锁定屏幕方向不是永久的（android：screenOrientation =“纵向”）

Question

Let's say Activity A has portrait set in manifest, and Activity B has unspecified in manifest. It seems that once I used setRequestedOrientation in Activity B, then popping the back stack to Activity A has activity A in landscape. Is this expected behavior? Does that mean that setRequestedOrientation would possibly change behavior of what's specified in AndroidManifest?

Answer 1

If you're manually modifying the orientation using setRequestedOrientation in Activity B, I think you need to manually handle the orientation in Activity A.

You can force an activity to always be one orientation by putting:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

Right above your setContentView call.

Answer 2

As answerd before you should use

setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

If you want all your activities to be, let's say, Portrait, create an abstract Base Activity and extend it in all your activities