Android: Getting orientation (landscape/portrait) on Activity launch

My Activity needs to monitor the orientation of the device. Now this works great with onConfigurationChanged(), but I also need to know orientation when my Activity starts.

开发者_如何学GoSo how do find out the current orientation of the device in my onCreate(), for instance?

I'm no expert but this works for me, in onCreate():

int display_mode = getResources().getConfiguration().orientation;

if (display_mode == Configuration.ORIENTATION_PORTRAIT) {
    setContentView(R.layout.main);
} else {
    setContentView(R.layout.main_land);
}