问题
I have a LinearLayout and on some devices all the views are reversed.
The Good Version:
[b1] [b2] [b3]
On some devices:
[b3] [b2] [b1]
Why does that happen and how can I fix it?
回答1:
If you're targeting and testing on API level >=17 (i.e. Android 4.2) this might be caused by RTL support, as described here.
If you don't want this, you can either change android:layoutDirection for each particular view (and since the default is inherit, the root view should suffice) or you can disable it for the whole application by setting android:supportsRtl="false" in the AndroidManifest.xml file.
Or, you could also target an API level < 17, since it will then be disabled for compatibility (but this would lock you out of certain APIs).
来源：https://stackoverflow.com/questions/24718173/linearlayout-order-is-reversed-on-some-devices