mapkit select all annotations - ios

Question

I'm building an app using swift and MapKit. It has several custom point annotations. I would like to display the title above all annotations at any time, by default. Hence they would be all selected. Therefore I could get inspiration from this post and use:
[mapView selectAnnotation:pinView animated:YES]
But I still need to be able to select a pin by clicking on it and get a new mapScope based on this annotation. How could I do it?
If the first solution is not possible, I would use a specific label on each annotation. But then is there a way to hide the annotation title forever?
EDIT:
Here is the code for the custom point annotation:
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
println("viewForAnnotation")
if !(annotation is MKPointAnnotation) {
return nil
}
var seleccion:Bool
let cpa = annotation as! CustomPointAnnotation
let reuseId = cpa.nickName as String
var anView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId)
if anView == nil {
anView = MKAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
anView.canShowCallout = true
// create and add UILabel only when actually creating MKAnnotationView
var nameLbl: UILabel! = UILabel(frame: CGRectMake(-24, 40, 100, 30))
nameLbl.tag = 42
nameLbl.textColor = UIColor.blackColor()
nameLbl.font = UIFont(name: "Atari Classic Extrasmooth", size: 10)
nameLbl.textAlignment = NSTextAlignment.Center
anView.addSubview(nameLbl)
}
else {
anView.annotation = annotation
}
anView.image = cpa.image
if cpa.toBeTriggered == true {
anView.selected = true
}
if let nameLbl = anView.viewWithTag(42) as? UILabel {
nameLbl.text = cpa.nickName
}
return anView
}

Answer 1

As you are using custom annotation views this code will be helpful to you.
-(MKAnnotationView *)mapView:(MKMapView *)mV viewForAnnotation:(id <MKAnnotation>)annotation //thammu
{
static NSString *reuseId = #"StandardPin";
MKAnnotationView *aView;
//MKAnnotationView *aView = (MKAnnotationView *)[Mapsview dequeueReusableAnnotationViewWithIdentifier:reuseId];
aView = [[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:reuseId];
aView.enabled = YES;
aView.canShowCallout = YES;
aView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
UIImageView *img=[[UIImageView alloc]initWithFrame:CGRectMake(-41,-22,121,25)];
img.image=[UIImage imageNamed:#"annotation-bg#2x.png"]; //This is the Details image view
UILabel *lblPlaceholder1=[[UILabel alloc]init];
lblPlaceholder1 = [[UILabel alloc]initWithFrame:CGRectMake(4,2,117, 21)];
lblPlaceholder1.backgroundColor=[UIColor clearColor];
lblPlaceholder1.numberOfLines=1;
[lblPlaceholder1 setTextColor:[UIColor redColor]];
lblPlaceholder1.textAlignment=NSTextAlignmentCenter;
lblPlaceholder1.text=annotation.title;
[lblPlaceholder1 setTextColor:[UIColor darkGrayColor]];
[lblPlaceholder1 setFont:[UIFont fontWithName:#"Roboto-Regular" size:12.0f]];
NSString *subTitleStr = annotation.subtitle;
[img addSubview:lblPlaceholder1];
[aView addSubview:img];
[img setUserInteractionEnabled:YES];
aView.image = [UIImage imageNamed:#"tracker.png"];//This is marker image view
aView.annotation = annotation;
return aView;
}
Here all the annotations in map are by default visible.