Ever wanted to use an UITextView that looks like a rounded UITextFiled? Also, wished it will grow it’s height as you type your text? Well, you are in luck! Here is the swift file you will need.
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| /* | |
| TextViewWithPlaceholderAndExpandingHeight.swift | |
| TextViewWithPlaceholderAndExpandingHeight | |
| Created by Shabib Hossain on 1/24/17. | |
| Copyright (c) 2017 shabib87 <[email protected]> | |
| Permission is hereby granted, free of charge, to any person obtaining a copy | |
| of this software and associated documentation files (the "Software"), to deal | |
| in the Software without restriction, including without limitation the rights | |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| copies of the Software, and to permit persons to whom the Software is | |
| furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in | |
| all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
| THE SOFTWARE. | |
| */ | |
| import Foundation | |
| import UIKit | |
| class TextViewWithPlaceholderAndExpandingHeight: UITextView { | |
| @IBInspectable var placeHolderText: String! | |
| @IBInspectable var placeHolderColor: UIColor! | |
| private var placeHolderLabel: UILabel! | |
| private let defaultColor = UIColor(red:199.0/255.0, green:199.0/255.0, blue:205.0/255.0, alpha:1.0) | |
| private let UIPlaceholderTextChangeAnimationDuraiton = 0.25 | |
| private let UIPlaceHolderLabelTag = 1901 | |
| private let kMaxHeightForTextView = 90.0 | |
| var currentDynamicHeight: CGFloat { | |
| get { | |
| return self.bounds.height | |
| } | |
| } | |
| override var text: String! { | |
| didSet { | |
| self.viewWithTag(self.UIPlaceHolderLabelTag)?.alpha = 0.0 | |
| self.updateHeight() | |
| } | |
| } | |
| override func draw(_ rect: CGRect) { | |
| if !self.placeHolderText.isEmpty { | |
| if self.placeHolderLabel == nil { | |
| setupPlaceholderLabel() | |
| } | |
| self.placeHolderLabel.text = self.placeHolderText | |
| self.placeHolderLabel.sizeToFit() | |
| self.sendSubview(toBack: self.placeHolderLabel) | |
| } | |
| if self.text.isEmpty && !(self.placeHolderLabel.text?.isEmpty)! { | |
| self.viewWithTag(self.UIPlaceHolderLabelTag)?.alpha = 1 | |
| } | |
| super.draw(rect) | |
| } | |
| private func setupPlaceholderLabel() { | |
| self.placeHolderLabel = UILabel(frame: CGRect(x: 8, y: 4, width: self.bounds.size.width - 16, height: 0)) | |
| self.placeHolderLabel.lineBreakMode = .byWordWrapping | |
| self.placeHolderLabel.numberOfLines = 0 | |
| self.placeHolderLabel.font = self.font | |
| self.placeHolderLabel.backgroundColor = .clear | |
| self.placeHolderLabel.textColor = self.placeHolderColor | |
| self.placeHolderLabel.alpha = 0 | |
| self.placeHolderLabel.tag = self.UIPlaceHolderLabelTag | |
| self.addSubview(self.placeHolderLabel) | |
| } | |
| override func awakeFromNib() { | |
| super.awakeFromNib() | |
| self.setupPlaceholder() | |
| } | |
| override init(frame: CGRect, textContainer: NSTextContainer?) { | |
| super.init(frame: frame, textContainer: textContainer) | |
| self.setupPlaceholder() | |
| } | |
| required init?(coder aDecoder: NSCoder) { | |
| super.init(coder: aDecoder) | |
| self.setupPlaceholder() | |
| } | |
| deinit { | |
| NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UITextViewTextDidChange, object: nil) | |
| } | |
| private func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool { | |
| let whitescpaceSet = NSCharacterSet.whitespaces | |
| let range = string.rangeOfCharacter(from: whitescpaceSet) | |
| if let _ = range { | |
| return false | |
| } else { | |
| return true | |
| } | |
| } | |
| private func setupPlaceholder() { | |
| if self.placeHolderText == nil { | |
| self.placeHolderText = "" | |
| } | |
| if self.placeHolderColor == nil { | |
| self.placeHolderColor = defaultColor | |
| } | |
| self.layer.cornerRadius = 5.0 | |
| self.layer.borderWidth = 0.5 | |
| self.layer.borderColor = defaultColor.cgColor | |
| NotificationCenter.default.addObserver(self, selector: #selector(self.textChanged), name: NSNotification.Name.UITextViewTextDidChange, object: nil) | |
| } | |
| @objc private func textChanged(notification: Notification?) { | |
| if self.placeHolderText.isEmpty { | |
| return | |
| } | |
| UIView.animate(withDuration: UIPlaceholderTextChangeAnimationDuraiton) { | |
| if self.text.isEmpty { | |
| self.viewWithTag(self.UIPlaceHolderLabelTag)?.alpha = 1.0 | |
| } else { | |
| self.viewWithTag(self.UIPlaceHolderLabelTag)?.alpha = 0.0 | |
| } | |
| self.updateHeight() | |
| } | |
| } | |
| private func updateHeight() { | |
| let fixedWidth = self.bounds.size.width | |
| let newSize = self.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude)) | |
| var newFrame = self.frame | |
| var height = newSize.height | |
| if Double(newSize.height) >= kMaxHeightForTextView { | |
| height = CGFloat(kMaxHeightForTextView) | |
| } | |
| let maxWidth = CGFloat(fmax(Double(newSize.width), Double(fixedWidth))) | |
| newFrame.size = CGSize(width: maxWidth, height:height) | |
| self.frame = newFrame | |
| self.scrollRangeToVisible(NSMakeRange(self.text.characters.count, 0)) | |
| } | |
| } | |