UILabel 与基于 Orientation 的 CGAffineTransformMakeRotation？（ARC、故事板、LLDB）

发布于 2024-12-31 22:40:33 字数 637 浏览 1 评论 0原文

我以前曾问过这个问题一次，但关注度为 0，而且帮助我的人已经好几周没有回复了，所以请原谅我，但我仍然需要帮助。

我正在使用 CGAffineTransformMakeRotation 将 UILabel 翻转 180 度，我想要基于 UIOrientationPortrait 和 UIOrientationPortraitUpsideDown 的旋转。我得到 1/2 的结果：当用户翻转到上下颠倒（从纵向）时，标签会变换 180 并上下颠倒（仍然面向主页按钮 [重要]），

但是

当我将其旋转回纵向时，标签保持不变翻转旋转状态并且不停留在主页按钮上。这就是我需要的帮助......

这是我的代码：

#define degreesToRadian(x) (M_PI * (x) / 180.0)

...

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    TranslateLabel.transform = CGAffineTransformMakeRotation(degreesToRadian(180));
}

原文

I had asked this question once before but has had 0 attention and the person helping me has not responded in weeks, so please forgive me but I still do need help.

Im working with CGAffineTransformMakeRotation to flip a UILabel 180 degrees, I want the rotation based on UIOrientationPortrait and UIOrientationPortraitUpsideDown. I get 1/2 the result: when users flip to upside down (from portrait) the label transforms 180 and turns upside down as well (still facing the home button [Important])

BUT

when I rotate it back to Portrait the label stays in the flipped rotation state and does not stay with the home button. Thats what I need help with....

Here is the code i have:

#define degreesToRadian(x) (M_PI * (x) / 180.0)

...

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    TranslateLabel.transform = CGAffineTransformMakeRotation(degreesToRadian(180));
}

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笑叹一世浮沉 2025-01-07 22:40:33

无论方向是什么，您都会将其颠倒旋转。如果您希望它根据方向以不同方式旋转，则必须执行以下操作：

-(void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
  switch(toInterfaceOrientation){
    case UIInterfaceOrientationPortrait:
      TranslateLabel.transform = CGAffineTransformIdentity;
      break;
    case UIInterfaceOrientationPortraitUpsideDown:
      TranslateLabel.transform = CGAffineTransformMakeRotation(degreesToRadian(180));
      break;
  }
}

这样，当设备颠倒时，它将上下旋转标签，而当设备处于纵向时，它将恢复正常方向。

You are rotating it upside down no matter what the orientation is. If you want it to rotate differently depending on the orientation, you have to do something like this:

-(void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
  switch(toInterfaceOrientation){
    case UIInterfaceOrientationPortrait:
      TranslateLabel.transform = CGAffineTransformIdentity;
      break;
    case UIInterfaceOrientationPortraitUpsideDown:
      TranslateLabel.transform = CGAffineTransformMakeRotation(degreesToRadian(180));
      break;
  }
}

That way, it will rotate the label upside down when the device is upside down and it will return it back to normal when the device is on portrait orientation.

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ヤ经典坏疍 2025-01-07 22:40:33

我认为您想要打开 toInterfaceOrientation，如果方向为 UIInterfaceOrientationPortraitUpsideDown 则按照上面的方式设置变换，当方向为 时设置为 CGAffineTransformIdentity UIInterfaceOrientationPortrait。（这假设您不允许旋转到其他方向。）