ios调用系统导航

#import "ViewController.h"

#import <MapKit/MapKit.h>

@interface ViewController ()

@property(nonatomic,weak)UITextField*destination;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

UITextField *field=[[UITextField alloc]init];

field .frame=CGRectMake(10, 10, 100, 30);

[field becomeFirstResponder];

[self.view addSubview:field];

self.destination=field;

UIButton*btn= [UIButton buttonWithType:UIButtonTypeContactAdd];

btn.frame=CGRectMake(120, 10, 50, 20);

[btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:btn];

}

-(void)btnClick

{

CLGeocoder *geo=[[CLGeocoder alloc]init];

[geo geocodeAddressString:self.destination.text completionHandler:^(NSArray *placemarks, NSError *error) {

//地理编码后拿到地标

CLPlacemark *pm=[placemarks firstObject];

//创建MKPlacemark

MKPlacemark *mkp=[[MKPlacemark alloc]initWithPlacemark:pm];

//创建目的地对象

MKMapItem *destination=[[MKMapItem alloc]initWithPlacemark:mkp];

//获取用户当前的item

MKMapItem *current=[MKMapItem mapItemForCurrentLocation];

//2.开启导航//设置地图出行方式,设置地图类型,设置是否显示交通状况

NSDictionary *operation=@{

MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving,

MKLaunchOptionsMapTypeKey:@0,

MKLaunchOptionsShowsTrafficKey:@NO};

[MKMapItem openMapsWithItems:@[current,destination] launchOptions:operation];

}];

}

@end