UITextView 文本换行

转载自：http://blog.csdn.net/pclass/article/details/6726964

I need to indicated a 'new line' in a string in an XML file I'm loading.

If I hard code the string:

 myTextView.text =[NSString stringWithString:@"Line1 \nLine2 \nLine3"];

It displays: Line1
Line2
Line3

(as expected)

But if I put the exact string in my XML file:

<someNode string = "Line1 \nLine2 \nLine3" />

And then load it into the UITableView it displays:

Line1\nLine2 \nLine3

原因是从XML中读取出来的"\n"，系统认为是字符串，会默认转换为"\\n"，所以当显示的时候就是字符串了，要想显示换行，需要自己手动将"\\n"转换为"\n"，这样才能换行.

 NSString*b =[a stringByReplacingOccurrencesOfString:@"\\n" withString:@"\n"];