旋转到横向时，键盘框架原点似乎是 (0,0)

Question

我试图让 UIView 出现在键盘上方，并确保它在视图旋转到横向时保持正确的定位，但是当我在旋转到横向时获得键盘的框架时，框架是： {{0, 0}, {162, 568}}。显然，原点的 Y 值不应为 0，因为键盘不在屏幕顶部。如何将它为我提供的键盘框架转换为我可以在横向中正确使用的 CGRect？

谢谢...

Answer 1

在你的方法中实现以下实现

if (self.view.bounds.size.width == 480)
{ // choose more appropriate method to detect landscape mode then the one specified here.

    /* Here we are calculating keyboard origin y by subtracting keyboard frame's width as
     * when the device is rotated to landscape, the keyboard device width and height 
     * appeared to be interchanged implicity but the keyboard's bounds still explicitly 
     * shows portrait bounds, so we are subtracting self.view.bounds size height 
     * with keyboard frame width
     */

    float keyboardOriginY = self.view.bounds.size.height - keyboardFrame.size.width;
    float delta = 30;  // Subtract with whatever delta value you want to position above keyboard frame
    keyboardFrame.origin.y = keyboardOriginY - delta;
    keyboardFrame.size.height = delta;

    UIView *view = [[UIView alloc] initWithFrame:keyboardFrame];
    [view setBackgroundColor:[UIColor greenColor]];
    [self.view addSubview:view];
}