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Adding shadow to UITextView makes text expand out of UITextViewFrame


Adding shadow to UITextView makes text expand out of UITextViewFrame

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Adding shadow to UITextView makes text expand out of UITextViewFrame
Tag : ios , By : ap.
Date : November 15 2020, 03:01 PM

wish of those help Unfortunately if you use textview.clipsToBounds = true than your shadows will not be visible.
What I recommend you do is set textview.clipsToBounds = true and the insert another UIView below the textview which has same frame as the textview and draw shadow and corner radius on that UIView.

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Adding drop shadow to UIWebView and UITextView


Tag : iphone , By : jamerson
Date : March 29 2020, 07:55 AM
With these it helps UIViews have CALayers, that have some built-in shadow support. Try these properties out:
view.layer.shadowColor
view.layer.shadowOffset
view.layer.shadowOpacity
view.layer.shadowRadius

UITextView bottom shadow on text


Tag : ios , By : Joe Sweeney
Date : March 29 2020, 07:55 AM
Hope this helps I find the best sulution. I use mask layer and CAGradientLayer. So if we use it for UITextView our layer will be dinamically. I create UIView, add my UITextView on this UIView and use layer for UIView
//this float need for creating second sublayer, for scrollIndicator
CGFloat layerWidth = 8.f;
CAGradientLayer *gl1 = [CAGradientLayer layer];
id col1 = (id)[[UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:1.0]CGColor];
id col2 = (id)[[UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0]CGColor];
gl1.colors = @[col2, col1, col1, col2];
gl1.locations = @[@0.0, @0.0, @0.85, @1.0];
//underTextView - this is my UIView
gl1.frame = CGRectMake(0, 0, self.underTextView.width - layerWidth, self.underTextView.height);
//layer for scrollIndicator - it must be visible always good
CAGradientLayer *gl2 = [CAGradientLayer layer];
gl2.colors = @[col1, col1];
gl2.locations = @[@0.0, @1.0];
gl2.frame = CGRectMake(self.underTextView.width - layerWidth, 0, layerWidth, self.underTextView.height);
//create main layer
CAGradientLayer *gl = [CAGradientLayer layer];
[gl addSublayer:gl1];
[gl addSublayer:gl2];
//add to mask of UIView
self.underTextView.layer.mask = gl;
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
CGFloat layerWidth = 8.f;
CAGradientLayer *gl1 = [CAGradientLayer layer];
id col1 = (id)[[UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:1.0]CGColor];
id col2 = (id)[[UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0]CGColor];
gl1.colors = @[col2, col1, col1, col2];
if (self.mainTextView.contentOffset.y < 5)
    gl1.locations = @[@0.0, @0.0, @0.85, @1.0];
if (self.mainTextView.contentOffset.y >=5 && self.mainTextView.contentOffset.y < 20) {
    CGFloat number = (self.mainTextView.contentOffset.y - 5) * 0.01;
    gl1.locations = @[@0.0, [NSNumber numberWithFloat:number], @0.85, @1.0];
}
if (self.mainTextView.contentOffset.y >= 20  && self.mainTextView.contentOffset.y < self.mainTextView.contentSize.height - self.mainTextView.height - 20)
    gl1.locations = @[@0.0, @0.15, @0.85, @1.0];
if (self.mainTextView.contentOffset.y >= (self.mainTextView.contentSize.height - self.mainTextView.height - 20) && self.mainTextView.contentOffset.y < (self.mainTextView.contentSize.height - self.mainTextView.height - 5)) {
    CGFloat number = 1 - (self.mainTextView.contentSize.height - self.mainTextView.contentOffset.y - self.mainTextView.height - 5) * 0.01;
    gl1.locations = @[@0.0, @0.15, [NSNumber numberWithFloat:number], @1.0];
}
if (self.mainTextView.contentOffset.y >= self.mainTextView.contentSize.height - self.mainTextView.height - 5)
    gl1.locations = @[@0.0, @0.15, @1.0, @1.0];
gl1.frame = CGRectMake(0, 0, self.underTextView.width - layerWidth, self.underTextView.height);
CAGradientLayer *gl2 = [CAGradientLayer layer];
gl2.colors = @[col1, col1];
gl2.locations = @[@0.0, @1.0];
gl2.frame = CGRectMake(self.underTextView.width - layerWidth, 0, layerWidth, self.underTextView.height);
CAGradientLayer *gl = [CAGradientLayer layer];
[gl addSublayer:gl1];
[gl addSublayer:gl2];
self.underTextView.layer.mask = gl;
}

Expand UITextView and UITableView When UITextView's Text Extends Beyond 1 Line


Tag : ios , By : Daniel Halsey
Date : March 29 2020, 07:55 AM
should help you out My answer is based on what we exactly use in production of our social app Impether, since you asked me on Twitter that you used the app and you saw expanding UITextView there.
First of all, we have a custom UITableViewCell based class containing the UITextView, which will be expanded (this class has a corresponding xib file also, which you can design on your own):
class MultiLineTextInputTableViewCell: UITableViewCell {

    //our cell has also a title, but you
    //can get rid of it
    @IBOutlet weak var titleLabel: UILabel!
    //UITextView we want to expand
    @IBOutlet weak var textView: UITextView!

    override init(style: UITableViewCellStyle, reuseIdentifier: String!) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    /// Custom setter so we can initialize the height of the text view
    var textString: String {
        get {
            return textView?.text ?? ""
        }
        set {
            if let textView = textView {
                textView.text = newValue
                textView.delegate?.textViewDidChange?(textView)
            }
        }
    }

    override func awakeFromNib() {
        super.awakeFromNib()        
        // Disable scrolling inside the text view so we enlarge to fitted size
        textView?.scrollEnabled = false        
    }

    override func setSelected(selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        if selected {
            textView?.becomeFirstResponder()
        } else {
            textView?.resignFirstResponder()
        }
    }
}
class YourTableViewController: UITableViewController {

    //in case where you want to have
    //multiple expanding text views
    var activeTextView: UITextView?

    override func viewDidLoad() {
        super.viewDidLoad()

        //registering nib for a cell to reuse
        tableView.registerNib(
            UINib(nibName: "MultiLineTextInputTableViewCell", bundle: nil),
            forCellReuseIdentifier: "MultiLineTextInputTableViewCell")

    }

    override func viewWillDisappear(animated: Bool) {
        super.viewWillDisappear(animated)
        //hide keyboard when view controller disappeared
        if let textView = activeTextView {
            textView.resignFirstResponder()
        }
    }

    // MARK: - Table view data source

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        //put your value here
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        //put your value here
        return 2
    }

    override func tableView(tableView: UITableView,
                            cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let row = indexPath.row
        let cell = tableView.dequeueReusableCellWithIdentifier(
            "MultiLineTextInputTableViewCell",
            forIndexPath: indexPath) as! MultiLineTextInputTableViewCell

        let titleText = "Title label for your cell"
        let textValue = "Text value you want for your text view"

        cell.titleLabel.text = titleText
        cell.textView.text = textValue

        //store row of a cell as a tag, so you can know
        //which row to reload when the text view is expanded
        cell.textView.tag = row
        cell.textView.delegate = self

        return cell

    }

    override func tableView(tableView: UITableView,
                            estimatedHeightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        //standard row height
        return 44.0
    }

    override func tableView(tableView: UITableView,
                            heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        return UITableViewAutomaticDimension
    }

    // Override to support conditional editing of the table view.
    override func tableView(tableView: UITableView,
                            canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
        // Return false if you do not want the specified item to be editable.
        return true
    }
}

//extension containing method responsible for expanding text view
extension YourTableViewController: UITextViewDelegate {

    func textViewDidEndEditing(textView: UITextView) {
        let value = textView.text
        //you can do something here when editing is ended
    }

    func textView(textView: UITextView, shouldChangeTextInRange range: NSRange,
                  replacementText text: String) -> Bool {
        //if you hit "Enter" you resign first responder
        //and don't put this character into text view text
        if text == "\n" {
            textView.resignFirstResponder()
            return false
        }
        return true
    }

    func textViewDidBeginEditing(textView: UITextView) {
        activeTextView = textView
    }

    //this actually resize a text view
    func textViewDidChange(textView: UITextView) {

        let size = textView.bounds.size
        let newSize = textView.sizeThatFits(CGSize(width: size.width,
            height: CGFloat.max))

        // Resize the cell only when cell's size is changed
        if size.height != newSize.height {
            UIView.setAnimationsEnabled(false)
            tableView?.beginUpdates()
            tableView?.endUpdates()
            UIView.setAnimationsEnabled(true)

            let thisIndexPath = NSIndexPath(forRow: textView.tag, inSection: 0)
            tableView?.scrollToRowAtIndexPath(thisIndexPath,
                                              atScrollPosition: .Bottom,
                                              animated: false)
        }
    }
} 

How do I get UITextView field to expand when adding text and scrolling is disabled?


Tag : ios , By : Ricardo
Date : March 29 2020, 07:55 AM
seems to work fine Everyone was very diligent about trying to help me resolve this issue. I tried each one and was not able to implement any of them with satisfactory results.
I was directed to this solution by an associate: https://stackoverflow.com/a/36070002/152205 and with the following modifications was able to solve my problem.
    // MARK: UITextViewDelegate
    func textViewDidChange(_ textView: UITextView) {
        let startHeight = textView.frame.size.height
        let calcHeight = textView.sizeThatFits(textView.frame.size).height

        if startHeight != calcHeight {

            UIView.setAnimationsEnabled(false)
            self.tableView.beginUpdates()
            self.tableView.endUpdates()

          // let scrollTo = self.tableView.contentSize.height - self.tableView.frame.size.height
          // self.tableView.setContentOffset(CGPoint(x: 0, y: scrollTo), animated: false)

            UIView.setAnimationsEnabled(true)
        }
    }

How to apply text shadow to UITextView?


Tag : ios , By : rajiv
Date : March 29 2020, 07:55 AM
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