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我在注释视图中添加了一个按钮，它显示正确。点击按钮时，我想拨打电话，但是当我点击按钮时，它没有响应（按钮甚至没有突出显示）。按钮似乎没有收到触摸事件，但我不知道为什么。

这是我在 customAnnotationView.m 中的代码

- (id)initWithAnnotation:(id <MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier
{
    NSLog(@"initWithAnnotation start");

    //initialze the view
    self = [super initWithAnnotation:annotation reuseIdentifier:reuseIdentifier];
    if (self != nil)
    {
        CGRect frame = self.frame;
        frame.size = CGSizeMake(60.0, 85.0);
        self.frame = frame;
        self.backgroundColor = [UIColor clearColor];
        self.centerOffset = CGPointMake(30.0, 42.0);
    }

    //this has nothing to do with my question
    self.title=[[[NSString alloc] init] autorelease];
    self.description=[[[NSString alloc] init] autorelease];
    self.phoneNumber=[[[NSString alloc] init] autorelease];
    customAnnotation * tempCust = (customAnnotation *)annotation;       
    self.title=annotation.title;
    self.description=tempCust.description;
    self.phoneNumber=tempCust.phoneNumber;

    //here is the question button
    self.userInteractionEnabled=YES;
    self.exclusiveTouch=NO;
    UIButton *button=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button setTitle:@"Call" forState:UIControlStateNormal];
    //decide the button's position
    CGRect rect=button.frame;
    rect.origin.x=15;
    rect.origin.y=47;
    rect.size.width=40;
    rect.size.height=20;
    button.frame=rect;
    [self addSubview:button];

    [button becomeFirstResponder];

    [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];



    NSLog(@"initWithAnnotation finished");

    return self;
}

//action method
-(void)buttonClicked:(id)sender{
    NSString *callNumber=[[[NSString alloc] initWithFormat:@"tel://%@",self.phoneNumber] autorelease];
    [[UIApplication sharedApplication]openURL:[NSURL URLWithString:callNumber]];
}

为什么按钮不起作用？

4

1 回答 1

1 
self.rightCalloutAccessoryView = button;

使用上面的而不是[self addSubview:button];

希望这对你有帮助

于 2012-12-14T04:28:47.067 回答