Why getApplicationContext().setTheme() in a Activity does not work?

Question

i am currently have a hard time for calling to getApplicationContext().setTheme() in a activity, I just want to apply a theme resource in a application scope in

Answer 1

you can use setTheme(..) before calling setContentView(...) and super.oncreate() and it should work fine

It's fixed in sdk 4.0 (may be earlier).

Answer 2

When do you call setTheme() on your application context? It must be called before instantiating any views.

Answer 3

you can use setTheme(..) before calling setContentView(...)and super.oncreate() and it should work fine

Answer 4

I had the same problem before and didn't find a way to fix this. Only god knows why, but I've even seen Android framework engineers (I believe it was Dianne Hackborn) say that setting themes like this is discouraged.

Set the theme for your Activity in the Manifest instead, and it will work.

Answer 5

I didn't try this out myself, but if it was absolutely necessary to set the theme programatically, the next thing I'd try would be to derive a class from Application and override the onCreate method like in the following:

public class MyApplication extends android.app.Application {
    @Override
    public void onCreate() {
        super.onCreate();
        setTheme(android.R.style.Theme_Black_NoTitleBar_Fullscreen);

    }
}