开发环境：
IDE：Xcode Version 6.1 (6A1052d)
iOS Simulator：iPhone 5/5S/6
改之前的代码如下：
// ViewController.m
// mapKit-2
//
// Created by zhanglongqing on 15/7/30.
// Copyright (c) 2015年 klone. All rights reserved.
//
# import "ViewController.h"
# import <MapKit/MapKit.h>
@interface ViewController ()<MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.mapView.delegate = self;
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
self.mapView.showsUserLocation = YES;
}
// 获取用户位置
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation {
NSLog(@"获取用户位置");
}
// 地图加载失败时的 error 信息
- (void)mapViewDidFailLoadingMap:(MKMapView *)mapView withError:(NSError *)error {
NSLog(@"%@",error);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
之前定位的时候遇到了 CLLocationManagerDelegate 的问题，那个是不报错的情况下单纯的不调用代理方法而已。不过，这次的错误 Diao，不但不调用 MKMapViewDelegate 方法，它还报错，提示信息如下：
“Trying to start MapKit location updates without prompting for location authorization. Must call -[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager requestAlwaysAuthorization] first.”
有提示解决就容易多了，可以参照之前一篇的方法在 info.plist 文件中添加了 NSLocationAlwaysUsageDescription NSLocationWhenInUseUsageDescription ，然后调用 [self.locationManager requestAlwaysAuthorization] 或者 [self.locationManager requestWhenInUseAuthorization] ，也可以对当前 iOS 平台进行一下判断
if ([CLLocationManager locationServicesEnabled]) {
方法体;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
[self.locationManager requestWhenInUseAuthorization];
}
}
修改后的 viewdidLoad
- (void)viewDidLoad {
[super viewDidLoad];
if ([CLLocationManager locationServicesEnabled]) {
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
self.mapView.delegate = self;
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
if ([[[UIDevice currentDevice] systemVersion]floatValue] >= 8.0) {
[self.locationManager requestWhenInUseAuthorization];
}
}
}
或者
- (void)viewDidLoad {
[super viewDidLoad];
self.locationManager = [[CLLocationManager alloc] init];
[self.locationManager requestAlwaysAuthorization];
self.locationManager.delegate = self;
self.mapView.delegate = self;
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
self.mapView.showsUserLocation = YES;
[self.locationManager startUpdatingLocation];
}
这样基本上就解决问题了。。。