多个tableview 点击状态栏当前scrollView滚动到顶部

1、在 AppDelegate 判断是不是点击了状态栏

2、判断当前view是否在主窗口，并且是显示状态

//是否显示   #import "UIView+XMGExtension.h"

( BOOL )isShowingOnKeyWindow

{
    // 主窗口
    UIWindow *keyWindow = [ UIApplication sharedApplication ]. keyWindow ;
   
    // 以主窗口左上角为坐标原点 , 计算 self 的矩形框
    CGRect newFrame = [keyWindow convertRect : self . frame fromView : self . superview ];
    CGRect winBounds = keyWindow. bounds ;
   
    // 主窗口的 bounds 和 self 的矩形框 是否有重叠
    BOOL intersects = CGRectIntersectsRect (newFrame, winBounds);
   
    return ! self . isHidden && self . alpha > 0.01 && self . window == keyWindow && intersects;

}

//点击判断

- ( void ) touchesBegan:( NSSet *)touches withEvent:( UIEvent *)event {
    [ super touchesBegan :touches withEvent :event];
    CGPoint location = [[[event allTouches ] anyObject ] locationInView :[ self window ]];
    CGRect statusBarFrame = [ UIApplication sharedApplication ]. statusBarFrame ;
    statusBarFrame. origin . y += 0.5 ;
    if ( CGRectContainsPoint (statusBarFrame, location)) {
        [ self windowClick ];
    }
}

- ( void )windowClick
{
    UIWindow *window = [ UIApplication sharedApplication ]. keyWindow ;
    [ self searchScrollViewInView :window];
}

//判断是否为 UIScrollView

- ( void )searchScrollViewInView:( UIView *)superview
{
    for ( UIScrollView *subview in superview. subviews ) {
        // 如果是 scrollview, 滚动最顶部
        if ([subview isKindOfClass :[ UIScrollView class ]] && subview. isShowingOnKeyWindow ) {
            CGPoint offset = subview. contentOffset ;
            offset. y = - subview. contentInset . top ;
            [subview setContentOffset :offset animated : YES ];
        }

        // 继续查找子控件
        [ self searchScrollViewInView :subview];
    }

}