ios - UIButton 移动动画

Question

我想知道是否可以创建一个 UIButton 动画，使按钮在屏幕中快速滑动，到达中心时减慢，然后在另一侧加速退出屏幕。不必按下按钮，所以我使用:

userInteractionEnabled = NO;

这是我尝试做的:

UIButton* buttonNumberCountTutorial = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[buttonNumberCountTutorial setTitle:@"2" forState:UIControlStateNormal];
[buttonNumberCountTutorial setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[buttonNumberCountTutorial.titleLabel setFont:[UIFont fontWithName:@"Zapfino" size:40]];
buttonNumberCountTutorial.frame = CGRectMake(-400, 430, 400, 400);
[buttonNumberCountTutorial setBackgroundImage:[UIImage imageNamed:@"socialize-navbar-bg.png"]forState:UIControlStateNormal];
[baseView addSubview:buttonNumberCountTutorial];
[UIView animateWithDuration:1.9f
                 animations:^{

        buttonNumberCountTutorial.frame = CGRectMake(20, 430, 200, 200);

        }
              completion:^(BOOL finished){

                  [buttonNumberCountTutorial removeFromSuperview];
    }];

Answer 1

您可以定义动画选项。适合您的有趣选项

UIViewAnimationOptionCurveEaseInOut
UIViewAnimationOptionCurveEaseIn 
UIViewAnimationOptionCurveEaseOut
UIViewAnimationOptionCurveLinear

您需要使用以下 UIView 的类方法才能使用这些选项

+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion

当然，您可以通过在完成 block 中启动新动画来制作嵌套动画。