当我在我的 mkmapview 上放一个图钉时，动画效果很好，并且图钉按预期从屏幕顶部掉落。我把那个别针涂成红色，因为我还没有验证它。但是，如果我使用一些在 calloutAccessoryControlTapped 上调用的代码验证引脚，我会将引脚的颜色更改为绿色。
当我在地图上按下另一个红色大头针时，动画失败并且大头针刚刚出现。如果我再做一次（长按），就会出现一个新的图钉，它的动画很好。我可以对导致这种行为的注释做什么。
感谢您对这里可能出了什么问题的任何见解......多尼
- (MKAnnotationView *)mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[MKUserLocation class]])
{
return nil;
}
static NSString * const kPinIdentifier = @"PinIdentifier";
MKPinAnnotationView *draggablePinView = (MKPinAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:kPinIdentifier];
if(!draggablePinView)
{
draggablePinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:kPinIdentifier] autorelease];
draggablePinView.pinColor = MKPinAnnotationColorRed;
draggablePinView.animatesDrop = YES;
draggablePinView.canShowCallout = YES;
draggablePinView.draggable = YES;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
draggablePinView.rightCalloutAccessoryView = rightButton;
}
else
{
draggablePinView.annotation = annotation;
draggablePinView.animatesDrop = YES;
}
return draggablePinView;
}
-(void)longPressGesture:(UIGestureRecognizer *)gestureRecognizer
{
if (gestureRecognizer.state == UIGestureRecognizerStateBegan)
{
CGPoint touchPoint = [gestureRecognizer locationInView:mapView];
CLLocationCoordinate2D touchMapCoordinate = [mapView convertPoint:touchPoint toCoordinateFromView:mapView];
[self dropPinWithCoords:touchMapCoordinate];
}
}
- (void)mapView:(MKMapView *)mapview annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
[self getFromServer];
}
-(void) showLoc8CodeDetail:(LOC8Code *) loc8
{
// Open the view controller
viewLoc8ViewController *loc8view = [[viewLoc8ViewController alloc] initWithLoc8code:loc8];
[gMainViewController.navigationController pushViewController:loc8view animated:YES];
[loc8view release];
}
-(void) dropPinWithCoords:(CLLocationCoordinate2D)loc
{
// Set the loc8code from index 0 in the global array and populate from response
LOC8Code *newPin = [gMapAnnotations objectAtIndex:0];
newPin.starRating = 1;
newPin.title = @"Unverified Pin";
newPin.subtitle = @"Click to verify postcode";
newPin.verified = NO; // this means you do have to requery if opened
newPin.coordinate = loc;
[self removeMapAnnotations];
[gMapAnnotations replaceObjectAtIndex:1 withObject:newPin];
[self.mapView addAnnotation:[gMapAnnotations objectAtIndex:1]];
// Reset flags
[dropPinButton setTitle:@"Replace Pin" forState:UIControlStateNormal];
[self moveAndHidePinButtons:NO];
}
-(void)getFromServer
{
[self checkRegisteredFromServer]; // Does API call to see if device already registered
// Get the loc8 code from the global array (pin always index 1)
LOC8Code *loc8 = [gMapAnnotations objectAtIndex:1];
// If we have a verified pin already (from a search) just show the info
if(loc8.verified == YES)
{
[self showLoc8CodeDetail:loc8];
}
else
{
[self setSpinning:YES];
// Get coordinates
NSString *urlWithCoords = [NSString stringWithFormat:@"https://www.server.com/api/rest/lite/loc?t=%@&u=%@&a=iloc8er&la=%f&lo=%f",
[Util getAPIToken], [UIDevice currentDevice].uniqueIdentifier,
loc8.coordinate.latitude,
loc8.coordinate.longitude];
NSLog(@"%@", urlWithCoords);
ASIHTTPRequest *request = [self populateRequest:request withURL: urlWithCoords];
[request setDidFinishSelector:@selector(loc8returned:)];
[[self networkQueue] addOperation:request];
}
}
-(void)loc8returned:(ASIHTTPRequest *)request
{
@try
{
NSString *response = [request responseString];
NSLog(@"RSP: %@", response);
// Store incoming data into an NSDictionary
SBJsonParser *parser = [[SBJsonParser new]autorelease];
NSDictionary *results = [parser objectWithString:response error:nil];
// Check for errors
NSNumber *r = [results objectForKey:@"r"];
NSString *e = [results valueForKey:@"e"];
if(r.boolValue == NO)
{
if([e isEqualToString:@"lc51"] || [e isEqualToString:@"lc52"])
{
// Outside range
[self setSpinning:NO];
return;
}
if([e isEqualToString:@"ud04"])
{
// quota check
[self setSpinning:NO];
return;
}
}
else
{
LOC8Code *loc8 = [gMapAnnotations objectAtIndex:1];
// Set the loc8code
NSString *lc = [results valueForKey:@"lc"];
loc8.postcode = lc;
loc8.verified = YES;
loc8.starRating = 0;
loc8.title = lc;
// This pin is now validated
MKPinAnnotationView *pinView = (MKPinAnnotationView*)[mapView viewForAnnotation:[gMapAnnotations objectAtIndex:1]];
pinView.pinColor = MKPinAnnotationColorGreen;
// Open the view controller
[self showLoc8CodeDetail:loc8];
}
}
@catch (NSException *exception)
{
[Util say:@"Service Temporarily Unavailable (-200):"];
NSLog(@"RSP: %@, %@", [exception name], [exception reason]);
}
[self setSpinning:NO];
}
loc8code 头类定义如下：
@interface LOC8Code : MKPlacemark {
NSString *postcode;
NSString *BusinessName;
int starRating;
CLLocationCoordinate2D coordinate_;
NSString *title_;
NSString *subtitle_;
BOOL verified; // Verified locations can't be moved (if pin moved then flag as not verified)
}
// Re-declare MKAnnotation's readonly property 'coordinate' to readwrite.
@property (nonatomic, retain) NSString *postcode;
@property (nonatomic, retain) NSString *BusinessName;
@property (nonatomic, assign) int starRating;
@property (nonatomic, readwrite, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, retain) NSString *title;
@property (nonatomic, retain) NSString *subtitle;
@property (nonatomic, assign) BOOL verified;
@end
以及实施
#import "LOC8Code.h"
@implementation LOC8Code
@synthesize coordinate = coordinate_;
@synthesize title = title_;
@synthesize subtitle = subtitle_;
@synthesize verified;
@synthesize starRating;
@synthesize postcode;
@synthesize BusinessName;
- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate addressDictionary:(NSDictionary *)addressDictionary {
if ((self = [super initWithCoordinate:coordinate addressDictionary:addressDictionary])) {
self.coordinate = coordinate;
}
return self;
}
- (void)dealloc {
[title_ release];
[subtitle_ release];
[postcode release];
[BusinessName release];
[super dealloc];
}
@end