java – Prevent rotation of Activity and the entire application

Question:

Good afternoon.

How to solve this situation correctly?

There is an android application that depends on one parameter – the display diagonal. This value, or approximate to it, I find – there are no problems. Depending on the display,> 5 "landscape only, <5" portrait only.

 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (ScreenSize<5) {
            setContentView(R.layout.startactivity_p); //отобразить хмл портретный
        }
        else{
            setContentView(R.layout.startactivity_l); // отобразить хмл ландскейп
        }

    }

I wrote the following in each xml-layout:

android:screenOrientation="landscape"
android:orientation="vertical"

and

android:screenOrientation="portrait"
android:orientation="horizontal"

respectively.

But the application still rotates. Tell me how you can fix this?

Answer:

For each of your occasions

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

and

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

Doesn't turn. Actually, here's a good article .