有人帮忙!
这是我想要实现的:
- 当 UIImageView 变为 alpha 0(隐藏)时
- 可以触摸
- 使其 alpha 变为 1(未隐藏)。
但是 UIImageView 在动画时没有被触及(=成为 alpha 0)。
我在stackoverflow上尝试了一百种技能,但没有奏效。
他们是.......
- UIViewAnimationOptionAllowUserInteraction
- 设置用户交互启用:是的;
- 接触开始
- 手势识别器选项
- ETC..
只有功能“hitTest”有效,但在动画期间无效。
请回复 。谢谢你。下面是我的代码。
#import "ViewController.h"
#define AD @"text.png"
#import <QuartzCore/QuartzCore.h>
@interface ViewController ()
@end
@implementation ViewController
@synthesize scrollData=_scrollData;
@synthesize adImage=_adImage;
- (void)viewDidLoad
{
//_adImage is UIImageView
_adImage=[[adImage alloc] initWithImage:[UIImage imageNamed:AD]];
_scrollData.scrollView.delegate = self;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapGestureCaptured:)];
[_adImage addGestureRecognizer:singleTap];
[_adImage setMultipleTouchEnabled:YES];
[_adImage setUserInteractionEnabled:YES];
[self.view addSubview:_adImage];
_adImage.alpha=0;
[_adImage setUp_pt:CGPointMake(160,250)];
_adImage.center=_adImage.up_pt;
[super viewDidLoad];
[self hideImage:_adImage delay:0];
[self becomeFirstResponder];
}
- (void)hideImageComplete:(UIView*)v
{
[self hideImage:v delay:0];
}
- (void)hideImage:(UIImageView*)v delay:(int)nDelay
{
[_adImage becomeFirstResponder];
[UIView animateWithDuration:1
delay:nDelay
options:
(UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction)
animations: ^
{
_adImage.alpha=0.0f;
}
completion:^(BOOL completed){
[self hideImageComplete:v];
}];
}
- (void)singleTapGestureCaptured:(UITapGestureRecognizer *)gesture
{
NSLog(@"Gesture event on view");
_adImage.alpha=1;
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
return YES;
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
NSLog(@"hit!!");
[super touchesBegan:touches withEvent:event];
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self.view];
CGPoint touchLocation = [touch locationInView:self.view];
_adImage.alpha=1;
}
@end
@implementation adImage
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:self];
if ([[[self layer] presentationLayer] hitTest:touchPoint]) {
[self.layer removeAllAnimations];
}
}
-(UIView*)hitTest:(CGPoint)point withEvent:(UIEvent *)event{
if ([[self.layer presentationLayer] hitTest:point]) {
NSLog(@"hit!!");
self.alpha=1;
return self;
}
return [super hitTest:point withEvent:event];
}
@synthesize up_pt;
@end
这是我的 ViewController.h 代码。
#import <UIKit/UIKit.h>
@interface adImage : UIImageView {
}
//@property (strong, nonatomic) UIImageView *imageView;
@property (assign)CGPoint up_pt;
@end
@interface ViewController : UIViewController <UIScrollViewDelegate>{
}
- (void)hideImageComplete:(UIView*)v;
- (void)hideImage:(UIView*)v delay:(int)nDelay;
@property (strong, nonatomic) adImage *adImage;
@property(nonatomic, strong) IBOutlet UIWebView *scrollData;
@end