显示当前位置以及 iPhone 中的另一个位置

发布于 2024-08-31 15:10:48 字数 1527 浏览 6 评论 0原文

每当我们加载地图视图时，它都会自动正确显示当前用户位置。就我而言，我在地图上显示另一个位置，以便地图加载当前位置并缩放到我给出的位置..但是，当前位置点没有显示（自动出现的蓝色点..）。我已经给出了mapView.showCurrentLocation=TRUE;但它没有显示。所以任何人都可以告诉它的工作方式，它应该说出当前位置标记，然后缩放到我给出的点。谢谢

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
    static NSString *defaultPinID = @"CameraAnnotation";
    MKPinAnnotationView *retval = nil;
    static int postag=1;

    (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
    if(annotation=MapView.userLocation)
    {
        return nil;
    }
    // If we have to, create a new view
    else    if (retval == nil)
    {
        retval = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease];

        UIButton *myDetailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        myDetailButton.frame = CGRectMake(0, 0, 50, 23);
        myDetailButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
        myDetailButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
        myDetailButton.tag=postag;
        postag++;
        [myDetailButton addTarget:self action:@selector(showLinks:) forControlEvents:UIControlEventTouchUpInside];
        retval.rightCalloutAccessoryView = myDetailButton;
        [retval setPinColor:MKPinAnnotationColorRed];
        retval.animatesDrop = YES;
        retval.canShowCallout = YES;
    }

    return retval;
}

原文

whenever we load a mapview ,it automaticallay shows the current user location right. In my case i am showing another location on map ,such that the map loads the current location and zoomed to the location i have given .. but, the current location point was not showing (the blue one which comes automaticay..).
i have given mapView.showCurrentLocation=TRUE; but its not showing .
so could any one tells the way it works and it should say the current location mark and then zoomed to the point i have given.
Thanks

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
    static NSString *defaultPinID = @"CameraAnnotation";
    MKPinAnnotationView *retval = nil;
    static int postag=1;

    (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
    if(annotation=MapView.userLocation)
    {
        return nil;
    }
    // If we have to, create a new view
    else    if (retval == nil)
    {
        retval = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease];

        UIButton *myDetailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        myDetailButton.frame = CGRectMake(0, 0, 50, 23);
        myDetailButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
        myDetailButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
        myDetailButton.tag=postag;
        postag++;
        [myDetailButton addTarget:self action:@selector(showLinks:) forControlEvents:UIControlEventTouchUpInside];
        retval.rightCalloutAccessoryView = myDetailButton;
        [retval setPinColor:MKPinAnnotationColorRed];
        retval.animatesDrop = YES;
        retval.canShowCallout = YES;
    }

    return retval;
}

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孤独难免 2024-09-07 15:10:48

在模拟器中，默认的当前位置是库比蒂诺。这就是您所看到的，它将在设备中正常工作。

此外，您应该使用 CLLocationManager 来获取当前位置。

- (void)applicationDidFinishLaunching:(UIApplication *)application { 
{
self.locationManager = [[[CLLocationManager alloc] init] autorelease];
self.locationManager.delegate = self; // Tells the location manager to send updates to this object
[locationManager startUpdatingLocation];
}

更改图钉颜色祝

MKPinAnnotationView   *pin=[[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pin"]autorelease];

[pin setPinColor:MKPinAnnotationColorRed];

一切顺利。

In simulator the default current location is Cupertino.This is what you are seeing, it will work properly in device.

More over you should use CLLocationManager to get the current location.

- (void)applicationDidFinishLaunching:(UIApplication *)application { 
{
self.locationManager = [[[CLLocationManager alloc] init] autorelease];
self.locationManager.delegate = self; // Tells the location manager to send updates to this object
[locationManager startUpdatingLocation];
}

To change the pin color

MKPinAnnotationView   *pin=[[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pin"]autorelease];

[pin setPinColor:MKPinAnnotationColorRed];

All the best.

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