小编Kri*_*utt的帖子

我有我的所有注释安装到屏幕的问题......有时它会显示所有注释,但另外一些时候应用在两个注释之间放大,使他们都不是可见的.我希望应用程序始终使区域适合注释而不是放大它们之间...我做错了什么？

if ([mapView.annotations count] == 2) { 
 CLLocationCoordinate2D SouthWest = location;
 CLLocationCoordinate2D NorthEast = savedPosition;

 NorthEast.latitude = MAX(NorthEast.latitude, savedPosition.latitude);
 NorthEast.longitude = MAX(NorthEast.longitude, savedPosition.longitude); 

 SouthWest.latitude = MIN(SouthWest.latitude, location.latitude);
 SouthWest.longitude = MIN(SouthWest.longitude, location.longitude);

 CLLocation *locSouthWest = [[CLLocation alloc] initWithLatitude:SouthWest.latitude longitude:SouthWest.longitude];
 CLLocation *locNorthEast = [[CLLocation alloc] initWithLatitude:NorthEast.latitude longitude:NorthEast.longitude];

 CLLocationDistance meter = [locSouthWest distanceFromLocation:locNorthEast];

 MKCoordinateRegion region;
 region.span.latitudeDelta = meter / 111319.5;
 region.span.longitudeDelta = 0.0;
 region.center.latitude = (SouthWest.latitude + NorthEast.latitude) / 2.0;
 region.center.longitude = (SouthWest.longitude + NorthEast.longitude) / 2.0;

 region = [mapView regionThatFits:region];
 [mapView setRegion:region …

基本上,我尝试做的是添加多个确认页...但我不能让它工作.无论我按什么确认,"继续"按钮都会导致完全相同的事情(没有文字的主体和带有"XXXX"的主题)...任何想法如何让confimationalerts导致不同的东西？

编辑2; 无论我按什么按钮(继续或解除),应用程序都会将用户发送到mail.app ...

        -(IBAction)mail {

                    UIAlertView *mail = [[UIAlertView alloc] init];
                        [mail setTag:ALERTVIEW_MAIL_TAG];
                        [mail setTitle:@"Open mail"];
                        [mail setMessage:@"....."];
                        [mail setDelegate:self];
                        [mail addButtonWithTitle:@"Continue"];
                        [mail addButtonWithTitle:@"Dismiss"];
                        [mail show];
                        [mail release];

                    }

                    -(IBAction)feedback {
                        UIAlertView *feedback = [[UIAlertView alloc] init];
                        [feedback setTag:ALERTVIEW_TIPSA_TAG];
                        [feedback setTitle:@"Open mail"];
                        [feedback setMessage:@"....."];
                        [feedback setDelegate:self];
                        [feedback addButtonWithTitle:@"Continue"];
                        [feedback addButtonWithTitle:@"dismiss"];
                        [feedback show];
                        [feedback release];
                    }

- (void)showConfirmAlert
                    {   
                    }   

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
                   if([alertView tag] == ALERTVIEW_FEEDBACK_TAG) {
                        NSURL *url = [[NSURL alloc] initWithString:@"mailto:?subject=XXXX"];
                        [[UIApplication sharedApplication] openURL:url];
                        [url …