小编use*_*133的帖子

我创建了一个 Mapkit 应用程序，在其中显示我的位置并每次更新此位置并将此位置设置在视图中心。我更新我的位置并使用布尔变量设置在中心。我想在地图上检测滚动或缩放触摸手指，当我这样做时，我的布尔变量发生了变化，并且没有将我的位置设置在中心，但我不知道如何处理 Mapkit 上的触摸事件。

请指导我，并告诉我如何在触摸和滚动地图时更改变量。谢谢。这是我的代码：

@implementation ViewController
{
    CLLocationManager *locationManager;
    double latitudes;
    double longitudes;
    BOOL updateLocation;
}
@synthesize mapView;
- (void)viewDidLoad
{
    [super viewDidLoad];
    locationManager = [[CLLocationManager alloc] init];
    updateLocation = YES;
    mapView = [[MKMapView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    mapView.mapType = MKMapTypeStandard;
    mapView.zoomEnabled = YES;
    mapView.scrollEnabled = YES;
    mapView.showsUserLocation = YES;
    [mapView.userLocation setTitle:@"I'm Here"];
    [self.view addSubview:mapView];
    mapView.delegate = self;

    [self GetMyLocation];


}
#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
            NSLog(@"didFailWithError: %@", error);
            UIAlertView *errorAlert = [[UIAlertView alloc] …

我有一张地图,我可以用代码添加pin(注释).我想在运行我的应用程序时,在我的应用程序中添加注释时自动选择此注释,当单击地图而不是注释我的注释取消选择.我可以处理选择并取消选择我的注释,但肯定必须单击注释,直到选择并单击地图(另一个地方而不是注释),直到我的注释取消选择.

我不想要这个.我想在运行我的应用时自动选择我的注释,只需要在地图上点击另一个地方,直到我的注释取消选择.

请指导我.这是我处理select/deselect注释的代码:

static NSString* const ANNOTATION_SELECTED_DESELECTED = @"mapAnnotationSelectedOrDeselected";


- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    NSLog(@"2");
    NSString *action = (__bridge NSString *)context;
    if ([action isEqualToString:ANNOTATION_SELECTED_DESELECTED]) {
        BOOL annotationSelected = [[change valueForKey:@"new"] boolValue];
        if (annotationSelected) {
            NSLog(@"Annotation was selected, do whatever required");
        }else {
            NSLog(@"Annotation was deselected, do what you must");

        }
    }
}
- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views {
    if ([mapViews.annotations count] > 1) {
        for (MKAnnotationView *anAnnotationView in views) {
            [anAnnotationView addObserver:self forKeyPath:@"selected" options:NSKeyValueObservingOptionNew context:(__bridge void …

我在我的应用程序中使用谷歌地图 api。我的应用程序中有两个按钮。第一个按钮在我的地图中添加了一个标记（图钉）。现在我想要第二个按钮将添加的图钉水平移动到页面的中心，并使其移动到离页面顶部 25% 的位置。我希望相机（用户正在查看的区域）也移动它。这是我的代码：

@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
    // …