视图自定义旋转动画 类似百度音乐

@interface FirstViewController ()

@property (nonatomic,assign)BOOL isplay;

@end

@implementation FirstViewController

@synthesize isplay;

- (void)viewDidLoad

{

[super
viewDidLoad];

isplay = NO;

//圆角

self.imgview.layer.cornerRadius =
150.0 / 2.0;

self.imgview.layer.masksToBounds =
YES;

//添加动画

CABasicAnimation *monkeyAnimation = [CABasicAnimation
animationWithKeyPath:@"transform.rotation.z"];

monkeyAnimation.toValue = [NSNumber
numberWithFloat:2.0 *M_PI];

monkeyAnimation.duration =
1.5f;

monkeyAnimation.timingFunction = [CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionLinear];

monkeyAnimation.cumulative =
NO;

monkeyAnimation.removedOnCompletion =
NO; //No Remove

monkeyAnimation.repeatCount =
FLT_MAX;

[self.imgview.layer
addAnimation:monkeyAnimation forKey:@"AnimatedKey"];

[self.imgview
stopAnimating];

// 加载动画
但不播放动画

self.imgview.layer.speed =
0.2;

}

- (void)didReceiveMemoryWarning

{

[super
didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

//开始动画

- (IBAction)startAnimate:(id)sender {

if (!isplay) {

isplay = YES;

self.imgview.layer.speed =
1.0;

self.imgview.layer.beginTime =
0.0;

CFTimeInterval pausedTime = [self.imgview.layer
timeOffset];

CFTimeInterval timeSincePause = [self.imgview.layer
convertTime:CACurrentMediaTime()
fromLayer:nil] - pausedTime;

self.imgview.layer.beginTime = timeSincePause;

}

}

//停止动画并保存当前的角度

- (IBAction)stioAnimate:(id)sender {

if (isplay) {

isplay = NO;

CFTimeInterval pausedTime = [self.imgview.layer
convertTime:CACurrentMediaTime()
fromLayer:nil];

self.imgview.layer.speed =
0.0;

self.imgview.layer.timeOffset = pausedTime;

}

}

@end

视图自定义旋转动画 类似百度音乐