show the keyboard of a textfield on top of the screen

Question

在我的iPhone应用程序中，我的问题是我在屏幕底部有一个文本字段，所以当键盘出现时，他隐藏了文本，有一种方法可以在屏幕顶部显示键盘？

Answer 1

You should move your view when the keyboard appears. The code is:

In .m file

- (void) loginViewUp : (UIView*) view
{   
    if(!alreadyViewUp)
    {
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.3];
        CGRect rect = view.frame;
        rect.origin.y -= View_Move_Hight;
        view.frame = rect;
        [UIView commitAnimations];
        alreadyViewUp = !alreadyViewUp;
    }
}

- (void) loginViewDown :(UIView*) view
{        
    if(alreadyViewUp)
    {
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.3];
        CGRect rect = view.frame;
        rect.origin.y += View_Move_Hight;
        view.frame = rect;
        [UIView commitAnimations];
        alreadyViewUp = !alreadyViewUp;
    }
}

In .h file

- (void) loginViewUp : (UIView*) view;

here

#define View_Move_Hight 170 

is defined before @implementation .

Answer 2

你应该设计你的视图，以便它通过键盘向上移动，iPhone用户习惯于键盘总是在屏幕的底部，所以这将违背HIG