定製標註泡沫的MKMapView

Question

我所想要做的是創造的MKMapView自定義標註泡沫，只是因爲它是在http://blog.asolutions.com/2010/09/building-custom-map-annotation-callouts-part-1/解釋，但似乎有在原本很好地完成應用程序的一些錯誤。例如，當您將自定義標註氣泡打開並滾動時，在某個點上，地圖會滾動回打開的標註。縮放有時也會觸發此錯誤。有沒有人能夠解決這些問題？對不起創建一個新問題（因爲有一對夫婦正在處理自定義標註泡泡），但我沒有足夠的代表點來回答評論。

Answer 1

解決方法是在CalloutMapAnnotationView：didMoveToSuperview， 如果我們取消選擇註釋，則不要調用adjustMapRegionIfNeeded。

所以我修正它的方式是在我的mapViewController：didDeselectAnnotationView中，我從MapView中刪除了Annotation之前，將一個非零標記值賦給BasicMapAnnotationView。我選擇了159.

- (void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view { 

// distinguish between the map deselecting this and the user tapping on the callout. 
// in the former case, we want to deselect as normal; latter case, show coupon detail. 

if ([view isKindOfClass:[BasicMapAnnotationView class]]) { 
    if (((BasicMapAnnotationView *)view).calloutMapAnnotation) { 
     if (!((BasicMapAnnotationView *)view).preventSelectionChange) { 
      ((BasicMapAnnotationView *)view).tag = 159; // prevent adjusting map - see CalloutMapAnnotationView 
      [mapView removeAnnotation: ((BasicMapAnnotationView *)view).calloutMapAnnotation]; 
      // if we're deselecting the currently selected one, null out self.selectedAnnotationView 
      // Otherwise, the map view is deselecting this one in order to select another one 
      // and the timing is such that this nulling happens first, and the newly set AV would have no value for this. 
      if ((BasicMapAnnotationView *)view == self.selectedAnnotationView) { 
       self.selectedAnnotationView=nil; 
      } 
      ((BasicMapAnnotationView *)view).calloutMapAnnotation = nil; 
     } 
    } 
} 
} 

然後，在CalloutMapAnnotationView中，我檢查這個值，如果找到了，我不調整地圖。

- (void)didMoveToSuperview { 
if (self.parentAnnotationView) { 
    if (self.parentAnnotationView.superview) { 
     // null superview means it's been removed from map, and adjustMap gets wrong parentOrigin based on null superview, 
     // and recenters the map somewhere in Antarctica. The Ross Ice Shelf has no coupons except for frozen penguin eggs. 

     if (self.parentAnnotationView.tag != 159) {// Don't adjust map region on deselect. 
                //159 hardcoded in MapViewController:didDeselectAnnotationView 
      [self adjustMapRegionIfNeeded]; 
     } 
     [self animateIn]; 
    } 
} 
}