UIImageView为按钮 [英] UIImageView as button

问题描述

我想让一个UIImageView接受动作，并在每次点击UIImageVie时激活它，但我很难让它工作，请帮助我。

I'm trying to make a UIImageView accept actions and fire them everytime it clicked on the UIImageVie, but i'm having hard time in getting it to work, please help me out

但这里是我在做什么：

[View setUserInteractionEnabled:YES];

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


- (void) myAction:(id)sender
{
    NSLog(@"It works!");
}

推荐答案

Objective-C

在 viewDidLoad：方法中写入：

-(void)viewDidLoad {

    UIImageView *imageview = [[UIImageView alloc]initWithFrame:CGRectMake(100.0, 100.0, 100.0, 100.0)];
    [imageview setImage:[UIImage imageNamed:@"image.png"]];
    [imageview setUserInteractionEnabled:YES];

    UITapGestureRecognizer *singleTap =  [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapping:)];
    [singleTap setNumberOfTapsRequired:1];
    [imageview addGestureRecognizer:singleTap];

    [self.view addSubview:imageview];
}

然后按以下方式调用您的手势方法：

Then call your gesture method like this:

-(void)singleTapping:(UIGestureRecognizer *)recognizer {
    NSLog(@"image clicked");
}

Swift

override func viewDidLoad() {
    super.viewDidLoad()

    let imageView: UIImageView = UIImageView(frame: CGRectMake(100.0, 100.0, 100.0, 100.0))
    imageView.image = UIImage(named: "image.png")
    imageView.userInteractionEnabled = true

    let singleTap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(BaseVC.singleTapping(_:)))
    singleTap.numberOfTapsRequired = 1;
    imageView.addGestureRecognizer(singleTap)

    self.view.addSubview(imageView)
}

func singleTapping(recognizer: UIGestureRecognizer) {
    print("image clicked")
}

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