CODEWITHSUNDEEP
iosswiftuiviewuitextfield
Jerland2
Jerland2

Reputation: 1127

iOS Swift - Multiple UITextFields moving UIView

First I will describe the layout: I have a UIView with two UITextfields. When I select either of the textfields I want the UIView to move up such that the textfields are not covered by the keyboards. The normal solution is obvious and already implemented: keyboardWillHide and keyboardWillShow. When i select one textfield the UIView behaves as expect, HOWEVER when I have one textfield selected and then the next textfield is selected the UIVIEW snaps back to the original constraints, and will not readjust, even when keyboardWillShow is called again.

How can i achieve the desired effect: When a textfield is selected the UIView moves up, then when the next textfield is selected the UIView remains in the exact same raised position.

Why does the UIView reset on the second textfield being selected currently?

Below is the relevant code, these functions are setup in the VDL. No other code touches the textfields. It is worth mentioning these textfields occur in a modal view over current context. Also worth mentioning the keyboards are of type decimalPad

// MARK: - keyboard Controls

func keyboardWillShow(notification:NSNotification) {
    print("Keyboard show")
    if isKeyboardOffset == false {
        if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
            print("Keyboard show... \(keyboardSize)")

            self.viewToMove.frame.origin.y -= keyboardSize.height / 2

        }
        isKeyboardOffset = true
    }
}



func keyboardWillHide(notification:NSNotification) {
    print("Keyboard hide")
    if isKeyboardOffset == true {
        if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
            print("keyboard hide...")

            self.viewToMove.frame.origin.y += keyboardSize.height / 2

        }
        isKeyboardOffset = false
    }
}

EDIT ANSWER: As stated in accepted answer Instead of adjusting the location of the UIView we choose to update the layout constraint dictating the UIViews location. The following implementation of keyboardWillShow

func keyboardWillShow(notification:NSNotification) {
    if isKeyboardOffset == false {
        if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
            print("Keyboard show... \(keyboardSize)")
            self.topConstraint.constant -= 100

        }
        isKeyboardOffset = true
    }
}

Upvotes: 2

Views: 313

Answers (1)

Charlie Fish
Charlie Fish

Reputation: 20496

Since you are using Auto Layout with constraints on your view it automatically gets reset back to the original position. So instead of changing the view position if you change the value of the constraint this should work.

Upvotes: 2

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