設置虛擬鍵盤動畫

Question

我讓我的應用檢測到iPad上的方向，並相應地重新調整其位置，以使其在縱向和橫向上都能正常工作。

我在虛擬鍵盤方法中遇到的問題是我沒有考慮方向：在縱向模式下，一旦用戶點擊其中一個文本框，該方法將抬起視圖以為鍵盤騰出空間，並使文本框可見（未覆蓋）-但是，當用戶處於橫向並點擊一個文本框時，動畫將把視圖推向側面而不是向上，就像它仍然是縱向的一樣。 （同樣，如果我將iPad倒置，則會將其視野框向下推，而不是向上推）

- (void)textFieldDidBeginEditing:(UITextField *)textField{
    CGRect textFieldRect = [self.view.window convertRect:textField.bounds fromView:textField];

    CGRect viewRect = [self.view.window convertRect:self.view.bounds fromView:self.view];
    CGFloat midline = textFieldRect.origin.y + 0.5 * textFieldRect.size.height;
    CGFloat numerator = midline - viewRect.origin.y - MINIMUM_SCROLL_FRACTION * viewRect.size.height;
    CGFloat denominator = (MAXIMUM_SCROLL_FRACTION - MINIMUM_SCROLL_FRACTION) * viewRect.size.height;
    CGFloat heightFraction = numerator / denominator;
    if (heightFraction < 0.0)  {
        heightFraction = 0.0;
    }
    else if (heightFraction > 1.0)   {
        heightFraction = 1.0;
    }

    UIInterfaceOrientation orientation =[[UIApplication sharedApplication] statusBarOrientation];

    if (orientation == UIInterfaceOrientationPortrait ||
        orientation == UIInterfaceOrientationPortraitUpsideDown)   {
        animatedDistance = floor(PORTRAIT_KEYBOARD_HEIGHT * heightFraction);
    }
    else    {
        animatedDistance = floor(LANDSCAPE_KEYBOARD_HEIGHT * heightFraction);
    }

    CGRect viewFrame = self.view.frame;
    viewFrame.origin.y -= animatedDistance;
    // viewFrame.origin.x -= animatedDistance;


    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];
    [self.view setFrame:viewFrame];
    [UIView commitAnimations];
}

我也有：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
} 

當設備改變方向時，應如何更改方法以使其正確設置動畫？

謝謝

Answer 1

檢測方向，然后根據該信息確定將視圖移動到哪個方向。

if ([UIDevice currentDevice].orientation==UIDeviceOrientationLandscapeLeft)
    viewFrame.origin.x -= animatedDistance;
if ([UIDevice currentDevice].orientation==UIDeviceOrientationLandscapeRight)
    viewFrame.origin.x += animatedDistance;
if ([UIDevice currentDevice].orientation==UIDeviceOrientationPortrait)
    viewFrame.origin.y -= animatedDistance;
if ([UIDevice currentDevice].orientation==UIDeviceOrientationPortraitUpsideDown)
    viewFrame.origin.y += animatedDistance;