无法从其他方法向mapView iOS添加注释

Question

我尝试从不同的按钮方法向地图添加注释，但它并没有显示出来。它也没有给出错误。

我在mapView方法中提到的所有注释都在显示。

-(void) testButton {


    /// custom location coordinate
    CLLocationCoordinate2D userLocationNew2 = CLLocationCoordinate2DMake(-80.050003, -13.416667);

    // use that cusom coordinate
    MKCoordinateRegion region2 = MKCoordinateRegionMakeWithDistance(userLocationNew2, 20000, 20000);
    [mapView setRegion:[self.mapView regionThatFits:region2] animated:YES];

    // Add an annotation

    MKPointAnnotation *point2 = [[MKPointAnnotation alloc] init];
    point2.coordinate = userLocationNew2;
    point2.title = @"Check";
    // point2.subtitle = @"Right here oooooo!!!";

    [mapView addAnnotation:point2];
}

另一种方法

- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{

 /// custom location coordinate
    CLLocationCoordinate2D userLocationNew2 = CLLocationCoordinate2DMake(-73.050003, -13.416667);

    // use that cusom coordinate
    MKCoordinateRegion region2 = MKCoordinateRegionMakeWithDistance(userLocationNew2, 20000, 20000);
    [self.mapView setRegion:[self.mapView regionThatFits:region2] animated:YES];

    // Add an annotation

    MKPointAnnotation *point2 = [[MKPointAnnotation alloc] init];
    point2.coordinate = userLocationNew2;
    point2.title = @"Basic";

}