最近項目中要寫一個微信那種發送位置的功能。具體功能在于：
- 定位到目前位置
- 可定位目前位置附近的Poi
- 可自行搜尋目标位置，并展示附近的poi
- 選擇目前位置或者選擇目标位置進行發送
在這裡我還是要推薦下我自己建的iOS開發學習群：680565220，群裡都是學ios開發的，如果你正在學習ios ，小編歡迎你加入，今天分享的這個案例已經上傳到群檔案，大家都是軟體開發黨，不定期分享幹貨（隻有iOS軟體開發相關的），包括我自己整理的一份2018最新的iOS進階資料和進階開發教程
一.準備工作
1.首先去高德地圖官網下載下傳相關的SDK（如下圖）：
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2.按照高德地圖官網的步驟繼續添加所需要的依賴庫
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3.根據項目的bundleID前往高德地圖API中建立引用并申請相關的key
高德地圖應用管理背景
到這一步前期的準備工作基本差不多了，當然，我這寫的不是很具體，詳細的引入高德地圖SDK還需要
耐心按照高德地圖官網SDK一步步的去操作
二.代碼部分
1.初始化高德地圖SDK
在AppleDelegate中引入相關頭檔案，從高德地圖應用管理中找到該應用對用的key值，進行高德地圖SDK的初始化操作。直接貼代碼部分：
#import"AppDelegate.h"
#import"ViewController.h"
#import <AMapLocationKit/AMapLocationKit.h>
#import <AMapFoundationKit/AMapFoundationKit.h>
staticNSString*APIKey =@"a1500980e29b7ca7612a46c19e0d2e3a";
@interfaceAppDelegate()
@end
@implementationAppDelegate
- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
self.window = [[UIWindowalloc] initWithFrame:[UIScreenmainScreen].bounds];
[self.window makeKeyAndVisible];
self.window.rootViewController = [[UINavigationControlleralloc] initWithRootViewController:[ViewController new]];
[AMapServices sharedServices].apiKey = APIKey;
returnYES;
}
2.定位到使用者目前位置
在你需要定位的類中引入與地圖相關的頭檔案
初始化地圖view：
- (void)initMapView{
self.mapView = [[MAMapView alloc] initWithFrame:CGRectMake(0,64+44, SCREEN_WIDTH,300)];
self.mapView.delegate =self;
self.mapView.mapType = MAMapTypeStandard;
self.mapView.showsScale =NO;
self.mapView.showsCompass =NO;
self.mapView.showsUserLocation =YES;
[self.view addSubview:self.mapView];
UIButton*localButton = [UIButtonbuttonWithType:UIButtonTypeCustom];
localButton.backgroundColor = [UIColorredColor];
localButton.frame =CGRectMake(SCREEN_WIDTH -60,240,50,50);
[localButton addTarget:selfaction:@selector(localButtonAction) forControlEvents:UIControlEventTouchUpInside];
localButton.layer.cornerRadius =25;
localButton.clipsToBounds =YES;
[localButton setImage:[UIImageimageNamed:@"定位"] forState:UIControlStateNormal];
[self.mapView addSubview:localButton];
}
// 定位SDK
- (void)configLocationManager {
self.locationManager = [[AMapLocationManager alloc] init];
[self.locationManager setDelegate:self];
[self.locationManager setDesiredAccuracy:kCLLocationAccuracyHundredMeters];
//單次定位逾時時間
[self.locationManager setLocationTimeout:6];
[self.locationManager setReGeocodeTimeout:3];
}
開啟定位操作：
- (void)locateAction {
[selfshowHudInView:self.view hint:@"正在定位..."];
//帶逆地理的單次定位
[self.locationManager requestLocationWithReGeocode:YEScompletionBlock:^(CLLocation*location, AMapLocationReGeocode *regeocode,NSError*error) {
if(error) {
[selfshowHint:@"定位錯誤"yOffset:-180];
NSLog(@"locError:{%ld - %@};",(long)error.code,error.localizedDescription);
if(error.code == AMapLocationErrorLocateFailed) {
return;
}
}
//定位資訊
NSLog(@"location:%@", location);
if(regeocode)
{
[selfhideHud];
self.currentLocationCoordinate =CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude);
self.city = regeocode.city;
[selfshowMapPoint];
[selfsetCenterPoint];
self.request.location = [AMapGeoPoint locationWithLatitude:location.coordinate.latitude longitude:location.coordinate.longitude];
[self.mapSearch AMapPOIAroundSearch:self.request];
}
}];
}
定位成功之後展示大頭針到目前位置（如果一直不顯示大頭針，檢查一下自己是否導入了高德地圖的資源檔案）：
- (void)showMapPoint{
[_mapView setZoomLevel:15.1animated:YES];
[_mapView setCenterCoordinate:self.currentLocationCoordinate animated:YES];
}
- (void)setCenterPoint{
MAPointAnnotation * centerAnnotation = [[MAPointAnnotation alloc] init];//初始化注解對象
centerAnnotation.coordinate =self.currentLocationCoordinate;//定位經緯度
centerAnnotation.title =@"";
centerAnnotation.subtitle =@"";
[self.mapView addAnnotation:centerAnnotation];//添加注解
}
#pragma mark - MAMapView Delegate
- (MAAnnotationView *)mapView:(MAMapView *)mapView
viewForAnnotation:(id<MAAnnotation>)annotation {
if([annotation isKindOfClass:[MAPointAnnotationclass]]) {
staticNSString*pointReuseIndentifier =@"pointReuseIndentifier";
MAPinAnnotationView*annotationView = (MAPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:pointReuseIndentifier];
if(annotationView ==nil)
{
annotationView = [[MAPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pointReuseIndentifier];
}
annotationView.canShowCallout=YES;//設定氣泡可以彈出，預設為NO
annotationView.animatesDrop =YES;//設定标注動畫顯示，預設為NO
annotationView.draggable =YES;//設定标注可以拖動，預設為NO
annotationView.pinColor = MAPinAnnotationColorRed;
returnannotationView;
}
returnnil;
}
地圖的代理方法等：
- (void)mapView:(MAMapView *)mapView regionDidChangeAnimated:(BOOL)animated{
[self.mapView removeAnnotations:self.mapView.annotations];
CLLocationCoordinate2DcenterCoordinate = mapView.region.center;
self.currentLocationCoordinate = centerCoordinate;
MAPointAnnotation * centerAnnotation = [[MAPointAnnotation alloc] init];
centerAnnotation.coordinate = centerCoordinate;
centerAnnotation.title =@"";
centerAnnotation.subtitle =@"";
[self.mapView addAnnotation:centerAnnotation];
//主動選擇地圖上的地點
if(!self.isSelectedAddress) {
[self.tableView setContentOffset:CGPointMake(0,0) animated:NO];
self.selectedIndexPath=[NSIndexPathindexPathForRow:0inSection:0];
self.request.location = [AMapGeoPoint locationWithLatitude:centerCoordinate.latitude longitude:centerCoordinate.longitude];
self.currentPage =1;
self.request.page =self.currentPage;
[self.mapSearch AMapPOIAroundSearch:self.request];
}
self.isSelectedAddress =NO;
}
包括主動選擇地圖上的點然後進行附近的搜尋，可自定義搜尋的内容，定位成功之後使用者可以擷取到