Code to detect mobile and tablet not working

Question

In my application UI is changed based on mobile or tablet. So I am using 2 classes for mobile and tablet.

It is working fine in emulator. But in real tablet device it is not working it takes mobile device class.

MY code to detecting devices:

public boolean isTablet(Context context) 
{
   boolean xlarge = ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == 4);
   boolean large = ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE);
   return (xlarge || large);    
}

Whats wrong here with my code. I am getting mobile layouts on real device only.

Answer 1

checking what kind of device in Android-development is very inaccurate. Try my code

public static boolean isTabletDevice(Context activityContext) {
    // Verifies if the Generalized Size of the device is XLARGE to be
    // considered a Tablet
    boolean xlarge = ((activityContext.getResources().getConfiguration().screenLayout &
            Configuration.SCREENLAYOUT_SIZE_MASK) ==
            Configuration.SCREENLAYOUT_SIZE_XLARGE);

    // If XLarge, checks if the Generalized Density is at least MDPI
    // (160dpi)
    if (xlarge) {
        DisplayMetrics metrics = new DisplayMetrics();
        Activity activity = (Activity) activityContext;
        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);

        // MDPI=160, DEFAULT=160, DENSITY_HIGH=240, DENSITY_MEDIUM=160,
        // DENSITY_TV=213, DENSITY_XHIGH=320
        if (metrics.densityDpi == DisplayMetrics.DENSITY_DEFAULT
                || metrics.densityDpi == DisplayMetrics.DENSITY_HIGH
                || metrics.densityDpi == DisplayMetrics.DENSITY_MEDIUM
                || metrics.densityDpi == DisplayMetrics.DENSITY_TV
                || metrics.densityDpi == DisplayMetrics.DENSITY_XHIGH) {

            // Yes, this is a tablet!
            return true;
        }
    }

    // No, this is not a tablet!
    return false;
}