self.mapView;
[locationManager stopUpdatingLocation];
@catch (NSException * e)
// TODO: show erro
];
[dataTask resume];
[locationManager stopUpdatingLocation];
//I called below method in above temp(NSArray *temp = [self decodePolyLine:[points mutableCopy]]) for Drawing route between two or more places
-(NSMutableArray *)decodePolyLine: (NSMutableString *)encoded
[encoded replaceOccurrencesOfString:@"\\\\" withString:@"\\"
options:NSLiteralSearch
range:NSMakeRange(0, [encoded length])];
NSInteger len = [encoded length];
NSInteger index = 0;
NSMutableArray *array = [[NSMutableArray alloc] init] ;
NSInteger lat=0;
NSInteger lng=0;
while (index < len)
NSInteger b;
NSInteger shift = 0;
NSInteger result = 0;
do
b = [encoded characterAtIndex:index++] - 63;
result |= (b & 0x1f) << shift;
shift += 5;
while (b >= 0x20);
NSInteger dlat = ((result & 1) ? ~(result >> 1) : (result >> 1));
lat += dlat;
shift = 0;
result = 0;
do
b = [encoded characterAtIndex:index++] - 63;
result |= (b & 0x1f) << shift;
shift += 5;
while (b >= 0x20);
NSInteger dlng = ((result & 1) ? ~(result >> 1) : (result >> 1));
lng += dlng;
NSNumber *latitude = [[NSNumber alloc] initWithFloat:lat * 1e-5] ;
NSNumber *longitude = [[NSNumber alloc] initWithFloat:lng * 1e-5] ;
printf("[%f,", [latitude doubleValue]);
printf("%f]", [longitude doubleValue]);
CLLocation *loc = [[CLLocation alloc] initWithLatitude:[latitude floatValue] longitude:[longitude floatValue]] ;
[array addObject:loc];
return array;
@end
快乐编码:-)
【讨论】：
无需添加。 我想在这段代码中再添加一行`rectangle.strokeColor` 在您的代码中应用相同的代码，并在您的代码中添加 UIView(viewDirection) 作为 outlet 属性。这就足够了。 你不需要添加rectangle.strokeColor。只要按照上面的步骤就可以得到输出。我在上面的API key中使用了key。有一切。不要添加任何额外的代码中的东西， 在方向 url 我也提到了你的 lat,long 值。【参考方案2】：在 info.plist 中添加以下行
<key>NSLocationWhenInUseUsageDescription</key>
<string>App required location because it is needed when .... </string>
还要检查您是否在代码中添加了以下行
if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])
[self.locationManager requestWhenInUseAuthorization];
【讨论】：
【参考方案3】：正如其他人在他们的 cmets 中所建议的那样，您的 info.plist 中需要一到两个密钥，并且您需要询问用户是否允许使用 GPS。代码见此链接：
Checking location service permission on ios
下面的链接列出了你需要输入到你的 info.plist 的键和你需要的代码，但是代码是在 Swift 中的：
http://nshipster.com/core-location-in-ios-8/
【讨论】：
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