工程中有一个圆形图片,在前台模式,圆形图片旋转正常,如果按下home键,再重启应用图片就不旋转了。
代码:
CABasicAnimation* animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
animation.fromValue = [NSNumber numberWithFloat: 2*M_PI];
animation.toValue = [NSNumber numberWithFloat:0.0f];
animation.duration = 4.0f;
animation.repeatCount = INFINITY;
[imageLeft.layer addAnimation:animation forKey:@"SpinAnimation"];