MKMapView在iOS 8中显示空白屏幕

我有一个在iOS 8中显示MKMapView的问题。

它在iOS 7中工作正常，现在工作正常，但只在模拟器上。

在设备上，它只显示注释，但没有地图背后。

它看起来像这样： http : //imgur.com/rBVWTeD

我得到的错误：

2014-09-24 22:07:15.349 xxx[1509:265380] Stylesheet does not include style matching tree, or includes an old version. Perhaps it was compiled by an old version of the style compiler. 2014-09-24 22:07:15.351 xxx[1509:265380] Please create a radar about this! (Check it's not a dup of rdar://16346611 first though) 2014-09-24 22:07:15.351 xxx[1509:265380] Active tile set: GEOActiveTileSet 

我的代码：

  CLLocationCoordinate2D coord = CLLocationCoordinate2DMake(21.779998, 59.447816); MKCoordinateSpan span = MKCoordinateSpanMake(0.007, 0.007); MKCoordinateRegion region = {coord, span}; MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init]; [annotation setCoordinate:coord]; [annotation setTitle:@"yyy"]; [self.cell.myMapView setRegion:region]; [self.cell.myMapView addAnnotation:annotation]; [self.cell.myMapView setDelegate:self]; 

提前致谢！

Answer 1

将CoreGraphics框架链接到您的目标。 应该解决这个问题