0125——动画2

　  //显隐
    CABasicAnimation *capacityAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
    capacityAnimation.fromValue = @1;
    capacityAnimation.toValue = @0;
    
    //放大缩小
    CABasicAnimation   *scaleAniamation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
    scaleAniamation.fromValue = @0.5;
    scaleAniamation.toValue = @1.5;
       
    //移动
    CABasicAnimation *moveAnimation = [CABasicAnimation animationWithKeyPath:@"position"];
    moveAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(200, 200)];
    
    //旋转
    CABasicAnimation *rotateAniamation = [CABasicAnimation animationWithKeyPath:@"transform"];
    rotateAniamation.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];
    rotateAniamation.toValue = [NSValue valueWithCATransform3D:CATransform3DRotate(_layer.transform, M_PI, 0.3, 0.5, 1)];
    

//添加动画
    [CATransaction setAnimationDuration:1.0];//动画速度
    [_layer addAnimation:capacityAnimation forKey:nil];
    [_layer addAnimation:scaleAniamation forKey:nil];
    [_layer addAnimation:moveAnimation forKey:nil];
    [_layer addAnimation:rotateAniamation forKey:nil];

//组动画  
    CAAnimationGroup *group = [CAAnimationGroup animation];
    group.duration = 1;
    group.removedOnCompletion   = NO;
    group.fillMode = kCAFillModeForwards;
    group.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
    
    group.animations = @[capacityAnimation,scaleAniamation,moveAnimation,rotateAniamation];
    
    [_layer addAnimation:group forKey:nil];

还有更多细节和Core Animation的高级应用：https://zsisme.gitbooks.io/ios-/content/chapter1/the-layer-tree.html