objective-c 中的 UIImage 动画

Question

我正在尝试让我的 uiimageview 沿直线水平移动到边界外并从另一侧开始再次循环...这是我在 swift.. 想知道是否有人知道我如何在 objective c?

中实现它

let carSpeed = 20.0 / Double(view.frame.size.width)
let duration: NSTimeInterval = Double(view.frame.size.width - car.frame.origin.x) * carSpeed
UIView.animateWithDuration(duration, delay: 0.0, options: .CurveLinear, animations:
                           {
                               car.frame.origin.x = self.view.bounds.size.width
                           }, completion: {_ in
                               //reset cloud
                               car.frame.origin.x = -self.carImageView.frame.size.width
                               self.animateCars(car)

如果有人知道任何关于 objective C 动画的教程！谢谢！

Answer 1

您可以先设置图片视图的边框

 UIImageView * imageView=[[UIImageView alloc]initWithFrame(x,y,width,height)];

然后按照下面的方法设置帧数

int moveValue=10 // add your desired value

[UIView animateWithDuration:0.25 animations:^{
imageView.frame=CGRectMake(x+moveValue,y,width,height);
} completion:nil];

Answer 2

这是您转换为 Objective-C 的确切代码：

double carSpeed = 20.0 / self.view.frame.size.width;
NSTimeInterval duration = (self.view.frame.size.width - car.frame.origin.x) * carSpeed;

[UIView animateWithDuration:duration
                      delay:0.0
                    options:UIViewAnimationOptionCurveLinear
                 animations:^{
                     car.frame = CGRectMake(self.view.bounds.size.width,
                                            car.frame.origin.y,
                                            car.frame.size.width,
                                            car.frame.size.height);
                 }
                 completion:^(BOOL finished) {
                     if (finished) {
                         car.frame = CGRectMake(-self.carImageView.frame.size.width,
                                                car.frame.origin.y,
                                                car.frame.size.width,
                                                car.frame.size.height);
                         [self animateCars:car];
                     }
                 }];

objective-c 中的 UIImage 动画

animate UIImage in objective-c

animation

objective-c

uiimageview

ios