android 如何判断是不是平板

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

public boolean isTabletDevice() {
        TelephonyManager telephony = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
        int type = telephony.getPhoneType();
        if (type == TelephonyManager.PHONE_TYPE_NONE) {
            Log.i("is Tablet!");
        } else {
            Log.i("is phone!");
        }
        return false;
    }