更改选择器视图的背景颜色

Question

How can i change the Color of my Picker view depending on the background color of the TextField? eg 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