I am pressing Home button or Power button while game playing, and Unity is succesfully calling OnApplicationPause().
I am exporting my game as an eclipse project (applying facebook integration there … )
and export apk from eclipse.
Now I tried the home button, it is working as the original unity built,
but as I press the power button, and turn on the mobile again, the app doesn’t load, it crashes.
While when building from unity, it returned to the app.
It seems that while being an eclipse project, the power button is not calling OnAllplicationPause().
I already experienced this on my own projects. The problem come from your AndroidManifest.
Each activity declared in your Manifest got a android:configChanges attribute which contains many entry.
You should verify that in these entry you got a the value ‘screenSize’.
Then, find the tag ‘uses-sdk’ and verify that the android:targetSdkVersion is at least 14 to support the screenSize value.
It should fix your crash problem.
In fact, Android is resizing the screen each time you are turning the screen on and off and with Android 4.0 and more, if the attribute screenSize is not declared for your activity in the AndroidManifest, Unity will crash on screen resize.
The best way to create your manifest for your Eclipse project is to always copy the one genereated by Unity and adding changes from plugins into this one (Unity always generate an AndroidManifest matching any Android specific requirements).