Change pickerView component position - objective-c

Question

I have a pickerView with two components . Based on my language ,I need to change the components position so my first component to be at the right and my second component to be at the left .
this is what I wan to do :
Note: The components are connected I mean by selecting a row from first component , the second component would be reloaded with a new content.
How should I do that?
Update
This is the code:
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if IS_Mahalat {
return 1
}else{ // just ostan - shahrestan
if component == 0 { //osatn
return self.ostans.count
}else{//shahrestan
return self.ostans[pickerView.selectedRowInComponent(0)]._city.count
}
}
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if IS_Mahalat {
//return self.mahalat[row].name
return "sdf"
}else{//ostan shahrestan
if component == 0 { //osatn
return self.ostans[row].name
}else{//shahrestan
print(pickerView.selectedRowInComponent(0))
return self.ostans[pickerView.selectedRowInComponent(0)]._city[row]._name
}
}
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if !IS_Mahalat {//ostan shahrestan
if component == 0 {
self.picker_ostan.reloadComponent(1)
}
}
}
func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView?) -> UIView {
var myString = view as! UILabel!
let rowText:String!
if( view == nil) {
myString = UILabel()
}
if IS_Mahalat {
rowText = ""
}else{ //ostan shahrestan
if component == 0 { //osatn
rowText = self.ostans[row].name
}else{//shahrestan
rowText = self.ostans[pickerView.selectedRowInComponent(0)]._city[row]._name
}
}
myString.textAlignment = .Center
let attributedRowText = NSMutableAttributedString(string: rowText)
let attributedRowTextLength = attributedRowText.length
attributedRowText.addAttribute(NSForegroundColorAttributeName, value: UIColor.blueColor(), range: NSRange(location: 0, length: attributedRowTextLength))
attributedRowText.addAttribute(NSFontAttributeName, value: UIFont(name: FONT_NAME, size: 16.0)!, range: NSRange(location: 0 ,length:attributedRowTextLength))
myString!.attributedText = attributedRowText
return myString
}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
if IS_Mahalat {
return 1
}else{ // just ostan - shahrestan
return 2
}
}