UITouches 未检测到

Question

在我的幻灯片 nib 文件中未检测到我的 UItouches。问题是什么？有人可以帮忙吗？

---

@class Slideshow;
@interface RootViewController : UIViewController{
PreferencesController *preferencesController;
Slideshow *slideshow;}

幻灯片实现

@implementation Slideshow
- (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
NSLog(@"touches begin");
}
- (void)viewDidLoad
{

UIImageView *frontView = [[UIImageView alloc] initWithFrame:self.view.bounds];
frontView.backgroundColor = [UIColor blackColor];
frontView.image = [UIImage imageNamed:@"apple.png"];
frontView.userInteractionEnabled = YES;

[self.view addSubview:frontView];

[frontView release];
}@end

Answer 1

幻灯片是UIViewController，而touchesBegan 仅在UIView 上调用。你需要继承 UIView 来捕捉触摸。