2012-12-27 122 views
-1

我有3種類型的位置。針對不同數據的不同MKPinAnnotation

我從我的服務器獲取數據,然後解析它並在mapView上顯示位置。

我想爲不同類型的數據顯示不同的顏色。 3種= 3種顏色。

我該如何控制它?

+0

試試這個, annotation1.subtitle = @ 「第一個註釋」; annotation2.subtitle = @「2st annotation」; annotation3.subtitle = @「3st annotation」; 檢查註釋 如果([annotation.subtitle isEqualToString:@ 「第一標註」]){ // 變色 } 否則如果([annotation.subtitle isEqualToString:@ 「2ST註釋」]){ //改變顏色 } 否則如果([annotation.subtitle isEqualToString:@「3ST註釋」]){ // 變色 } – Kalpesh

回答

1

執行viewForAnnotation委託方法來做到這一點。

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation 
{ 
    static NSString *identifier = @"MyLocation"; 
    if ([annotation isKindOfClass:[yourAnnotationLocation class]]) 
    { 

     MKAnnotationView *annotationView = (MKAnnotationView *) [_mapView dequeueReusableAnnotationViewWithIdentifier:identifier]; 
     if (annotationView == nil) 
     { 
      annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier]; 
      annotationView.enabled = YES; 
      annotationView.canShowCallout = YES; 
      //if you need image you can set it like 
      //annotationView.image = [UIImage imageNamed:@"yourImage.png"];//here we use a nice image instead of the default pins 
      annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; 
     } 
     else 
     { 
      annotationView.annotation = annotation; 
     } 
     if ([annotation.title isEqualToString:@"Midhun"]) 
     { 
      annotationView.pinColor = MKPinAnnotationColorGreen; 
     } 
     else 
     { 
      annotationView.pinColor = MKPinAnnotationColorRed; 
     } 
     return annotationView; 
    } 

return nil; 
} 

對於設置自定義屬性,您添加註釋,確認了MKAnnotation協議的類。

#import <Foundation/Foundation.h> 
#import <MapKit/MapKit.h> 

@interface MyLocation : NSObject <MKAnnotation> { 
    NSString *_name; 
    NSString *_address; 
    int _yourValue; 
    CLLocationCoordinate2D _coordinate; 
} 

@property (copy) NSString *name; 
@property (copy) NSString *address; 
@property (assign) yourValue; 
@property (nonatomic, readonly) CLLocationCoordinate2D coordinate; 

- (id)initWithName:(NSString*)name address:(NSString*)address coordinate:(CLLocationCoordinate2D)coordinate; 

@end 

這是一個不錯的tutorial

+0

我不想檢查,如果標題是平等的,因爲有很多標題。 –

+1

@YosiDahan:這是一個例子,你可以在那裏檢查你的類型 –

+0

該類型是數組中每個對象所具有的值。我如何分配每個註釋的類型? –

1
Try this, 
annotation1.subtitle = @"1st annotation"; 
    annotation2.subtitle = @"2st annotation"; 
     annotation3.subtitle = @"3st annotation"; 
    Check annotation 
     if ([annotation.subtitle isEqualToString:@"1st annotation"]) 
     { 
      //change color 
     } 
      else if ([annotation.subtitle isEqualToString:@"2st annotation"]) 
      { 
      //change color 
       } 
     else if ([annotation.subtitle isEqualToString:@"3st annotation"]) 
      { 
      //change color 
      } 
1

你可以用經緯度比較東西

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation { static NSString *identifier = @"yourIdentifier"; 
MKPinAnnotationView *pin = (MKPinAnnotationView *) [self.mapView dequeueReusableAnnotationViewWithIdentifier:identifier]; 
if([annotation coordinate].latitude==YourLocationLatitude) 
{ 

    pin.image=[UIImage imageNamed:@"Flag-red.png"]; 
} 
else 
{ 
    pin.image=[UIImage imageNamed:@"Flag-green.png"]; 
}}