UIViewanimation animationDidStop方法

Question

我使用size (0,0)将一个8 imagaviews添加到我的视图中。现在我想要做的是用一个UIViewanimation一个接一个地拉取每个imageView。我想做两个动画。首先，图像视图的大小应该从(0,0) --> (105,85)转到，完成后，图像视图的大小应该从(105,85) --> (93,75)转到

现在我有了一个方法，我首先把所有的imageViews放在正确的place.All上，图像最后有size (0,0)，我调用这个方法startAnimating

-(void)startAnimating{
    [self animageButton:[arrButtons objectAtIndex:0]];
}

然后是第一个视图动画(从(0,0) --> (105,85) )

-(void)animageButton:(UIImageView *)imgButton{
    loopIndex++;
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:2.0];
    [UIView setAnimationDelegate:self];
    CGRect btnFrame = imgButton.frame;
    btnFrame.size.width = 105;
    btnFrame.size.height = 85;
    [UIView transitionWithView:self.view
                      duration:0.5f
                       options:UIViewAnimationOptionCurveEaseIn
                    animations:^{
                        imgButton.frame = btnFrame;
                    }
                    completion:nil];
    [UIView commitAnimations];
    [self animageButton2:imgButton];


}

这将调用第二个方法(来自(105,85) --> (93,75))

-(void)animageButton2:(UIImageView *)imgButton{

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:2.0];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
    CGRect btnFrame2 = imgButton.frame;
    btnFrame2.size.width = 93;
    btnFrame2.size.height = 75;

    [UIView transitionWithView:self.view
                      duration:0.5f
                       options:UIViewAnimationOptionCurveEaseIn
                    animations:^{
                        imgButton.frame = btnFrame2;
                    }
                    completion:nil];
    [UIView commitAnimations];
}

现在，第一个imageView应该是动画了。现在，当动画结束时。我同意这一点。

-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
    //do smth
    if(loopIndex <= 7){
         NSLog(@"called");
        UIImageView *imgObj = [arrButtons objectAtIndex:loopIndex];
        [self animageButton:imgObj];
    }else{
        NSLog(@"done");
        return;
    }

}

它现在所做的就是同时为所有的图像添加动画。但我希望下一个图像视图在前一个图像视图完成后开始动画。

有人能帮我吗？

Answer 1

-(void)startAnimating
{
    NSTimeInterval delay = 0.0;
    for(UIImageView *imageView in arrButtons)
    {
        [self performSelector:@selector(animageButton:) withObject:imageView afterDelay:delay];
        delay +=1.0;
    }
}

-(void)animageButton:(UIImageView *)imgButton{

    CGRect btnFrame = imgButton.frame;
    btnFrame.size.width = 105;
    btnFrame.size.height = 85;

    [UIView animateWithDuration:0.5f animations:^{
        imgButton.frame = btnFrame;
    } completion:^(BOOL finished) {
            [self animageButton2:imgButton];
    }];
}

-(void)animageButton2:(UIImageView *)imgButton
{
    CGRect btnFrame2 = imgButton.frame;
    btnFrame2.size.width = 93;
    btnFrame2.size.height = 75;

    [UIView animateWithDuration:0.5f animations:^{
        imgButton.frame = btnFrame2;
    } completion:^(BOOL finished) {

    }];
}

我还没有测试代码。如果有任何问题，请告诉我。谢谢。