控件上移 之 虚拟键盘挡住UITextFiled控件

一些视图中用到了好多文本框，但是文本框挡住了我控件，所以呢下面3个方法就能解决这个问题哦

#pragma mark - 解决虚拟键盘挡住UITextField的方法
- (void)keyboardWillShow:(NSNotification *)noti
{
    //键盘输入的界面调整
    //键盘的高度
    float height = 216.0;
    CGRect frame = self.userPass.superview.frame;
    frame.size = CGSizeMake(frame.size.width, frame.size.height - height);
    [UIView beginAnimations:@"Curl"context:nil];//动画开始
    [UIView setAnimationDuration:0.30];
    [UIView setAnimationDelegate:self];
    [self.view setFrame:frame];
    [UIView commitAnimations];
}

-(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);
    self.view.frame = rect;
    [UIView commitAnimations];
    [textField resignFirstResponder];
    return YES;
}

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    NSLog(@"%@",textField.superview);
    CGRect frame = textField.superview.frame;
    int offset = frame.origin.y + textField.bottom+10 - (self.view.frame.size.height - 216.0);//键盘高度216
    NSTimeInterval animationDuration = 0.30f;
    [UIView beginAnimations:@"ResizeForKeyBoard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    float width = self.view.frame.size.width;
    float height = self.view.frame.size.height;
    if(offset > 0)
    {
        CGRect rect = CGRectMake(0.0f, -offset,width,height);
        self.view.frame = rect;
    }
    [UIView commitAnimations];
}