iOS版：自动布局VS autoresizingMask - 调整整个视图来填补？ [英] iOS: Auto Layout vs autoresizingMask - resizing whole view to fill?

问题描述

我有这是使用自动布局建立了一个故事板。在这一故事板，我在几个地点嵌入UIViewController子类（ButtonGridViewController），其中每一个的大小不同。 ButtonGridViewController的观点是在厦门国际银行定义的。

I've got a storyboard which is built using Auto Layout. Within that storyboard, I'm embedding a UIViewController subclass ("ButtonGridViewController") in several locations, each of which is a different size. ButtonGridViewController's view is defined in a xib.

我需要的是对ButtonGridViewController的看法的全部简单地扩展到填补我将它嵌入在观与旧的支柱 - 和弹簧的方法，这是微不足道的 - 只设置了所有子视图在两个方向来调整，瞧，这块蛋糕。

What I need is for the entirety of the ButtonGridViewController's view to simply scale-to-fill the view I'm embedding it in. With the old struts-and-springs method, this was trivial -- just set all the subviews to resize in both directions, and voila, piece of cake.

我如何做到使用约束是一回事吗？对于它的价值，在厦门国际银行只包含一个主视图，这是长方形的，并且有4子视图 - 每一个按钮 - 排列在一个2x2格。我想要的一切，包括按键和间距，缩放和/或拉伸，以填补它会到视图。

How do I accomplish the same thing using constraints? For what it's worth, the xib just contains a main view, which is rectangular, and has 4 subviews - each a button - arranged in a 2x2 grid. I want everything, including the buttons AND spacing, to scale and/or stretch to fill the view it's going into.

谢谢！

推荐答案

要使用约束完成同样的事情，你需要设置前置，顶部和底部的空间给上海华0见下图：

To accomplish the same thing using constraints you need to set the leading, trailing, top and bottom space to the superview to 0. See below:

//load the ButtonGridViewController from a xib
[[NSBundle mainBundle] loadNibNamed:@"..." owner:self options:nil];

//get the view add it
[self.view addSubView:self.myGridView];

//turn off springs and struts
[self.view setTranslatesAutoresizingMaskIntoConstraints:NO];

//add constraints to fill parent view
NSArray *arr;

//horizontal constraints
arr = [NSLayoutConstraint constraintsWithVisualFormat:@"|[vw]|"
                                                options:0
                                                metrics:nil
                                              views:@{@"vw":self.myGridView}];
[self.view addConstraints:arr];

//vertical constraints
arr = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[vw]|"
                                                options:0
                                                metrics:nil
                                                  views:@{@"vw":self.myGridView}];
[self.view addConstraints:arr];

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