//

//  ViewController.m

//

//

//  Created by  on 16/4/2.

//  Copyright © 2016年 . All rights reserved.

//

#import "ViewController.h"

#import <MapKit/MapKit.h>

@interface ViewController ()<MKMapViewDelegate,UISearchBarDelegate>

{

    UISearchBar * searchBar1 ;

    MKMapView * mapview;

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

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

    

    //地图初始化

    mapview = [[MKMapView alloc]initWithFrame:CGRectMake(0, 80, self.view.frame.size.width, self.view.frame.size.height)];

    //设置地图类型

    mapview.mapType = MKMapTypeStandard ;

    //设置代理

    mapview.delegate = self;

    //设置地图 显示用户位置  可以滚动  可以粘合  可以缩放  不可旋转

    mapview.showsUserLocation = YES;

    mapview.rotateEnabled = NO;

    mapview.scrollEnabled = YES;

    mapview.zoomEnabled = YES;

    mapview.pitchEnabled = YES;

    //添加子视图

    [self.view addSubview:mapview];

    

    //初始化搜索条

    searchBar1 = [[UISearchBar alloc]initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, 60)];

    searchBar1.delegate = self;

//    searchBar1.text = @"北京市动物园";

    searchBar1.placeholder = @"请输入地址";

//    searchBar1.showsBookmarkButton = YES;

//    searchBar1.showsCancelButton = YES;

    [self.view addSubview:searchBar1];

 

}

//用户在搜索框中输入内容的时候   改变按钮的名字  变成“搜索”

-(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar

{

    searchBar1.showsCancelButton = YES;

    for(id cc in [searchBar1.subviews[0] subviews])

    {

        if ([cc isKindOfClass:[UIButton class]]) {

            

            UIButton * btn = (UIButton *)cc;

            [btn setTitle:@"搜索" forState:UIControlStateNormal];

        }

    }

}

//

// 当用户单击“取消”按钮时激发该方法

// 由于我们重定义了该控件的外观——将取消按钮的文本改成了“搜索”，因此单击取消按钮也执行搜索

-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar

{

    [searchBar1 resignFirstResponder];

    NSString * str = searchBar1.text;

    [self GotoLocation:str];

}

// 当用户单击虚拟键盘上的“搜索”按钮时激发该方法

-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar

{

    [searchBar1 resignFirstResponder];

    NSString * str = searchBar1.text;

    if (str.length > 0) {

        [self GotoLocation:str];

    }else

    {

        NSLog(@"地址错误");

    }

}

//自己定义的方法  用来跳转至相应地方

-(void)GotoLocation:(NSString *)address

{

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

    [geocoder geocodeAddressString:address completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {

        

        if (placemarks.count >0 && error == nil) {

            

            CLPlacemark * placemark = [placemarks lastObject];

            CLLocation * location = placemark.location;

            

            dispatch_async(dispatch_get_main_queue(), ^{

                

                //跳至指定位置

                [mapview setRegion:MKCoordinateRegionMake(location.coordinate, MKCoordinateSpanMake(0.01, 0.01))];

                

                //锚点

                MKPointAnnotation * point = [[MKPointAnnotation alloc]init];

                point.coordinate = location.coordinate;

                point.title = placemark.name;

                point.subtitle = [NSString stringWithFormat:@"%@-%@-%@-%@",placemark.country,placemark.administrativeArea,placemark.locality,placemark.subLocality];

                

                [mapview addAnnotation:point];

                [mapview selectAnnotation:point animated:YES];

                

            });

            

        }else{

            NSLog(@"没有拼配的数据");

        }

        

    }];

    

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end