Touchesbegan和touchesmoved函数无法在UIImageView上运行

Question

我在我的FYImageSequence.m文件中有这两个函数.我从UIImageView继承了这个类

@interface FVImageSequence : UIImageView

我能够在故事板中将它连接到我的UIImageView.但是如何使下面的功能工作.是否有任何连接应该完成.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
if(increment == 0)
    increment = 1;
    [super touchesBegan:touches withEvent:event];

    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchLocation = [touch locationInView:self];
    previous = touchLocation.x;
}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[super touchesMoved:touches withEvent:event];

    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchLocation = [touch locationInView:self];
int location = touchLocation.x;

if(location < previous)
    current += increment;
else
    current -= increment;

previous = location;

if(current > numberOfImages)
    current = 0;
if(current < 0)
    current = numberOfImages;

NSString *path = [NSString stringWithFormat:@"%@%d", prefix, current];
NSLog(@"%@", path);

path = [[NSBundle mainBundle] pathForResource:path ofType:extension];


UIImage *img =  [[UIImage alloc] initWithContentsOfFile:path];

[self setImage:img];
}

Answer 1

用户交互UIImageView默认为NO.所以,你需要使它是这样的

self.userInteractionEnabled = YES;