锁定屏幕方向 (Android) [英] Lock screen orientation (Android)

问题描述

我正在编写一个 android 应用程序，该应用程序使用具有不同内容(活动)的选项卡.在其中一项活动中，我想将屏幕方向锁定为横向"模式，但在其他活动中，我想要正常方向(根据传感器).

I'm writing an android application that uses tabs with different contents (activities). In one of these activities, I would like to lock the screen orientation to "Landscape"-mode, but in the other activities, I want the normal orientation (according to sensor).

我现在正在做的是打电话

What I'm doing now is that I'm calling

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

当我切换到横向模式活动时，

when I switch to the landscape mode activity, and

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

当我切换回其他活动时.然而，这似乎不起作用，整个应用程序锁定.解决此问题的常规方法是什么?

when I switch back to the other activities. However, this doesn't seem to work, the whole application locks up. What is the normal approach to this problem?

推荐答案

在 Manifest 中，您可以将 screenOrientation 设置为横向.它在 XML 中看起来像这样:

In the Manifest, you can set the screenOrientation to landscape. It would look something like this in the XML:

<activity android:name="MyActivity"
android:screenOrientation="landscape"
android:configChanges="keyboardHidden|orientation|screenSize">
...
</activity>

其中 MyActivity 是您希望保持横向的活动.

Where MyActivity is the one you want to stay in landscape.

android:configChanges=... 行防止 onResume()、onPause() 在屏幕旋转时被调用.如果没有这条线，轮换将按照您的要求保持，但仍会进行调用.

The android:configChanges=... line prevents onResume(), onPause() from being called when the screen is rotated. Without this line, the rotation will stay as you requested but the calls will still be made.

注意:keyboardHidden 和 orientation 是 < 所必需的.Android 3.2(API 级别 13)，并且三个选项都需要 3.2 或更高版本，而不仅仅是orientation.

Note: keyboardHidden and orientation are required for < Android 3.2 (API level 13), and all three options are required 3.2 or above, not just orientation.

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