Android Enabled/Disabled Fix Portrait or Landscape Orientation Mode

package com.myapp;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        final TextView result = (TextView) findViewById(R.id.txtResult);
        
        int mode = getResources().getConfiguration().orientation;

        if (mode == 1) {
        	result.setText("Current Portrait");
        } else {
        	result.setText("Current Landscape");
        } 
        
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main"
            android:screenOrientation="portrait" >