UIScrollView自动ContentSize

Question

我正在尝试自动设置我的ContentSize的UIScrollView，但是当我这样做时，uiscrollview的帧高度并不是我想要的screenHeight。

这是我的密码：

-(void) viewWillAppear:(BOOL)animated {
        [self.scrollGeral setTranslatesAutoresizingMaskIntoConstraints:YES]; 

        [self.scrollGeral setContentSize:(CGSizeMake(screenSize.size.width, [self calcularAlturaScrollView]))];
}



-(CGFloat) calcularAlturaScrollView {
    CGFloat scrollViewHeight = 0.0f;
    for (UIView* view in self.scrollGeral.subviews)
    {
        scrollViewHeight += view.frame.size.height;
    }
    return scrollViewHeight;
}

因此，我试图包括以下几行：

 [self.scrollGeral setFrame:CGRectMake(0, 0, screenSize.size.width, screenSize.size.height)];

但是如果我这么做，UIScrollView就会“禁用”卷轴

Answer 1

我用以下代码解决了我的问题：

-(void) viewDidLayoutSubviews {
    [self.scrollGeral setContentSize:(CGSizeMake(screenSize.size.width, [self calcularAlturaScrollView]))];
}