如何在ios中隐藏图像视图？

Question

我有图像视图，如果单击按钮说话tom cat将播放animationRepeatCount：2，此后，我想隐藏图像视图。如何隐藏图像视图？

    - (IBAction)catBlinkButton:(UIButton *)sender {
    self.imageView.hidden = NO;
    self.imageView.animationDuration = 2;
    self.imageView.animationRepeatCount = 2;
    self.imageView.animationImages = [[NSArray alloc]initWithObjects:
                                      [UIImage imageNamed:@"cat_blink0000.png"],
                                      [UIImage imageNamed:@"cat_blink0001.png"],
                                      [UIImage imageNamed:@"cat_blink0002.png"],
                                      nil];

    [self.imageView startAnimating];

}

这是我的代码......

Answer 1

您可以简单地使用CATransaction，如：

self.imageView.hidden = NO;

[CATransaction begin];

[CATransaction setCompletionBlock:^{

    self.imageView.hidden = YES;

}];

self.imageView.animationDuration = 2;
self.imageView.animationRepeatCount = 2;
self.imageView.animationImages = [[NSArray alloc]initWithObjects:
                                  [UIImage imageNamed:@"cat_blink0000.png"],
                                  [UIImage imageNamed:@"cat_blink0001.png"],
                                  [UIImage imageNamed:@"cat_blink0002.png"],
                                  nil];

[self.imageView startAnimating];

[CATransaction commit];

CATransaction将动态等待动画完成...

Answer 2

您可以在主线程上执行平板后的代码。

- (IBAction)catBlinkButton:(UIButton *)sender {

    self.imageView.hidden = NO;
    self.imageView.animationDuration = 2;
    self.imageView.animationRepeatCount = 2;
    self.imageView.animationImages = [[NSArray alloc]initWithObjects:
                                      [UIImage imageNamed:@"cat_blink0000.png"],
                                      [UIImage imageNamed:@"cat_blink0001.png"],
                                      [UIImage imageNamed:@"cat_blink0002.png"],
                                      nil];

    [self.imageView startAnimating];

    // after 2 seconds.
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 2 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{

        // hide imageview
        self.imageView.hidden = YES;
    });
}

Answer 3

你可以使用UIView的隐藏属性来做到这一点。 imageView.hidden = true;

Answer 4

- (IBAction)catBlinkButton:(UIButton *)sender {
self.imageView.hidden = NO;
self.imageView.animationDuration = 2;
self.imageView.animationRepeatCount = 2;
self.imageView.animationImages = [[NSArray alloc]initWithObjects:
                              [UIImage imageNamed:@"cat_blink0000.png"],
                              [UIImage imageNamed:@"cat_blink0001.png"],
                              [UIImage imageNamed:@"cat_blink0002.png"],
                              nil];

[self.imageView startAnimating];
}