Examples with ScanResult android.net.wifi.ScanResult used on opensource projects

Example 86 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by DirtyUnicorns.

the class ConnectionUtil method connectToWifiWithConfiguration.

/**
     * Connect to Wi-Fi with the given configuration.
     * @param config
     * @return true if we are connected to a given AP.
     */
public boolean connectToWifiWithConfiguration(WifiConfiguration config) {
    //  The SSID in the configuration is a pure string, need to convert it to a quoted string.
    String ssid = config.SSID;
    config.SSID = convertToQuotedString(ssid);
    // If wifi is not enabled, enable it
    if (!mWifiManager.isWifiEnabled()) {
        Log.v(LOG_TAG, "Wifi is not enabled, enable it");
        mWifiManager.setWifiEnabled(true);
        // wait for the wifi state change before start scanning.
        if (!waitForWifiState(WifiManager.WIFI_STATE_ENABLED, 2 * SHORT_TIMEOUT)) {
            Log.v(LOG_TAG, "Wait for WIFI_STATE_ENABLED failed");
            return false;
        }
    }
    boolean foundApInScanResults = false;
    for (int retry = 0; retry < 5; retry++) {
        List<ScanResult> netList = mWifiManager.getScanResults();
        if (netList != null) {
            Log.v(LOG_TAG, "size of scan result list: " + netList.size());
            for (int i = 0; i < netList.size(); i++) {
                ScanResult sr = netList.get(i);
                if (sr.SSID.equals(ssid)) {
                    Log.v(LOG_TAG, "Found " + ssid + " in the scan result list.");
                    Log.v(LOG_TAG, "Retry: " + retry);
                    foundApInScanResults = true;
                    mWifiManager.connect(config, new WifiManager.ActionListener() {

                        public void onSuccess() {
                        }

                        public void onFailure(int reason) {
                            Log.e(LOG_TAG, "connect failed " + reason);
                        }
                    });
                    break;
                }
            }
        }
        if (foundApInScanResults) {
            return true;
        } else {
            // Start an active scan
            mWifiManager.startScan();
            mScanResultIsAvailable = false;
            long startTime = System.currentTimeMillis();
            while (!mScanResultIsAvailable) {
                if ((System.currentTimeMillis() - startTime) > WIFI_SCAN_TIMEOUT) {
                    Log.v(LOG_TAG, "wait for scan results timeout");
                    return false;
                }
                // wait for the scan results to be available
                synchronized (this) {
                    // wait for the scan result to be available
                    try {
                        this.wait(WAIT_FOR_SCAN_RESULT);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    if ((mWifiManager.getScanResults() == null) || (mWifiManager.getScanResults().size() <= 0)) {
                        continue;
                    }
                    mScanResultIsAvailable = true;
                }
            }
        }
    }
    return false;
}

Example 87 with ScanResult

use of android.net.wifi.ScanResult in project dobby-android by InceptAi.

the class WifiState method updateWithScanResult.

private void updateWithScanResult(List<ScanResult> scanResultList) {
    for (ScanResult scanResult : scanResultList) {
        //Update the channel info stuff
        ChannelInfo channelInfo = channelInfoMap.get(scanResult.frequency);
        if (channelInfo == null) {
            channelInfo = new ChannelInfo(scanResult.frequency);
            channelInfoMap.put(scanResult.frequency, channelInfo);
        }
        channelInfo.numberAPs++;
        if (isAPStrong(scanResult.level)) {
            channelInfo.highestStrengthAps++;
        }
        channelInfo.contentionMetric = (channelInfo.contentionMetric * MOVING_AVERAGE_DECAY_FACTOR + computeContention(scanResult) * (100 - MOVING_AVERAGE_DECAY_FACTOR)) / 100;
        //Update the snr stuff
        String keyForSignalUpdating = scanResult.frequency + "-" + scanResult.BSSID;
        Integer signal = movingSignalAverage.get(keyForSignalUpdating);
        Long timestamp = lastSeenSignalTimestamp.get(keyForSignalUpdating);
        if (signal == null) {
            movingSignalAverage.put(keyForSignalUpdating, scanResult.level);
            lastSeenSignalTimestamp.put(keyForSignalUpdating, System.currentTimeMillis());
        } else {
            long currentTimestamp = System.currentTimeMillis();
            signal = Utils.computeMovingAverageSignal(scanResult.level, signal, currentTimestamp, timestamp, MAX_AGE_FOR_SIGNAL_UPDATING_MS);
            movingSignalAverage.put(keyForSignalUpdating, signal);
            lastSeenSignalTimestamp.put(keyForSignalUpdating, currentTimestamp);
        }
    }
}

Example 88 with ScanResult

use of android.net.wifi.ScanResult in project dobby-android by InceptAi.

the class FakeWifiAnalyzer method getFakeScanResultForMainAP.

private ScanResult getFakeScanResultForMainAP() {
    String ssid = FAKE_WIFI_SCAN_CONFIG.mainApSSID;
    int level = getLevel(FAKE_WIFI_SCAN_CONFIG.signalZoneMainAp);
    int channelFreq = CHAN_1_FREQ;
    switch(FAKE_WIFI_SCAN_CONFIG.mainApChannelNumber) {
        case 1:
            channelFreq = CHAN_1_FREQ;
            break;
        case 6:
            channelFreq = CHAN_6_FREQ;
            break;
        case 11:
            channelFreq = CHAN_11_FREQ;
            break;
    }
    ScanResult result = null;
    try {
        result = ScanResult.class.newInstance();
        result.BSSID = ssid;
        result.SSID = ssid;
        result.level = level;
        result.frequency = channelFreq;
        result.centerFreq0 = channelFreq;
        result.centerFreq1 = channelFreq;
        result.channelWidth = ScanResult.CHANNEL_WIDTH_20MHZ;
    } catch (InstantiationException e) {
    } catch (IllegalAccessException e) {
        DobbyLog.e("Unable to generate fake ScanResult");
    }
    return result;
}

Example 89 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by crdroidandroid.

the class AccessPointTest method testOnLevelChanged.

public void testOnLevelChanged() {
    ScanResult result = new ScanResult();
    result.capabilities = "";
    result.SSID = TEST_SSID;
    // Give it a level.
    result.level = WifiTrackerTest.levelToRssi(1);
    mAccessPoint.update(result);
    verifyOnLevelChangedCallback(1);
    // Give it a better level.
    result.level = WifiTrackerTest.levelToRssi(2);
    mAccessPoint.update(result);
    verifyOnLevelChangedCallback(1);
}

Example 90 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by crdroidandroid.

the class WifiTracker method updateAccessPoints.

private void updateAccessPoints() {
    // Swap the current access points into a cached list.
    List<AccessPoint> cachedAccessPoints = getAccessPoints();
    ArrayList<AccessPoint> accessPoints = new ArrayList<>();
    // Clear out the configs so we don't think something is saved when it isn't.
    for (AccessPoint accessPoint : cachedAccessPoints) {
        accessPoint.clearConfig();
    }
    /** Lookup table to more quickly update AccessPoints by only considering objects with the
         * correct SSID.  Maps SSID -> List of AccessPoints with the given SSID.  */
    Multimap<String, AccessPoint> apMap = new Multimap<String, AccessPoint>();
    WifiConfiguration connectionConfig = null;
    if (mLastInfo != null) {
        connectionConfig = getWifiConfigurationForNetworkId(mLastInfo.getNetworkId());
    }
    final Collection<ScanResult> results = fetchScanResults();
    final List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks();
    if (configs != null) {
        mSavedNetworksExist = configs.size() != 0;
        for (WifiConfiguration config : configs) {
            if (config.selfAdded && config.numAssociation == 0) {
                continue;
            }
            AccessPoint accessPoint = getCachedOrCreate(config, cachedAccessPoints);
            accessPoint.update(connectionConfig, mLastInfo, mLastNetworkInfo);
            if (mIncludeSaved) {
                // If saved network not present in scan result then set its Rssi to MAX_VALUE
                boolean apFound = false;
                for (ScanResult result : results) {
                    if (result.SSID.equals(accessPoint.getSsidStr())) {
                        apFound = true;
                        break;
                    }
                }
                if (!apFound) {
                    accessPoint.setRssi(Integer.MAX_VALUE);
                }
                accessPoints.add(accessPoint);
                apMap.put(accessPoint.getSsidStr(), accessPoint);
            } else {
                // If we aren't using saved networks, drop them into the cache so that
                // we have access to their saved info.
                cachedAccessPoints.add(accessPoint);
            }
        }
    }
    if (results != null) {
        for (ScanResult result : results) {
            // Ignore hidden and ad-hoc networks.
            if (result.SSID == null || result.SSID.length() == 0 || result.capabilities.contains("[IBSS]")) {
                continue;
            }
            boolean found = false;
            for (AccessPoint accessPoint : apMap.getAll(result.SSID)) {
                if (accessPoint.update(result)) {
                    found = true;
                    break;
                }
            }
            if (!found && mIncludeScans) {
                AccessPoint accessPoint = getCachedOrCreate(result, cachedAccessPoints);
                if (mLastInfo != null && mLastNetworkInfo != null) {
                    accessPoint.update(connectionConfig, mLastInfo, mLastNetworkInfo);
                }
                if (result.isPasspointNetwork()) {
                    // name).
                    try {
                        WifiConfiguration config = mWifiManager.getMatchingWifiConfig(result);
                        if (config != null) {
                            accessPoint.update(config);
                        }
                    } catch (UnsupportedOperationException e) {
                    // Passpoint not supported on the device.
                    }
                }
                accessPoints.add(accessPoint);
                apMap.put(accessPoint.getSsidStr(), accessPoint);
            }
        }
    }
    // Pre-sort accessPoints to speed preference insertion
    Collections.sort(accessPoints);
    // Log accesspoints that were deleted
    if (DBG)
        Log.d(TAG, "------ Dumping SSIDs that were not seen on this scan ------");
    for (AccessPoint prevAccessPoint : mAccessPoints) {
        if (prevAccessPoint.getSsid() == null)
            continue;
        String prevSsid = prevAccessPoint.getSsidStr();
        boolean found = false;
        for (AccessPoint newAccessPoint : accessPoints) {
            if (newAccessPoint.getSsid() != null && newAccessPoint.getSsid().equals(prevSsid)) {
                found = true;
                break;
            }
        }
        if (!found)
            if (DBG)
                Log.d(TAG, "Did not find " + prevSsid + " in this scan");
    }
    if (DBG)
        Log.d(TAG, "---- Done dumping SSIDs that were not seen on this scan ----");
    mAccessPoints = accessPoints;
    mMainHandler.sendEmptyMessage(MainHandler.MSG_ACCESS_POINT_CHANGED);
}