IOS6 控件专辑(2)

//==============================================================================
#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;
}

这样无论你是使用电脑键盘上的回车键还是使用弹出键盘里的return键都可以达到退出键盘的效果。

（3）还有你也可以自定义其他加载键盘上面用来退出，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。

代码如下：

{
UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0,0,320, 30)];
[topView setBarStyle:UIBarStyleBlack];

UIBarButtonItem * helloButton = [[UIBarButtonItem alloc]initWithTitle:@"Hello" style:UIBarButtonItemStyleBordered
 target:self action:nil];

UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
 target:self action:nil];

UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone www.2cto.com
 target:self action:@selector(dismissKeyBoard)];

NSArray * buttonsArray =@[helloButton, btnSpace, doneButton];

[topView setItems:buttonsArray];

[tvTextView setInputAccessoryView:topView];
}

-(void)dismissKeyBoard
{
    [tvTextView resignFirstResponder];
}