GrowingTextView - SwiftGit

Textview Uncategorized

GrowingTextView

October 23, 2023

Requirements

iOS 8.0 or above

Installation

CocoaPods

GrowingTextView is available through CocoaPods. To install it, simply add the following line to your Podfile:

Swift 5.0


                                              
                                                pod ‘GrowingTextView’, ‘0.7.2’

Swift 4.2


                                              
                                                pod ‘GrowingTextView’, ‘0.6.1’

Swift 4.1


                                              
                                                pod ‘GrowingTextView’, ‘~> 0.5’

Swift 3


                                              
                                                pod ‘GrowingTextView’, ‘~> 0.4’

Swift 2.3 (Stopped update since Sep 2016)


                                              
                                                pod ‘GrowingTextView’, :git => ‘https://github.com/KennethTsang/GrowingTextView.git’, :branch => ‘swift2’

Carthage

GrowingTextView is also available through Carthage. To install it, add the following line to your Cartfile:

Swift 5.0


                                              
                                                github “KennethTsang/GrowingTextView” ~> 0.7

Swift 4.2


                                              
                                                github “KennethTsang/GrowingTextView” ~> 0.6

Swift 4.1


                                              
                                                github “KennethTsang/GrowingTextView” ~> 0.5

Swift 3


                                              
                                                github “KennethTsang/GrowingTextView” ~> 0.4

Swift 2.3 (Stopped update since Sep 2016)


                                              
                                                github “KennethTsang/GrowingTextView” “swift2”

Manually

Copy GrowingTextView.swift into your project.

Usage

Example

GrowingTextview is just a textview, download the example to see how to use it as a input toolbar like other instant messaging apps.

Using GrowingTextview programmatically


                                              
                                                let textView = GrowingTextView()

textView.delegate = self

addSubview(textView)

Using GrowingTextview in Storyboard

Drag a TextView into Storyboard.
Set class to “GrowingTextView”.
Set delegate to it’s view controller.

automaticallyAdjustsScrollViewInsets

Sometime the view controller may incorrectly adjust the inset of textview automatically. To avoid this, set automaticallyAdjustsScrollViewInsets to false


                                              
                                                override func viewDidLoad() {

super.viewDidLoad()

automaticallyAdjustsScrollViewInsets = false

}

Customization

Parameter	Type	Description	Default
maxLength	Int	Maximum text length. Exceeded text will be trimmed. 0 means no limit.	0
trimWhiteSpaceWhenEndEditing	Bool	Trim white space and new line characters when textview did end editing.	true
placeholder	String?	Placeholder text.	nil
placeholderColor	UIColor	Placeholder text color.	UIColor(white: 0.8, alpha: 1.0)
attributedPlaceholder	NSAttributedString?	Attributed Placeholder text.	nil
minHeight	CGFloat	Minimum height of textview.	0.0
maxHeight	CGFloat	Maximum height of textview.	0.0

Examples


                                              
                                                textView.maxLength = 140

textView.trimWhiteSpaceWhenEndEditing = false

textView.placeholder = “Say something…”

textView.placeholderColor = UIColor(white: 0.8, alpha: 1.0)

textView.minHeight = 25.0

textView.maxHeight = 70.0

textView.backgroundColor = UIColor.whiteColor()

textView.layer.cornerRadius = 4.0

Animation

Adopt GrowingTextViewDelegate instead of UITextViewDelegate.
Implement textViewDidChangeHeight.
Call layoutIfNeeded() on superview inside the animation.


                                              
                                                class ViewController: UIViewController, GrowingTextViewDelegate {

func textViewDidChangeHeight(_ textView: GrowingTextView, height: CGFloat) {

UIView.animate(withDuration: 0.2) {

self.view.layoutIfNeeded()

}

}

}

Delegate

GrowingTextViewDelegate is inherited from UITextViewDelegate. You may use it’s delegate function as a normal UITextView.


                                              
                                                class ViewController: UIViewController, GrowingTextViewDelegate {

func textViewDidChange(_ textView: UITextView) {

…

}

func textViewDidEndEditing(_ textView: UITextView) {

…

}

}

Check out UITextViewDelegate here: https://developer.apple.com/reference/uikit/uitextviewdelegate

GitHub

View Github

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