Question

我正在尝试实施类似于Touch Up Inside和UIButton的触摸事件。我看过一些使用touchesBegan:withEvent的代码，但看起来我需要在屏幕上滑动一下手指。我其实只想触摸图像

代码：

- (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {   
    NSLog(@"Image touched!");
}

问候！

Answer 1

您可以使用手势来触及UIImageView。

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc]
                         initWithTarget:self action:@selector(ClickEventOnImage:)];
        [tapRecognizer setNumberOfTouchesRequired:2];
        [tapRecognizer setDelegate:self];
        //Don't forget to set the userInteractionEnabled to YES, by default It's NO.
        myImageView.userInteractionEnabled = YES;
        [myImageView addGestureRecognizer:tapRecognizer];

实施ClickEventOnImage功能。

-(void) ClickEventOnImage:(id) sender
{

}

Answer 2

UIImageView因此而臭名昭着，因为userInteractionEnabled默认设置为NO。你必须通过

启用它

imageView.userInteractionEnabled = YES;

然后您可以使用手势识别器或普通touches*方法来处理触摸。

触摸内部以获取UIImageView

2 个答案: