如何将对象限制为全屏

Question

我想知道如何以编程方式将imageview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的大小和位置，但是无论如何使用哪种设备，我都想知道如何以全屏方式显示该对象。

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

我假设您的对象是FIRE ，父视图是view 。 您可以按以下约束进行操作。

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的蒙版

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

Answer 2

目标是将UIView前导，尾随，顶部和底部约束设置为superview前导，尾随，顶部和底部约束

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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