android 高德地图 绘制箭头 高德地图的箭头指向

最近公司需要做范围内打卡的功能，所以研究了下高德地图的SDK，首先注册申请key就不多讲了，百度有很详细的资料，下面主要记录下实现方法。demo地址在最下方：下载后自行更新cocoapod文件下载依赖即可运行

包含功能1、定位 2、逆地理位置3、设置范围打卡 4、自定义指针选定位置

我用的是pod管理工程，这是所有的sdk文件

pod 'AFNetworking'

pod 'FMDB'

pod 'YYKit'

pod 'AMap3DMap'

pod 'AMapSearch'

更新下载好cocoapod依赖之后在appdelegate里面设置关键key

  // 配置高德地图

    [AMapServicessharedServices].apiKey =@"*********************";

    

这样我们就可以正常的写我们的方法了，写一个界面，里面显示我们的地图，定位信息

在这里我们用的是MAMapView，而不是用的manager网上有很多方法都是用的manager，我感觉既然有地图试图为什么不直接用呢？

// 设置打卡地点经纬度

@property (nonatomic,strong)NSString *localLongitude;
@property (nonatomic,strong)NSString *localLatitude;
 


// 高德地图
@property (nonatomic,strong)MAMapView *mapView;

//全局的大头针
@property(nonatomic,strong)MAPointAnnotation *pointAnnotation;
// 定位当前位置的经纬度
@property (nonatomic,strong)NSString *userLongitude;
@property (nonatomic,strong)NSString *userLatitude;
 

在viewdidappear里面家在信息

    // 进入界面就以定位点为地图中心
    [self.mapViewsetCenterCoordinate:CLLocationCoordinate2DMake([self.userLatitudefloatValue], [self.userLongitudefloatValue])animated:NO];
    // 将绘制的图形添加到地图上
    [self.mapViewaddOverlays:self.circles];
 

在viewdidload加载地图信息


    // https配置
    [AMapServicessharedServices].enableHTTPS =YES;
    // 初始化地图
    self.mapView = [[MAMapViewalloc]initWithFrame:CGRectMake(0,NAVIGATIONBAR_HEIGHT,SCREEN_WIDTH,SCREEN_HEIGHT -NAVIGATIONBAR_HEIGHT)];
    self.mapView.delegate =self;
    // 显示定位小蓝点
    self.mapView.showsUserLocation =YES;
    self.mapView.showsCompass =NO;
    //创建手势对象
    UILongPressGestureRecognizer *tap =[[UILongPressGestureRecognizeralloc]initWithTarget:selfaction:@selector(longPress:)];
    [_mapViewaddGestureRecognizer:tap];
    
    //全局的大头针
    _pointAnnotation = [[MAPointAnnotationalloc]init];
    _pointAnnotation.coordinate =CLLocationCoordinate2DMake([self.userLatitudedoubleValue], [self.userLongitudedoubleValue]);

    [_mapViewaddAnnotation:_pointAnnotation];
    [_mapViewsetCenterCoordinate:CLLocationCoordinate2DMake([self.userLatitudedoubleValue], [self.userLongitudedoubleValue])animated:YES];    

    // 追踪用户的location更新
    self.mapView.userTrackingMode =MAUserTrackingModeFollow;
    // 放大等级
    [self.mapViewsetZoomLevel:16animated:YES];
    
    [self.viewaddSubview:self.mapView];

下面是设置代理方法，动态打开需要选中一个点作为打开地点，我们添加一个长按手势获取动态位置，然后作为打卡点，通过获得的经纬度逆地理位置信息显示在title上，然后与定位获得的经纬度比较判定是否满足打卡范围。这样就完整实现了定位打卡的功能。

下面是长按手势方法

//自定义大头针我这里只是把大头针变成一张自定义的图片

-

(MAAnnotationView *)mapView:(MAMapView *)mapView viewForAnnotation:(id<MAAnnotation>)annotation
{
    if ([annotationisKindOfClass:[MAPointAnnotationclass]])
    {
        staticNSString *reuseIndetifier =@"annotationReuseIndetifier";
        MAAnnotationView *annotationView = (MAAnnotationView *)[mapViewdequeueReusableAnnotationViewWithIdentifier:reuseIndetifier];
        if (annotationView ==nil)
        {
            annotationView = [[MAAnnotationViewalloc]initWithAnnotation:annotationreuseIdentifier:reuseIndetifier];
        }
        annotationView.image = [UIImageimageNamed:@"locationPoint_select"];
        //设置中心点偏移，使得标注底部中间点成为经纬度对应点
        annotationView.centerOffset =CGPointMake(0, -18);
        return annotationView;
    }
    returnnil;
}
 

- (void)longPress:(UIGestureRecognizer*)gestureRecognizer{
//   if (gestureRecognizer.state == UIGestureRecognizerStateEnded){
//       return;
//   }
   [_mapViewremoveAnnotation:_pointAnnotation];
     //坐标转换
     CGPoint touchPoint = [gestureRecognizer  locationInView:_mapView];
     CLLocationCoordinate2D touchMapCoordinate =
   [_mapViewconvertPoint:touchPointtoCoordinateFromView:_mapView];
    
     _pointAnnotation.coordinate = touchMapCoordinate;
     //_pointAnnotation.title = @"设置名字";
    
   [_mapViewaddAnnotation:_pointAnnotation];
    
   [selfsetLocationWithLatitude:touchMapCoordinate.latitudeAndLongitude:touchMapCoordinate.longitude];
}


- (void)setLocationWithLatitude:(CLLocationDegrees)latitude AndLongitude:(CLLocationDegrees)longitude{
    
    NSString *latitudeStr = [NSStringstringWithFormat:@"%f",latitude];
    NSString *longitudeStr = [NSStringstringWithFormat:@"%f",longitude];
    
    NSLog(@"自己加的%@%@",latitudeStr,longitudeStr);
    //反编码经纬度---->位置信息
    CLLocation *location=[[CLLocationalloc]initWithLatitude:latitudelongitude:longitude];
    CLGeocoder *geocoder=[[CLGeocoderalloc]init];
    [geocoder reverseGeocodeLocation:locationcompletionHandler:^(NSArray *placemarks,NSError *error) {
        if (error) {
            NSLog(@"反编码失败:%@",error);
              [selfpresentAlertControllerWithTitle:@"提示"message:[NSStringstringWithFormat:@"该网点经纬度信息有误，请重新标注"]cancelTitle:@"好的"];
        }else{
            
            self.localLatitude = latitudeStr;
            self.localLongitude = longitudeStr;
            
            // 重新绘制打卡范围
            [selfsetAddress];
            
            //NSLog(@"反编码成功:%@",placemarks);
            CLPlacemark *placemark=[placemarkslastObject];
            //NSLog(@"%@",placemark.addressDictionary[@"FormattedAddressLines"]);
            NSDictionary *addressDic=placemark.addressDictionary;
            
            NSString *state=[addressDicobjectForKey:@"State"];
            NSString *city=[addressDicobjectForKey:@"City"];
            NSString *subLocality=[addressDicobjectForKey:@"SubLocality"];
            NSString *street=[addressDicobjectForKey:@"Street"];
            NSString *Thoroughfare=[addressDicobjectForKey:@"Thoroughfare"];
            
            NSString *strLocation;
            if (street.length ==0 || street ==NULL || [streetisEqualToString:@"(null)"]) {
                strLocation= [NSStringstringWithFormat:@"%@",subLocality];
            }elseif (Thoroughfare.length ==0 || Thoroughfare == NULL || [ThoroughfareisEqualToString:@"(null)"]||([streetisEqualToString:Thoroughfare])){
                strLocation= [NSStringstringWithFormat:@"%@%@",subLocality,street];
                
            }else{
                strLocation= [NSStringstringWithFormat:@"%@%@%@",subLocality,street,Thoroughfare];
            }
            NSLog(@"%@%@%@",state,city,strLocation);
            self.title = strLocation;
            
        }
    }];
}

其他还有一些小功能，比如比例缩放，重新定位。离线地图等

其他功能参考一下高德地图，可是实现长按出现选定位置信息，反编译出地理信息，名称等。