MKMapView在注解选择iOS8上显示空白

我在iOS 8中遇到了MKMapview的一些奇怪行为。我有一个自定义视图（UIView的子类），其中包含MKMapview。

NMView -> MKMapView

NMView代码

#import "NMView.h"

@implementation NMView

@synthesize mapView;
- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        frame=self.bounds;
        self.translatesAutoresizingMaskIntoConstraints=NO;
        mapView=[[MKMapView alloc]initWithFrame:frame];
        mapView.showsUserLocation=YES;
        [mapView setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
        [self setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
        mapView.delegate=self;
        [self addSubview:mapView];
        self.backgroundColor=[UIColor grayColor];
    }
    return self;
}
-(void)addCustomAnnotaion:(id<MKAnnotation>)annot{
  MKCoordinateRegion region=MKCoordinateRegionMake(annot.coordinate, MKCoordinateSpanMake(10.0f, 10.0f));
   [mapView setRegion:region];
    [mapView addAnnotation:annot];
   // [mapView selectAnnotation:annot animated:YES];
}

- (MKAnnotationView *)mapView:(MKMapView *)mapViews viewForAnnotation:(id <MKAnnotation>)annotation
{

    if ([annotation isKindOfClass:[MKUserLocation class]]){
        return nil;
    }
    static NSString * const identifier = @"MyCustomAnnotation";
    MKAnnotationView* annotationView = (MKAnnotationView*)[mapViews dequeueReusableAnnotationViewWithIdentifier:identifier];

    if (annotationView){
        annotationView.annotation = annotation;
    }
    else{
        annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
        annotationView.canShowCallout = YES;
        UIView *rightView=[[UIView alloc]initWithFrame:CGRectMake(5, 0, 80,50)];
        rightView.backgroundColor=[UIColor clearColor];

        UIButton* edit = [UIButton buttonWithType:UIButtonTypeCustom];
        [edit setImage:[UIImage imageNamed:@"editPOI"] forState:UIControlStateNormal];
        [edit addTarget:self action:@selector(editPoi:) forControlEvents:UIControlEventTouchUpInside];
        edit.backgroundColor=[UIColor clearColor];
        edit.frame=CGRectMake(15, 5, 30,30);

        UIButton* delButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [delButton setImage:[UIImage imageNamed:@"deletePOI"] forState:UIControlStateNormal];
        [delButton addTarget:self action:@selector(deletePoi:) forControlEvents:UIControlEventTouchUpInside];
        delButton.backgroundColor=[UIColor clearColor];
        delButton.frame=CGRectMake(55, 5, 30,30);

        [rightView addSubview:delButton];
        [rightView addSubview:edit];

        UIImageView *imgviewIcon=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 30, 30)];
        [imgviewIcon setImage:[UIImage imageNamed:@"pin.png"]];
        [annotationView setImage:[UIImage imageNamed:@"pin.png"]];
        [annotationView layoutIfNeeded];
        annotationView.leftCalloutAccessoryView=imgviewIcon;
        annotationView.rightCalloutAccessoryView=rightView;

    }

    return annotationView;

}
-(IBAction)editPoi:(id)sender{
    //edit
}
-(IBAction)deletePoi:(id)sender{
    //delete
}

我正在将NMView添加到我的视图控制器

NMView *nv=[[NMView alloc]initWithFrame:CGRectMake(5, 5, 300, 400)];
[self.view addSubview:nv];

现在，我要使用NMView的自定义方法向mapview添加注释，

MKPointAnnotation *point=[[MKPointAnnotation alloc]init];
point.coordinate=pinCoordinate;
point.title=@"test";
[nv addCustomAnnotaion:point];

我已经在iOS7中对其进行了良好的测试：

但是在iOS8中，在选择注释时，整个NMView变为空白。

是iOS 8的错误，还是我做错了？请帮忙..

编辑

如果我以编程方式选择注释，则在iOS 8中也会出现相同的问题。

[mapView selectAnnotation:annot animated:YES];

其他人会面对这个问题？

iOS8黑屏。：

我已在以下网址上上传了项目：https : //drive.google.com/file/d/0BxkVP7smm8Z6SnM1UjBxcjc5aDg/view? usp =sharing

请检查一下让我知道..