xcode – CABasicAnimation无法使用UIImageView

概述我有一个以编程方式调用的UI ImageView,我试图让它旋转但它不起作用.图像将被放置在动态UITableView中(我无法将其更改为静态).我的表视图中的图像看起来不错,但它不会旋转. - (void)viewDidLoad{ [super viewDidLoad]; UIImageView *imageView = [[UIImageView alloc] initWi 我有一个以编程方式调用的UI ImageVIEw,我试图让它旋转但它不起作用.图像将被放置在动态UItableVIEw中(我无法将其更改为静态).我的表视图中的图像看起来不错,但它不会旋转.

- (voID)vIEwDIDLoad{    [super vIEwDIDLoad];    UIImageVIEw *imageVIEw = [[UIImageVIEw alloc] initWithFrame:CGRectMake(20,122,38,38)];    imageVIEw.image = [UIImage imagenamed:@"settings1.png"];    [self.vIEw addSubvIEw:imageVIEw];    CABasicAnimation *spin;    spin = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];    spin.fromValue = [NSNumber numberWithfloat:0];    spin.tovalue = [NSNumber numberWithfloat:((360*M_PI)/180)];    spin.duration = 4;    spin.repeatCount = 10*1000;    [imageVIEw.layer addAnimation:spin forKey:@"360"];

解决方法 这可能是因为你试图在vIEwDIDLoad中启动动画.我建议重新组织你的代码,使你在vIEwDIDLoad中创建图像视图实例,但是等到vIEwDIDAppear：被调用以实际启动动画.

@property (strong,nonatomic) UIImageVIEw *imageVIEw;

然后

- (voID)vIEwDIDLoad{    [super vIEwDIDLoad];    self.imageVIEw = [[UIImageVIEw alloc] initWithFrame:CGRectMake(20,38)];    self.imageVIEw.image = [UIImage imagenamed:@"settings1.png"];    [self.vIEw addSubvIEw:self.imageVIEw];}- (voID)vIEwDIDAppear:(BOol)animated{    [super vIEwDIDAppear:animated];    CABasicAnimation *spin = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];    spin.fromValue = [NSNumber numberWithfloat:0];    spin.tovalue = [NSNumber numberWithfloat:((360*M_PI)/180)];    spin.duration = 4;    spin.repeatCount = 10*1000;    [self.imageVIEw.layer addAnimation:spin forKey:@"360"];}

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