关于textView收回键盘的几种方法

<pre style="white-space: pre-wrap; word-wrap: break-word; color: rgb(85, 85, 85); font-size: 15px; line-height: 35px; background-color: rgb(255, 255, 255);">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UITextViewDelegate。

代码如下：

- (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。
代码如下：

#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.第三种方法感觉效果比上面两种都好，就是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 target:self action:@selector(dismissKeyBoard)];

NSArray * buttonsArray = [NSArray arrayWithObjects:helloButton,btnSpace,doneButton,nil];
[doneButton release];
[btnSpace release];
[helloButton release];

[topView setItems:buttonsArray];
[tvTextView setInputAccessoryView:topView];

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

以上内容来自http://blog.csdn.net/crazyzhang1990/article/details/12503169