对齐 UISwitch 以居中对齐

Question

我下面的 swift 代码试图让 uisiwtch 出现在屏幕中央。正如你在我下面的照片中看到的那样。如下图所示。开关只占据了屏幕左上角的一小部分。它看起来不太好。

pic

var soundSwitch = UISwitch()

NSLayoutConstraint.Activate[(
   soundSwitch.leadingAnchor.constraint(equalTo: map.trailingAnchor, constant: 0),
   soundSwitch.topAnchor.constraint(equalTo: text.bottomAnchor, constant : 0),
   soundSwitch.widthAnchor.constraint(equalTo: view.widthAnchor, multiplier: 1/3, constant: 0),
   soundSwitch.heightAnchor.constraint(equalTo: view.heightAnchor, multiplier: 0.07, constant: 0),
 )]

Answer 1

替换

soundSwitch.leadingAnchor.constraint(equalTo: map.trailingAnchor, constant: 0),

与

soundSwitch.centerXAnchor.constraint(equalTo: map.centerXAnchor, constant: 0),

顺便说一句，别忘了

soundSwitch.translatesAutoresizingMaskIntoConstraints = false

此外，最好同时删除两者

soundSwitch.widthAnchor.constraint(equalTo: view.widthAnchor, multiplier: 1/3, constant: 0),
soundSwitch.heightAnchor.constraint(equalTo: view.heightAnchor, multiplier: 0.07, constant: 0),

因为开关不会缩放

对齐 UISwitch 以居中对齐

Align UISwitch to align to center

uiswitch

nslayoutconstraint

swift