272. (kotlin/코틀린) [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 : Kotlin

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[소스 코드]

​

        // -----------------------------------------------------------------------------------------
        // 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(
                    { value ->
                        S_Log.ltw("================================================")
                        S_Log.cnt("[" + ACTIVITY_NAME + " >> WIFI SCAN RESULT :: onNext]")
                        S_Log.cnt("-----------------------------------------")
                        S_Log.cnt("[VALUE :: $value]")
                        S_Log.lbw("================================================")
                    },
                    { error ->
                        S_Log.lte("================================================")
                        S_Log.cnt("[" + ACTIVITY_NAME + " >> WIFI SCAN RESULT :: onError]")
                        S_Log.cnt("-----------------------------------------")
                        S_Log.cnt("[ERROR :: " + error.message.toString() + "]")
                        S_Log.lbe("================================================")
                    }
                )
                {
                }

        }
        catch (e : Exception) {
            e.printStackTrace()
        }
        // */
        // -----------------------------------------------------------------------------------------
        var WIFI_M_LOG = ""
        var WIFI_COUNT = 0
        var WIFI_LIST: List<HashMap<String, Any>>? = null
        fun observableWifiScanList(mContext: Context): Observable<List<ScanResult>> {

            // [로직 처리 실시]
            return Observable.create { subscriber: ObservableEmitter<List<ScanResult>> ->

                // [변수 초기화]
                WIFI_M_LOG = ""
                WIFI_COUNT = 0
                val WIFI_LIST: MutableList<HashMap<String, Any>> = ArrayList()

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

                    Handler(Looper.getMainLooper()).postDelayed({

                        // [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 :: $WIFI_M_LOG]")
                            S_Log.lbe("================================================")

                            // [리턴 반환 실시]
                            subscriber.onError(Throwable(WIFI_M_LOG))
                            subscriber.onComplete()

                        }
                        else {

                            // [와이파이 리스트 스캔 실시]
                            val wifiManager = mContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
                            val scanResultList = wifiManager.scanResults

                            for (result in scanResultList) {
                                val map = HashMap<String, Any>()
                                map["SSID"] = result.SSID
                                map["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 :: $WIFI_COUNT]")
                            S_Log.cnt("-----------------------------------------")
                            S_Log.cnt("[SCAN LIST :: $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 (ex: Exception) {
                                ex.printStackTrace()
                            }
                        }
                    }, 0)

                } catch (e: Exception) {
                    e.printStackTrace()
                    S_Log.lte("================================================")
                    S_Log.cnt("[" + ACTIVITY_NAME + " >> observableWifiScanList :: ERROR]")
                    S_Log.cnt("-----------------------------------------")
                    S_Log.cnt("[EXCEPTION :: " + e.message.toString() + "]")
                    S_Log.lbe("================================================")

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

                        // [리턴 반환 실시]
                        subscriber.onError(Throwable(WIFI_M_LOG))
                        subscriber.onComplete()

                    } catch (ex: Exception) {
                        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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