移动和动画UIView

Question

我正在尝试制作一个简单的动画.我想通过使用[UIView animateWithDuration ....将UIImageView移动到右侧.

这是我的代码:

file.h

{
 IBOutlet UIImageView *moveImage;
}

file.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    //Move Image

    moveImage.center = CGPointMake(moveImage.center.x, moveImage.center.y);
    [UIView animateWithDuration:2.0
                     animations:^{ moveImage.center = CGPointMake(moveImage.center.x + 60.0, moveImage.center.y); }];

}

当我运行iOS模拟器时,它会在新的x坐标处显示图像,但不会显示动画.任何帮助将不胜感激.先感谢您.

Answer 1

您应该使用ViewDidAppear Not ViewDidLoad

ViewDidLoad表示View已加载到内存中,但未绘制.所以你在那时看不到动画.

viewDidAppear表示已绘制视图.因此,您可以在显示视图后进行动画处理.

-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];


        moveImage.center = CGPointMake(moveImage.center.x, moveImage.center.y);
        [UIView animateWithDuration:2.0
                         animations:^{ moveImage.center = CGPointMake(moveImage.center.x + 60.0, moveImage.center.y); }];

}