如何让动画在允许下一次用户输入之前完成

Question

我有一些 UIImageViews，当用户触摸时，会开始具有一定持续时间的动画。触发器计数 ++，并在下一次触摸时开始播放另一个动画。 但是，如果用户快速触摸或进行双击，则第一个动画直到最后一帧才会完成。 我尝试了“sleep()”命令，但它不起作用。

    #pragma mark HenneAnimation
    if([touch view] == ani_Henne){

        //trigger strats with zero
        switch (trigHenne) {
            case 0:
//firstanimation 1 sec
                ani_Henne.animationImages = [NSArray arrayWithObjects:
                                             [UIImage imageNamed:@"ani_Henne01.png"],
                                             [UIImage imageNamed:@"ani_Henne01.png"],
                                             [UIImage imageNamed:@"ani_Henne02.png"],
                                             [UIImage imageNamed:@"ani_Henne01.png"],
                                             [UIImage imageNamed:@"ani_Henne01.png"],nil];


                ani_Henne.animationDuration = 1;
                ani_Henne.animationRepeatCount = 1;
                [ani_Henne startAnimating];
                [self.view addSubview:ani_Henne];

                trigHenne++;
                break;

            case 1:
//second animation 1 sec                
                ani_Henne.animationImages = [NSArray arrayWithObjects:

                                             [UIImage imageNamed:@"ani_Henne03.png"],
                                             [UIImage imageNamed:@"ani_Henne05.png"],
                                             [UIImage imageNamed:@"ani_Henne03.png"],
                                             [UIImage imageNamed:@"ani_Henne03.png"],
                                             [UIImage imageNamed:@"ani_Henne04.png"],
                                             [UIImage imageNamed:@"ani_Henne05.png"],
                                             [UIImage imageNamed:@"ani_Henne03.png"],nil];              
                ani_Henne.animationDuration = 3;
                ani_Henne.animationRepeatCount = 1;
            [ani_Henne startAnimating];
                [self.view addSubview:ani_Henne];

                trigHenne++;

                break;

            case 2:
                [self.view bringSubviewToFront:ani_Henne];

                ani_Henne.animationImages = [NSArray arrayWithObjects:
                                             [UIImage imageNamed:@"ani_Henne06.png"],
                                             [UIImage imageNamed:@"ani_Henne07.png"],
                                             [UIImage imageNamed:@"ani_Henne06.png"],
                                             [UIImage imageNamed:@"ani_Henne06.png"],
                                             [UIImage imageNamed:@"ani_Henne08.png"],
                                             [UIImage imageNamed:@"ani_Henne08.png"],
                                             [UIImage imageNamed:@"ani_Henne09.png"],
                                             [UIImage imageNamed:@"ani_Henne08.png"],
                                             [UIImage imageNamed:@"ani_Henne09.png"],
                                             [UIImage imageNamed:@"ani_Henne08.png"],
                                             [UIImage imageNamed:@"ani_Henne07.png"],
                                             [UIImage imageNamed:@"ani_Henne08.png"],
                                             [UIImage imageNamed:@"ani_Henne09.png"],
                                             [UIImage imageNamed:@"ani_Henne08.png"],nil];

                ani_Henne.animationDuration = 2.75;
            ani_Henne.animationRepeatCount = 1;
                [ani_Henne startAnimating];
                [self.view addSubview:ani_Henne];

                trigHenne++;
                break;
            case 3:
                trigHenne=0;
// etc. animations
                break;
            default:
                break;  
        }       
    }

Answer 1

当您开始设置动画时，请禁用用户交互，完成后，重新启用它，如下所示：

yourImageView.userInteractionEnabled = NO;

yourImageView.userInteractionEnabled = YES;

您还可以延迟启用

...
[self performSelector:@selector(enable) withObject:yourImageView afterDelay:1.0];
...


-(void)enable
{
yourImageView.userInteractionEnabled = YES
}

Answer 2

使用 UIApplications beginIgnoringInteractionEvents 和 endIgnoringInteractionEvents 可能会对您有所帮助，当调用 begin 时，用户的 UI 交互事件将被忽略，这里有一个参考 UIApplication 参考