UITextView UITextField退出键盘的常用三种方式

（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。

 

- (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。

-(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。

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];
}