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AnUIButton设置为rightCalloutAccessoryView的MKPinAnnotationView，并触发btnClicked:方法。在 iOS6 中，MKAnnotationView可以rightCalloutAccessoryView很方便地MKPinAnnotationView通过 MKPinAnnotationView *pin = (MKPinAnnotationView *)[[button superview] superview];. 但是在iOS7中，布局关系已经不存在了。

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

MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:tripStartAddrAnnotationIdentifier];
    if (!pinView)
    {            
        MKPinAnnotationView *customPinView = [[MKPinAnnotationView alloc]
                                              initWithAnnotation:annotation reuseIdentifier:tripStartAddrAnnotationIdentifier];
        customPinView.animatesDrop = NO;
        customPinView.canShowCallout = YES;

        UIButton* rightButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 32, 32)];
        [rightButton setImage:[UIImage imageNamed:@"disclosureUpMap.png"] forState:UIControlStateNormal];
        [rightButton setImage:[UIImage imageNamed:@"disclosureDownMap.png"] forState:UIControlStateNormal];

        [rightButton addTarget:self
                        action:@selector(btnClicked:)
              forControlEvents:UIControlEventTouchUpInside];
        customPinView.rightCalloutAccessoryView = rightButton;

        return customPinView;
    }
    else
    {
        pinView.annotation = annotation;
    }
    return pinView;
...
}


-(void)btnClicked:(id)sender{
    NSLog(@"superview 1 :%@",[sender superview]);
    NSLog(@"superview 2 :%@",[[sender superview] superview]);
    NSLog(@"superview 3 :%@",[[[sender superview] superview] superview]);
    NSLog(@"superview 4 :%@",[[[[sender superview] superview] superview] superview]);
    MKPinAnnotationView *pin = (MKPinAnnotationView *)[[sender superview] superview];
    // the information contains in pin.annotation is necessary for the pushed view controller
...    
}

iOS6 的日志：

2013-09-30 01:21:11.851 MyApp[6113:c07] superview 1 :<UICalloutView: 0x1e3df250; frame = (-246 -60; 320 70); clipsToBounds = YES; layer = <CALayer: 0x1e3e0140>>
2013-09-30 01:21:11.851 MyApp[6113:c07] superview 2 :<MKPinAnnotationView: 0x1b649510; frame = (526 223; 32 39); layer = <MKLayer: 0x1b649570>> visible:1 +33.19910200, +120.45132100
2013-09-30 01:21:11.852 MyApp[6113:c07] superview 3 :<MKAnnotationContainerView: 0xb68b380; frame = (0 0; 640 640); autoresizesSubviews = NO; layer = <CALayer: 0xb68b410>>
2013-09-30 01:21:11.852 MyApp[6113:c07] superview 4 :<MKScrollContainerView: 0xb68c8f0; frame = (-280 -72.5; 640 640); autoresizesSubviews = NO; layer = <CALayer: 0xb68c980>>

iOS7 的日志：

2013-09-30 01:44:22.835 MyApp[6226:a0b] superview 1 :<_MKSmallCalloutContainerView: 0xdbe5120; frame = (0 0; 222 44); clipsToBounds = YES; layer = <CALayer: 0xdbe1f30>>
2013-09-30 01:44:22.836 MyApp[6226:a0b] superview 2 :<MKSmallCalloutView: 0x1c53a380; frame = (0 0; 222 57); layer = <CALayer: 0x1c546440>>
2013-09-30 01:44:22.837 MyApp[6226:a0b] superview 3 :<UIView: 0xdb14770; frame = (0 0; 222 57); clipsToBounds = YES; layer = <CALayer: 0xdb147d0>>
2013-09-30 01:44:22.837 MyApp[6226:a0b] superview 4 :<_UIPopoverView: 0xdbfa4c0; frame = (-27 -57; 222 57); layer = <CALayer: 0xdbfa5a0>>

任何帮助将不胜感激。

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1 回答 1

4

这是使用地图视图自己的委托方法calloutAccessoryControlTapped而不是自定义方法的重要原因。

即使 superview 方法在 iOS 6 或更早版本中有效，依赖特定的视图层次结构通常也是一个坏主意。

委托方法方便地提供对注释视图的引用，您可以从中获取注释view.annotation（无需猜测或希望或假设）。

删除 addTarget 并将自定义方法替换为委托方法。

如果您必须selectedAnnotations使用自定义方法而不是委托方法，那么从地图视图的属性中获取选定的注释而不是寻找超级视图更可靠。

于 2013-09-29T21:26:42.427 回答