（1）如果你程序是有导航条的，可以在导航条上面加多一个Done的按钮，用来退出键盘，当然要先实现UITextViewDelegate。
- (void)textViewDidBeginEditing:(UITextView *)textView { UIBarButtonItem *done = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(leaveEditMode)] autorelease]; self.navigationItem.rightBarButtonItem = done; } - (void)textViewDidEndEditing:(UITextView *)textView { self.navigationItem.rightBarButtonItem = nil; } - (void)leaveEditMode { [self.textView resignFirstResponder]; }
（2）如果你的textview里不用回车键，可以把回车键当做退出键盘的响应键。
#pragma mark - UITextView Delegate Methods -(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text { if ([text isEqualToString:@"\n"]) { [textView resignFirstResponder]; return NO; } return YES; }
（3）还有你也可以自定义其他视图控件加载到键盘上用来退出，比如在弹出的键盘上面加一个view来放置退出键盘的Done按钮。
1 UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)]; 2 3 [topView setBarStyle:UIBarStyleBlack]; 4 5 UIBarButtonItem * helloButton = [[UIBarButtonItem alloc]initWithTitle:@"Hello" style:UIBarButtonItemStyleBordered target:self action:nil]; 6 7 UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; 8 9 10 11 UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)]; 12 13 NSArray * buttonsArray = [NSArray arrayWithObjects:helloButton,btnSpace,doneButton,nil]; 14 15 [doneButton release]; 16 17 [btnSpace release]; 18 19 [helloButton release]; 20 21 [topView setItems:buttonsArray]; 22 23 [tvTextView setInputAccessoryView:topView]; 24 25 -(IBAction)dismissKeyBoard 26 27 { 28 29 [tvTextView resignFirstResponder]; 30 31 }