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
  })