我正在使用swift构建iOS应用程序 .
在我的viewcontroller中,我需要6个选择器视图 .
以前我用IB创建了PickerViews .
现在我想以编程方式进行,因为我想实现完成和取消按钮 .
我创建了一个示例项目并进行了检查 . 我正在显示选择器视图 .
但在我原来的应用程序中,它不起作用 .
可能是拣货员数量很大 .
并且每次选择器的标签值显示为零 .
我试着像这样设置标签值,
pickerView.tag == 2
这是用于创建Picker的代码
func createPicker1(){
var pickerView = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 300))
pickerView.tag == 2
pickerView.backgroundColor = .greenColor()
pickerView.delegate = self
pickerView.dataSource = self
pickerView.showsSelectionIndicator = true
var toolBar = UIToolbar()
toolBar.barStyle = UIBarStyle.Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)
toolBar.sizeToFit()
println(pickerView.tag)
var doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Plain, target: self, action: "donePicker1")
var spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
var cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Plain, target: self, action: "canclePicker1")
toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
toolBar.userInteractionEnabled = true
pwrd.inputView = pickerView
pwrd.inputAccessoryView = toolBar
}
这些是我的Picker方法 .
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if (pickerView.tag == 0){
return categories.count
}
else
{
return skillNeeded.count
}
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
if (pickerView.tag == 0) {
return categories[row]
}
else{
return skillNeeded[row]
}
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{
if (pickerView.tag == 0) {
user.text = categories[row]
}
else {
pwrd.text = skillNeeded[row]
}
}
谢谢 . 您的帮助将不胜感激 .
1 回答
您没有使用==设置值
试试
pickerView.tag = 2