Question

我正在尝试在地图上删除引脚，但它没有调用委托方法

（MKAnnotationView *）mapView：（MKMapView *）mapView viewForAnnotation：（id）annotation {

我的应用程序是通用的，所以当我使用iPhone时，它会正确调用委托方法，但是当我使用iPad时，则不会调用委托方法。代码如下：

（MKAnnotationView *）mapView：（MKMapView *）mapView viewForAnnotation：（id）annotation {

static NSString * identifier = @“MachineLocation”;
if（[注释isKindOfClass：[MachineLocation class]]）{

MKPinAnnotationView *annotationView = (MKPinAnnotationView *) [self.mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
    annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
} else {
    annotationView.annotation = annotation;
}

annotationView.enabled = YES;
annotationView.canShowCallout = YES; //        
if (isWeatherOn) {
    if (imageFlag == 0) {
        annotationView.image=[UIImage imageNamed:@"Clouds.png"];
    }
    if (imageFlag == 1) {
        annotationView.image=[UIImage imageNamed:@"Sun + Clouds.png"];
    }
    if (imageFlag == 2) {
        annotationView.image=[UIImage imageNamed:@"Sun.png"];
    }
    imageFlag++;
}
else
{
    annotationView.image=[UIImage imageNamed:@"arrest.png"];
    NSLog(@"annotation");
}

annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

return annotationView;

}

返回零; }

viewWillApear代码下的

是

NSString *tempString;
            for(NSMutableArray *array in appDelegate.globalVehicleInfoArray) { 
                for (VehicleInfo *vehicleInfo in array) {
                    for (WeatherCondition *weather in appDelegate.globalWeatherConditionArray) {
                        if ([weather.weatherID isEqualToString:[vehicleInfo vehicleID]]) {
                            tempString = [weather weatherTempC];
                            //                            NSLog(@"weather id matched");
                        }
                    }
                    NSString *name = [vehicleInfo vehicleName];
                    NSString *machineDescription = [NSString stringWithFormat:@"%@     %@ C", [vehicleInfo vehicleLastUpdate], tempString];
                    MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
                    CLLocationCoordinate2D coordinate;
                    coordinate.latitude = [[vehicleInfo vehicleLastPositionY] doubleValue]; 
                    coordinate.longitude = [[vehicleInfo vehicleLastPositionX] doubleValue];
                    NSLog(@"%f , %f", coordinate.latitude, coordinate.longitude);
                    MachineLocation *location = [[MachineLocation alloc] initWithId:[vehicleInfo vehicleID] :name description:machineDescription coordinate:coordinate];
//                    annotation.coordinate = coordinate;
                    [self.mapView addAnnotation:location];
                }


            }

MKMapView不调用委托方法

0 个答案: