我在 iOS 8 中遇到了 MKMapview 的一些奇怪行为。 我有自定义 View (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 View Controller
NMView *nv=[[NMView alloc]initWithFrame:CGRectMake(5, 5, 300, 400)];
[self.view addSubview:nv];
现在我使用 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 中测试过它工作正常:
但是在iOS8中,选择注释时整个NMView变为空白。
这是 iOS 8 的错误还是我做错了什么? 请帮忙..
编辑
如果我以编程方式选择注释,那么 iOS 8 中也会出现同样的问题。
[mapView selectAnnotation:annotanimate:YES];
其他人也面临这个问题吗?
iOS8 黑屏。 :
我已在以下网址上传项目: https://drive.google.com/file/d/0BxkVP7smm8Z6SnM1UjBxcjc5aDg/view?usp=sharing
请检查并告诉我..
最佳答案
我不太清楚为什么,但如果你删除这一行,它就会起作用:
self.translatesAutoresizingMaskIntoConstraints=NO;
引用: Views disappear when `translatesAutoresizingMaskIntoConstraints` set `NO`
关于ios - MKMapView 在注释选择 iOS8 上显示空白,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26175061/