ios - UIView 中的 Button 没有调用 IBAction

Question

我已经为带有按钮的自定义标注创建了一个 View 。单击 Mapview 上的任何注释时会显示此自定义标注。但是当我点击自定义标注内的按钮时没有任何反应。

#import <UIKit/UIKit.h>

@interface TestView : UIView


@end

#import "TestView.h"

@implementation TestView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}

-(IBAction)showMessage:(id)sender
{
    NSLog(@"Test");
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    // Drawing code
}
*/

@end

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view {
    if(![view.annotation isKindOfClass:[MKUserLocation class]]) {

        CGRect rect = CGRectMake(0,0,268,140);

        TestView *testview = [[TestView alloc] initWithFrame:rect];

        testview = [self loadNibNamed:@"TestView" ofClass:[TestView class]];


        [view addSubview:testview];
    }
}

View 是使用 loadNibNamed 方法加载的。

- (id)loadNibNamed:(NSString *)nibName ofClass:(Class)objClass {
    if (nibName && objClass) {
        NSArray *objects = [[NSBundle mainBundle] loadNibNamed:nibName owner:nil options:nil];

        for (id currentObject in objects ){
            if ([currentObject isKindOfClass:objClass])
                return currentObject;
        }
    }

    return nil;
}

我已经检查了 View 和 Button 的 userInteractionEnabled 属性，两者都设置为 true。

还将 showMessage 映射到按钮的 Touch Up Inside 事件。

关于我如何识别这个问题有什么建议吗？

Answer 1

尝试使用下面的静态方法获取TestView

+ (TestView *)getNewTestView {
    TestView *view = nil;
    NSArray *xib = [[NSBundle mainBundle] loadNibNamed:@"TestView" owner:nil options:nil];
    for (NSObject *obj in xib) {
        if ([obj isKindOfClass:[TestView class]]) {
            view = (TestView *)obj;
        }
    }
    return view;

然后，要获取对象的实例，请使用:

 TestView *testView = [TestView getNewTestView];
 [self.view addSubview:testView];