Xcode 动画延迟

我试图为我的动画设置一个延迟，所以一旦它出现然后消失，我想等待一定的秒数，让它重新出现。我试着在我的代码中把它放在多个地方，但结果都是一样的

 - (void) startRedDot {
    redDotTimer = [NSTimer scheduledTimerWithTimeInterval:1.5
                                                   target:self
                                                 selector:@selector(moveButtonWithAnimation)
                                                 userInfo:nil
                                                  repeats:YES];
    [redDotTimer fire];
}

-(void) moveButtonRandomly {
    CGSize limits;
    CGPoint newPosition;

    // Get limits
    limits.width = gameView.frame.size.width - redButton.frame.size.width;
    limits.height = gameView.frame.size.height - redButton.frame.size.height;

    // Calculate new Position
    newPosition = (CGPoint){ limits.width * drand48(), limits.height * drand48() };

    // Set new frame
    redButton.frame = (CGRect){ newPosition, redButton.frame.size };
}

- (void) moveButtonWithAnimation {
    CGFloat fadeDurration;
    if ( !redButton )
        return; // only invoke the button if it exists
    fadeDurration = 0.0f;


    //Fade Out
    [UIView animateWithDuration: fadeDurration animations:^{
        redButton.alpha = 0.0f;

    } completion:^(BOOL finished) {
        // Move the button while it is not visible
        [self moveButtonRandomly];

        [UIView setAnimationDelay:9.0];

        // Fade in
        [UIView animateWithDuration: fadeDurration animations:^{
            redButton.alpha = 4.0f;
        }];
    }];
}

---

setAnimationDelay应该用在beginAnimation和commitAnimation块中，这是在iOS中制作动画的老方法。在您的情况下，请尝试以下方法：

- (void) moveButtonWithAnimation {
CGFloat fadeDurration;
if ( !redButton )
    return; // only invoke the button if it exists
fadeDurration = 2.0f;


//Fade Out
[UIView animateWithDuration: fadeDurration animations:^{
    redButton.alpha = 0.0f;

} completion:^(BOOL finished) {
    // Move the button while it is not visible
    [self moveButtonRandomly];
    [UIView animateWithDuration:fadeDurration delay:2.0 options:0 animations:^{
        redButton.alpha = 1.0f;
    } completion:nil];
}];

---

}

它说脚本值不是数组对不起，我不明白你的错误是什么？脚本值不是数组？哪一行代码显示该错误？另外，我注意到您将动画的持续时间设置为0.0f。因此，它不会产生动画效果。您的按钮可能会立即出现和消失。我希望它会出现，然后消失，并在屏幕上停留一两秒钟。因此，您需要将fadeDuration设置为2.0f，而不是0.0。此外，alpha值的最大值为1.0，将其设置为4.0没有意义。当前延迟值为9秒，可能太长。