Android 判断当前设备是手机还是平板

/**
 * 判断当前设备是手机还是平板，代码来自 Google I/O App for Android
 * @param context
 * @return 平板返回 True，手机返回 False
 */
public static boolean isPad(Context context) {
    return (context.getResources().getConfiguration().screenLayout
            & Configuration.SCREENLAYOUT_SIZE_MASK) 
            >= Configuration.SCREENLAYOUT_SIZE_LARGE;
}

public static boolean isPad(Activity activity) {
    TelephonyManager telephony = (TelephonyManager)activity.getSystemService(Context.TELEPHONY_SERVICE);
    if (telephony.getPhoneType() == TelephonyManager.PHONE_TYPE_NONE) {
        return true;
    }else {
        return false;
    }
}