我有容器 View ，我在其中添加了一些图像和按钮。 容器 View 是 UIView 的属性。
我将像这样将容器 View 添加到 ScrollView :
@property (nonatomic,strong) UIView *containerView;
..
containerView = [[UIView alloc] init];
for (int i=0;i<5;i++) {
UIImageView *whiteBack = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 235-height, 385-height-height)];
whiteBack.center = CGPointMake(_scrollView.frame.size.width * i+_scrollView.frame.size.width/2, self.view.bounds.size.height/2-131+height);
whiteBack.backgroundColor = [UIColor darkGrayColor];
whiteBack.layer.cornerRadius = 3;
whiteBack.layer.masksToBounds = YES;
[containerView addSubview:whiteBack];
UIImageView *img = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 228-height, 340-height-height)];
img.center = CGPointMake(_scrollView.frame.size.width * i+_scrollView.frame.size.width/2, self.view.bounds.size.height/2-150+height);
img.image = [UIImage imageNamed:[NSString stringWithFormat:@"poster0%i.jpg",i+1]];
[containerView addSubview:img];
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeCustom];
infoButton.frame = CGRectMake(233, 0, 25, 25);
infoButton.center = CGPointMake(_scrollView.frame.size.width * i+_scrollView.frame.size.width/2-100, 325-height);
[infoButton addTarget:self action:@selector(flipImage:) forControlEvents:UIControlEventTouchUpInside];
infoButton.tag = i;
infoButton.backgroundColor = [UIColor clearColor];
[infoButton setImage:[UIImage imageNamed:@"upload-50"] forState:UIControlStateNormal];
[infoButton setTintColor:[UIColor whiteColor]];
[containerView addSubview:infoButton];
}
[self.scrollView addSubview:containerView];
///
- (void) flipImage :(id) sender {
NSLog(@"infoButton pressed:%i",[sender tag]);
}
但是当我按下按钮时没有任何反应!
最佳答案
您的容器 View 具有零帧(因为您刚刚执行了[[UIView alloc] init];)。这意味着它永远不会受到任何触摸，因为你永远无法击中它。这也适用于 subview 。
您看到 subview 的原因是，默认情况下， View 不会将绘图裁剪到其边界。
要解决此问题，请将容器 View 的框架设置为适合您要添加的 subview 的大小。
关于ios - 添加到容器后不调用按钮，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20615065/