Changing Background color of Picker View - ios

Question

How can i change the Color of my Picker view depending on the background color of the TextField? e.g i have 2 text fields, The one is red and the other one is blue, If i clicked the red one the picker background is red also, And if i click the blue one the picker background will be blue also? im using this code for the text field to show the picker view.
int tag = [(UITextField*)sender tag];
self.myPicker.hidden = NO;
selectedTable = tag;
[sender resignFirstResponder];
float yy = 10;
switch (tag) {
case 0: yy = self.txtTgfeet.frame.origin.y + self.myPicker.frame.size.height;
break;
case 1: yy = self.txtTginches.frame.origin.y + self.myPicker.frame.size.height;
break;
case 2: yy = self.txtTgfraction.frame.origin.y + self.myPicker.frame.size.height;
break;
case 3: yy = self.txtBgfeet.frame.origin.y - self.myPicker.frame.size.height;
break;
case 4: yy = self.txtBginches.frame.origin.y - self.myPicker.frame.size.height;
break;
case 5: yy = self.txtBgfraction.frame.origin.y - self.myPicker.frame.size.height;
break;
case 6: yy = self.txtGravity.frame.origin.y - self.myPicker.frame.size.height;
break;
case 7: yy = self.txtBsw.frame.origin.y - self.myPicker.frame.size.height;
break;
case 8: yy = self.txtTemp.frame.origin.y - self.myPicker.frame.size.height;
break;
default:
break;
}
thank you!

Answer 1

use self.picker.backgroundColor = [UIColor redColor]; in textFieldDidBeginEditing: UITextFieldDelegate method and change color using by using tag property.
if(textField.tag == 1){
self.picker.backgroundColor = [UIColor redColor];
}
else if(textField.tag == 2){
self.picker.backgroundColor = [UIColor redColor];
}
else{
//use default value
}
Edit:
switch (tag) {
case 0: yy = self.txtTgfeet.frame.origin.y + self.myPicker.frame.size.height;
self.picker.backgroundColor = [UIColor redColor];
break;
case 1: yy = self.txtTginches.frame.origin.y + self.myPicker.frame.size.height;
self.picker.backgroundColor = [UIColor bluecolor];
break;
case 2: yy = self.txtTgfraction.frame.origin.y + self.myPicker.frame.size.height;
self.picker.backgroundColor = [UIColor greenColor];
break;
case 3: yy = self.txtBgfeet.frame.origin.y - self.myPicker.frame.size.height;
break;
case 4: yy = self.txtBginches.frame.origin.y - self.myPicker.frame.size.height;
break;
case 5: yy = self.txtBgfraction.frame.origin.y - self.myPicker.frame.size.height;
break;
case 6: yy = self.txtGravity.frame.origin.y - self.myPicker.frame.size.height;
break;
case 7: yy = self.txtBsw.frame.origin.y - self.myPicker.frame.size.height;
break;
case 8: yy = self.txtTemp.frame.origin.y - self.myPicker.frame.size.height;
break;
default:
break;
}
add different background colour for each case