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我剛開始與「目標C and Parse`發展。 我在我的應用程序中有一個功能，允許用戶進入新的爬升。 數據存儲在我的Parse表中。我補充說，爬到我的應用程序的地圖視圖部分。Select語句解析目標C
我想寫存儲所有從查詢結果的成某種數組的SELECT語句，然後我會轉儲到地圖視圖部分。通過這種方式，我認爲每次添加新區域時都會動態地將地圖圖釘添加到地圖中，如果它尚不存在的話。
我是一個.NET開發人員，並在這種情況下我會抓住所有的數據，然後從那裏轉儲到一個數據表，並真正與它....但我不知道最好的做法就這樣做與我的上述情況在objective c。
我會後我的代碼如下圖：
MapPin.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface MapPin : NSObject <MKAnnotation>
{
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
}
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@end
MapPin.m
#import "MapPin.h"
@implementation MapPin
@synthesize coordinate, title, subtitle;
@end
MapViewController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface MapViewController : UIViewController
{
MKMapView *mapView;
}
@property (nonatomic, retain) IBOutlet MKMapView *mapView;
-(IBAction)SetMap:(id)sender;
-(IBAction)GetLocation:(id)sender;
-(IBAction)Directions:(id)sender;
@end
MapViewController.m
#import "MapViewController.h"
#import "MapPin.h"
@interface MapViewController()<MKMapViewDelegate>
@end
@implementation MapViewController
@synthesize mapView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
mapView.delegate = self;
//new
//[self.mapView setShowsUserLocation:YES];
//Moss Preserve annotation and map pin
MapPin *MossPreserveAnnotation = [[MapPin alloc] init];
MossPreserveAnnotation.title = @"Moss Rock Preserve Boulder Fields";
MossPreserveAnnotation.subtitle = @"Hoover, AL";
MossPreserveAnnotation.coordinate = CLLocationCoordinate2DMake(33.3816566, -86.8415451);
[mapView addAnnotation:MossPreserveAnnotation];
//Setup map
MKCoordinateRegion mapCoordRegion;
mapCoordRegion.center.latitude = 39;
mapCoordRegion.center.longitude = -97;
mapCoordRegion.span.latitudeDelta = 60.0;
mapCoordRegion.span.longitudeDelta = 60.0;
[mapView setRegion:mapCoordRegion];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault];
self.navigationController.navigationBar.hidden = NO;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
// Create an MKMapItem to pass to the Maps app
MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:view.annotation.coordinate
addressDictionary:nil];
MKMapItem *MapItem = [[MKMapItem alloc] initWithPlacemark:placemark];
[MapItem setName:view.annotation.title];
NSDictionary *launchOptions = @{MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving};
// Get the "Current User Location" MKMapItem
MKMapItem *currentLocationItem = [MKMapItem mapItemForCurrentLocation];
[MKMapItem openMapsWithItems:@[currentLocationItem, MapItem]
launchOptions:launchOptions];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
MKAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:@"MKPinAnnotationView"];
annotationView.canShowCallout = YES;
UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[detailButton setTintColor:[UIColor colorWithRed:183/255.0 green:207/255.0 blue:85/255.0 alpha:0.5]];
annotationView.rightCalloutAccessoryView = detailButton;
return annotationView;
}
-(IBAction)SetMap:(id)sender;
{
switch (((UISegmentedControl *) sender).selectedSegmentIndex)
{
case 0:
mapView.mapType = MKMapTypeStandard;
break;
case 1:
mapView.mapType = MKMapTypeSatellite;
break;
case 2:
mapView.mapType = MKMapTypeHybrid;
break;
default:
break;
}
}
-(IBAction)GetLocation:(id)sender;
{
mapView.showsUserLocation = YES;
}
-(IBAction)Directions:(id)sender;
{
NSString *urlString = @"http://maps.apple.com/maps?daddr=33.3816566,-86.8415451";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]];
}
@end
對不起傾倒了很多在這裏的代碼......只是想爲大家提供了什麼我了。