Ios 实现类似应用图标的行为

我想实现一个应用程序图标（在主屏幕上）一样的行为。所以我需要两个功能

长按时摆动并显示删除图标

按delete（删除）图标并删除视图

我可以通过这个代码的人正确地得到1号

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
    [longPress setMinimumPressDuration:1];
    [view addGestureRecognizer:longPress];

- (void)longPress:(UILongPressGestureRecognizer*)gesture {
    if ( gesture.state == UIGestureRecognizerStateBegan ) {
        CGAffineTransform leftWobble = CGAffineTransformRotate(CGAffineTransformIdentity, RADIANS(-5));
        CGAffineTransform rightWobble = CGAffineTransformRotate(CGAffineTransformIdentity, RADIANS(5.0));
        view.transform = leftWobble;  // starting point


        UIButton *deleteButton = [UIButton buttonWithType:UIButtonTypeCustom];

        deleteButton.frame = CGRectMake(-4, 0, 43, 54);
        [view addSubview: deleteButton];
        [view bringSubviewToFront:deleteButton];
        [deleteButton setBackgroundImage:[UIImage imageNamed:@"trashcan.png"] forState:UIControlStateNormal];
        [deleteButton addTarget:self action:@selector(deletePressed:) forControlEvents:UIControlEventTouchUpInside];

        [UIView animateWithDuration:0.5 delay:0 options:( UIViewAnimationOptionAutoreverse|UIViewAnimationOptionRepeat|UIViewAnimationOptionCurveEaseInOut) animations:^{
            view.transform = rightWobble;
        }completion:^(BOOL finished){
            view.transform = CGAffineTransformIdentity;
        }];
    }
}

---

现在我希望当视图不稳定并且按下delete按钮时，deletePressed会被触发。但这永远不会触发。请帮我找出哪里出了问题。

我为这件事伤了脑筋，因为这对我来说毫无意义。然后我注意到代码在

UIView animateWithDuration

块之前一直在工作

显然还有一个默认设置为“否”的

UIViewAnimationOptionAllowUserInteraction

选项。将您的代码更改为此，您应该可以：

[UIView animateWithDuration:0.2 delay:0 options:( UIViewAnimationOptionAutoreverse|UIViewAnimationOptionRepeat|UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionAllowUserInteraction) animations:^{
            view.transform = rightWobble;
        }completion:^(BOOL finished){
            view.transform = CGAffineTransformIdentity;
        }];

另外，如果它仍然不起作用，并且您的视图是UIImageView，则设置

view.userInteractionEnabled=YES

我的工作代码如下所示：

---

在提供动画时，应添加用户交互选项

[UIView animateWithDuration:0.5 delay:0 options:
     (UIViewAnimationOptionAutoreverse|
      UIViewAnimationOptionRepeat|
      UIViewAnimationOptionCurveEaseInOut| 
      UIViewAnimationOptionAllowUserInteraction) 
      animations:^{
            view.transform = rightWobble;
            }completion:^(BOOL finished){
                 view.transform = CGAffineTransformIdentity;
            }];

这是因为摇摆效应