我正在编写一个应用程序,我正在使用Xcode 11.3.1 / Swift 5(尽管这个问题在Xcode 10/Swift 4中是相同的)。最初,当我开始编写我的应用程序时,我用故事板将两个UISwitches放在场景中,这个想法是,如果UISwit-1是打开的,那么UISwit-2就是关闭的,反之亦然。这个功能很好地发挥了作用(我的方法/代码/IBActions和IBOutlets) --所有这些都是有效的。
但是,我希望通过编程方式编写UISwitches代码,而不是使用情节提要,因为我希望能够根据iPhone设备类型,将开关放在y轴的不同位置。因为iPhone 11 the比iPhone 6长,所以我想把UISwitches向下移动。我不相信我能在故事板上做到这一点,因此我想以编程的方式对它们进行编码。
问题不在于交换机的编码,我已经对它们进行了编码,它们可以工作。然而,问题是,如果我打开UISwite-1,那么我似乎无法弄清楚关闭UISwitch 2的代码(反之亦然)。我认为我失败的地方是我不知道如何在方法中调用IBOutlet来调整“其他”开关(即。用户没有切换的那个)。
下面的代码块是与使用IBActions和IBOutlets的故事板技术/方法相关联的代码:
“”“
// MARK: My UISwitches - toggle between the two UISwitches
@IBAction func singleUserModeSwitch(_ sender: UISwitch) {
if dontAllowEditing == false {
if (sender.isOn) == true {
setFamilyMode.setOn(false, animated: true)
} else {
setFamilyMode.setOn(true, animated: false)
}
} else {
myAlertNoDriverProfile()
}
}
@IBOutlet weak var setFamilyMode: UISwitch!
@IBAction func familyUserModeSwitch(_ sender: UISwitch) {
if dontAllowEditing == false {
if (sender.isOn) == true {
setSingleMode.setOn(false, animated: true)
} else {
setSingleMode.setOn(true, animated: false)
}
} else {
myAlertNoDriverProfile()
}
}
@IBOutlet weak var setSingleMode: UISwitch!
'''然而,当我试图以编程方式对UISwitches进行编程时,下一个代码块是我的代码,正如我说的那样,代码的工作原理是我可以显示UISwitches,但是当我单击我以编程方式编码的任何一个UISwitches时,我就无法让它们更新我以编程方式创建的另一个UISwitch .
“”“
// MARK: Display Switch Buttons
func displaySwitches() {
// Determine device type
if DeviceType.isiPhone6 || DeviceType.isiPhoneX {
singleUserModeSwitchPositionY = 484
familyUserModeSwitchPositionY = 525
}
if DeviceType.isiPhone6Plus || DeviceType.isiPhoneXs {
singleUserModeSwitchPositionY = 504
familyUserModeSwitchPositionY = 545
}
// Display UISwitch-1
let singleUserModeSwitch = UISwitch(frame:CGRect(x: 220, y:singleUserModeSwitchPositionY, width: 0, height:0))
singleUserModeSwitch.isOn = true
singleUserModeSwitch.thumbTintColor = UIColor.white
singleUserModeSwitch.tintColor = Colors.jamesBlue
singleUserModeSwitch.onTintColor = Colors.jamesBlue
singleUserModeSwitch.setOn(false, animated: true)
singleUserModeSwitch.addTarget(self, action: #selector(valueChange1), for:UIControl.Event.valueChanged)
view.addSubview(singleUserModeSwitch)
// Display UISwitch-2
let familyUserModeSwitch = UISwitch(frame:CGRect(x: 220, y:familyUserModeSwitchPositionY, width: 0, height:0))
familyUserModeSwitch.isOn = false
familyUserModeSwitch.thumbTintColor = UIColor.white
familyUserModeSwitch.tintColor = Colors.jamesBlue
familyUserModeSwitch.onTintColor = Colors.jamesBlue
familyUserModeSwitch.setOn(true, animated: true)
familyUserModeSwitch.addTarget(self, action: #selector(valueChange2), for:UIControl.Event.valueChanged)
self.view.addSubview(familyUserModeSwitch)
}
@objc func valueChange1(mySwitch1: UISwitch) {
if mySwitch1.isOn{
print("Switch1 (singleUserModeSwitch) is ON")
// I think the lines below (where I try an call the .setOn function is where the problem is
// as I somehow need to call an IBOULET however I don't have one defined because I am
// programmatically creating the UISwitches
setFamilyMode.setOn(false, animated: true)
} else {
print("Switch1 (singleUserMoeSwitch) is OFF")
setFamilyMode.setOn(true, animated: true)
}
}
@objc func valueChange2(mySwitch2: UISwitch) {
if mySwitch2.isOn{
print("Switch2 (familyUserModeSwitch) is ON")
setSingleMode.setOn(false, animated: true)
} else {
print("Switch1 (singleUserMoeSwitch) is OFF")
setSingleMode.setOn(true, animated: true)
}
}
'''发布于 2020-02-26 10:45:41
1.创建setSingleMode和setFamilyMode作为ViewController的instance properties。
2. In displaySwitches()将它们的值设置为singleUserModeSwitch和familyUserModeSwitch。
3.相应地修改valueChange1(_:)和valueChange2(_:)定义。
以下是总结上述要点的代码。
class ViewController: UIViewController {
var setSingleMode: UISwitch?
var setFamilyMode: UISwitch?
func displaySwitches() {
//rest of the code...
let singleUserModeSwitch = UISwitch(frame:CGRect(x: 220, y:singleUserModeSwitchPositionY, width: 0, height:0))
//rest of the code...
singleUserModeSwitch.addTarget(self, action: #selector(valueChange1(_:)), for:UIControl.Event.valueChanged)
self.setSingleMode = singleUserModeSwitch
let familyUserModeSwitch = UISwitch(frame:CGRect(x: 220, y:familyUserModeSwitchPositionY, width: 0, height:0))
//rest of the code...
familyUserModeSwitch.addTarget(self, action: #selector(valueChange2(_:)), for:UIControl.Event.valueChanged)
self.setFamilyMode = familyUserModeSwitch
}
@objc func valueChange1(_ mySwitch1: UISwitch) {
print("Switch1 (singleUserModeSwitch) is \(mySwitch1.isOn ? "ON" : "OFF")")
setFamilyMode?.setOn(!mySwitch1.isOn, animated: true)
}
@objc func valueChange2(_ mySwitch2: UISwitch) {
print("Switch2 (familyUserModeSwitch) is \(mySwitch2.isOn ? "ON" : "OFF")")
setSingleMode?.setOn(!mySwitch2.isOn, animated: true)
}
}发布于 2020-02-26 10:50:13
按以下方式切换代码:
lazy var setFamilyMode: UISwitch = {
let familySwitch = UISwitch()
familySwitch.translatesAutoresizingMaskIntoConstraints = false
// switch property settings
return familySwitch
}()
lazy var setSingleMode: UISwitch = {
let singleSwitch = UISwitch()
singleSwitch.translatesAutoresizingMaskIntoConstraints = false
// switch property settings
return singleSwitch
}()然后将开关添加到视图中:
view.addSubView(setFamilyMode)
view.addSubView(setSingleMode)根据需要为开关添加约束或设置框架。如果正在设置框架,请将开关的translatesAutoresizingMaskIntoConstraints属性设置为true。根据您的需求保存yAxis,并根据代码进行更改。
别忘了为你的开关添加目标
setFamilyMode.addTarget(self, action: #selector(valueChange1(_:)), for: .valueChanged)
setSingleMode.addTarget(self, action: #selector(valueChange2(_:)), for: .valueChanged)https://stackoverflow.com/questions/60411744
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