In iOS 6 I used this code to get the number of lines in the UITextView
:
int numLines = textView.contentSize.height / textView.font.lineHeight;
But this is not working in iOS 7. How do I get the total number of lines of the UITextView in iOS 7?
You can use something like this. It's low performance but this is what I could figure till now.
NSString *string=textView3.text;
NSArray *array=[string componentsSeparatedByString:@"\n"];
NSLog(@"%d",array.count);
You can do this with the UITextInputTokenizer
/ UITextInput
protocol methods of UITextView.
id<UITextInputTokenizer> tokenizer = textView.tokenizer;
UITextPosition *pos = textView.endOfDocument; int lines = 0;
while (true){
UITextPosition *lineEnd = [tokenizer positionFromPosition:pos toBoundary:UITextGranularityLine inDirection:UITextStorageDirectionBackward];
if([textView comparePosition:pos toPosition:lineEnd] == NSOrderedSame){
pos = [tokenizer positionFromPosition:lineEnd toBoundary:UITextGranularityCharacter inDirection:UITextStorageDirectionBackward];
if([textView comparePosition:pos toPosition:lineEnd] == NSOrderedSame) break;
continue;
}
lines++; pos = lineEnd;
}
//lines--; // Compensation for extra line calculated (??)
( GIST )
you can pass the String and textView to this method and it will return the current number rows in this textview even if the user pressed new line:
-(int)numberOfRows:(NSString *)string inView:(UITextView*)txtView
{
CGSize maximumLabelSize = CGSizeMake(MAXFLOAT , MAXFLOAT);
NSStringDrawingOptions options = NSStringDrawingTruncatesLastVisibleLine |
NSStringDrawingUsesLineFragmentOrigin;
NSString *new = [string stringByReplacingOccurrencesOfString: @"\n" withString:@" "];
NSDictionary *attr = @{NSFontAttributeName: [UIFont fontWithName:urFont size:urSize]};
CGRect bounds = [new boundingRectWithSize:maximumLabelSize
options:options
attributes:attr
context:nil];
CGSize viewSize = bounds.size;
int row = floor(txtView.contentSize.height / viewSize.height ) ;
return row;
}
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