1.导入系统框架
/**
* 界面效果1 实现定位到输入的地址，并且提示出地址的经纬度
*/
2.viewcontroller.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface ViewController : UIViewController
@property (strong, nonatomic) IBOutlet UISearchBar *searchBar;
@property (strong, nonatomic) IBOutlet MKMapView *mapView;
@property (strong, nonatomic) CLGeocoder *geoCoder;
@end
3.viewcontroller.m
@interface ViewController ()<UISearchBarDelegate>
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.geoCoder = [[CLGeocoder alloc]init];
self.mapView.zoomEnabled = YES;
self.mapView.rotateEnabled = NO;
self.mapView.scrollEnabled = YES;
self.mapView.showsUserLocation = YES;
self.mapView.mapType = MKMapTypeStandard;
self.searchBar.text = @"*";
self.searchBar.delegate = self;
}
//点击搜索
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
//调用searchBar方法进行搜索
[self startSearch:searchBar];
}
//点击取消
-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
//调用searchBar方法进行搜索
[self startSearch:searchBar];
}
//执行搜索
-(void)startSearch:(UISearchBar *)searchBar
{
//关闭searchBar的虚拟键盘
[self.searchBar resignFirstResponder];
NSString *searchText = self.searchBar.text;
if (searchText != nil && searchText.length>0) {
[self locateAt:searchText];
}
}
//输入文本时
-(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
//显示取消按钮
searchBar.showsCancelButton = YES;
//通过遍历找到取消按钮，并将取消按钮的文本设为搜索
for (id cc in [searchBar.subviews[0]subviews]) {
if ([cc isKindOfClass:[UIButton class]]) {
UIButton *btn = (UIButton *)cc;
[btn setTitle:@"搜索" forState:UIControlStateNormal];
}
}
}
//将字符串地址转换为经纬度，并执行定位
-(void)locateAt:(NSString *)add
{
[self.geoCoder geocodeAddressString:add
completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks,
NSError * _Nullable error) {
if ([placemarks count]>0 && error == nil) {
NSLog(@"搜索到匹配%lu条地址数据",(unsigned long)placemarks.count);
//处理第一个地址
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(@"经度 = :%f",placemark.location.coordinate.longitude);
NSLog(@"纬度 = :%f",placemark.location.coordinate.latitude);
NSLog(@"国家 = %@",placemark.country);
NSLog(@"邮编 = %@",placemark.postalCode);
NSLog(@"位置 = %@",placemark.locality);
NSString *msg = [NSString stringWithFormat:@"经度 = %f,纬度 =
%f",placemark.location.coordinate.longitude,placemark.location.coordinate.latitude];
[[[UIAlertView alloc]initWithTitle:@"信息" message:msg delegate:self
cancelButtonTitle:@"确定" otherButtonTitles: nil]show];
//设置地图显示的范围
MKCoordinateSpan span;
//地图显示范围越小，细节越清楚
span.latitudeDelta = 0.0001;
span.longitudeDelta = 0.0001;
MKCoordinateRegion region = {placemark.location.coordinate,span};
//设置地图中心位置为搜索到的位置
[self.mapView setRegion:region];
//创建一个，该对象将作为地图描点
MKPointAnnotation *point = [[MKPointAnnotation alloc]init];
//设置地图锚点的坐标
point.coordinate = placemark.location.coordinate;
//设置地图锚点的标题
point.title = placemark.name;
//设置地图锚点的副标题
point.subtitle = [NSString
stringWithFormat:@"%@-%@-%@-%@",placemark.country,placemark.administrativeArea,placemark.locality,placemark.subLocality
];
//将地图锚点添加到地图上
[self.mapView addAnnotation:point];
//选中指定锚点
[self.mapView selectAnnotation:point animated:YES];
}
else
{
NSLog(@"无搜索结果");
}
}];
}
@end
/**
* 界面效果2 点击界面1的解析按钮跳转到界面2
* 实现输入地址，解析到经纬度
* 输入经纬度，显示详细地址
*/
4.界面2的.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface jieXiViewController : UIViewController
@property (strong, nonatomic) IBOutlet UITextField *dizhijiexi;
@property (strong, nonatomic) IBOutlet UITextField *jingdu;
@property (strong, nonatomic) IBOutlet UITextField *weidu;
@property (strong, nonatomic) IBOutlet UITextView *showTV;
- (IBAction)jiexi:(id)sender;
- (IBAction)fanjeixi:(id)sender;
@property (strong, nonatomic) CLGeocoder* geocoder;
@end
5.界面2的.m
@interface jieXiViewController ()
@end
@implementation jieXiViewController
- (void)viewDidLoad {
[super viewDidLoad];
//创建地址解析器
self.geocoder = [[CLGeocoder alloc]init];
}
- (IBAction)jiexi:(id)sender {
// 获取用户输入的地址字符串
NSString *inputAdd = self.dizhijiexi.text;
if (inputAdd != nil && inputAdd.length>0) {
[self.geocoder geocodeAddressString:inputAdd
completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks,
NSError * _Nullable error) {
// 如果解析结果的集合元素的个数大于1，表明解析得到了经度、纬度信息
if (placemarks.count > 0)
{
// 只处理第一个解析结果，实际项目中可使用列表让用户选择
CLPlacemark* placemark = placemarks[0];
CLLocation* location = placemark.location;
self.showTV.text = [NSString stringWithFormat:
@"%@的经度为：%g，纬度为：%g" , inputAdd ,
location.coordinate.longitude ,
location.coordinate.latitude ];
}
// 没有得到解析结果。
else
{
// 使用UIAlertView提醒用户
[[[UIAlertView alloc] initWithTitle:@"提醒"
message:@"您输入的地址无法解析" delegate:nil
cancelButtonTitle:@"确定" otherButtonTitles: nil]
show];
}
}];
}
}
- (IBAction)fanjeixi:(id)sender {
NSString* longitudeStr = self.jingdu.text;
NSString* latitudeStr = self.weidu.text;
if(longitudeStr != nil && longitudeStr.length > 0
&& latitudeStr != nil && latitudeStr.length > 0)
{
// 将用户输入的经度、纬度封装成CLLocation对象
CLLocation* location = [[CLLocation alloc]
initWithLatitude:[latitudeStr floatValue]
longitude:[longitudeStr floatValue]];
[self.geocoder reverseGeocodeLocation:location completionHandler:
^(NSArray *placemarks, NSError *error)
{
// 如果解析结果的集合元素的个数大于1，表明解析得到了经度、纬度信息
if (placemarks.count > 0)
{
// 只处理第一个解析结果，实际项目可使用列表让用户选择
CLPlacemark* placemark = placemarks[0];
// 获取详细地址信息
NSArray* addrArray = [placemark.addressDictionary
objectForKey:@"FormattedAddressLines"];
// 将详细地址拼接成一个字符串
NSMutableString* addr = [[NSMutableString alloc] init];
for(int i = 0 ; i < addrArray.count ; i ++)
{
[addr appendString:addrArray[i]];
}
self.showTV.text = [NSString stringWithFormat:
@"经度：%g，纬度：%g的地址为：%@" ,
location.coordinate.longitude ,
location.coordinate.latitude , addr];
}
// 没有得到解析结果。
else
{
// 使用UIAlertView提醒用户
[[[UIAlertView alloc] initWithTitle:@"提醒"
message:@"您输入的地址无法解析" delegate:nil
cancelButtonTitle:@"确定" otherButtonTitles: nil]
show];
}
}];
}
}
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[self.view endEditing:YES];
}
@end