santosh santosh - 27 days ago 6
Objective-C Question

How to Read Number of lines in UITextView

I am using

UITextView
In my View , I have requirement to count number of line contained by textview am using following function to read
'\n'
. However this works only when return key is pressed from keyboard , but in case line warapper (when i type continuous characters i wont get new line char ) . How do i read new char when line is changed without hitting return key ?? Anybody has nay idea how to .. please share it ..
I am follwing this link Link

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range
replacementText:(NSString *)text
{
// Any new character added is passed in as the "text" parameter
if ([text isEqualToString:@"\n"]) {
// Be sure to test for equality using the "isEqualToString" message
[textView resignFirstResponder];

// Return NO so that the final '\n' character doesn't get added
return NO;
}
// For any other character return YES so that the text gets added to the view
return YES;
}

Answer

You can look at the contentSize property of your UITextView to get the height of the text in pixels, and divide by the line height spacing of the UITextView's font to get the number of text lines in the total UIScrollView (on and off screen), including both wrapped and line broken text.