旋转动画

Question

我将箭头旋转了45度。动画结束时，箭头返回其原始状态（0度）。我需要箭头不会返回到原始状态，并且在动画结束时它将旋转45度。

CABasicAnimation *fullRotationShort = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
fullRotationShort.fromValue = [NSNumber numberWithFloat:0];
fullRotationShort.toValue = [NSNumber numberWithFloat:M_PI/28*4.7];
fullRotationShort.duration = 1.0f;
fullRotationShort.repeatCount = 1;
[imgViewArrowShort.layer addAnimation:fullRotationShort forKey:nil];

Answer 1

假设您的箭头是名为UIImageView的{​​{1}} 你真的不需要这么复杂的CAAnimations。

arrow

Answer 2

设置属性：

fullRotationShort.fillMode = kCAFillModeForwards;
fullRotationShort.cumulative = YES;
   fullRotationShort.removedOnCompletion=NO;