键盘点击return

-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;

}

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
    if ([@"\n" isEqualToString:text] == YES)
    {
        [textView resignFirstResponder];
        return YES;
    }
    return YES;
}

// 重绘位置

-(BOOL)textFieldShouldReturn:(UITextField *)textField
{       
    // When the user presses return, take focus away from the text field so that the keyboard is dismissed.       
    NSTimeInterval animationDuration = 0.30f;       
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];       
    [UIView setAnimationDuration:animationDuration];       
    CGRect rect = CGRectMake(0.0f, 0.0f, self.view.frame.size.width, self.view.frame.size.height);  
    //CGRect rect = CGRectMake(0.0f, 20.0f, self.view.frame.size.width, self.view.frame.size.height);
    self.view.frame = rect;
    [UIView commitAnimations];
    [textField resignFirstResponder];
    return YES;       
}