地理编码以及反地理编码

//  地理编码以及反地理编码12-23
//
//  Created by dc004 on 15/12/23.
//  Copyright © 2015年 gang. All rights reserved.
//
//搜索的所有结果都是在中国境内的，因为苹果在中国的地理服务商是高德地图
#import "ViewController.h"
//引入头文件
#import <CoreLocation/CoreLocation.h>
@interface ViewController ()
{
    CLGeocoder *_geoCoder;
    UILabel *label;
    UILabel *label1;
    UILabel *label2;
    UILabel *label3;
    UILabel *label4;
    UILabel *label5;
    UILabel *label6;
    UILabel *label7;
    UILabel *label8;
    UILabel *label9;
    UITextField *text1;
    UITextField *text2;
    UIButton *button;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    _geoCoder = [[CLGeocoder alloc]init];
    button = [[UIButton alloc]initWithFrame:CGRectMake(185, 500, 80, 40)];
    [button setTitle:@"查询" forState:UIControlStateNormal];
    [button setTitleColor:[UIColor brownColor] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(consult) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
    label = [[UILabel alloc]initWithFrame:CGRectMake(75, 100, 300, 50)];
    label.backgroundColor = [UIColor colorWithRed:0 green:1 blue:1 alpha:0.8];
    label.numberOfLines = 3;
    label.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label];
    
    label3 = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, 75, 50)];
    label3.text = @"地址:";
    label3.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label3];
    label4 = [[UILabel alloc]initWithFrame:CGRectMake(0, 160, 75, 50)];
    label4.text = @"经度:";
    label4.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label4];
    label5 = [[UILabel alloc]initWithFrame:CGRectMake(0, 220, 75, 50)];
    label5.text = @"纬度:";
    label5.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label5];


    label1 = [[UILabel alloc]initWithFrame:CGRectMake(75, 160, 300, 50)];
    label1.backgroundColor = [UIColor colorWithRed:0 green:1 blue:1 alpha:0.8];
    label1.numberOfLines = 3;
    label1.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label1];
    label2 = [[UILabel alloc]initWithFrame:CGRectMake(75, 220, 300, 50)];
    label2.backgroundColor = [UIColor colorWithRed:0 green:1 blue:1 alpha:0.8];
    label2.numberOfLines = 3;
    label2.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label2];
    label6 = [[UILabel alloc]initWithFrame:CGRectMake(75, 280, 300, 50)];
    label6.backgroundColor = [UIColor colorWithRed:0 green:1 blue:1 alpha:0.8];
    label6.numberOfLines = 3;
    label6.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label6];
    label7 = [[UILabel alloc]initWithFrame:CGRectMake(0, 280, 75, 50)];
    label7.text = @"海拔:";
    label7.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label7];
    label8 = [[UILabel alloc]initWithFrame:CGRectMake(0, 380, 75, 50)];
    label8.text = @"经度:";
    label8.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label8];
    label9 = [[UILabel alloc]initWithFrame:CGRectMake(0, 440, 75, 50)];
    label9.text = @"纬度:";
    label9.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label9];
    text1 = [[UITextField alloc]initWithFrame:CGRectMake(75, 380, 300, 50)];
    text1.backgroundColor = [UIColor colorWithRed:0 green:1 blue:1 alpha:0.8];
    text1.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:text1];
    text2 = [[UITextField alloc]initWithFrame:CGRectMake(75, 440, 300, 50)];
    text2.backgroundColor = [UIColor colorWithRed:0 green:1 blue:1 alpha:0.8];
    text2.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:text2];


    //地理编码。。。传入的信息是地名
//    [self getCoordinateByAddress:@"海口市秀英区"];
    
    
    //反地理编码。。。传入的信息是坐标（经纬度）
    [self getAddressByLatitude:[text1.text floatValue] longitude:[text2.text floatValue]];
}
//通过地名
#pragma mark 根据地名确定地理坐标
-(void)getCoordinateByAddress : (NSString *)address{
    [_geoCoder geocodeAddressString:address completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        //取得地标，地标中储存了详细的地址信息。注意：一个地名可以搜索出多个地址
        CLPlacemark *placemark = [placemarks firstObject];
        NSLog(@"%@",placemark);
        //剖析地标
        //位置
        CLLocation *location = placemark.location;
        NSLog(@"位置%@",location);
        CLLocationCoordinate2D coordinate = location.coordinate;
        label1.text =[NSString stringWithFormat:@"%.2f",coordinate.latitude];
        label2.text =[NSString stringWithFormat:@"%.2f",coordinate.longitude];
        label6.text = [NSString stringWithFormat:@"%.2f",location.altitude];
        //区域
        CLRegion *region = placemark.region;
        NSLog(@"区域%@",region);
        //详细地址
        NSDictionary *addressDict = placemark.addressDictionary;
        NSLog(@"%@",addressDict);
        label.text = addressDict[@"Name"];
    }];
    
    
}
//通过坐标
#pragma mark 根据坐标确定地名
-(void)getAddressByLatitude: (CLLocationDegrees)latitude longitude : (CLLocationDegrees)longitude{
   //通过经纬度创建位置信息
    CLLocation *location = [[CLLocation alloc]initWithLatitude:latitude longitude:longitude];
    [_geoCoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        //获取地标
        CLPlacemark *placemark = [placemarks firstObject];
        //打印地标中的地理信息
        NSLog(@"%@",placemark.addressDictionary);
        label.text =placemark.addressDictionary[@"FormattedAddressLines"][0];
    }];
    
    
}
-(void)consult{
    [self getAddressByLatitude:[text1.text floatValue]longitude:[text2.text floatValue]];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end