1、導(dǎo)入框架

CoreLocation.framework

2吠昭、添加頭文件

#import <CoreLocation/CoreLocation.h>

3喊括、聲明和代理

@interface ViewController ()<CLLocationManagerDelegate>
@property (nonatomic,strong)CLLocationManager *locationManager;
@end

4、初始化

_locationManager = [[CLLocationManager alloc] init];
_locationManager.delegate = self;
_locationManager.desiredAccuracy = kCLLocationAccuracyBest;
_locationManager.distanceFilter = kCLDistanceFilterNone;

5矢棚、開始定位

- (void)startLocation {
    if (IOS8) {
        // 由于iOS8中定位的授權(quán)機制改變, 需要進行手動授權(quán)
        [_locationManager requestAlwaysAuthorization];
        [_locationManager requestWhenInUseAuthorization];
    }
    [_locationManager startUpdatingLocation];
}

6郑什、代理回調(diào)

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
    
    NSLog(@"%@",[NSString stringWithFormat:@"經(jīng)度:%3.5f\n緯度:%3.5f",newLocation.coordinate.latitude,newLocation.coordinate.longitude]);
    
    // 獲取當(dāng)前所在的城市名
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    //根據(jù)經(jīng)緯度反向地理編譯出地址信息
    [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *array, NSError *error)
     {
         if (array.count > 0) {
             
             CLPlacemark *placemark = [array objectAtIndex:0];
             
             //獲取城市
             NSString *city = placemark.locality;
             if (!city) {
                 //四大直轄市的城市信息無法通過locality獲得，只能通過獲取省份的方法來獲得（如果city為空蒲肋，則可知為直轄市）
                 city = placemark.administrativeArea;
             }
             
             NSLog(@"city = %@", city);
             NSLog(@"dic = %@",placemark.addressDictionary);

         } else if (error == nil && [array count] == 0) {
             
             NSLog(@"No results were returned.");
             
         } else if (error != nil) {
             
             NSLog(@"An error occurred = %@", error);
             
         }
                  
     }];
    
    //系統(tǒng)會一直更新數(shù)據(jù)蘑拯，直到選擇停止更新，因為我們只需要獲得一次經(jīng)緯度即可兜粘，所以獲取之后就停止更新
    [manager stopUpdatingLocation];
    
}

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
    
    [manager stopUpdatingLocation];

    NSString *errorString;
    NSString *alterTitle;
    NSLog(@"Error: %@",[error localizedDescription]);

    switch([error code]) {
        case kCLErrorDenied:
            //Access denied by user
            errorString = @"請在系統(tǒng)設(shè)置中開啟定位服務(wù)\n(設(shè)置>隱私>定位服務(wù))";
            alterTitle  = @"定位服務(wù)未開啟";
            break;
        case kCLErrorNetwork:
            //Probably temporary...
            errorString = @"網(wǎng)絡(luò)未開啟,請檢查網(wǎng)絡(luò)設(shè)置";
            alterTitle  = @"提示";
            break;
        default:
            errorString = @"發(fā)生位置錯誤";
            alterTitle  = @"提示";
            break;
    }
    
    UIAlertView *locationFailAlert = [[UIAlertView alloc] initWithTitle:alterTitle message:errorString delegate:self cancelButtonTitle:@"知道了" otherButtonTitles:nil, nil];
    [locationFailAlert show];
}

注意事項：

1申窘、用戶隱私的保護

在iOS8中，定位服務(wù)發(fā)生了變化孔轴，需要用戶授權(quán)剃法。

在工程info.plist文件中添加下面值：

<key>NSLocationUsageDescription</key>
<string>需要您的同意,才能訪問位置</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>需要您的同意,才能在使用期間訪問位置</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>需要您的同意,才能始終訪問位置</string>

2、獲取應(yīng)用當(dāng)前的定位服務(wù)狀態(tài)

// 確定用戶的位置服務(wù)是否啟用  
[CLLocationManager locationServicesEnabled]

// 位置服務(wù)是在設(shè)置中禁用 
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied) {

}