ios - IOS/Objective-C:360图像旋转问题

Question

我正在尝试以一定间隔重复旋转图像(360)。我发现这个答案(Image rotation in iOS)似乎还可以，但是对我来说不起作用。当我加载VC时，我可以看到轻微的移动，仅此而已。有任何想法吗？我正在使用的代码:

 - (void)viewDidAppear:(BOOL)animated {
    [self.compass setTransform:CGAffineTransformMakeRotation(10*(M_PI/360))];


    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(rotation) userInfo:nil repeats:YES];

}
-(void)rotation{
    [self.compass setTransform:CGAffineTransformMakeRotation(10*(M_PI/360))];

}

编辑:

- (void)viewDidAppear:(BOOL)animated {
    [self.compass setTransform:CGAffineTransformMakeRotation(10*(M_PI/360))];


    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(rotation) userInfo:nil repeats:YES];

}
-(void)rotation{
    [self.compass setTransform:CGAffineTransformMakeRotation(10*(M_PI/360))];
    CGAffineTransform transform = CGAffineTransformRotate(self.compass.transform, 10*(M_PI/360));
    [self.compass setTransform:transform];
}

Answer 1

使旋转动画如下:

[UIView animateWithDuration:0.3 animations:^{
        compas.transform = CGAffineTransformMakeRotation(M_PI/2);
    }];