Swift中多個單獨的Pickerviews

Question

我是編程新手，請原諒這個問題的基本性質。

我想把多個選擇器視圖放到同一個類中，但是他們不斷的用相同的選擇回來。

class ViewController: UIViewController, UIPickerViewDelegate{ 

@IBOutlet var outgoing: UIPickerView! 

var var1=["1","2"] 
var var2=["a","b"] 

override func viewDidLoad() { 
    super.viewDidLoad() 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
} 

func numberOfComponentsInPickerView(pickerView: UIPickerView!) ->Int{ 
    return 2 
} 


func pickerView(pickerView: UIPickerView!, numberOfRowsInComponent component: Int) ->Int { 

    return var1.count 


} 


func pickerView(pickerView: UIPickerView!, titleForRow row: Int, forComponent component: Int)->String!{ 
    return var2[row] 

} 

有什麼建議嗎？

Answer 1

爲了顯示你需要改變你的方法，如兩個部分組成：

func numberOfComponentsInPickerView(pickerView: UIPickerView!) ->Int 
{ 
     return 2 
} 


func pickerView(pickerView: UIPickerView!, numberOfRowsInComponent component: Int) ->Int 
{ 
    var rows = var2.count 
    if component == 0 
    { 
     rows = var1.count 
    } 
    return rows; 
} 


func pickerView(pickerView: UIPickerView!, titleForRow row: Int, forComponent component: Int)->String! 
{ 
    var componentStr = var2[row] 
    if component == 0 
    { 
     componentStr = var1[row] 
    } 
    return componentStr; 
}