I wrote a cordova plugin, OrientationPlugin for Android that allows to lock the app into portrait or landscape mode for certain screens.

orientationplugin
├── src
│   └── android
│       └── OrientationPlugin.java
├── www
│   └── orientation.js
└── plugin.xml

package net.jsloop.android.orientation;

import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.json.JSONArray;

import android.content.pm.ActivityInfo;
import android.util.Log;

public class OrientationPlugin extends CordovaPlugin {

    private final String pluginName = "OrientationPlugin";
    
    public boolean execute(final String action, final JSONArray data, final CallbackContext callBackContext) {
        Log.d(pluginName, "OrientationPlugin called with options: " + data);
        if (action.equals("portrait")) {
            cordova.getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        } else if (action.equals("landscape")) {
            cordova.getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        } else if (action.equals("both")) {
            cordova.getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
        }
        return true;
    }
}

/* global cordova module */

function exec(success, error, className, methodName, argsArr) {
  cordova.exec(success, error, className, methodName, argsArr);
}

module.exports = {
    portrait: function (name, success, error) {
        exec(success, error, "OrientationPlugin", "portrait", []);
    },
    landscape: function (success, error) {
      exec(success, error, "OrientationPlugin", "landscape", []);
    },
    both: function (success, error) {
        exec(success, error, "OrientationPlugin", "both", []);
    }
};

<?xml version="1.0" encoding="utf-8"?>
<plugin xmlns="http://www.phonegap.com/ns/plugins/1.0"
        id="net.jsloop.android.orientation"
        version="1.0.0">

    <name>OrientationPlugin</name>

    <engines>
        <engine name="cordova" version=">=3.4.0"/>
    </engines>

    <asset src="www/orientation.js" target="orientation.js"/>

    <js-module src="www/orientation.js" name="orientation">
        <clobbers target="orientation" />
    </js-module>

    <platform name="android">
        <config-file target="res/xml/config.xml" parent="/*">
            <feature name="OrientationPlugin">
                <param name="android-package" value="net.jsloop.android.orientation.OrientationPlugin"/>
            </feature>
        </config-file>

        <source-file src="src/android/OrientationPlugin.java" target-dir="src/net/jsloop/android/orientation/"/>
    </platform>
</plugin>