MKMapView setRegion to Annotation

Question

hy guys。如果你願意，我需要一些幫助。當我按下地圖按鈕時，我通過CLLocation屬性加載了一個具有經度和緯度的對象。事情是，我不希望地圖設置區域/中心座標到用戶位置，我希望地圖加載後它去的註釋區域，所以我這樣做：

- (void)loadActiveEstateAnnotation 
{ 
    RE_Annotation *re_annotation = [[RE_Annotation alloc] init]; 

    if(self.mapView.showsUserLocation == YES) 
     NSLog(@"Santa Clause is comming to town"); 

    re_annotation.longitude = viewingEstate.estateLocation.coordinate.longitude; 
    re_annotation.latitude = viewingEstate.estateLocation.coordinate.latitude; 
    re_annotation.poiID = [[RE_Shared sharedInstance] selectedEstate]; 
    re_annotation.title = [NSString stringWithFormat:@"Estate %d",re_annotation.poiID]; 

    [self.mapView addAnnotation:re_annotation]; 

    CLLocationCoordinate2D activeAnnotationCoordonate; 

    activeAnnotationCoordonate.longitude = re_annotation.longitude; 
    activeAnnotationCoordonate.latitude = re_annotation.latitude; 

    MKCoordinateSpan activeEstateSpan; 

    activeEstateSpan.longitudeDelta = 0.05; 
    activeEstateSpan.latitudeDelta = 0.05; 


    MKCoordinateRegion activeEstateRegion; 

    activeEstateRegion.center = activeAnnotationCoordonate; 
    activeEstateRegion.span = activeEstateSpan; 

    NSLog(@"----These are the coordinates%f,%f", activeAnnotationCoordonate.longitude, activeAnnotationCoordonate.latitude); // coordinates are good and valid ive checked them 

    [self.mapView setRegion:activeEstateRegion]; 
    [self.mapView regionThatFits:activeEstateRegion]; 
    [re_annotation autorelease]; 

} 

所以底線mapview outlet不會設置該區域，即使強硬的座標也沒問題。但它確實接受我給出的不同跨度，但仍然始終鎖定在用戶區域上;問題是...爲什麼？

Answer 1

它的發生，因爲你的CLLocationManager類與MKMapView所以在這裏你更新的當前位置，每一次更新位置被設置爲您的MapView

的區域爲制止這種，只需調用此方法..

[yourLocationManager stopUpdatingLocation]; 

在你的loadActiveEstateAnnotation方法開始。