Question

Is there a standard way in Java to find out which Android devices (like tablet or phone) my application will run on?

Answer 1

here is the code:

public static boolean isHoneycomb() {
            // Can use static final constants like HONEYCOMB, declared in later versions
            // of the OS since they are inlined at compile time. This is guaranteed behavior.
            return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
        }

public static boolean isTablet(Context context) {
    return (context.getResources().getConfiguration().screenLayout
            & Configuration.SCREENLAYOUT_SIZE_MASK)
            >= Configuration.SCREENLAYOUT_SIZE_LARGE;
}

public static boolean isHoneycombTablet(Context context) {
    return isHoneycomb() && isTablet(context);
}

or you can set the suppurted screens in the AndroidManifest.xml:

    <manifest ... >
    <supports-screens android:xlargeScreens="true" />
    ...
    </manifest>

Visit the Google IO 2011 offical source code here if you want to more details.

I hope it help!