ios 文本框随键盘隐藏

//隐藏键盘1

UITextViewDelegate
self.imageDesc.delegate = self;
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString*)text
{
    if ([text isEqualToString:@"\n"]) {
        [textView resignFirstResponder];
        return NO;
    }
    return YES;
}

//隐藏键盘2
- (void)viewDidLoad
{
    [super viewDidLoad];
    self.wantuTitle.text = title;
    wantuMessage.delegate = self;
}

//该方法为点击输入文本框要开始输入是调用的代理方法：就是把view上移到能看见文本框的地方
- (void)textFieldDidBeginEditing:(UITextField *)textField{
    CGFloat keyboardHeight = 216.0f;
    if (self.view.frame.size.height - keyboardHeight <= textField.frame.origin.y + textField.frame.size.height) {
        CGFloat y = textField.frame.origin.y - (self.view.frame.size.height - keyboardHeight - textField.frame.size.height - 5);
        [UIView beginAnimations:@"srcollView" context:nil];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
        [UIView setAnimationDuration:0.275f];
        self.view.frame = CGRectMake(self.view.frame.origin.x, -y, self.view.frame.size.width, self.view.frame.size.height);
        [UIView commitAnimations];
    }
}

//该方法为点击虚拟键盘Return，要调用的代理方法：隐藏虚拟键盘
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
    [textField resignFirstResponder];
    return YES;
}

//该方法为完成输入后要调用的代理方法：虚拟键盘隐藏后，要恢复到之前的文本框地方
- (void)textFieldDidEndEditing:(UITextField *)textField{
    [UIView beginAnimations:@"srcollView" context:nil];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    [UIView setAnimationDuration:0.275f];
    self.view.frame = CGRectMake(self.view.frame.origin.x, 0, self.view.frame.size.width, self.view.frame.size.height);
    [UIView commitAnimations];
}

#pragma mark Table view methods
- (UIView *)bubbleView:(NSString *)text from:(BOOL)fromSelf {
// build single chat bubble cell with given text
UIView *returnView = [[UIView alloc] initWithFrame:CGRectZero];
returnView.backgroundColor = [UIColor clearColor];
   
UIImage *bubble = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:fromSelf?@"bubbleSelf":@"bubble" ofType:@"png"]];
UIImageView *bubbleImageView = [[UIImageView alloc] initWithImage:[bubble stretchableImageWithLeftCapWidth:21 topCapHeight:14]];
   
UIFont *font = [UIFont systemFontOfSize:12];
CGSize size = [text sizeWithFont:font constrainedToSize:CGSizeMake(150.0f, 1000.0f) lineBreakMode:UILineBreakModeCharacterWrap];
   
UILabel *bubbleText = [[UILabel alloc] initWithFrame:CGRectMake(21.0f, 14.0f, size.width+10, size.height+10)];
bubbleText.backgroundColor = [UIColor clearColor];
bubbleText.font = font;
bubbleText.numberOfLines = 0;
bubbleText.lineBreakMode = UILineBreakModeCharacterWrap;
bubbleText.text = text;

bubbleImageView.frame = CGRectMake(0.0f, 0.0f, 200.0f, size.height+40.0f);
if(fromSelf)
returnView.frame = CGRectMake(120.0f, 10.0f, 200.0f, size.height+50.0f);
else
returnView.frame = CGRectMake(0.0f, 10.0f, 200.0f, size.height+50.0f);

[returnView addSubview:bubbleImageView];
[bubbleImageView release];
[returnView addSubview:bubbleText];
[bubbleText release];
   
return [returnView autorelease];
}