該app為應用的功能為用iPhone 顯示你現在的位置

現版本 SDK 8.4 Xcode

運行Xcode 選擇 Create a new?Xcode project ->Single View Application 命名?WhereAmI

(1) 點擊文件夾WhereAmI -> General->Linked Frameworks and Libraries ->?"+"-> ?搜索?CoreLocation.framework ->add

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(2) ?打開 ViewController.h?文件,加入下面代碼

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#import <UIKit/UIKit.h>

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#import <CoreLocation/CoreLocation.h>

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#import <CoreLocation/CLLocationManagerDelegate.h>

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@interface ViewController : UIViewController <CLLocationManagerDelegate>{

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? ? IBOutlet UITextField *altitude;

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? ? IBOutlet UITextField *latitude;

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? ? IBOutlet UITextField *longitude;

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? ? CLLocationManager *locmanager;

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? ? BOOL wasFound;

}

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-(IBAction)update:(id)sender;

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-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *) oldLocation ;

-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *) error;

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@end

(3) ?打開 ViewController.m 文件,加入下面代碼

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#import "ViewController.h"

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@interface ViewController ()

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@end

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@implementation ViewController

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-(IBAction)update:(id)sender{

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? ? locmanager = [[CLLocationManager alloc]init];

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? ? [locmanager setDelegate:self];

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? ? [locmanager setDesiredAccuracy:kCLLocationAccuracyBest];

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? ? locmanager.distanceFilter=10;

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? ? NSString *iOSVersion=[UIDevice currentDevice].systemVersion;

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? ? //NSLog(@"%@",iOSVersion);

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? ? if ((int)iOSVersion >= 8) {

? ? ? ? [locmanager requestWhenInUseAuthorization];//使用程序其間允許訪問位置數據（iOS8定位需要）

? ? }

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? ? [locmanager startUpdatingLocation];

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}

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-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{

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? ? if(wasFound)return;

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? ? wasFound = YES;

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? ? CLLocationCoordinate2D loc = [newLocation coordinate];

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? ? latitude.text = [NSString stringWithFormat:@"%f",loc.latitude];

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? ? longitude.text = [NSString stringWithFormat:@"%f",loc.longitude];

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? ? altitude.text = [NSString stringWithFormat:@"%f",newLocation.altitude];

}

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-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{

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}

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- (void)viewDidLoad {

? ? [super viewDidLoad];

? ? // Do any additional setup after loading the view, typically from a nib.

}

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- (void)didReceiveMemoryWarning {

? ? [super didReceiveMemoryWarning];

? ? // Dispose of any resources that can be recreated.

}

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@end

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(3) 設置info.plist

點擊info.plist，在右側添加NSLocationWhenInUseUsageDescription和NSLocationAlwaysUsageDescription?

將 Value設置為YES

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(4) UIView 界面設置

?點擊Main.storyboard

?加入三個Label?在 Attributes 下, Text 內填上"經度"，“緯度”，“海拔”；

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加入 三個Text Field用于顯示?"經度"，“緯度”，“海拔”；

鼠標右擊Text Field控件?移動鼠標在"Referencing Outlets" 后面圓圈上; 圓圈變為(+);?拖動直線連接到"view controller";
放開鼠標選擇鍵出現 "longitude","latitude","altitude"; 對應著"經度"，“緯度”，“海拔”三個Text Field ，分別選上它。

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選擇： File -> Save

最后在 xCode 選擇 Build and then Running

(5)真機調試效果圖

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本文源于網上博客教程，經過本人修改和測試。原blog地址?http://blog.sina.com.cn/s/blog_5fae23350100e5fi.html

轉載于:https://www.cnblogs.com/huaixu/p/4694902.html

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