ios 动画总结(未完)

针对iOS 动画做一下总结

  • 基本动画
  • 帧动画
  • 组动画
  • 转场动画

!- - !插一句UIview代码块(能实现最简单的动画)

_demoView.frame = CGRectMake(0, SCREEN_HEIGHT/2-50, 50, 50);
[UIView animateWithDuration:1.0f animations:^{
_demoView.frame = CGRectMake(SCREEN_WIDTH, SCREEN_HEIGHT/2-50, 50, 50);
} completion:^(BOOL finished) {
_demoView.frame = CGRectMake(SCREEN_WIDTH/2-25, SCREEN_HEIGHT/2-50, 50, 50);
}];

1.基本动画

  • 第一
CABasicAnimation *anima = [CABasicAnimation animationWithKeyPath:@"position"];
anima.fromValue = [NSValue valueWithCGPoint:CGPointMake(0, SCREEN_HEIGHT/2-75)];
anima.toValue = [NSValue valueWithCGPoint:CGPointMake(SCREEN_WIDTH, SCREEN_HEIGHT/2-75)];
anima.duration = 1.0f;
[_demoView.layer addAnimation:anima forKey:@"positionAnimation"];
  • 第二
var loginButton:UIButton?
    var index:Int = 1;
    
  override func viewDidLoad() {
   super.viewDidLoad()
   loginButton = UIButton(frame: CGRect(x: 20, y: 230, width: self.view.frame.width-20*2,height: 50))
    loginButton!.backgroundColor = UIColor(red: 50/255.0, green: 185/255.0, blue: 170/255.0, alpha: 1.0)
     loginButton!.setTitle("登陆", for: UIControlState())
     self.view.addSubview(loginButton!)
    }
override func viewWillAppear(_ animated: Bool) {
      //      几何形状:拉伸 压缩效果
        UIView.beginAnimations(nil, context: nil)//动画开始
        UIView.setAnimationDuration(1)//动画周期设置
        loginButton!.bounds = CGRect(x:0, y:0, width:loginButton!.frame.size.width*0.7, height:loginButton!.frame.size.height*1.2)//动画形状
        UIView.commitAnimations()//动画提交
    }

2.帧动画

// 1.做什么动画
    CAKeyframeAnimation* anim = [[CAKeyframeAnimation alloc] init];

    // 2.怎么做动画
    anim.keyPath = @"position";

    // -----------
    //    NSValue* v1 = [NSValue valueWithCGPoint:CGPointMake(100, 100)];
    //    NSValue* v2 = [NSValue valueWithCGPoint:CGPointMake(150, 100)];
    //    NSValue* v3 = [NSValue valueWithCGPoint:CGPointMake(100, 150)];
    //    NSValue* v4 = [NSValue valueWithCGPoint:CGPointMake(150, 150)];
    //
    //    anim.values = @[ v1, v2, v3, v4 ]; // 关键的数据
    // -----------

    // 创建路径
    UIBezierPath* path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:0 endAngle:2 * M_PI clockwise:1];

    anim.path = path.CGPath; // 路径

    anim.duration = 2; // 时间
    anim.repeatCount = INT_MAX; // 重复次数

    // 3.对谁做动画
    [self.layer addAnimation:anim forKey:nil];

3.组动画

// 1.创建动画
    CAAnimationGroup* group = [[CAAnimationGroup alloc] init];

    // ------ 基本动画(自旋转) ------
    // 1.创建动画对象(做什么动画)
    CABasicAnimation* anim = [[CABasicAnimation alloc] init];

    // 2.怎么做动画
    anim.keyPath = @"transform.rotation";

    anim.byValue = @(2 * M_PI * 5); // 在自身的基础上增加
    // ------ 基本动画(自旋转) ------
    // ------ 关键帧动画(绕着圆转) ------
    // 1.做什么动画
    CAKeyframeAnimation* anim1 = [[CAKeyframeAnimation alloc] init];

    // 2.怎么做动画
    anim1.keyPath = @"position";

    // 创建路径
    UIBezierPath* path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(150, 150) radius:100 startAngle:0 endAngle:2 * M_PI clockwise:1];

    anim1.path = path.CGPath; // 路径
    // ------ 关键帧动画(绕着圆转) ------

    // 2.操作
    group.animations = @[ anim, anim1 ];

    // 时间
    group.duration = 3;
    // 重复次数
    group.repeatCount = INT_MAX;

    // 3.添加动画
    [self.layer addAnimation:group forKey:nil];

4.转场动画

 // 1.创建动画
    CATransition* anim = [[CATransition alloc] init];

    // 2.操作
    anim.type = @"moveIn";

    if (sender.direction == UISwipeGestureRecognizerDirectionLeft) {
        // 从右往左
        // 方向
        anim.subtype = kCATransitionFromRight;
    }
    else if (sender.direction == UISwipeGestureRecognizerDirectionRight) {
        // 从左往右
        // 方向
        anim.subtype = kCATransitionFromLeft;
    }

    // 3.添加动画
    [self.imageView.layer addAnimation:anim forKey:nil];

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