This code demonstrates how to capture changes in screen orientation on iPad devices and apply different styles according to the orientation. The code is implemented by adding class names to HTML tags, similar to libraries such as Modernizr, and uses CSS3 media queries to achieve style switching.

jQuery(document).ready(function($) {
  // 捕獲iPad設(shè)備方向變化
  function doOnOrientationChange() {
    switch (window.orientation) {
      case -90:
      case 90:
        // 橫屏
        $('html').removeClass('portrait').addClass('landscape');
        break;
      default:
        // 豎屏
        $('html').removeClass('landscape').addClass('portrait');
        break;
    }
  }

  // 設(shè)置事件監(jiān)聽(tīng)器
  window.addEventListener('orientationchange', doOnOrientationChange);

  // 初始調(diào)用
  doOnOrientationChange();
});

CSS style example:

/* 平板電腦樣式 */
@media (min-width: 768px) and (max-width: 1024px) {
  .portrait {
    /* 豎屏樣式 */
  }
  .landscape {
    /* 橫屏樣式 */
  }
}

FAQ for iPad screen orientation changes

How to lock the direction of the iPad screen?

Open the control center by swiping down from the upper right corner of the screen, find the small lock icon with a rotating arrow (direction lock button) and click to lock the screen direction. Click again to unlock.

Why can't my iPad screen be changed?

This may be because the direction lock is enabled. Please check whether the direction lock button in the control center is highlighted. If so, click Unlock. If the problem persists, try restarting the iPad, which may be a temporary software failure.

Can I change the orientation settings on my iPad?

Yes, you can lock the screen direction to either vertical or horizontal. Open Control Center, click the Direction Lock button, rotate the iPad to the desired direction, and click the button to lock again.

How to change the orientation on my iPad without using the lock button?

If the lock button is not available, you can change the orientation through the auxiliary touch function. Go to Settings >Accessibility Functions >Touch >Accessive Touch and turn it on. Then, click the Assisted Touch button on the screen, select Devices, and select Rotate Screen.

Why does my iPad screen keep rotating?

This may be because the direction lock is not enabled. To stop the screen rotation, lock the direction through the Control Center.

Can I set the iPad to automatically change direction?

By default, the iPad automatically changes the orientation when rotating the device. If this does not occur, make sure the orientation lock is not enabled. If the problem persists, try restarting the device or updating the iPad software.

How to change direction on iPad Pro?

The screen orientation of the iPad Pro changes the same way as other iPad models. You can rotate the device to change the direction, or lock the direction through the control center.

Can I change the orientation of my iPad when using a specific app?

Yes, but some applications only support one direction (vertical or horizontal). If you cannot change the orientation while using an app, the app may not support other orientations.

Why is my iPad stuck in landscape mode?

This may be because the direction lock is enabled. Please check whether the direction lock button in the control center is highlighted. If so, click Unlock. If the problem persists, try restarting the iPad or updating the software.

How to rotate the screen on iPad Mini?

Simply rotate the iPad Mini to the desired direction. If the screen is not rotating, check that the Control Center's Orientation Lock button is enabled.

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