i want to implement Code by which i can start to insert text at any position of cursor in UITextView in iphone sdk
any idea?
thank you in advance..
i refereed this link: iPhone SDK: How to create a UITextView that inserts text where you tap?
But not Getting it.
Dan's answer is manually changing the text. It's not playing well with UITextView's UndoManager.
Actually it's very easy to insert text with UITextInput protocol API, which is supported by UITextView and UITextField.
[textView replaceRange:textView.selectedTextRange withText:insertingString];
Note: It's selectedTextRange in UITextInput protocol, rather than selectedRange
This is what I use with a custom keyboard, seems to work ok, there may be a cleaner approach, not sure.
NSRange range = myTextView.selectedRange;
NSString * firstHalfString = [myTextView.text substringToIndex:range.location];
NSString * secondHalfString = [myTextView.text substringFromIndex: range.location];
myTextView.scrollEnabled = NO; // turn off scrolling
NSString * insertingString = [NSString stringWithFormat:#"your string value here"];
myTextView.text = [NSString stringWithFormat: #"%#%#%#",
firstHalfString,
insertingString,
secondHalfString];
range.location += [insertingString length];
myTextView.selectedRange = range;
myTextView.scrollEnabled = YES; // turn scrolling back on.
The simplest way (but it won't replace selected text) is to use the insertText: method:
[textView insertText:#"some text you want to insert"];
UITextView conforms to UITextInput which itself conforms to UIKeyInput.
Here is the Glorfindel's answer in Swift3. The text its inserting here it pulls out of the clipboard.
if let textRange = myTextView.selectedTextRange {
myTextView.replace(textRange, withText:UIPasteboard.general.string!)
}
Related
i am having this code to get the text between "." for example i am having lots of text like .1 this is first.2 this is second.3 this is fourth etc etc.when i tap the first ext it displays the first text in log .the code is
- (void)textViewDidBeginEditing:(UITextView *)textView
{
[NSTimer scheduledTimerWithTimeInterval:0.001 target:maintextview selector:#selector(resignFirstResponder) userInfo:nil repeats:NO];
}
- (void)textViewDidEndEditing:(UITextView *)textView
{
NSRange selectedRange = [textView selectedRange];
NSString *backString = [maintextview.text substringToIndex:selectedRange.location];
NSRange backRange = [backString rangeOfString:#"." options:NSBackwardsSearch];
NSRange backRangee = [backString rangeOfString:#"." options:NSBackwardsSearch];
int myRangeLenght = backRangee.location - backRange.location;
NSRange myStringRange = NSMakeRange (backRange.location, myRangeLenght);
NSString *forwardString = [maintextview.text substringFromIndex:backRange.location];
NSLog(#"%#",[[forwardString componentsSeparatedByString:#"."] objectAtIndex:1]);
}
forwadString contains the tapped text,i just want to highlight this string or draw a color above this text using core graphics or something like that.is out possible?
thanks in advance
Much to my and many other's disappointment, Apple chose not to implement NSAttributedString until iOS 3.2, and even then, all standard UI elements are incapable of rendering them!
Luckily, the few, the proud, and the brave have answered the call and DTCoreText was born.
As for an actual selection, because UITextView conforms to UITextInput as of iOS 3.2, you can use and set the selectedTextRange.
It's impossible to 'colour' an NSString, a string is just a representation of characters, it holds no font, colour or style properties. Instead you need to colour the UI element that draws the text to the screen.
If forwardString is in a UILabel or UITextView you can colour the text inside these by setting the textColor property. For example if you had a UILabel called lbl you could set the colour by using:
lbl.textColor = [UIColor redColor];
I want to replace the text in UITextView text in selected range. This is my question. Here i mention what i did? and what i want to do?. I have an UITextView and entered the below text in textview.
Ask question here, i have saved the range in of the text in textview. The text range is {17, 0}. I take the NSRange in -(void) textViewDidChange:(UITextView *)textView delegate.
Now i want to replace the text question with answer and i want to replace the text here with them. The UITextView.text look like this,Ask answer them` after replaced the texts.
How can i replace the texts with the selected ranges? Can you please help me? Thanks in advance.
Since iOS 7 there is the textStorage in the textView that inherits from NSMutableAttributedString so you can use those methods:
Objective-C
[self.textView.textStorage replaceCharactersInRange:withString:];
or
[self.textView.textStorage replaceCharactersInRange:withAttributedString:];
Swift
textView.textStorage.replaceCharacters(in: range, with: string)
Well... I'm not sure to understand correctly what you're trying to do, but if your goal is to change some characters in a selected range you can follow these steps:
Get your UITextView content and put it in a NSString:
NSString *textViewContent = textView.text;
Change the characters in the range you want:
NSString *newContent = [textViewContent stringByReplacingCharactersInRange:range withString:replacement];
Replace old content with new one:
textView.text = newContent;
Anyway if you just want to replace Ask question here with Ask answer them the fastest solution is just:
textView.text = #"Ask answer them";
Well solution from top of my head..
NSArray *Dividedstring = [[self.TextView.text] componentsSeparatedByString:#" question here "]; // this will divide the string into two parts ..one before question here and second after question here.
NSString * firstpart = [Dividedstring objectAtIndex:0];
NSString * secondpart = [Dividedstring objectAtIndex:0];
self.TextView.text = [NSString stringwithFormat:#"%# answer here %#",firstpart,secondpart];
I want to get the current position of cursor when I first click on a UITextView that contains some text.
I believe the UITextView selectedRange property should provide what you're after.
you could use UITextView's selectedRange to return the insertion point pf text.
The below code shows how to it.
NSString *contentsToAdd = #"some string";
NSRange cursorPosition = [tf selectedRange];
NSMutableString *tfContent = [[NSMutableString alloc] initWithString:[tf text]];
[tfContent insertString:contentsToAdd atIndex:cursorPosition.location];
[theTextField setText:tfContent];
[tfContent release];
for More to read the SO Post
Getting cursor position in a UITextView on the iPhone?
Also read the same on Apple discussion forum.
http://discussions.apple.com/thread.jspa?messageID=9940169
I want to have to occasionally insert text into the UITextView text object. For example, if the user presses the "New Paragraph" button I would like to insert a double newline instead of just the standard single newline.
How can I go about such? Do i have to read the string from UITextView, mutate it, and write it back? Then how would I know where the pointer was?
Thanks
Since the text property of UITextView is immutable, you have to create a new string and set the text property to it. NSString has an instance method (-stringByAppendingString:) for creating a new string by appending the argument to the receiver:
textView.text = [textView.text stringByAppendingString:#"\n\n"];
UITextview has an insertText method and it respects cursor position.
- (void)insertText:(NSString *)text
for example:
[myTextView insertText:#"\n\n"];
Here's how I implemented it and it seems to work nicely.
- (void) insertString: (NSString *) insertingString intoTextView: (UITextView *) textView
{
NSRange range = textView.selectedRange;
NSString * firstHalfString = [textView.text substringToIndex:range.location];
NSString * secondHalfString = [textView.text substringFromIndex: range.location];
textView.scrollEnabled = NO; // turn off scrolling or you'll get dizzy ... I promise
textView.text = [NSString stringWithFormat: #"%#%#%#",
firstHalfString,
insertingString,
secondHalfString];
range.location += [insertingString length];
textView.selectedRange = range;
textView.scrollEnabled = YES; // turn scrolling back on.
}
For Swift 3.0
You can append text by calling method insertText of UITextView Instance.
Example:
textView.insertText("yourText")
This is a correct answer!
The cursor position is also right.
A scroll position is also right.
- (void) insertString: (NSString *) insertingString intoTextView: (UITextView *) textView
{
[textView replaceRange:textView.selectedTextRange withText:insertingString];
}
- (void)insertStringAtCaret:(NSString*)string {
UITextView *textView = self.contentCell.textView;
NSRange selectedRange = textView.selectedRange;
UITextRange *textRange = [textView textRangeFromPosition:textView.selectedTextRange.start toPosition:textView.selectedTextRange.start];
[textView replaceRange:textRange withText:string];
[textView setSelectedRange:NSMakeRange(selectedRange.location + 1, 0)];
self.changesDetected = YES; // i analyze the undo manager in here to enabled/disable my undo/redo buttons
}
I have a UITextView and 2 UITextField set up. UITextView resigns first responder status when empty part of the screen is tapped, the same for the 2 UITextField, plus for these 2, the return key also resigns first responder status. All 3 are declared in interface.
I would like to get the contents of all of these to individual NSString and/or learn how to enter them directly into something like:
NSString *urlstr = [[NSString alloc] initWithFormat:#"http://server.com/file.php?var1=%#&var2=%#&var3=%#", *content of UITextView*, *content of UITextField*, *content of UITextField*];
This is a very basic question, i know, but i'm pretty much a novice. If i learn how to do this i'll probably be able to pick up from there.
cheers
(edited)
UITextField and UITextView both have a text property that you can use to retrieve the string values. For example,
NSString *string = [NSString stringWithFormat:#"%#, %#", textField.text, textView.text];
Keep in mind you'll probably want to examine the strings to make sure they're not empty or contain invalid characters before putting them into a URL.
The accepted answer is good, I just wanted to add the following for an expanded look at grabbing text in iOS.
See the textInRange: aspect of the below code that I devised to use one function to determine the text whether it's a UITextField, UITextView or any other class that complies with the UITextInput protocol.
//handle text container object length whether it's a UITextField, UITextView et al
NSUInteger LengthOfStringInTextInput(NSObject<UITextInput> *textContainer)
{
UITextPosition *beginningOfDocument = [textContainer beginningOfDocument];
UITextPosition *endOfDocument = [textContainer endOfDocument];
UITextRange *fullTextRange = [textContainer textRangeFromPosition:beginningOfDocument
toPosition:endOfDocument];
return [textContainer textInRange:fullTextRange].length;
}
By changing the return type to NSString and removing .length you could have the functionality of the text property on any class.