手機定位DEMO

時間 2019-12-07

標籤手機定位 demo 欄目系統網絡简体版

原文原文鏈接

#import "ViewController.h"git

#import <MapKit/MapKit.h>數組

#import <CoreLocation/CoreLocation.h>app

// 獲取當前版本號ide

#define kCURRENTVERSION [[[UIDevice currentDevice] systemVersion] floatValue]atom

@interface ViewController ()<CLLocationManagerDelegate, UIAlertViewDelegate, UITextFieldDelegate>spa

@property (nonatomic, strong) CLLocationManager *locManager; // 獲取當前經緯度code

@property (nonatomic, strong) CLGeocoder *geocoder; // 經過經緯度轉換成地址orm

@property (strong, nonatomic) IBOutlet UILabel *longitudeLabel; // 經度事件

@property (strong, nonatomic) IBOutlet UILabel *latitudeLabel; // 緯度ci

@property (strong, nonatomic) IBOutlet UILabel *addressLabel; // 詳細地址

@property (strong, nonatomic) IBOutlet UILabel *stateLabel; // 省份

- (IBAction)getAction:(id)sender; // 獲取當前經緯度的按鈕

@property (strong, nonatomic) IBOutlet UITextField *addressTextField; // 輸入地址的textfield

- (IBAction)addressInput:(id)sender; // 根據地址轉換成經緯度按鈕

@end

@implementation ViewController

#pragma mark 實現懶加載

- (CLLocationManager *)locManager

{

if (_locManager == nil) {

self.locManager = [[CLLocationManager alloc] init];

self.locManager.delegate = self;

}

return _locManager;

}

- (CLGeocoder *)geocoder

{

if (_geocoder == nil) {

self.geocoder = [[CLGeocoder alloc] init];

}

return _geocoder;

}

#pragma mark 頁面消失的時候關閉定位

- (void)viewWillDisappear:(BOOL)animated

{

[super viewWillDisappear:animated];

// 關閉定位

[self.locManager stopUpdatingLocation];

}

- (void)viewDidLoad {

[super viewDidLoad];

// 初始化設置

self.longitudeLabel.textAlignment = NSTextAlignmentCenter;

self.latitudeLabel.textAlignment = NSTextAlignmentCenter;

self.addressLabel.numberOfLines = 0;

self.addressTextField.delegate = self;

}

- (void)requestWhenInUseAuthorization

{

self.locManager.desiredAccuracy = kCLLocationAccuracyBest;

self.locManager.distanceFilter = 10;

#pragma mark ------------如下二選一---------------

[self.locManager requestWhenInUseAuthorization];//當程序運行的時候獲取定位權限

//[self.locManager requestAlwaysAuthorization]; // 程序一直獲取定位權限

}

//協議中的方法，做用是每當位置發生更新時會調用的委託方法

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations

{

// 獲取數組第一個元素

CLLocation *loc = [locations firstObject];

// 獲取經度

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

// 獲取緯度

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

// 將經緯度轉換成地址

[self.geocoder reverseGeocodeLocation:loc completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {

// 判斷數組是否爲空

if (placemarks.count > 0)

{

// 數組不爲空

CLPlacemark *placemark = [placemarks objectAtIndex:0];

NSDictionary *dic = placemark.addressDictionary;

// 轉換成詳細地址

[self getAddress:dic];

//獲取城市

NSString *city = placemark.locality;

if (!city) {

//四大直轄市的城市信息沒法經過locality得到，只能經過獲取省份的方法來得到（若是city爲空，則可知爲直轄市）

city = placemark.administrativeArea;

}

// 將省份顯示

self.stateLabel.text = city;

}

// 地址獲取失敗

else if (error == nil && [placemarks count] == 0)

{

NSLog(@"No results were returned.");

}

else if (error != nil)

{

NSLog(@"An error occurred = %@", error);

}

}];

[self.locManager stopUpdatingLocation];

}

#pragma mark 獲取當前詳細地址

- (void) getAddress:(NSDictionary *) addressDic

{

//NSString *state=[addressDic objectForKey:@"State"]; // 省份

NSString *city=[addressDic objectForKey:@"City"]; // 城市

NSString *subLocality=[addressDic objectForKey:@"SubLocality"]; // 區

NSString *street=[addressDic objectForKey:@"Street"]; // 街道

NSString *address = [[city stringByAppendingString:subLocality] stringByAppendingString:street]; // 拼接地址

self.addressLabel.text = address; // 顯示地址

}

//當位置獲取或更新失敗會調用的方法

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

{

NSString *errorMsg = nil; // 做爲提示框的信息

if ([error code] == kCLErrorDenied) {

errorMsg = @"訪問被拒絕,請容許應用獲取定位權限";

}

if ([error code] == kCLErrorLocationUnknown) {

errorMsg = @"獲取位置信息失敗";

}

// 建立提示框

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"定位失敗" message:errorMsg preferredStyle:(UIAlertControllerStyleAlert)];

UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"確認" style:(UIAlertActionStyleDefault) handler:^(UIAlertAction * _Nonnull action) {

// 當應用無權限獲取位置信息從新獲取

[self requestWhenInUseAuthorization];

}];

UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:(UIAlertActionStyleCancel) handler:nil];

[alertController addAction:cancelAction];

[alertController addAction:okAction];

[self presentViewController:alertController animated:YES completion:nil];

}

#pragma mark 定位失敗提示

- (void) showAlert:(NSString *) notice

{

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"定位失敗" message:notice preferredStyle:(UIAlertControllerStyleAlert)];