Question

(一) 对一名tab巴view目控制器的首层控制器有这种估计

- (void)viewDidAppear:(BOOL)animated
{
    [UIView animateWithDuration:4.0 delay:0.0 options:UIViewAnimationOptionRepeat | UIViewAnimationOptionCurveLinear animations:^{
        CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI);
        self.rotatingImage.transform = transform;
    } completion:NULL];
}

它很出色地运作,但当从禁忌中改变视力控制器并返回到第一个观察控制器时,就停止了。

https://stackoverflow.com/questions/8489638/ios-uiview-animation-issue”

Answer 1

引证:

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    self.rotatingImage.transform = CGAffineTransformIdentity;
    [UIView animateWithDuration:4.0 delay:0.0 options:UIViewAnimationOptionRepeat | UIViewAnimationOptionCurveLinear animations:^{
        CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI);
        self.rotatingImage.transform = transform;
    } completion:NULL];
}

解释简单明了......在再次发射《估算法》时,UIImage语的转变已经等同于 an语的最终转变。这与将UIImage语的字母从1.0升至1.0相类似,没有任何变化。

Answer 2

Use following code and enjoy...

self.animationyourImageView.transform = CGAffineTransformIdentity;

它将重新启动你们的变革。

希望将有助于你们。

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