---

1.首先在plist文件中添加

<key>NSLocationWhenInUseUsageDescription</key><string>需要定位</string>
<key>NSLocationAlwaysUsageDescription</key><string>需要定位</string>

2.之後在Build Phases 中的Link Binary With Libraries 中添加 CoreLoaction.framework

3.在需要調取的地方引入#import <CoreLocation/CoreLocation.h> 以及<CLLocationManagerDelegate>代理

下面是具體方法

#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>
@interface ViewController ()<CLLocationManagerDelegate>

{
CLLocationManager * locationManager;
NSString * currentCity; //當前城市
}
@end

@implementation ViewController
- (void)locate {
//判斷定位功能是否打開
if ([CLLocationManager locationServicesEnabled]) {
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
// [locationManager requestAlwaysAuthorization];
currentCity = [[NSString alloc] init];
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0){

[locationManager requestWhenInUseAuthorization]; //調用了這句,就會彈出允許框了.

}
[locationManager startUpdatingLocation];
}

}




- (void)viewDidLoad {
[super viewDidLoad];

[self locate];

};

//定位失敗則執行此代理方法
//定位失敗彈出提示框,點擊"打開定位"按鈕,會打開系統的設置,提示打開定位服務
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
UIAlertController * alertVC = [UIAlertController alertControllerWithTitle:@"允許\"定位\"提示" message:@"請在設置中打開定位" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction * ok = [UIAlertAction actionWithTitle:@"打開定位" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
//打開定位設置
// NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
// [[UIApplication sharedApplication] openURL:settingsURL];
}];
UIAlertAction * cancel = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {

}];
[alertVC addAction:cancel];
[alertVC addAction:ok];
[self presentViewController:alertVC animated:YES completion:nil];

}
//定位成功
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations {
[locationManager stopUpdatingLocation];
CLLocation *currentLocation = [locations lastObject];
CLGeocoder * geoCoder = [[CLGeocoder alloc] init];

//反編碼
[geoCoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
if (placemarks.count > 0) {
CLPlacemark *placeMark = placemarks[0];
currentCity = placeMark.locality;
if (!currentCity) {
currentCity = @"無法定位當前城市";
}
NSLog(@"%@",currentCity); //這就是當前的城市
NSLog(@"%@",placeMark.name);//具體地址: xx市xx區xx街道
}
else if (error == nil && placemarks.count == 0) {
NSLog(@"No location and error return");
}
else if (error) {
NSLog(@"location error: %@ ",error);
}

}];
}
@end

以上就是IOS 定位的全文介紹,希望對您學習和使用IOS應用開發有所幫助.

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