我目前正在从事#hackingwithswift的Project 4。我的问题是无法从表单视图中更改选择器的样式。
这是我正在处理的代码的一小段。请假定其余代码正确。无论我在.pickerStyle()
中加上什么修饰符,我总是会得到错误:
类型'WheelPickerStyle.Type'不符合'PickerStyle';只要 struct / enum / class类型可以符合协议
NavigationView{
Form{
Section(header: Text("When do you want to wake up?") .font(.headline)) {
DatePicker("Please enter a time", selection: $wakeUp, displayedComponents: .hourAndMinute)
.datePickerStyle(WheelDatePickerStyle())
.labelsHidden()
}
Section(header: Text("Desired amount of sleep")
.font(.headline)) {
Stepper(value: $sleepAmount, in: 4...12, step: 0.25) {
Text("\(sleepAmount, specifier: "%g") hours")
}
}
Section(header: Text("Daily coffee intake")
.font(.headline)) {
Picker("Number of coffees had in a day", selection: $coffeeAmount) {
Text("1")
Text("2")
Text("3")
}
.pickerStyle(WheelPickerStyle)
}
有人可以帮我吗?请说明我在做什么错,我是初学者!
谢谢!
答案 0 :(得分:1)
在您的代码中
Picker("Number of coffees had in a day", selection: $coffeeAmount) {
Text("1")
Text("2")
Text("3")
}
.pickerStyle(WheelPickerStyle)
}
您应该使用WheelPickerStyle()
而不是WheelPickerStyle