Android 8.1屏幕方向问题：翻转以横竖屏 [英] Android 8.1 screen orientation issue: flipping to landscape a portrait screen

问题描述

我以肖像模式进行所有活动，但我用来播放始终为横向的视频的活动除外。我发现，每次打开并关闭视频活动时，在Android 8.1上，即使清单上的活动设置为人像，上一个活动也会变为横向。

I have all activities in portrait mode except the one that I use to play a video that is always landscape. I found that on Android 8.1 every time I open the video activity and close it the previous activity go to landscape even it's set to "portrait" on the manifest.

1. 有时候去肖像，然后去风景，并保持风景。


2. 有时去肖像，然后去风景到风景，最后再次画像。

只有在从某个活动恢复为风景后，才会发生这种情况。

This is only happening when a go back from a activity that it's landscape.

有人在经历吗？

谢谢。

编辑

我在Google上报告了该错误： https://issuetracker.google.com/issues/69168442

I report the bug on Google: https://issuetracker.google.com/issues/69168442

编辑2

在Android 9上似乎已修复

It seems fixed on Android 9

推荐答案

只是在我自己的应用中遇到了这个问题。

Just came across this problem in my own app.

适用于我的解决方案如下：

The solution that works for me is as follows:

onCreate(){
   setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
}

onPause(){ 
  if (android.os.Build.VERSION.SDK_INT >= 27) {
         setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);
  }
}

onResume(){
  if (android.os.Build.VERSION.SDK_INT >= 27) {
         setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
  }
}

上面的代码应该在以下活动中横向模式（即第二个活动，以及您从中按下后退按钮的活动）

The above code should go in the activity that is in landscape mode (i.e. the second activity, and the one you press the back button from)

我想指出的是，该解决方案不是我自己的，我有从以下链接的20号帖子中获取了此信息（在OP中也已注明）：

I would like to point out that this solution was not my own, and I have taken it from the #20 post at the following link (which is also noted in the OP):

https://issuetracker.google.com/issues/69168442

我只是觉得这可能会更简单供人们访问，而不必搜索其他页面。

I just thought it might be easier for people to access if they don't have to search another page for it.

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