Set Diffrent Screen Size Layout Dynamically In Android

1] Write Code In MainActivity.java File:

package com.example.screensize;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        DisplayMetrics metrics=new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
        float dp_w=(metrics.widthPixels*160)/metrics.xdpi;
        float dp_h=(metrics.heightPixels*160)/metrics.ydpi;
        TextView tv=(TextView)findViewById(R.id.tv_screen);
        tv.setText(Float.toString((int)dp_w)+"dp x"+Float.toString((int)dp_h)+"dp");
    }
}

2] Create Diffrent Folder In res Folder:

    

Also Create xml File In res Folder.

Output:

 Download Source Code: ScreenSizeDemo