如何以编程方式添加安全区域

问题描述

打开视图时，它看起来像下面的图片，

When you open the view, it will look like the image below,

i手机x打开视图

i Phone 8打开视图

对于iPhone X，我想以编程方式在当前视图中添加一个安全区域.

For iphone x, I would like to add a safe area programmatically in the current view.

尝试的来源如下.

UIView *view = self.view;

if (@available(iOS 11.0, *)) {
    UILayoutGuide * guide = view.safeAreaLayoutGuide;
    [view.topAnchor constraintEqualToAnchor:guide.topAnchor].active = YES;
    [view.bottomAnchor constraintEqualToAnchor:guide.bottomAnchor].active = YES;
}

我想应用此资源，但我不知道该怎么办.

I suppose to apply this source, but I do not know what to do.

请回答我的问题！！

推荐答案

此处是安全区域布局"的示例代码.在Objective-C中尝试此操作，请参见:

Here is sample code for Safe Area Layout. Try this in Objective-C and see:

UIView * myView = // initialize view using IBOutlet or programtically

myView.backgroundColor = [UIColor red];
myView.translatesAutoresizingMaskIntoConstraints = NO;

UILayoutGuide * guide = self.view.safeAreaLayoutGuide;
[self.myView.leadingAnchor constraintEqualToAnchor:guide.leadingAnchor].active = YES;
[self.myView.trailingAnchor constraintEqualToAnchor:guide.trailingAnchor].active = YES;
[self.myView.topAnchor constraintEqualToAnchor:guide.topAnchor].active = YES;
[self.myView.bottomAnchor constraintEqualToAnchor:guide.bottomAnchor].active = YES;

// Refresh myView and/or main view
[self.view layoutIfNeeded];
//[self.myView layoutIfNeeded];

引用自:以编程方式使用安全区域布局

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