1.倒入頭文件
#import
2.實現定位協議CLLocationManagerDelegate
3.定義定位屬性
@property(nonatomic,retain)CLLocationManager *locationManager;
4.開始定位
- (void)locate
{
// 判斷定位操作是否被允許
if([CLLocationManager locationServicesEnabled]) {
self.locationManager = [[CLLocationManager alloc] init] ;
self.locationManager.delegate = self;
}else {
//提示用戶無法進行定位操作
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:
@"提示" message:@"定位不成功 ,請確認開啟定位" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"確定", nil];
[alertView show];
}
// 開始定位
[self.locationManager startUpdatingLocation];
}
5.實現定位協議回調方法
#pragma mark - CoreLocation Delegate
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
//此處locations存儲了持續更新的位置坐標值,取最後一個值為最新位置,如果不想讓其持續更新位置,則在此方法中獲取到一個值之後讓locationManager stopUpdatingLocation
CLLocation *currentLocation = [locations lastObject];
// 獲取當前所在的城市名
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
//根據經緯度反向地理編譯出地址信息
[geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *array, NSError *error)
{
if (array.count > 0)
{
CLPlacemark *placemark = [array objectAtIndex:0];
//將獲得的所有信息顯示到label上
NSLog(@"%@",placemark.name);
//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,則可知為直轄市)
city = placemark.administrativeArea;
}
self.cityName = city;
}
else if (error == nil && [array count] == 0)
{
NSLog(@"No results were returned.");
}
else if (error != nil)
{
NSLog(@"An error occurred = %@", error);
}
}];
//系統會一直更新數據,直到選擇停止更新,因為我們只需要獲得一次經緯度即可,所以獲取之後就停止更新
[manager stopUpdatingLocation];
}
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error {
if (error.code == kCLErrorDenied) {
// 提示用戶出錯原因,可按住Option鍵點擊 KCLErrorDenied的查看更多出錯信息,可打印error.code值查找原因所在
}
}