551. (Android/Java) [유틸 파일] observableWifiScanList : Wifi 와이파이 스캔 리스트 목록 결과 반환

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[개발 환경 설정]

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개발 툴 : AndroidStudio

개발 언어 : Java

 

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[소스 코드]

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    // -----------------------------------------------------------------------------------------
    // TODO [SEARCH FAST] : [Observable] : [Wifi 스캔 리스트 목록 결과 반환]
    // -----------------------------------------------------------------------------------------
    // TODO [호출 방법 소스 코드]
    // -----------------------------------------------------------------------------------------
    /*
    try {

        C_App.observableWifiScanList(A_Intro.this)
                .subscribeOn(AndroidSchedulers.mainThread()) // [Observable (생성자) 로직을 IO 스레드에서 실행 : 백그라운드]
                .observeOn(Schedulers.io()) // [Observer (관찰자) 로직을 메인 스레드에서 실행]
                .subscribe(new Observer<List<ScanResult>>() { // [Observable.create 타입 지정]
                    @Override
                    public void onSubscribe(@NonNull Disposable d) {
                    }
                    @Override
                    public void onNext(@NonNull List<ScanResult> value) {
                        S_Log.ltw("================================================");
                        S_Log.cnt("["+ACTIVITY_NAME+" >> WIFI SCAN RESULT :: onNext]");
                        S_Log.cnt("-----------------------------------------");
                        S_Log.cnt("[SCAN COUNT :: "+String.valueOf(value.size())+"]");
                        S_Log.cnt("-----------------------------------------");
                        S_Log.cnt("[SCAN LIST :: "+String.valueOf(value.toString())+"]");
                        S_Log.lbw("================================================");
                    }
                    @Override
                    public void onError(@NonNull Throwable e) {
                        S_Log.lte("================================================");
                        S_Log.cnt("["+ACTIVITY_NAME+" >> WIFI SCAN RESULT :: onError]");
                        S_Log.cnt("-----------------------------------------");
                        S_Log.cnt("[ERROR :: "+String.valueOf(e.getMessage())+"]");
                        S_Log.lbe("================================================");
                    }
                    @Override
                    public void onComplete() {
                    }
                });

    } catch (Exception e) {
        e.printStackTrace();
    }
    */
    // -----------------------------------------------------------------------------------------
    static String WIFI_M_LOG = "";
    static int WIFI_COUNT = 0;
    static List<HashMap<String, Object>> WIFI_LIST = null;
    public static Observable<List<ScanResult>> observableWifiScanList(Context mContext){

        // [로직 처리 실시]
        return Observable.create(subscriber -> {

            // [변수 초기화]
            WIFI_M_LOG = "";
            WIFI_COUNT = 0;
            List<HashMap<String, Object>> WIFI_LIST = new ArrayList<>();

            try {
                S_Log.ltd("================================================");
                S_Log.cnt("["+ACTIVITY_NAME+" >> observableWifiScanList :: 와이파이 리스트 스캔 시작]");
                S_Log.lbd("================================================");

                new Handler(Looper.getMainLooper()).postDelayed(new Runnable() {
                    @Override
                    public void run() {

                        // [퍼미션 권한 체크 실시]
                        if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED
                                || ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                                || ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_WIFI_STATE) != PackageManager.PERMISSION_GRANTED
                                || ActivityCompat.checkSelfPermission(mContext, Manifest.permission.CHANGE_WIFI_STATE) != PackageManager.PERMISSION_GRANTED
                                || ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_NETWORK_STATE) != PackageManager.PERMISSION_GRANTED) {

                            // [퍼미션이 부여되어있지 않은 경우 종료]
                            WIFI_M_LOG = "[ERROR] : [observableWifiScanList] : Wifi Scan Permission not Granted (와이파이 스캔에 필요한 권한을 확인해주세요. : GPS , Location)";

                            S_Log.lte("================================================");
                            S_Log.cnt("["+ACTIVITY_NAME+" >> observableWifiScanList :: ERROR]");
                            S_Log.cnt("-----------------------------------------");
                            S_Log.cnt("[MESSAGE :: "+String.valueOf(WIFI_M_LOG)+"]");
                            S_Log.lbe("================================================");

                            // [리턴 반환 실시]
                            subscriber.onError(new Throwable(WIFI_M_LOG));
                            subscriber.onComplete();
                        }
                        else {

                            // [와이파이 리스트 스캔 실시]
                            WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
                            List<ScanResult> scanResultList = wifiManager.getScanResults();

                            for (ScanResult result : scanResultList) {

                                HashMap<String, Object> map = new HashMap<>();
                                map.put("SSID", result.SSID);
                                map.put("BSSID", result.BSSID);
                                //map.put("capabilities", result.capabilities);

                                WIFI_LIST.add(map);

                            }
                            WIFI_COUNT = WIFI_LIST.size();


                            // [로그 출력]
                            S_Log.ltw("================================================");
                            S_Log.cnt("["+ACTIVITY_NAME+" >> observableWifiScanList :: SUCCESS]");
                            S_Log.cnt("-----------------------------------------");
                            S_Log.cnt("[SCAN COUNT :: "+String.valueOf(WIFI_COUNT)+"]");
                            S_Log.cnt("-----------------------------------------");
                            S_Log.cnt("[SCAN LIST :: "+String.valueOf(WIFI_LIST)+"]");
                            S_Log.lbw("================================================");


                            // ------------------------------------------------------
                            // TODO [리턴 데이터 반환]
                            // ------------------------------------------------------
                            try {
                                // [메시지 삽입]
                                WIFI_M_LOG = "SUCCESS";

                                // [리턴 반환 실시]
                                subscriber.onNext(scanResultList);
                                subscriber.onComplete();
                            }
                            catch (Exception ex){
                                ex.printStackTrace();
                            }

                        }

                    }
                }, 0);

            } catch (final Exception e){
                e.printStackTrace();
                S_Log.lte("================================================");
                S_Log.cnt("["+ACTIVITY_NAME+" >> observableWifiScanList :: ERROR]");
                S_Log.cnt("-----------------------------------------");
                S_Log.cnt("[EXCEPTION :: "+String.valueOf(e.getMessage())+"]");
                S_Log.lbe("================================================");

                // ------------------------------------------------------
                // TODO [리턴 데이터 반환]
                // ------------------------------------------------------
                try {
                    // [에러 메시지 삽입]
                    WIFI_M_LOG = "[EXCEPTION] : [observableWifiScanList] : " + String.valueOf(e.getMessage());

                    // [리턴 반환 실시]
                    subscriber.onError(new Throwable(WIFI_M_LOG));
                    subscriber.onComplete();
                }
                catch (Exception ex){
                    ex.printStackTrace();
                }
            }

        });
    }

 

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[결과 출력]

 

W///===========//: ================================================
I/: [C_App >> observableWifiScanList :: SUCCESS]
I/: -----------------------------------------
I/: [SCAN COUNT :: 43]
I/: -----------------------------------------
I/: [SCAN LIST :: [{BSSID=08:5d:dd:65:74:90, SSID=olleh_GiGA_WiFi_748D} ... ]]
W///===========//: ================================================

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