带有自动布局的MKMapView自定义callOutView iOS 6与iOS7

Question

嘿伙计们，

如果我在标注视图中使用自动布局，我的应用程序就会在MKMapView 6下崩溃。使用iOS 7，这是很好的工作。

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view {
CustomMapAnnotation *annotation = (CustomMapAnnotation *)view.annotation;

if([annotation isKindOfClass:[CustomMapAnnotation class]]) {
    CustomMapCalloutView *calloutView = [CustomMapCalloutView new];
    calloutView.translatesAutoresizingMaskIntoConstraints = NO;

    calloutView.titleLabel.text = annotation.titleText;
    calloutView.subTitleLabel.text = annotation.subTitleText;
    calloutView.distanceTextLabel.text = annotation.distanceText;

    [view addSubview:calloutView];

    NSDictionary *viewsDictionary = @{@"callOutView": calloutView};
    NSArray *hConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:[callOutView(150)]" options:0 metrics:nil views:viewsDictionary];
    NSArray *vConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:[callOutView(50)]" options:0 metrics:nil views:viewsDictionary];

    NSLayoutConstraint *xConstraint = [NSLayoutConstraint constraintWithItem:calloutView attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:view attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0.0];
    NSLayoutConstraint *yConstraint = [NSLayoutConstraint constraintWithItem:calloutView attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:view attribute:NSLayoutAttributeTop multiplier:1.0 constant:0.0];

    [view addConstraint:xConstraint];
    [view addConstraint:yConstraint];

    [view addConstraints:hConstraints];
    [view addConstraints:vConstraints];
}}

控制台显示以下错误：

/SourceCache/UIKit_Sim/UIKit-2380.17/UIView.m:5776 2013-27 13:39:18.519 Layout烈士9825:907 *终止应用程序，原因是：“执行-layoutSubviews之后仍然需要自动布局。MKAnnotationView实现-layoutSubviews需要调用Super.”。

有人能告诉我问题出在哪里吗？CustomCalloutView也适用于自动布局，我不会在其中覆盖layoutSubviews。

Answer 1

这个SO Answer指向了我正确的方向。我在MKAnnotationView上创建了一个类别，覆盖了layoutSubviews方法并调用了超级方法。

这也适用于iOS 7。