本文转载至 http://wuchaorang.2008.blog.163.com/blog/static/48891852201232014813990/

1. #import <UIKit/UIKit.h>
2. @interface TextViewController : UIViewController <UITextViewDelegate>
3. {
4. UITextView *textView;
5. }
6. @property (nonatomic, retain) UITextView *textView;
7. @end

1. self.textView = [[[UITextView alloc] initWithFrame:self.view.frame]autorelease]; //初始化大小并自动释放
2. self.textView.textColor = [UIColor blackColor];//设置textview里面的字体颜色
3. self.textView.font = [UIFont fontWithName:@"Arial" size:18.0];//设置字体名字和字体大小
4. self.textView.delegate = self;//设置它的委托方法
5. self.textView.backgroundColor = [UIColor whiteColor];//设置它的背景颜色
6. self.textView.text = @"Now is the time for all good developers tocome to serve their country.\n\nNow is the time for all good developers to cometo serve their country.";//设置它显示的内容
7. self.textView.returnKeyType = UIReturnKeyDefault;//返回键的类型
8. self.textView.keyboardType = UIKeyboardTypeDefault;//键盘类型
9. self.textView.scrollEnabled = YES;//是否可以拖动
10. self.textView.autoresizingMask = UIViewAutoresizingFlexibleHeight;//自适应高度
11. [self.view addSubview: self.textView];//加入到整个页面中

1. - (void)textViewDidBeginEditing:(UITextView *)textView {
2. UIBarButtonItem *done =    [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(leaveEditMode)] autorelease];
3. self.navigationItem.rightBarButtonItem = done;
4. }
5. - (void)textViewDidEndEditing:(UITextView *)textView {
6. self.navigationItem.rightBarButtonItem = nil;
7. }
8. - (void)leaveEditMode {
9. [self.textView resignFirstResponder];
10. }

1. #pragma mark - UITextView Delegate Methods
2. -(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
3. {
4. if ([text isEqualToString:@"\n"]) {
5. [textView resignFirstResponder];
6. return NO;
7. }
8. return YES;
9. }

1. UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)];
2. [topView setBarStyle:UIBarStyleBlack];
3. UIBarButtonItem * helloButton = [[UIBarButtonItem alloc]initWithTitle:@"Hello" style:UIBarButtonItemStyleBordered target:self action:nil];
4. UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
5. UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)];
6. NSArray * buttonsArray = [NSArray arrayWithObjects:helloButton,btnSpace,doneButton,nil];
7. [doneButton release];
8. [btnSpace release];
9. [helloButton release];
10. [topView setItems:buttonsArray];
11. [tvTextView setInputAccessoryView:topView];
12. -(IBAction)dismissKeyBoard
13. {
14. [tvTextView resignFirstResponder];
15. }

1. NSString * desc = @"Description it is  a test font, and don't become angry for which i use to do here.Now here is a very nice party from american or not!";
2. CGSize  size = [desc sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(240, 2000) lineBreakMode:UILineBreakModeWordWrap];

1. [label  setNumberOfLines:0];
2. [label  setFrame:CGRectMake(40, 135, 240, size.height+10)];
3. [label setText:desc];

1. UIMenuItem *menuItem = [[UIMenuItem alloc]initWithTitle:@"分享到新浪微博" action:@selector(changeColor:)];
2. UIMenuController *menu = [UIMenuController sharedMenuController];
3. [menu setMenuItems:[NSArray arrayWithObject:menuItem]];
4. [menuItem release];

1. -(BOOL)canPerformAction:(SEL)action withSender:(id)sender
2. {
3. if(action ==@selector(changeColor:))
4. {
5. if(textView.selectedRange.length>0)
6. return YES;
7. }
8. return NO;
9. }