期望可以支持帧动画，建议将[alert]或[sheet]布局的容器视图[containerView]返回给外界

[szmichaelyb]

为便于支持帧动画，建议将布局弹窗或者sheet的容器视图[containerView]返回给外界

再做具体业务的时候，发现使用[LeeOpenAnimationConfig]配置自定义动画的时候，除了默认动画之外，还可以使用block动画，但还是略显样式单一，不能实现实际业务期望的动画，希望能支持帧动画。

1. 通过验证发现，只要将[containerView]返回给外界是可以实现帧动画的。

下面我描述一下帧动画的实现办法，仅为简单实现方式，希望作者能支持，采纳方案，或者实现更完善的解决方案，谢谢~

• LEEAlertHelper.h文件

  typedef LEEBaseConfigModel * _Nonnull (^LEEConfigToBlockAndBlock)(void(^)(UIView *containerView,void(^animatingBlock)(void),void(^animatedBlock)(void)));

• LEEAlert.h文件

  @property (nonatomic, copy, readonly) LEEConfigToBlockAndBlock LeeOpenAnimationConfig;

• LEEAlert.m文件

  @property (nonatomic, copy) void(^modelOpenAnimationConfigBlock)(UIView *containerView, void(^animatingBlock)(void), void(^animatedBlock)(void));
  
  - (LEEConfigToBlockAndBlock)LeeOpenKeyAnimationConfig
  {
       return ^(void(^block)(UIView *containerView,void(^animatingBlock)(void),void(^animatedBlock)(void))){
  
             self.modelOpenAnimationConfigBlock = block;
  
             return self;
       };
  }
  
  /// 在 showAnimationsWithCompletionBlock 方法中
  - (void)showAnimationsWithCompletionBlock:(void (^)(void))completionBlock
  {
      /// 前面代码省略
      /// 帧动画相关
      if (self.config.modelOpenAnimationConfigBlock) self.config.modelOpenAnimationConfigBlock(self.containerView,^{
  
        if (!weakSelf) return ;
  
        if (weakSelf.config.modelBackgroundStyle == LEEBackgroundStyleTranslucent) {
  
            weakSelf.view.backgroundColor = [weakSelf.view.backgroundColor colorWithAlphaComponent:weakSelf.config.modelBackgroundStyleColorAlpha];
  
        } else if (weakSelf.config.modelBackgroundStyle == LEEBackgroundStyleBlur) {
  
            weakSelf.backgroundVisualEffectView.effect = [UIBlurEffect effectWithStyle:weakSelf.config.modelBackgroundBlurEffectStyle];
        }
  
        CGRect containerFrame = weakSelf.containerView.frame;
  
        containerFrame.origin.x = (viewWidth - containerFrame.size.width) * 0.5f;
  
        containerFrame.origin.y = (viewHeight - containerFrame.size.height) * 0.5f;
  
        weakSelf.containerView.frame = containerFrame;
  
        weakSelf.containerView.alpha = 1.0f;
  
        weakSelf.containerView.transform = CGAffineTransformIdentity;
  
    }, ^{
  
        if (!weakSelf) return ;
  
        weakSelf.isShowing = NO;
  
        [weakSelf.view setUserInteractionEnabled:YES];
  
        if (weakSelf.openFinishBlock) weakSelf.openFinishBlock();
  
        if (completionBlock) completionBlock();
    });
  }
  

2. 外界帧动画代码实现（举例）

• 以前只能使用Block动画

  .LeeOpenAnimationConfig(^(void (^animatingBlock)(void), void (^animatedBlock)(void)) {
    [UIView animateWithDuration:1.0f delay:0 usingSpringWithDamping:0.4 initialSpringVelocity:1.0f options:UIViewAnimationOptionAllowUserInteraction animations:^{
          animatingBlock(); // 调用动画中Block
    } completion:^(BOOL finished) {
          animatedBlock();  // 调用动画结束Block
    }];
  })

• 现在可以使用帧动画

  /// 帧动画代码
  - (void)animationForView:(UIView*)view
  {
    NSMutableArray * values = [NSMutableArray array];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.7, 0.7, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.2, 1.2, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.9, 0.9, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.1, 1.1, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.95, 0.95, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.02, 1.02, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 1.0)]];
    CAKeyframeAnimation * animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
    animation.duration = 0.5f;
    animation.removedOnCompletion = YES;
    animation.fillMode = kCAFillModeForwards;
    animation.values = values;
    [view.layer addAnimation:animation forKey:nil];
  }
  
  /// 弹窗帧动画代码实现（改造后）
  @weakify(self)
  .LeeOpenAnimationConfig(^(UIView *containerView, void(^animatingBlock)(void), void(^animatedBlock)(void)) {
      @strongify(self)
      if(animatingBlock) animatingBlock(); // 调用动画中Block
      [self animationForView:containerView];
      if(animatedBlock) animatedBlock();   // 调用动画结束Block
  })