iOS - 移动图像时旋转图像

Question

我使用 NSTimer移动 UIImageView , 插入 UIView动画有几个原因。我还必须在它移动时旋转它。是否可以？一些示例代码？
谢谢

Answer 1

对 View 应用变换

- (void)viewDidAppear:(BOOL)animated {
    self.imageView.contentMode = UIViewContentModeScaleAspectFit; //if not set in xib it must be set here
    [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(move:) userInfo:nil repeats:YES];
}

- (void)move:(id)timer {
    CGRect f = self.imageView.frame;
    static CGFloat angle = 1;

    f.origin.x += 5;
    f.origin.y += 10;
    self.imageView.frame = f;

    self.imageView.transform = CGAffineTransformMakeRotation(angle); //!!!
    angle += 10;
}