地图（省会定位）

//
// ViewController.m
// MapDemo
//
// Created by 森屿猫 on 2018/10/11.
// Copyright © 2018 森屿猫. All rights reserved.
//

#import “ViewController.h”
#import “MapViewcontroller.h”
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
{
NSArray *_provinceArr;
}

@end

@implementation ViewController

(void)viewDidLoad {
[super viewDidLoad];
//给一个初始值
_provinceArr = @[@“河北石家庄”,@“北京”,@“山西太原”,@“山东济南”,@“陕西西安”];

}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return _provinceArr.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *identifier = @"identifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (cell == nil) {
    cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
}
cell.textLabel.text = _provinceArr[indexPath.row];
return cell;

}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

//得到选中cell的对应文本
NSString *pro = _provinceArr[indexPath.row];

MapViewcontroller *mapVC = [[MapViewcontroller alloc]init];
mapVC.passProvince = pro;
[self.navigationController pushViewController:mapVC animated:YES];

}
@end
//
// MapViewcontroller.h
// MapDemo
//
// Created by 森屿猫 on 2018/10/11.
// Copyright © 2018 森屿猫. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface MapViewcontroller : UIViewController
@property(nonatomic,copy)NSString *passProvince;
@end

NS_ASSUME_NONNULL_END
//
// MapViewcontroller.m
// MapDemo
//
// Created by 森屿猫 on 2018/10/11.
// Copyright © 2018 森屿猫. All rights reserved.
//

#import “MapViewcontroller.h”
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>

@interface MapViewcontroller ()<CLLocationManagerDelegate,MKMapViewDelegate>
@property(nonatomic,strong)MKMapView *mapview;
@property(nonatomic,strong)CLLocationManager *locManager;//地理位置管理者
@end

@implementation MapViewcontroller

(void)viewDidLoad {
[super viewDidLoad];

//获取当前位置
self.navigationItem.title = self.passProvince;
self.mapview = [[MKMapView alloc]initWithFrame:self.view.frame];
self.mapview.mapType = MKMapTypeHybrid;//设置平面+卫星的混合样式
self.mapview.mapType = MKMapTypeStandard;
[self.view addSubview:self.mapview];

//获取当前位置的按钮
UIButton *currentbtn = [UIButton buttonWithType:UIButtonTypeCustom];
currentbtn.frame = CGRectMake(10,self.view.frame.size.height - 80,40,40);
[currentbtn setTitle:@“定位” forState:UIControlStateNormal];
[currentbtn setBackgroundColor:[UIColor blueColor]];
[currentbtn addTarget:self action:@selector(currentBtnDidPress:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:currentbtn];

//实例化位置管理对象
self.locManager = [[CLLocationManager alloc]init];
self.locManager.delegate = self;//设置代理

//添加右侧按钮用于获取省会位置
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@“省会定位” style:UIBarButtonItemStylePlain target:self action:@selector(getProvinceLocation:)];

//申请用户授权
[self.locManager requestWhenInUseAuthorization];

}
//获取h省会位置
-(void)getProvinceLocation:(id)sender{
CLGeocoder *g = [[CLGeocoder alloc]init];
//地址解析，将这样一个地址字符串转换为位置的经纬度
[g geocodeAddressString:self.passProvince completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//随便获取一个位置展现在地图上
CLPlacemark *place = [placemarks lastObject];
//获取位置
CLLocation *loc = place.location;
//获取经纬度
CLLocationCoordinate2D coor = loc.coordinate;

    //定义矛点 添加到地图上
    MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
    //
    annotation.coordinate = coor;
    //
    dispatch_async(dispatch_get_main_queue(), ^{
        MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(coor, 800, 800);
        //显示区域变化
        [self.mapview setRegion:region animated:YES];
        [self.mapview addAnnotation:annotation];
    });
    
}];

}
//获取按钮触发
-(void)currentBtnDidPress:(id)sender{
//开始获取位置信息调用此方法后协议中的方法才会执行
[self.locManager startUpdatingLocation];
}

#pragma mark ---- CLLocationManagerDelegat ----
//获取当前位置信息后触发回调方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{

//获取当前位置
CLLocation *curLoc = [locations lastObject];
//获取经纬度
CLLocationCoordinate2D curCoor = curLoc.coordinate;
NSLog(@"经度:%g,纬度:%g",curCoor.longitude,curCoor.latitude);
manager.delegate = nil;

//让地图区域变小
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(curCoor, 300, 300);
[self.mapview setRegion:region animated:YES];

//地址解析
CLGeocoder *geocoder = [[CLGeocoder alloc]init];
[geocoder reverseGeocodeLocation:curLoc completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
    //获取其中一个
    CLPlacemark *place = [placemarks lastObject];
    
        
    //做一个大头针 弄在当前位置
    MKPointAnnotation *point = [[MKPointAnnotation alloc]init];
    point.title = [NSString stringWithFormat:@"我的位置:"];
    point.coordinate = curCoor;//大头针位置
    [self.mapview addAnnotation:point];
   
}];

}

//用于设置矛点试图的方法

(nullable MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id )annotation;{
//做一个静态字符串，作为静态父用标志
static NSString *iden = @“pin”;
//congmapview可复用的矛点中找一块可复用的内存
MKPinAnnotationView *pin = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:iden forAnnotation:annotation];

//如果可复用内存为空，实例化新内存，并给他添加复用标志
if (pin == nil) {
pin = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:iden];
}
//设置掉落效果
pin.animatesDrop = YES;
//设置泡泡效果
pin.canShowCallout = YES;
return pin;
}
/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/

@end
在这里插入图片描述

地图 （省会定位）

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