iOS Mapkit-SetRegion錯誤

Question

您能指出我這段代碼有什么問題嗎？

-(void) showStoreRegion:(NSInteger)idx
{

    //StoreLocation* store = [self.listStore objectAtIndex:idx];

    //self.coordinate = CLLocationCoordinate2DMake(store.latitude,store.longitude);

    self.coordinate = CLLocationCoordinate2DMake(10.7500,106.6667);

    MKCoordinateRegion region;
    MKCoordinateSpan span;
    span.latitudeDelta  = 0.001;
    span.longitudeDelta = 0.001;

    region.span = span;
    region.center = self.coordinate;


    [theMapView setRegion:region animated:TRUE];
    [theMapView regionThatFits:region];


    [self addAnns];

} 

運行此代碼時，我收到此消息“由於未捕獲的異常'NSInvalidArgumentException'而終止應用程序，原因：'無效區域'“

Answer 1

您尚未正確初始化您的區域。 嘗試這個

MKCoordinateSpan span = MKCoordinateSpanMake(0.001,0.001);
MKCoordinateRegion region = MKCoordinateRegionMake(self.coordinate, span)