【iOS知识学习】_iPhone学习多个UITextField 键盘弹起

1.textField.delegate = self 和
UITextFieldDelegate 还是要写的
2.代码中的 
#define KEYBOARDHEIGHT216.0f//英文键盘的高度
#define DEFAULTHEIGHT100.0f//根据键盘高度
3.code：
#pragma mark - UITextField Delegate

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{

   CGFloat offset  =self.view.frame.size.height
- (textField.frame.origin.y + textField.frame.size.height+KEYBOARDHEIGHT+DEFAULTHEIGHT);
    
   NSLog(@"%f",offset);
    
   if (offset<=0)
    {
        [UIViewanimateWithDuration:0.3animations:^{
           CGRect frame =self.view.frame;
            frame.origin.y = offset;
           self.view.frame
= frame;
        }];
    }
    
   returnYES;
}

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
    [UIViewanimateWithDuration:0.3animations:^{
       CGRect frame =self.view.frame;
        frame.origin.y =0.0;
       self.view.frame
= frame;
    }];

   returnYES;
}