Add image to UITextField in Xcode?

I need to implement the concept of dropdown in Xcode.

For that purpose, I'm using a UIPickerview.

This pickerView loads when a textfield is tapped (on textFieldDidBeginEditing:)event.

Question:

Is there a way, that I can add a image to TextField?

The image is like an arrow mark by which user can understand that a dropdown appears when textfield is tapped .How can I make it?

UITextField has a rightView property, if you have image like this- then You can easly set ImageView object to rightView:

UITextField *myTextField = [[UITextField alloc] init];

myTextField.rightViewMode = UITextFieldViewModeAlways;
myTextField.rightView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"downArrow.png"]];

In Swift:

textField.leftViewMode = UITextFieldViewMode.Always
textField.leftView = UIImageView(image: UIImage(named: "imageName"))