在.h文件中声明：
@interface ProtocolViewController :UIViewController<UITextViewDelegate>
{
UITextView *textView;
}
@property (nonatomic,retain)UITextView *textView;
@end
在.m中初始化：
self.textView=[[[UITextView
alloc] initWithFrame:self.view.frame] autorelease]; //初始化大小并自动释放 self.textView.textColor
= [UIColor blackColor];//设置textview里面的字体颜色 self.textView.font
= [UIFont fontWithName:@"Arial"size:18.0];//设置字体名字和字体大小self.textView.delegate
= self;//设置它的委托方法 self.textView.backgroundColor
= [UIColor whiteColor];//设置它的背景颜色 self.textView.text
= @"abcdefghi
kjhk
hkjhkjhksaejodslkae
nfdkshekhfkdsae
fdhskejhkfhskejh
gfdhsgaejhgfjhdsgaejhgfjhdsgaejhgfdjsagejhgfhjsagejhgfdsjahgejhfgdsjha";//设置它显示的内容self.textView.returnKeyType
= UIReturnKeyDefault;//返回键的类型self.textView.keyboardType
= UIKeyboardTypeDefault;//键盘类型self.textView.scrollEnabled
= YES;//是否可以拖动
self.textView.editable
=NO;//禁止编辑
self.textView.autoresizingMask
= UIViewAutoresizingFlexibleHeight;//自适应高度 [self.view
addSubview: self.textView];//加入到整个页面中