Java Code Examples for android.net.wifi.ScanResult

private List<ScanResult> find80211mcSupportedAccessPoints(
        @NonNull List<ScanResult> originalList) {
    List<ScanResult> newList = new ArrayList<>();

    for (ScanResult scanResult : originalList) {

        if (scanResult.is80211mcResponder()) {
            newList.add(scanResult);
        }

        if (newList.size() >= RangingRequest.getMaxPeers()) {
            break;
        }
    }
    return newList;
}
 

private WiFiNetwork(Parcel in) {
	ssidName = in.readString();
	if (in.readInt() == 1)
		macAddress = in.readString();
	else
		macAddress = "";
	if (in.readInt() == 1)
		encryption = in.readString();
	else
		encryption = OPEN;
	level = in.readInt();
	mode = in.readInt();
	keygens = new ArrayList<>();
	in.readList(keygens, Keygen.class.getClassLoader());
	if (in.readInt() == 1)
		scanResult = in.readParcelable(ScanResult.class.getClassLoader());
	else
		scanResult = null;
}
 

/**
 * 扫描WiFi列表
 */
@RequiresPermission(allOf = {Manifest.permission.CHANGE_WIFI_STATE,
                             Manifest.permission.ACCESS_WIFI_STATE})
public List<ScanResult> getScanResults() {
    List<ScanResult> list = null;
    //开始扫描WiFi
    boolean f = mWifiManager.startScan();
    if (!f) {
        getScanResults();
    } else {
        // 得到扫描结果
        list = mWifiManager.getScanResults();
    }

    return list;
}
 

@Test
public void testAddCompliesToMaxCacheSize() {
    // setup
    int cacheSize = 2;
    when(configuration.isSizeAvailable()).thenReturn(false);
    List<List<ScanResult>> expected = new ArrayList<>();
    // execute
    for (int i = 0; i < cacheSize; i++) {
        List<ScanResult> scanResults = Collections.emptyList();
        expected.add(scanResults);
        fixture.add(scanResults, wifiInfo);
    }
    // validate
    assertEquals(cacheSize, expected.size());
    assertEquals(expected.get(cacheSize - 1), fixture.getFirst());
    assertEquals(expected.get(cacheSize - 2), fixture.getLast());
}
 

/**
 * 过滤扫描结果
 *
 * @param context
 * @param bssid
 * @return
 */
public static ScanResult getScanResultsByBSSID(Context context, String bssid) {
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    ScanResult scanResult = null;
    boolean f = wifiManager.startScan();
    if (!f) {
        getScanResultsByBSSID(context, bssid);
    }
    List<ScanResult> list = wifiManager.getScanResults();
    if (list != null) {
        for (int i = 0; i < list.size(); i++) {
            scanResult = list.get(i);
            if (scanResult.BSSID.equals(bssid)) {
                break;
            }
        }
    }
    return scanResult;
}
 

@ReactMethod
public void list(Callback successCallback, Callback errorCallback) {
  try {
    WifiManager mWifiManager = (WifiManager) getReactApplicationContext().getSystemService(Context.WIFI_SERVICE);
    List < ScanResult > results = mWifiManager.getScanResults();
    WritableArray wifiArray =  Arguments.createArray();
    for (ScanResult result: results) {
      if(!result.SSID.equals("")){
        wifiArray.pushString(result.SSID);
      }
    }
    successCallback.invoke(wifiArray);
  } catch (IllegalViewOperationException e) {
    errorCallback.invoke(e.getMessage());
  }
}
 

/**
 * 扫描 Wifi 信息
 * @param listWifiVos     数据源
 * @param listScanResults 扫描返回的数据
 * @return {@code true} success, {@code false} fail
 */
public static boolean scanWifiVos(final List<WifiVo> listWifiVos, final List<ScanResult> listScanResults) {
    if (listWifiVos == null || listScanResults == null) return false;
    // 清空旧数据
    listWifiVos.clear();
    // 遍历 Wifi 列表数据
    for (int i = 0, len = listScanResults.size(); i < len; i++) {
        // 如果出现异常、或者失败, 则无视当前的索引 Wifi 信息
        try {
            // 获取当前索引的 Wifi 信息
            ScanResult scanResult = listScanResults.get(i);
            // 防止 Wifi 名长度为 0
            if (scanResult.SSID.length() == 0) {
                continue;
            }
            // 保存 Wifi 信息
            listWifiVos.add(createWifiVo(scanResult));
        } catch (Exception e) {
            LogPrintUtils.eTag(TAG, e, "scanWifiVos");
        }
    }
    return true;
}
 

private static void scanSuccess(WifiManager wifiManager, WifiBean wifiBean, long startTime, WifiScanListener wifiScanListener) {
    List<ScanResult> results = wifiManager.getScanResults();
    wifiBean.setWifiScanStatus(results.size() != 0);
    JSONArray scanArray = new JSONArray();
    for (ScanResult scanResult : results) {
        WifiBean.WifiResultBean wifiResultBean = new WifiBean.WifiResultBean();
        wifiResultBean.setBSSID(scanResult.BSSID);
        wifiResultBean.setSSID(scanResult.SSID);
        wifiResultBean.setCapabilities(scanResult.capabilities);
        wifiResultBean.setLevel(scanResult.level);
        scanArray.put(wifiResultBean.toJSONObject());
    }
    wifiBean.setWifiScanResult(scanArray);
    wifiBean.setTime(System.currentTimeMillis() - startTime);
    wifiScanListener.onResult(wifiBean.toJSONObject());

}
 

@SuppressLint("UseValueOf")
public void onReceive(Context c, Intent intent) {
  
	  List<ScanResult> wifiScanList = mainWifiObj.getScanResults();
	  Log.d("wifi-scanning", "received " + wifiScanList.size());
   StreamElement streamElement = null;
   
   if (wifiScanList.size() == 0){
 	  
 	  streamElement = new StreamElement(w.getFieldList(), w.getFieldType(),
			new Serializable[] { 0.0, mainWifiObj.isWifiEnabled()?1.0:0.0 , 0.0 });
       ((WifiWrapper) w).postStreamElement(streamElement);
   }
   
   for(int i = 0; i < wifiScanList.size(); i++){
      	streamElement = new StreamElement(w.getFieldList(), w.getFieldType(),
		new Serializable[] { converTingBSSID(wifiScanList.get(i).BSSID.substring(0, 8)), converTingBSSID(wifiScanList.get(i).BSSID.substring(8)), wifiScanList.get(i).level });
      ((WifiWrapper) w).postStreamElement(streamElement);
      storage.updateWifiFrequency(wifiScanList.get(i).BSSID);
   }
  // unregisterReceiver(wifiReciever);
  // registerReceiver(wifiReciever, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
   scanning = false;
}
 

/**
 * 连接加密wifi
 * @param scanResult
 * @param password
 * @return
 */
@RequiresPermission(Manifest.permission.CHANGE_WIFI_STATE)
public boolean connection(ScanResult scanResult, String password) {
    WifiConfiguration wifiConfiguration = new WifiConfiguration();
    wifiConfiguration.SSID = "\"" + scanResult.SSID + "\"";
    wifiConfiguration.preSharedKey = "\"" + password + "\"";
    wifiConfiguration.hiddenSSID = true;
    wifiConfiguration.status = WifiConfiguration.Status.ENABLED;
    wifiConfiguration.allowedAuthAlgorithms.set(
            WifiConfiguration.AuthAlgorithm.OPEN);
    wifiConfiguration.allowedGroupCiphers.set(
            WifiConfiguration.GroupCipher.TKIP);
    wifiConfiguration.allowedGroupCiphers.set(
            WifiConfiguration.GroupCipher.CCMP);
    wifiConfiguration.allowedKeyManagement.set(
            getEncryptionType(scanResult));
    wifiConfiguration.allowedPairwiseCiphers.set(
            WifiConfiguration.PairwiseCipher.TKIP);
    wifiConfiguration.allowedPairwiseCiphers.set(
            WifiConfiguration.PairwiseCipher.CCMP);
    wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
    return connection(wifiConfiguration);
}
 

public void run() {
	if (mcContext == null) {
		return;
	}
	newDeviceList.clear();
	List<ScanResult> currentWifiScanResult = NetUtils.getCurrentWifiScanResult(mcContext);
	int flog = 0;
	for (ScanResult scanResult : currentWifiScanResult) {
		String ssid = scanResult.SSID;
		// 获取系统的NotificationManager服务
		nm = (NotificationManager) mcContext.getSystemService(Context.NOTIFICATION_SERVICE);
		if (ssid.contains(GosBaseActivity.SoftAP_Start) && ssid.length() > GosBaseActivity.SoftAP_Start.length()
				&& !newDeviceList.toString().contains(ssid)) {
			newDeviceList.add(ssid);
			flog++;
			send(ssid, flog);
		}
	}
	if (mainHandler != null && newDeviceList.size() > 0) {
		mainHandler.sendEmptyMessage(SHOWDIALOG);
	}

	looper.postDelayed(mRunnable, 2000);
}
 

/**
 * 连接加密wifi
 */
@RequiresPermission(Manifest.permission.CHANGE_WIFI_STATE) public boolean connection(
        @NonNull ScanResult scanResult, @NonNull String password) {
    WifiConfiguration wifiConfiguration = new WifiConfiguration();
    wifiConfiguration.SSID = "\"" + scanResult.SSID + "\"";
    wifiConfiguration.preSharedKey = "\"" + password + "\"";
    wifiConfiguration.hiddenSSID = true;
    wifiConfiguration.status = WifiConfiguration.Status.ENABLED;
    wifiConfiguration.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
    wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
    wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
    wifiConfiguration.allowedKeyManagement.set(getEncryptionType(scanResult));
    wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
    wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
    wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
    return connection(wifiConfiguration);
}
 

private void initData() {
	list = new ArrayList<ScanResult>();
	list = (ArrayList<ScanResult>) NetUtils.getCurrentWifiScanResult(GosChooseDeviceActivity.this);
	softList = new ArrayList<ScanResult>();
	ScanResult scanResult;
	for (int i = 0; i < list.size(); i++) {
		scanResult = list.get(i);
		if (scanResult.SSID.length() > SoftAP_Start.length()) {
			if (scanResult.SSID.contains(SoftAP_Start)) {
				softList.add(scanResult);
			}
		}
	}
	myadapter = new Myadapter(softList);
	listView.setAdapter(myadapter);

}
 

public static boolean reEnableNetworkIfPossible(@Nullable final WifiManager wifiManager, @Nullable final ScanResult scanResult) {
    if (wifiManager == null) {
        return false;
    }
    @Nullable
    final List<WifiConfiguration> configurations = wifiManager.getConfiguredNetworks();
    if (configurations == null || scanResult == null || configurations.isEmpty()) {
        return false;
    }
    boolean result = false;
    for (WifiConfiguration wifiConfig : configurations)
        if (Objects.equals(scanResult.BSSID, wifiConfig.BSSID) && Objects.equals(scanResult.SSID, trimQuotes(wifiConfig.SSID))) {
            result = wifiManager.enableNetwork(wifiConfig.networkId, true);
            break;
        }
    wifiLog("reEnableNetworkIfPossible " + result);
    return result;
}
 

@RequiresPermission(allOf = {ACCESS_FINE_LOCATION, ACCESS_WIFI_STATE})
static boolean cleanPreviousConfiguration(@Nullable final WifiManager wifiManager, @NonNull final ScanResult scanResult) {
    if (wifiManager == null) {
        return false;
    }
    //On Android 6.0 (API level 23) and above if my app did not create the configuration in the first place, it can not remove it either.
    final WifiConfiguration config = ConfigSecurities.getWifiConfiguration(wifiManager, scanResult);
    wifiLog("Attempting to remove previous network config...");
    if (config == null) {
        return true;
    }

    if (wifiManager.removeNetwork(config.networkId)) {
        wifiManager.saveConfiguration();
        return true;
    }
    return false;
}
 

@Override
public void onScanResultItemClick(ScanResult scanResult) {
    Log.d(TAG, "onScanResultItemClick(): ssid: " + scanResult.SSID);

    Intent intent = new Intent(this, AccessPointRangingResultsActivity.class);
    intent.putExtra(SCAN_RESULT_EXTRA, scanResult);
    startActivity(intent);
}
 

@ReactMethod
public void findAndConnect(String ssid, String password, Callback ssidFound) {
	List < ScanResult > results = wifi.getScanResults();
	boolean connected = false;
	for (ScanResult result: results) {
		String resultString = "" + result.SSID;
		if (ssid.equals(resultString)) {
			connected = connectTo(result, password, ssid);
		}
	}
	ssidFound.invoke(connected);
}
 

private void a(List<ScanResult> list) {
    if (list != null) {
        if (this.c) {
            if (this.b == null) {
                this.b = new ArrayList();
            }
            int size = this.b.size();
            for (ScanResult scanResult : list) {
                for (int i = 0; i < size; i++) {
                    if (((ScanResult) this.b.get(i)).BSSID.equals(scanResult.BSSID)) {
                        this.b.remove(i);
                        break;
                    }
                }
                this.b.add(scanResult);
            }
            return;
        }
        if (this.b == null) {
            this.b = new ArrayList();
        } else {
            this.b.clear();
        }
        for (ScanResult scanResult2 : list) {
            this.b.add(scanResult2);
        }
    }
}
 

/**
 * Adds all BSSIDs that are currently in range for the specified SSID (prevents nagging)
 * We are assuming the user does not know the BSSID of the AP it wants to trust, anyway, and
 * choose the more useable option.
 * @param SSID the SSID of the network that needs to be allowed at this location
 */
public void addAllowedBSSIDsForLocation(String SSID) {
    List<ScanResult> scanResults = wifiManager.getScanResults();
    for (ScanResult result : scanResults) {
        if (SSID.equals(result.SSID))
            addAllowedBSSID(SSID, result.BSSID);
    }
}
 

@Override
public void onSucceed(int requestCode, List<String> grantPermissions) {
	super.onSucceed(requestCode, grantPermissions);
	AlertDialog.Builder dia = new AlertDialog.Builder(GosChooseDeviceWorkWiFiActivity.this);
	View view = View.inflate(GosChooseDeviceWorkWiFiActivity.this, R.layout.alert_gos_wifi_list, null);
	ListView listview = (ListView) view.findViewById(R.id.wifi_list);
	List<ScanResult> rsList = NetUtils.getCurrentWifiScanResult(this);
	List<String> localList = new ArrayList<String>();
	localList.clear();
	wifiList = new ArrayList<ScanResult>();
	wifiList.clear();
	for (ScanResult sss : rsList) {

		if (sss.SSID.contains(GosConstant.SoftAP_Start)) {
		} else {
			if (localList.toString().contains(sss.SSID)) {
			} else {
				localList.add(sss.SSID);
				wifiList.add(sss);
			}
		}
	}
	WifiListAdapter adapter = new WifiListAdapter(wifiList);
	listview.setAdapter(adapter);
	listview.setOnItemClickListener(this);
	dia.setView(view);
	create = dia.create();
	create.show();

}
 

public static WifiConfiguration getWifiConfiguration(final WifiManager wifiMgr,
                                                        final ScanResult hotsopt, String hotspotSecurity) {
	final String ssid = StringUtils.convertToQuotedString(hotsopt.SSID);
	if(ssid.length() == 0) {
		return null;
	}
	
	final String bssid = hotsopt.BSSID;
	if(bssid == null) {
		return null;
	}
	
	if(hotspotSecurity == null) {
		hotspotSecurity = getScanResultSecurity(hotsopt);
	}
	
	final List<WifiConfiguration> configurations = wifiMgr.getConfiguredNetworks();

	for(final WifiConfiguration config : configurations) {
		if(config.SSID == null || !ssid.equals(config.SSID)) {
			continue;
		}
		if(config.BSSID == null || bssid.equals(config.BSSID)) {
			final String configSecurity = getWifiConfigurationSecurity(config);
			if(hotspotSecurity.equals(configSecurity)) {
				return config;
			}
		}
	}
	return null;
}
 

@Override
public List<ScanResult> get() {
    WifiScanner wifiScanner = mContext.getSystemService(WifiScanner.class);
    if (wifiScanner != null) {
        return wifiScanner.getSingleScanResults();
    }
    Log.w(TAG, "WifiScanner is null, failed to return scan results.");
    return Collections.emptyList();
}
 

static boolean matchesName(@Nullable Pattern namePattern, ScanResult device) {
    boolean result;
    if (namePattern == null)  {
        result = true;
    } else if (device == null) {
        result = false;
    } else {
        final String name = device.SSID;
        result = name != null && namePattern.matcher(name).find();
    }
    if (DEBUG) debugLogMatchResult(result, device, namePattern);
    return result;
}
 

/**
 * Configure a network, and connect to it.
 * @param wifiMgr
 * @param scanResult
 * @param password Password for secure network or is ignored.
 * @return
 */
public static boolean connectToNewNetwork(final WifiManager wifiMgr, final ScanResult scanResult, final String password) {
       //1.获取wifi加密方式（WEP, WPA, WPA2, WPA_EAP, IEEE8021X）
	final String security = getScanResultSecurity(scanResult);
	
	if(security.equals(OPEN)) {
		final int numOpenNetworksKept = 10;
		checkForExcessOpenNetworkAndSave(wifiMgr, numOpenNetworksKept);
	}
	
	WifiConfiguration config = new WifiConfiguration();
	config.SSID = StringUtils.convertToQuotedString(scanResult.SSID);
	config.BSSID = scanResult.BSSID;
	setupSecurity(config, security, password);
	
	int id = wifiMgr.addNetwork(config);
	if(id == -1) {
		return false;
	}
	
	if(!wifiMgr.saveConfiguration()) {
		return false;
	}
	
	config = getWifiConfiguration(wifiMgr, config, security);
	if(config == null) {
		return false;
	}
	
	return connectToConfiguredNetwork(wifiMgr, config, true);
}
 

void add(@NonNull List<ScanResult> scanResults, WifiInfo wifiInfo) {
    int cacheSize = getCacheSize();
    while (cachedScanResults.size() >= cacheSize) {
        cachedScanResults.pollLast();
    }
    cachedScanResults.addFirst(scanResults);
    cachedWifiInfo = wifiInfo;
}
 

/**
 * Checks whether we should allow connection to a given SSID, based on the user's preferences
 * It will also ask the user if it is unknown whether the network should be trusted.
 * @param SSID The SSID of the network that should be checked
 * @param scanResults The networks that are currently available
 * @return TRUSTED or UNTRUSTED, based on the user's preferences, or UNKNOWN if the user didn't
 *          specify anything yet
 */
public AccessPointSafety getNetworkSafety(String SSID, List<ScanResult> scanResults) {
    for (ScanResult scanResult : scanResults) {
        if (scanResult.SSID.equals(SSID)) {
            // Check whether the user wants to filter by MAC address
            if (!prefs.getOnlyConnectToKnownAccessPoints()) { // Any MAC address is fair game
                // Enabling now makes sure that we only want to connect when it is in range
                return AccessPointSafety.TRUSTED;
            } else { // Check access point's MAC address
                // Check if the MAC address is in the list of allowed MAC's for this SSID
                Set<String> allowedBSSIDs = prefs.getAllowedBSSIDs(scanResult.SSID);
                if (allowedBSSIDs.contains(scanResult.BSSID)) {
                    return AccessPointSafety.TRUSTED;
                } else {
                    // Not an allowed BSSID
                    if (prefs.getBlockedBSSIDs(scanResult.SSID).contains(scanResult.BSSID)) {
                        // This SSID was explicitly blocked by the user!
                        Log.w("PrivacyPolice", "Spoofed network for " + scanResult.SSID + " detected! (BSSID is " + scanResult.BSSID + ")");
                        return AccessPointSafety.UNTRUSTED;
                    } else {
                        // We don't know yet whether the user wants to allow this network
                        // Ask the user what needs to be done
                        notificationHandler.askNetworkPermission(scanResult.SSID, scanResult.BSSID);
                        return AccessPointSafety.UNKNOWN;
                    }
                }
            }
        }
    }
    return AccessPointSafety.UNTRUSTED; // Network not in range
}
 

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
    if (position >= wifiNetworks.size()) {
        return;
    }
    final ScanResult result = wifiNetworks.get(position);
    holder.txtSsid.setText(result.SSID);
    holder.txtMcResponder.setText(String.valueOf(result.is80211mcResponder()));
    bind(holder.wifi_network_item, result, clickListener);
}
 

@NonNull
WiFiWidth getWiFiWidth(@NonNull ScanResult scanResult) {
    try {
        return EnumUtils.find(WiFiWidth.class, getFieldValue(scanResult, Fields.channelWidth), WiFiWidth.MHZ_20);
    } catch (Exception e) {
        return WiFiWidth.MHZ_20;
    }
}
 

@Test
public void testAdd() {
    // setup
    when(configuration.isSizeAvailable()).thenReturn(false);
    List<ScanResult> scanResults = Collections.emptyList();
    // execute
    fixture.add(scanResults, wifiInfo);
    // validate
    assertEquals(scanResults, fixture.getFirst());
    assertEquals(wifiInfo, fixture.getWifiInfo());
}
 

@Override
public Object onInvoke(Object originService, Object proxy, Method method, Object[] args) throws InvocationTargetException, IllegalAccessException {
    if (!GpsMockManager.getInstance().isMocking()) {
        return method.invoke(originService, args);
    }
    return new ArrayList<ScanResult>();
}