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Clear the content of UITextView in Swift

Should IBOutlets be strong or weak under ARC?How do I size a UITextView to its content?How to lose margin/padding in UITextView?Placeholder in UITextViewUITextView text manipulationUITextView delegate methodsHow to call Objective-C code from Swift#pragma mark in Swift?Detecting tap on a UITextViewHow to limit the number of lines in UITextView?UITextView - Scrolling to selected place

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-2

0

I have a UITextView and a UIButton in my app and I'm trying to get the text content of the UITextView to be cleared when the UIButton is tapped.

My code:

@IBOutlet weak var textView: UITextView!

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 // I want to clear the text content of textView
 

Is there built-in function for that, in the UITextView class? I didn't find anything when I searched the UITextView class in Xcode.

My app is on Xcode 10.1 and Swift 4.2.

ios swift uitextview

share|improve this question

edited Mar 6 at 22:52

CaOs433

asked Mar 5 at 23:00

CaOs433CaOs433

15529

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Why downvotes? What’s wrong with the question?
  
  – CaOs433
  Mar 6 at 4:07
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yeah, not sure why the down votes. As an extra check, can we assume you've connected your outlets correctly in Interface Builder? The other answers given by others below are good suggestions to clearing text. By the way, I believe your UITextView outlet should be strongly referenced not weakly referenced according to: stackoverflow.com/questions/7678469/…
  
  – Zhang
  Mar 6 at 5:49
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Zhang Why I should use Strong rather than Weak? There was a lot of opinions in the link you posted and Xcode uses Weak for default.
  
  – CaOs433
  Mar 7 at 2:28
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Well, numerous people have cited Apple engineers recommending to use strong, one even mentioned performance benefits. As long as your app is working, whatever floats the boat I guess. I myself like to think of buttons defined inside a UIViewController as belonging to that controller, forming a single self contained coherent unit, so I maintain a strong reference to it. The thought of something weakly attached to my UIViewController feels like it's dangling on, gives me an uncomfortable feeling metaphorically speaking.
  
  – Zhang
  Mar 7 at 14:12
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Zhang Ok, thanks for the clarification.
  
  – CaOs433
  Mar 8 at 2:13
  

  
  
  
  

add a comment | 

-2

0

I have a UITextView and a UIButton in my app and I'm trying to get the text content of the UITextView to be cleared when the UIButton is tapped.

My code:

@IBOutlet weak var textView: UITextView!

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 // I want to clear the text content of textView
 

Is there built-in function for that, in the UITextView class? I didn't find anything when I searched the UITextView class in Xcode.

My app is on Xcode 10.1 and Swift 4.2.

ios swift uitextview

share|improve this question

edited Mar 6 at 22:52

CaOs433

asked Mar 5 at 23:00

CaOs433CaOs433

15529

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Why downvotes? What’s wrong with the question?
  
  – CaOs433
  Mar 6 at 4:07
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yeah, not sure why the down votes. As an extra check, can we assume you've connected your outlets correctly in Interface Builder? The other answers given by others below are good suggestions to clearing text. By the way, I believe your UITextView outlet should be strongly referenced not weakly referenced according to: stackoverflow.com/questions/7678469/…
  
  – Zhang
  Mar 6 at 5:49
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Zhang Why I should use Strong rather than Weak? There was a lot of opinions in the link you posted and Xcode uses Weak for default.
  
  – CaOs433
  Mar 7 at 2:28
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Well, numerous people have cited Apple engineers recommending to use strong, one even mentioned performance benefits. As long as your app is working, whatever floats the boat I guess. I myself like to think of buttons defined inside a UIViewController as belonging to that controller, forming a single self contained coherent unit, so I maintain a strong reference to it. The thought of something weakly attached to my UIViewController feels like it's dangling on, gives me an uncomfortable feeling metaphorically speaking.
  
  – Zhang
  Mar 7 at 14:12
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Zhang Ok, thanks for the clarification.
  
  – CaOs433
  Mar 8 at 2:13
  

  
  
  
  

add a comment | 

I have a UITextView and a UIButton in my app and I'm trying to get the text content of the UITextView to be cleared when the UIButton is tapped.

My code:

@IBOutlet weak var textView: UITextView!

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 // I want to clear the text content of textView
 

Is there built-in function for that, in the UITextView class? I didn't find anything when I searched the UITextView class in Xcode.

My app is on Xcode 10.1 and Swift 4.2.

ios swift uitextview

share|improve this question

edited Mar 6 at 22:52

CaOs433

asked Mar 5 at 23:00

CaOs433CaOs433

15529

@IBOutlet weak var textView: UITextView!

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 // I want to clear the text content of textView
 

share|improve this question

edited Mar 6 at 22:52

CaOs433

asked Mar 5 at 23:00

CaOs433CaOs433

15529

share|improve this question

edited Mar 6 at 22:52

CaOs433

asked Mar 5 at 23:00

CaOs433CaOs433

15529

asked Mar 5 at 23:00

CaOs433CaOs433

15529

asked Mar 5 at 23:00

CaOs433CaOs433

15529

3 Answers
3

active

oldest

votes

1

Small improvement:

textView.text = nil

share|improve this answer

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

add a comment | 

1

Try using textView.text = "". If that's not working it could be that you're using a placeholder. Try textView.placeholder = ""

share|improve this answer

answered Mar 6 at 1:31

EvanEvan

426

add a comment | 

0

I didn't find a ready function to clear the text content of an UITextView so I created this code to do that:

The UITextView variable:

@IBOutlet weak var textView: UITextView!

Function to clear the UITextView:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.selectAll(textView)
 if let range = textView.selectedTextRange textView.replace(range, withText: "") 
 

When the clear-button is tapped, the function checks is there any text in the UITextView and if there is some, it will select all the text in the UITextView and replace it with an empty String.

EDIT:

There is also the simple way to do it, which, for some reason, didn't work when I tried it before (probably because the bugs in Xcode 10.1), but this way the user can't undo it, if they accidentally tap the clear button:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.text = ""

Or with extension:

extension UITextView 
 func clear() 
 self.text = ""
 

Call textView.clear() when you want to clear the text.

share|improve this answer

edited Mar 8 at 2:12

answered Mar 5 at 23:00

CaOs433CaOs433

15529

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Why not textView.text = "" ?
  
  – Sh_Khan
  Mar 5 at 23:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried but it didn't work
  
  – CaOs433
  Mar 5 at 23:04
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Do you mean to clear a portion/selected or all the content ?
  
  – Sh_Khan
  Mar 5 at 23:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  All the content
  
  – CaOs433
  Mar 5 at 23:06
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This only @IBAction func ClearButtonTapped(_ sender: UIButton) textView.text = "" doesn't work ?
  
  – Sh_Khan
  Mar 5 at 23:07
  

  
  
  
  

 | 
show 4 more comments

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1

Small improvement:

textView.text = nil

share|improve this answer

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

add a comment | 

1

Small improvement:

textView.text = nil

share|improve this answer

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

add a comment | 

Small improvement:

textView.text = nil

share|improve this answer

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

share|improve this answer

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

answered Mar 6 at 0:50

MQLNMQLN

1,6171926

1

Try using textView.text = "". If that's not working it could be that you're using a placeholder. Try textView.placeholder = ""

share|improve this answer

answered Mar 6 at 1:31

EvanEvan

426

add a comment | 

1

Try using textView.text = "". If that's not working it could be that you're using a placeholder. Try textView.placeholder = ""

share|improve this answer

answered Mar 6 at 1:31

EvanEvan

426

add a comment | 

Try using textView.text = "". If that's not working it could be that you're using a placeholder. Try textView.placeholder = ""

share|improve this answer

answered Mar 6 at 1:31

EvanEvan

426

share|improve this answer

answered Mar 6 at 1:31

EvanEvan

426

answered Mar 6 at 1:31

EvanEvan

426

answered Mar 6 at 1:31

EvanEvan

426

0

I didn't find a ready function to clear the text content of an UITextView so I created this code to do that:

The UITextView variable:

@IBOutlet weak var textView: UITextView!

Function to clear the UITextView:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.selectAll(textView)
 if let range = textView.selectedTextRange textView.replace(range, withText: "") 
 

When the clear-button is tapped, the function checks is there any text in the UITextView and if there is some, it will select all the text in the UITextView and replace it with an empty String.

EDIT:

There is also the simple way to do it, which, for some reason, didn't work when I tried it before (probably because the bugs in Xcode 10.1), but this way the user can't undo it, if they accidentally tap the clear button:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.text = ""

Or with extension:

extension UITextView 
 func clear() 
 self.text = ""
 

Call textView.clear() when you want to clear the text.

share|improve this answer

edited Mar 8 at 2:12

answered Mar 5 at 23:00

CaOs433CaOs433

15529

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Why not textView.text = "" ?
  
  – Sh_Khan
  Mar 5 at 23:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried but it didn't work
  
  – CaOs433
  Mar 5 at 23:04
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Do you mean to clear a portion/selected or all the content ?
  
  – Sh_Khan
  Mar 5 at 23:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  All the content
  
  – CaOs433
  Mar 5 at 23:06
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This only @IBAction func ClearButtonTapped(_ sender: UIButton) textView.text = "" doesn't work ?
  
  – Sh_Khan
  Mar 5 at 23:07
  

  
  
  
  

 | 
show 4 more comments

0

I didn't find a ready function to clear the text content of an UITextView so I created this code to do that:

The UITextView variable:

@IBOutlet weak var textView: UITextView!

Function to clear the UITextView:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.selectAll(textView)
 if let range = textView.selectedTextRange textView.replace(range, withText: "") 
 

When the clear-button is tapped, the function checks is there any text in the UITextView and if there is some, it will select all the text in the UITextView and replace it with an empty String.

EDIT:

There is also the simple way to do it, which, for some reason, didn't work when I tried it before (probably because the bugs in Xcode 10.1), but this way the user can't undo it, if they accidentally tap the clear button:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.text = ""

Or with extension:

extension UITextView 
 func clear() 
 self.text = ""
 

Call textView.clear() when you want to clear the text.

share|improve this answer

edited Mar 8 at 2:12

answered Mar 5 at 23:00

CaOs433CaOs433

15529

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Why not textView.text = "" ?
  
  – Sh_Khan
  Mar 5 at 23:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried but it didn't work
  
  – CaOs433
  Mar 5 at 23:04
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Do you mean to clear a portion/selected or all the content ?
  
  – Sh_Khan
  Mar 5 at 23:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  All the content
  
  – CaOs433
  Mar 5 at 23:06
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This only @IBAction func ClearButtonTapped(_ sender: UIButton) textView.text = "" doesn't work ?
  
  – Sh_Khan
  Mar 5 at 23:07
  

  
  
  
  

 | 
show 4 more comments

I didn't find a ready function to clear the text content of an UITextView so I created this code to do that:

The UITextView variable:

@IBOutlet weak var textView: UITextView!

Function to clear the UITextView:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.selectAll(textView)
 if let range = textView.selectedTextRange textView.replace(range, withText: "") 
 

When the clear-button is tapped, the function checks is there any text in the UITextView and if there is some, it will select all the text in the UITextView and replace it with an empty String.

EDIT:

There is also the simple way to do it, which, for some reason, didn't work when I tried it before (probably because the bugs in Xcode 10.1), but this way the user can't undo it, if they accidentally tap the clear button:

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.text = ""

Or with extension:

extension UITextView 
 func clear() 
 self.text = ""
 

Call textView.clear() when you want to clear the text.

share|improve this answer

edited Mar 8 at 2:12

answered Mar 5 at 23:00

CaOs433CaOs433

15529

@IBOutlet weak var textView: UITextView!

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.selectAll(textView)
 if let range = textView.selectedTextRange textView.replace(range, withText: "") 
 

@IBAction func ClearButtonTapped(_ sender: UIButton) 
 textView.text = ""

extension UITextView 
 func clear() 
 self.text = ""
 

share|improve this answer

edited Mar 8 at 2:12

answered Mar 5 at 23:00

CaOs433CaOs433

15529

answered Mar 5 at 23:00

CaOs433CaOs433

15529

answered Mar 5 at 23:00

CaOs433CaOs433

15529