如何用相机谷歌地图xcode移动标记（pin） [英] how to move marker (pin) with camera google maps xcode

问题描述

我在我的应用中使用Google Maps API。我的应用中有两个按钮。第一个按钮在我的地图上添加一个标记（pin）。
现在我想要第二个按钮将添加的引脚水平移动到页面中心，并使其移动到页面顶部25％处。我想让相机（用户正在查看的区域）也移动它。
这是我的代码：

  @implementation ViewController 
 {
 double纬度; 
双经度; 
 CLLocationManager * locationManager; 
 GMSMapView * mapView_; 
} 
  - （void）viewDidLoad 
 {
 [super viewDidLoad]; 
 locationManager = [[CLLocationManager alloc] init]; 
 [self GetMyLocation]; 
 
 UIButton * pinButton = [UIButton buttonWithType：UIButtonTypeRoundedRect]; 
 pinButton.frame = CGRectMake（self.view.frame.size.width-80，self.view.frame.size.height-80，60，60）; 
 [pinButton setTitle：@SelfforState：UIControlStateNormal]; 
 [pinButton setBackgroundColor：[UIColor whiteColor]]; 
 [pinButton addTarget：self action：@selector（ShowMyLocation :) forControlEvents：UIControlEventTouchUpInside]; 
 
 UIButton * add = [UIButton buttonWithType：UIButtonTypeRoundedRect]; 
 add.frame = CGRectMake（20，self.view.frame.size.height-80，60，60）; 
 [add setTitle：@addforState：UIControlStateNormal]; 
 [add setBackgroundColor：[UIColor whiteColor]]; 
 [add addTarget：self action：@selector（Move :) forControlEvents：UIControlEventTouchUpInside]; 
 
 //创建一个GMSCameraPosition，告诉地图显示
 // nokte mohem ine ke baadan ye logitude&纬度默认ezafe kon chon shaiad tuie ye sharaiete tokhmi ke hamid esrar dare va ye kasi mariz bood dastresie GPS ro ghat kard 
 
 GMSCameraPosition * camera = [GMSCameraPosition cameraWithLatitude：纬度经度：经度zoom：14]; 
 mapView_ = [GMSMapView mapWithFrame：CGRectZero camera：camera]; 
 mapView_.myLocationEnabled = YES; 
 [mapView_ setMapType：kGMSTypeNormal]; 
 self.view = mapView_; 
 [mapView_ addSubview：pinButton]; 
 [mapView_ addSubview：add]; （IBAction）移动：（id）发送者{
 //移动标记位置
} 
  - （IBAction）ShowMyLocation：（id ）sender {
 
 GMSMarker * marker = [[GMSMarker alloc] init]; 
 marker.position = CLLocationCoordinate2DMake（coor.latitude，coor.longitude）; 
 marker.title = @我在这里; 
 marker.snippet = @Rahnova Co.; 
 marker.appearAnimation = kGMSMarkerAnimationPop; 
 marker.map = mapView_; 
} 
  - （void）GetMyLocation {
 locationManager.delegate = self; 
 locationManager.desiredAccuracy = kCLLocationAccuracyBest; 
 [locationManager startUpdatingLocation]; 
} 
 #pragma mark  -  CLLocationManagerDelegate 
  - （void）locationManager：（CLLocationManager *）manager didFailWithError：（NSError *）error {
 NSLog（@didFailWithError：％@ ，错误）; 
 UIAlertView * errorAlert = [[UIAlertView alloc] 
 initWithTitle：@错误消息：@无法获得您的位置委托：无cancelButtonTitle：@OKotherButtonTitles：nil]; 
 [errorAlert show]; （CLLocationManager *）manager didUpdateToLocation：（CLLocation *）newLocation fromLocation：（CLLocation *）oldLocation {
 CLLocation * currentLocation = newLocation; 
 if（currentLocation！= nil）{
经度= currentLocation.coordinate.longitude; 
纬度= currentLocation.coordinate.latitude; 
} 
 GMSCameraPosition * camera = [GMSCameraPosition cameraWithLatitude：纬度经度：经度zoom：14]; 
 [mapView_ animateToCameraPosition：camera]; 
} 
  

预先致谢

解决方案

请尝试以下代码： -

在 .M 实现文件的标题上，必须实现 GMSMapViewDelegate 。

  @interface YourViewController（）< GMSMapViewDelegate> 
  

在 viewDidLoad 内部，您必须将mapView委托设置为self。

  mapView_.delegate = self; 
  

对于委托方法： - $ /

<$ p （GMSMapView *）mapView didTapMarker：（GMSMarker *）marker {
[mapView animateToLocation：marker.position]; $ p $ - （BOOL）mapView：
返回YES;
}


当您点击它时，它将帮助您转到标记位置。

I am using google maps api in my app. I've got two buttons in my app. the first button adds a marker (pin) in my map. Now I want the second button to move the added pin to the center of the page horizontally and make it move to 25% off the top of the page. I want the camera (The area that the user is viewing) to move it too. this is my code:

@implementation ViewController
{
    double latitudes;
    double longitudes;
    CLLocationManager *locationManager;
    GMSMapView *mapView_;
}
- (void)viewDidLoad
{
    [super viewDidLoad];
    locationManager = [[CLLocationManager alloc] init];
    [self GetMyLocation];

    UIButton *pinButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    pinButton.frame = CGRectMake(self.view.frame.size.width-80,self.view.frame.size.height-80, 60, 60);
    [pinButton setTitle:@"Self" forState:UIControlStateNormal];
    [pinButton setBackgroundColor:[UIColor whiteColor]];
    [pinButton addTarget:self action:@selector(ShowMyLocation:)     forControlEvents:UIControlEventTouchUpInside];

    UIButton *add = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    add.frame = CGRectMake(20,self.view.frame.size.height-80, 60, 60);
    [add setTitle:@"add" forState:UIControlStateNormal];
    [add setBackgroundColor:[UIColor whiteColor]];
    [add addTarget:self action:@selector(Move:)     forControlEvents:UIControlEventTouchUpInside];

    // Create a GMSCameraPosition that tells the map to display the
    // nokte mohem ine ke baadan ye logitude & latitude default ezafe kon chon shaiad tuie ye sharaiete tokhmi ke hamid esrar dare va ye kasi mariz bood dastresie GPS ro ghat kard

    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitudes longitude:longitudes zoom:14];
    mapView_ = [GMSMapView mapWithFrame:CGRectZero  camera:camera];
    mapView_.myLocationEnabled = YES;
    [mapView_ setMapType:kGMSTypeNormal];
    self.view = mapView_;
    [mapView_ addSubview:pinButton];
    [mapView_ addSubview:add];

}
- (IBAction)Move:(id)sender{
    //move marker place
}
- (IBAction)ShowMyLocation:(id)sender{

    GMSMarker *marker = [[GMSMarker alloc] init];
    marker.position = CLLocationCoordinate2DMake(coor.latitude,coor.longitude);
    marker.title = @"I'm Here";
    marker.snippet = @"Rahnova Co.";
    marker.appearAnimation = kGMSMarkerAnimationPop;
    marker.map = mapView_;
}
- (void) GetMyLocation{
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    [locationManager startUpdatingLocation];
}
#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
    NSLog(@"didFailWithError: %@", error);
    UIAlertView *errorAlert = [[UIAlertView alloc]
                               initWithTitle:@"Error" message:@"Failed to Get Your Location" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [errorAlert show];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
    CLLocation *currentLocation = newLocation;
    if (currentLocation != nil) {
        longitudes = currentLocation.coordinate.longitude;
        latitudes = currentLocation.coordinate.latitude;
    }
    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitudes longitude:longitudes zoom:14];
    [mapView_ animateToCameraPosition:camera];
}

Thanks in advance

解决方案

Try this code:-

On the header of your .M implementation file, you have to implement the GMSMapViewDelegate.

@interface YourViewController ()<GMSMapViewDelegate>

Inside viewDidLoad, you have to set the mapView delegate to self.

mapView_.delegate=self;

For the delegate method:-

-(BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker{
 [mapView animateToLocation:marker.position];
 return YES;
}

It shall help you to go to the marker position when you tap on it.

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