Tablet Resolver Activity: In rare instances a Tablet layout may not suffice as components may vary from Phone to Tablet devices

DeviceUtils.java

package uk.co.example.android.util;

import android.content.Context;

public class DeviceUtils {

    /**
     * The minimum width that would classify the device as a tablet.
     */
    private static final int MINIMUM_TABLET_WIDTH_DP = 600;// 720

    /**
     * @param context Android's context
     * @return        Whether the app is should treat the device as a tablet for layout.
     */
    public static boolean isTablet(Context context) {
        int minimumScreenWidthDp = context.getResources().getConfiguration().smallestScreenWidthDp;
        return minimumScreenWidthDp >= MINIMUM_TABLET_WIDTH_DP;
    }

}

HomeActivity.java

package uk.co.example.android.home;

import uk.co.example.android.home.phone.HomeActivity;
import uk.co.example.android.home.tablet.HomeActivity;

/**
 * Resolves Activitites for Phone & Tablet
 */
public class HomeActivity extends TabletResolverActivity {

    protected final Class forTablet() {
        return uk.co.example.android.home.tablet.HomeActivity.class;
    }

    protected final Class forPhone() {
        return uk.co.example.android.home.phone.HomeActivity.class;
    }

}

TabletResolverActivity.java

package uk.co.example.android.base;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;

import uk.co.example.android.dependency.DependencyResolverImpl;
import uk.co.example.android.util.DeviceUtils;

/**
 * Abstract Class; The Shell activity must extend this and 
 * implement the methods 'forTablet()' and 'forPhone()' 
 * returning the correct Activity for each.
 */
public abstract class TabletResolverActivity extends Activity {

    protected abstract Class forTablet();

    protected abstract Class forPhone();

    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        DeviceUtils deviceUtils = DependencyResolverImpl.getInstance().getDeviceUtils();
        Class clazz = deviceUtils.isTablet(this) ? forTablet() : forPhone();
        Intent intent = new Intent(getIntent());
        intent.setComponent(new ComponentName(this, clazz));
        intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
        startActivity(intent);
        finish();
    }

}