问题
I have an activity that shouldn't be recreated after an orientation change. I added the following to the activity declaration in the manifest:
android:configChanges="orientation"
On Android 2.3 this works perfectly. On HONEYCOMB_MR2 onCreate is called anyway when change the orientation.
Is there something else that needs to be done on HONEYCOMB_MR2 to prevent recreating the activity after an orientation change?
回答1:
Apparently using orientation|screenSize (?) prevents onCreate on Honeycomb and (so far) does not seem to break anything in previous Android versions.
android:configChanges="orientation|screenSize"
No idea why this is necessary and I don't really understand the documentation about this new value.
I suspect that in HONEYCOMB_MR2 upon an orientation change the activity considers this as two config changes: orientation and screen size. And both attempt to recreate the activity by default.
来源：https://stackoverflow.com/questions/6968105/orientation-change-in-honeycomb