how to add UITextField in MKAnnotationView Title - iphone

Question

I try like this, but it isn't work. How can i do this ?
MKAnnotationView *pointTest = [[MKAnnotationView alloc] init];
pointTest.annotation = point;
pointTest.draggable= YES;
UITextField *pointText = [[UITextField alloc] initWithFrame:CGRectMake(location.latitude, location.longitude, 100, 20)];
pointText.backgroundColor = [UIColor blackColor];
pointTest.rightCalloutAccessoryView = pointText;
pointTest.canShowCallout = YES;
[self.userMap addAnnotation:pointTest];

Answer 1

First of all, you are setting a wrong frame for the pointText UITextField, latitude and longitude are not screen coordinates, it should be implemented like this:
CGFloat originX = 0; //Or other value
CGFLoat originY = 0; //Or other value
UITextField *pointText = [[UITextField alloc] initWithFrame:CGRectMake(originX, originY, 100, 20)];
You may also need to set canShowCallout to YES:
pointTest.canShowCallout = YES;
Then, you are setting the rightCalloutAccessoryView as an UITextField, which is not the best thing to do. A common view to specify for this property is UIButton object whose type is set to UIButtonTypeDetailDisclosure. For titles and subtitles, I prefer using the annotation attribute:
point.title = "Your title";
pointTest.annotation = point;
You should check the apple documentation.