触摸内部以获取UIImageView

Question

我正在尝试实现类似于UIButton Touch Up Inside的Touch Up Inside触摸事件。 我看过一些使用touchesBegan:withEvent代码touchesBegan:withEvent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

码：

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

问候！

Answer 1

您可以使用手势触摸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];

实现ClickEventOnImage函数。

-(void) ClickEventOnImage:(id) sender
{

}

Answer 2

UIImageView因此而臭名昭着，因为默认情况下userInteractionEnabled设置为NO 。 你必须通过这样做来启用它

imageView.userInteractionEnabled = YES;

然后您可以使用手势识别器或常规touches*方法来处理触摸。