How to setup the keyboard if l'am using two text fields - ios

Question

I've been trying to set up my keyboard since a few days ago, but I can't manage to do it. I just want the imageView to move up when I am writing in the bottom text field. In fact, it's working, but it also moves up when I try to write at the topTextField. I don't want that, because when that happens, I can't see the textField at the top, and I can't see what I'm writing.
I'll include my screenshots and my code.
In this image, I pressed the topTextField to write something, but as you can see, the topTextField is lost. I mean the view moves up when I press the topTextField and I don't want that. What I want is so that when I press the topTextField the keyboard should appear but the view should be at the same place.
And in the last one I pressed the textFieldBottom, and as you can see, it works. The view moves up so I can see what I'm writing inside the textFieldBottom.
Here is my code:
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
self.subscribeToKeyboardNotifications()
self.subscribeToKeyboardNotificationsDown()
}
override func viewWillDisappear(animated: Bool) {
super.viewWillDisappear(animated)
self.unsubscribeToKeyBoardNotifications()
self.unsubscribeToKeyBoardNotificationsDown()
}
func subscribeToKeyboardNotifications() {
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.keyboardWillShow(_:)) , name: UIKeyboardWillShowNotification, object: nil)
}
func unsubscribeToKeyBoardNotifications() {
NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillShowNotification, object: nil)
}
func keyboardWillShow(notification: NSNotification) {
view.frame.origin.y -= getKeyboardHeight(notification)
}
func subscribeToKeyboardNotificationsDown() {
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.keyboardWillHide(_:)), name: UIKeyboardWillHideNotification, object: nil)
}
func unsubscribeToKeyBoardNotificationsDown() {
NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillHideNotification, object: nil)
}
func keyboardWillHide(notification: NSNotification) {
view.frame.origin.y += getKeyboardHeight(notification)
}
func getKeyboardHeight(notification:NSNotification) -> CGFloat {
let userInfo = notification.userInfo
let keyboardSize = userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue
return keyboardSize.CGRectValue().height
}

Answer 1

// do one thing maintain one globle varible to save current textfield which is on editing mode based on that varible u put condition to move imageview
following example code will help you.
var currentTextField: UITextField
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
currentTextField = textField
return true
}
func keyboardWillShow(notification: NSNotification) {
if currentTextField == textFieldBottom {
view.frame.origin.y -= getKeyboardHeight(notification)
}
}

Answer 2

When topTextField becomes first responder, you're changing view.frame.origin, this is moving your topTextField up. Instead of changing view frame, you can set constraints for bottomTextField and you can change constraints for bottomTextField programmatically in keyboardWillShow method. This way your view frame will not change and topTextField will not move up.