text editing in text view xcode - ios

Question

I have a text view in which text is displayed like this:
how are you?
Fine
Now if i set font for text view, then the same font is displayed for the two lines(ques and answer), however i want question to be displayed in one font and answer in some other font. How can i do this?
I set font like this:
textView = [[UITextView alloc]initWithFrame:CGRectMake(10, 80, 300, 440)];
textView.layer.borderColor = [UIColor blackColor].CGColor;
[textView setFont:[UIFont fontWithName:#"TimesNewRomanPS-ItalicMT" size:14]];
textView.layer.borderWidth = 1.0;
textView.autoresizesSubviews = YES;
textView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.view addSubview:textView];
Thanks in advance!!

Answer 1

From the UITextView class reference:
In iOS 6 and later, this class supports multiple text styles through
use of the attributedText property. (Styled text is not supported in
earlier versions of iOS.) Setting a value for this property causes the
text view to use the style information provided in the attributed
string. You can still use the font, textColor, and textAlignment
properties to set style attributes, but those properties apply to all
of the text in the text view.
This class does not support multiple styles for text. The font, color,
and text alignment attributes you specify always apply to the entire
contents of the text view. To display more complex styling in your
application, you need to use a UIWebView object and render your
content using HTML.
So you cannot have two on the same page for iOS 5 or less because it is not supported. Just use a webview and an HTML file. for iOS6 maybe you can try using attributedText property of UITextView. This is available under iOS 6. Never tried it though.
Or have 2 different UITextView's (its ugly but thats what it is).

Answer 2

I'm guessing you wanted to create a chatroom like app?
if so, I recommend make it a UITableView. And then make different Cells to match different styles.

Answer 3

You can use attributed strings to achieve this, for example:
NSMutableAttributedString *para1 = [[NSMutableAttributedString alloc] initWithString:#"How are you?"];
NSMutableAttributedString *para2 = [[NSMutableAttributedString alloc] initWithString:#"\nFine"];
[para2 setAttributes:#{ NSForegroundColorAttributeName : [UIColor blueColor]} range:NSMakeRange(0, para2.length)];
[para1 insertAttributedString:para2 atIndex:para1.length];
self.textLabel.attributedText = para1;
Or with a single attributed string:
NSMutableAttributedString *para1 = [[NSMutableAttributedString alloc] initWithString:#"How are you?\nFine"];
// Get the range of the last line in the string
__block NSRange range;
[para1.mutableString enumerateLinesUsingBlock:^(NSString *line, BOOL *stop) {
range = [para1.mutableString rangeOfString:line];
}];
[para1 setAttributes:#{ NSForegroundColorAttributeName : [UIColor blueColor] } range:range];
self.textLabel.attributedText = para1;
Both examples result in: