ios - cameraOverlayView 上的按钮不起作用

Question

我有以下 cameraOverlayView 在一定程度上工作。当调用 UIImagePickerController 时，标准控件不会显示，'Take Photo' 按钮和 logo.jpg 如 中所述显示>ObViewControllerCameraOverlay。该按钮的功能在于按下时它会变蓝，但我的问题是它不会调用该操作(NSLog 仅用于测试目的)。谁能看出我可能做错了什么？

@implementation ObViewControllerCameraOverlay

- (id)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame])
{
    UIImage *logo = [UIImage imageNamed:@"logo.jpg"];
    UIImageView *logoView = [[UIImageView alloc] initWithImage:logo];
    logoView.frame = CGRectMake(0, 0, 240, 50);
    [self addSubview:logoView];

    UIButton *takePhotoButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [takePhotoButton setTitle:@"Take photo" forState:UIControlStateNormal];
    takePhotoButton.frame = CGRectMake(0, 330, 320, 40);
    [self addSubview:takePhotoButton];
}
return self;
}

- (IBAction)takePhotoButton:(id)sender
{
NSLog(@"test");
}

Answer 1

您似乎没有告诉您的按钮在被点击时调用 takePhotoButton:。尝试添加

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

在 initWithFrame: 中创建按钮后