How to create a UITextView that automatically wraps lines of text?

I am creating an app that creates a UITextView programmatically. The problem is, when the user 开发者_StackOverflow中文版types in text or the app sets the text, the words spread across one line and off the screen, rather than wrapping to the next line. When I create a UITextView with interface builder, the text wraps automatically, but not when it is created programmatically.

Code:

UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(100, 12, 210, 60)];
[[self view] addSubview:textView];
[textView becomeFirstResponder];

Available since iOS 7:

textView.textContainer.lineBreakMode = NSLineBreakByWordWrapping;

UITextView and UITextField are different classes. UITextField is single line and UITextView is multiline. Create a UITextView rather than a UITextField programmatically and you have solved your problem I expect.

The entire point of UITextView is to allow multiple lines of text. From the documentation:

The UITextView class implements the behavior for a scrollable, multiline text region. The class supports the display of text using a custom font, color, and alignment and also supports text editing. You typically use a text view to display multiple lines of text, such as when displaying the body of a large text document.

Since UITextView inherits from UIScrollView, you may be able to force it to cooperate by disabling the horizontal scrolling. To do this, you want to set the contentSize, e.g.

CGSize scrollableSize = CGSizeMake(210, 480);
[textView setContentSize:scrollableSize];

This will fix the width to 210 and allow the height to scroll to 480. Since you are setting the textView to size (210,60), this should allow the vertical scrolling but not the horizontal scrolling.