如何将对象限制为全屏

Question

我想知道如何以编程方式将图像视图编码为全屏。现在我知道如何以编程方式将对象编码为特定大小和位置，但我想知道如何在全屏中获取该对象，无论使用什么设备。

FIRE.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
FIRE.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true

FIRE.widthAnchor.constraint(equalToConstant: 400).isActive = true
FIRE.heightAnchor.constraint(equalToConstant: 700).isActive = true
FIRE.translatesAutoresizingMaskIntoConstraints = false

Answer 1

目标是将 UIView 的前导、尾随、顶部和底部约束设置为等于其 superview

的前导、尾随、顶部和底部约束

FIRE.translatesAutoresizingMaskIntoConstraints = false

FIRE.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
FIRE.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true
FIRE.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
FIRE.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true

Answer 2

我假设您的对象是 FIRE 并且父视图是 view。您可以按如下方式使用约束来完成。

FIRE.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
FIRE.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
FIRE.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
FIRE.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true
FIRE.translatesAutoresizingMaskIntoConstraints = false

或者您可以使用自动调整大小蒙版

FIRE.frame = view.bounds
FIRE.autoresizingMask = [.flexibleWidth, .flexibleHeight]

如何将对象限制为全屏

How to constrain an object to full screen

constraints

view

nslayoutconstraint

swift