Blank black screen while shifting between activities android

问题

Hi Guys I have 2 activities, 1 is in Android Native(Extends Activity) and 2 is in LIBGdx extends AndroidApplication.

I go from activity 1 to activity 2 and then come back to activity 1 by pressing the back key, then I come back to activity 2 again. This time activity 2 is black and black in color.

Does it has anything to do with libgdx or its an android issue?

Thanks

回答1:

This sounds like libGdx is losing the openGL context. libgdx will get this back automatically when the app goes out of focus (incoming phone call, user presses home key, etc) and then comes back into focus, but here the app never loses focus--only the activity does--so libgdx doesn't know to restore itself.

Does the user need to go back to the first screen? If not, I would mark the first activity android:noHistory="true" in the manifest. That makes the back button skip the activity, so the app itself will lose focus.

Otherwise, put debug statements in your ApplicationListener's create(), resume(), pause(), and dispose() methods so we can see how that life cycle is playing out.

来源：https://stackoverflow.com/questions/26009621/blank-black-screen-while-shifting-between-activities-android