Base station and WIFI positioning are perfectly realized in Android
- 2020-06-03 08:19:15
- OfStack
But in fact, as long as you understand the principle of base station /WIFI positioning, it is not difficult to achieve their own base station /WIFI positioning. There are several kinds of base station positioning 1. The first one is to use 3 base stations near the mobile phone for 3-angle positioning. Since the position of each base station is fixed, it takes time for electromagnetic waves to transfer between the 3 base stations to work out the coordinates of the mobile phone. The second is to obtain the information of the nearest base station, including the base station id, location area code, mobile country code, mobile network code and signal strength. Send these data to google's positioning web service, and you will get the current location information with an error of 1 within a few meters to a few hundred meters. The data of signal strength is very important. Many of the errors in the so-called manual positioning methods via base stations and WIFI information on the Internet are mostly due to the excessive errors caused by the absence of signal strength. Aude also made a base station library, specific google search 1.
Now in some large and medium-sized cities, 1 WIFI has been popular, there are private and corporate WIFI, also has its share of China telecom WIFI, by positioning WIFI information, do not need to specify WIFI router on real connection, you just need to detect the presence of WIFI, so when the cell phone use is not GSM formats (because of google base station garage did not save too much CDMA base station), can also use WIFI position, principle and base station positioning 1 sample, You must get the SSID and signal strength of the WIFI router.
Due to some users are WIFI off by default, through open API WIFI hardware and search nearby WIFI router needs a period of time, how to combine the orientation of mobile base stations and WIFI perfect, Android provides one kind of very good mechanism, is Handler and Looper Handler and Looper1 sort is used to transfer data across threads, but when used in single thread, becomes a first in first out the news of the pump. Using this message pump for scheduling, the base station location and WIFI location can be perfectly combined. Here's the code:
CellInfoManager
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.telephony.CellLocation;
import android.telephony.NeighboringCellInfo;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.util.Log;
public class CellInfoManager {
private int asu;
private int bid;
private int cid;
private boolean isCdma;
private boolean isGsm;
private int lac;
private int lat;
private final PhoneStateListener listener;
private int lng;
private int mcc;
private int mnc;
private int nid;
private int sid;
private TelephonyManager tel;
private boolean valid;
private Context context;
public CellInfoManager(Context paramContext) {
this.listener = new CellInfoListener(this);
tel = (TelephonyManager) paramContext.getSystemService(Context.TELEPHONY_SERVICE);
this.tel.listen(this.listener, PhoneStateListener.LISTEN_CELL_LOCATION | PhoneStateListener.LISTEN_SIGNAL_STRENGTH);
context = paramContext;
}
public static int dBm(int i) {
int j;
if (i >= 0 && i <= 31)
j = i * 2 + -113;
else
j = 0;
return j;
}
public int asu() {
return this.asu;
}
public int bid() {
if (!this.valid)
update();
return this.bid;
}
public JSONObject cdmaInfo() {
if (!isCdma()) {
return null;
}
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("bid", bid());
jsonObject.put("sid", sid());
jsonObject.put("nid", nid());
jsonObject.put("lat", lat());
jsonObject.put("lng", lng());
} catch (JSONException ex) {
jsonObject = null;
Log.e("CellInfoManager", ex.getMessage());
}
return jsonObject;
}
public JSONArray cellTowers() {
JSONArray jsonarray = new JSONArray();
int lat;
int mcc;
int mnc;
int aryCell[] = dumpCells();
lat = lac();
mcc = mcc();
mnc = mnc();
if (aryCell == null || aryCell.length < 2) {
aryCell = new int[2];
aryCell[0] = cid;
aryCell[1] = -60;
}
for (int i = 0; i < aryCell.length; i += 2) {
try {
int j2 = dBm(i + 1);
JSONObject jsonobject = new JSONObject();
jsonobject.put("cell_id", aryCell[i]);
jsonobject.put("location_area_code", lat);
jsonobject.put("mobile_country_code", mcc);
jsonobject.put("mobile_network_code", mnc);
jsonobject.put("signal_strength", j2);
jsonobject.put("age", 0);
jsonarray.put(jsonobject);
} catch (Exception ex) {
ex.printStackTrace();
Log.e("CellInfoManager", ex.getMessage());
}
}
if (isCdma())
jsonarray = new JSONArray();
return jsonarray;
}
public int cid() {
if (!this.valid)
update();
return this.cid;
}
public int[] dumpCells() {
int[] aryCells;
if (cid() == 0) {
aryCells = new int[0];
return aryCells;
}
List<NeighboringCellInfo> lsCellInfo = this.tel.getNeighboringCellInfo();
if (lsCellInfo == null || lsCellInfo.size() == 0) {
aryCells = new int[1];
int i = cid();
aryCells[0] = i;
return aryCells;
}
int[] arrayOfInt1 = new int[lsCellInfo.size() * 2 + 2];
int j = 0 + 1;
int k = cid();
arrayOfInt1[0] = k;
int m = j + 1;
int n = asu();
arrayOfInt1[j] = n;
Iterator<NeighboringCellInfo> iter = lsCellInfo.iterator();
while (true) {
if (!iter.hasNext()) {
break;
}
NeighboringCellInfo localNeighboringCellInfo = (NeighboringCellInfo) iter.next();
int i2 = localNeighboringCellInfo.getCid();
if ((i2 <= 0) || (i2 == 65535))
continue;
int i3 = m + 1;
arrayOfInt1[m] = i2;
m = i3 + 1;
int i4 = localNeighboringCellInfo.getRssi();
arrayOfInt1[i3] = i4;
}
int[] arrayOfInt2 = new int[m];
System.arraycopy(arrayOfInt1, 0, arrayOfInt2, 0, m);
aryCells = arrayOfInt2;
return aryCells;
}
public JSONObject gsmInfo() {
if (!isGsm()) {
return null;
}
JSONObject localObject = null;
while (true) {
try {
JSONObject localJSONObject1 = new JSONObject();
String str1 = this.tel.getNetworkOperatorName();
localJSONObject1.put("operator", str1);
String str2 = this.tel.getNetworkOperator();
if ((str2.length() == 5) || (str2.length() == 6)) {
String str3 = str2.substring(0, 3);
String str4 = str2.substring(3, str2.length());
localJSONObject1.put("mcc", str3);
localJSONObject1.put("mnc", str4);
}
localJSONObject1.put("lac", lac());
int[] arrayOfInt = dumpCells();
JSONArray localJSONArray1 = new JSONArray();
int k = 0;
int m = arrayOfInt.length / 2;
while (true) {
if (k >= m) {
localJSONObject1.put("cells", localJSONArray1);
localObject = localJSONObject1;
break;
}
int n = k * 2;
int i1 = arrayOfInt[n];
int i2 = k * 2 + 1;
int i3 = arrayOfInt[i2];
JSONObject localJSONObject7 = new JSONObject();
localJSONObject7.put("cid", i1);
localJSONObject7.put("asu", i3);
localJSONArray1.put(localJSONObject7);
k += 1;
}
} catch (JSONException localJSONException) {
localObject = null;
}
}
}
public boolean isCdma() {
if (!this.valid)
update();
return this.isCdma;
}
public boolean isGsm() {
if (!this.valid)
update();
return this.isGsm;
}
public int lac() {
if (!this.valid)
update();
return this.lac;
}
public int lat() {
if (!this.valid)
update();
return this.lat;
}
public int lng() {
if (!this.valid)
update();
return this.lng;
}
public int mcc() {
if (!this.valid)
update();
return this.mcc;
}
public int mnc() {
if (!this.valid)
update();
return this.mnc;
}
public int nid() {
if (!this.valid)
update();
return this.nid;
}
public float score() {
float f1 = 0f;
int[] aryCells = null;
int i = 0;
float f2 = 0f;
if (isCdma()) {
f2 = 1065353216;
return f2;
}
if (isGsm()) {
f1 = 0.0F;
aryCells = dumpCells();
int j = aryCells.length;
if (i >= j)
f2 = f1;
}
if(i <=0 ) {
return 1065353216;
}
int m = aryCells[i];
for (i = 0; i < m; i++) {
if ((m < 0) || (m > 31))
f1 += 0.5F;
else
f1 += 1.0F;
}
f2 = f1;
return f2;
}
public int sid() {
if (!this.valid)
update();
return this.sid;
}
public void update() {
this.isGsm = false;
this.isCdma = false;
this.cid = 0;
this.lac = 0;
this.mcc = 0;
this.mnc = 0;
CellLocation cellLocation = this.tel.getCellLocation();
int nPhoneType = this.tel.getPhoneType();
if (nPhoneType == 1 && cellLocation instanceof GsmCellLocation) {
this.isGsm = true;
GsmCellLocation gsmCellLocation = (GsmCellLocation) cellLocation;
int nGSMCID = gsmCellLocation.getCid();
if (nGSMCID > 0) {
if (nGSMCID != 65535) {
this.cid = nGSMCID;
this.lac = gsmCellLocation.getLac();
}
}
}
try {
String strNetworkOperator = this.tel.getNetworkOperator();
int nNetworkOperatorLength = strNetworkOperator.length();
if (nNetworkOperatorLength != 5) {
if (nNetworkOperatorLength != 6)
;
} else {
this.mcc = Integer.parseInt(strNetworkOperator.substring(0, 3));
this.mnc = Integer.parseInt(strNetworkOperator.substring(3, nNetworkOperatorLength));
}
if (this.tel.getPhoneType() == 2) {
this.valid = true;
Class<?> clsCellLocation = cellLocation.getClass();
Class<?>[] aryClass = new Class[0];
Method localMethod1 = clsCellLocation.getMethod("getBaseStationId", aryClass);
Method localMethod2 = clsCellLocation.getMethod("getSystemId", aryClass);
Method localMethod3 = clsCellLocation.getMethod("getNetworkId", aryClass);
Object[] aryDummy = new Object[0];
this.bid = ((Integer) localMethod1.invoke(cellLocation, aryDummy)).intValue();
this.sid = ((Integer) localMethod2.invoke(cellLocation, aryDummy)).intValue();
this.nid = ((Integer) localMethod3.invoke(cellLocation, aryDummy)).intValue();
Method localMethod7 = clsCellLocation.getMethod("getBaseStationLatitude", aryClass);
Method localMethod8 = clsCellLocation.getMethod("getBaseStationLongitude", aryClass);
this.lat = ((Integer) localMethod7.invoke(cellLocation, aryDummy)).intValue();
this.lng = ((Integer) localMethod8.invoke(cellLocation, aryDummy)).intValue();
this.isCdma = true;
}
} catch (Exception ex) {
Log.e("CellInfoManager", ex.getMessage());
}
}
class CellInfoListener extends PhoneStateListener {
CellInfoListener(CellInfoManager manager) {
}
public void onCellLocationChanged(CellLocation paramCellLocation) {
CellInfoManager.this.valid = false;
}
public void onSignalStrengthChanged(int paramInt) {
CellInfoManager.this.asu = paramInt;
}
}
}
WifiInfoManager
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONObject;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiManager;
import android.util.Log;
public class WifiInfoManager {
private WifiManager wifiManager;
public WifiInfoManager(Context paramContext) {
this.wifiManager = (WifiManager) paramContext.getSystemService(Context.WIFI_SERVICE);
}
public List<WifiInfo> dump() {
if (!this.wifiManager.isWifiEnabled()) {
return new ArrayList<WifiInfo>();
}
android.net.wifi.WifiInfo wifiConnection = this.wifiManager.getConnectionInfo();
WifiInfo currentWIFI = null;
if (wifiConnection != null) {
String s = wifiConnection.getBSSID();
int i = wifiConnection.getRssi();
String s1 = wifiConnection.getSSID();
currentWIFI = new WifiInfo(s, i, s1);
}
ArrayList<WifiInfo> lsAllWIFI = new ArrayList<WifiInfo>();
if (currentWIFI != null) {
lsAllWIFI.add(currentWIFI);
}
List<ScanResult> lsScanResult = this.wifiManager.getScanResults();
for (ScanResult result : lsScanResult) {
WifiInfo scanWIFI = new WifiInfo(result);
if (!scanWIFI.equals(currentWIFI))
lsAllWIFI.add(scanWIFI);
}
return lsAllWIFI;
}
public boolean isWifiEnabled() {
return this.wifiManager.isWifiEnabled();
}
public JSONArray wifiInfo() {
JSONArray jsonArray = new JSONArray();
for (WifiInfo wifi : dump()) {
JSONObject localJSONObject = wifi.info();
jsonArray.put(localJSONObject);
}
return jsonArray;
}
public WifiManager wifiManager() {
return this.wifiManager;
}
public JSONArray wifiTowers() {
JSONArray jsonArray = new JSONArray();
try {
Iterator<WifiInfo> localObject = dump().iterator();
while (true) {
if (!(localObject).hasNext()) {
return jsonArray;
}
jsonArray.put(localObject.next().wifi_tower());
}
} catch (Exception localException) {
Log.e("location", localException.getMessage());
}
return jsonArray;
}
public class WifiInfo implements Comparable<WifiInfo> {
public int compareTo(WifiInfo wifiinfo) {
int i = wifiinfo.dBm;
int j = dBm;
return i - j;
}
public boolean equals(Object obj) {
boolean flag = false;
if (obj == this) {
flag = true;
return flag;
} else {
if (obj instanceof WifiInfo) {
WifiInfo wifiinfo = (WifiInfo) obj;
int i = wifiinfo.dBm;
int j = dBm;
if (i == j) {
String s = wifiinfo.bssid;
String s1 = bssid;
if (s.equals(s1)) {
flag = true;
return flag;
}
}
flag = false;
} else {
flag = false;
}
}
return flag;
}
public int hashCode() {
int i = dBm;
int j = bssid.hashCode();
return i ^ j;
}
public JSONObject info() {
JSONObject jsonobject = new JSONObject();
try {
String s = bssid;
jsonobject.put("mac", s);
String s1 = ssid;
jsonobject.put("ssid", s1);
int i = dBm;
jsonobject.put("dbm", i);
} catch (Exception ex) {
}
return jsonobject;
}
public JSONObject wifi_tower() {
JSONObject jsonobject = new JSONObject();
try {
String s = bssid;
jsonobject.put("mac_address", s);
int i = dBm;
jsonobject.put("signal_strength", i);
String s1 = ssid;
jsonobject.put("ssid", s1);
jsonobject.put("age", 0);
} catch (Exception ex) {
}
return jsonobject;
}
public final String bssid;
public final int dBm;
public final String ssid;
public WifiInfo(ScanResult scanresult) {
String s = scanresult.BSSID;
bssid = s;
int i = scanresult.level;
dBm = i;
String s1 = scanresult.SSID;
ssid = s1;
}
public WifiInfo(String s, int i, String s1) {
bssid = s;
dBm = i;
ssid = s1;
}
}
}
CellLocationManager
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiManager;
import android.os.Handler;
import android.os.Message;
import android.telephony.CellLocation;
import android.util.Log;
import android.widget.Toast;
import com.google.android.photostream.UserTask;
public abstract class CellLocationManager {
public static int CHECK_INTERVAL = 15000;
public static boolean ENABLE_WIFI = true;
private static boolean IS_DEBUG = false;
private static final int STATE_COLLECTING = 2;
private static final int STATE_IDLE = 0;
private static final int STATE_READY = 1;
private static final int STATE_SENDING = 3;
private static final int MESSAGE_INITIALIZE = 1;
private static final int MESSAGE_COLLECTING_CELL = 2;
private static final int MESSAGE_COLLECTING_WIFI = 5;
private static final int MESSAGE_BEFORE_FINISH = 10;
private int accuracy;
private int bid;
private CellInfoManager cellInfoManager;
private Context context;
private boolean disableWifiAfterScan;
private int[] aryGsmCells;
private double latitude;
private double longitude;
private MyLooper looper;
private boolean paused;
private final BroadcastReceiver receiver;
private long startScanTimestamp;
private int state;
private Task task;
private long timestamp;
private boolean waiting4WifiEnable;
private WifiInfoManager wifiManager;
public CellLocationManager(Context context, CellInfoManager cellinfomanager, WifiInfoManager wifiinfomanager) {
receiver = new CellLocationManagerBroadcastReceiver();
this.context = context.getApplicationContext();
cellInfoManager = cellinfomanager;
wifiManager = wifiinfomanager;
}
private void debug(Object paramObject) {
if (IS_DEBUG) {
System.out.println(paramObject);
String str = String.valueOf(paramObject);
Toast.makeText(this.context, str, Toast.LENGTH_SHORT).show();
}
}
public int accuracy() {
return this.accuracy;
}
public double latitude() {
return this.latitude;
}
public double longitude() {
return this.longitude;
}
public abstract void onLocationChanged();
public void pause() {
if (state > 0 && !paused) {
looper.removeMessages(MESSAGE_BEFORE_FINISH);
paused = true;
}
}
public void requestUpdate() {
if (state != STATE_READY) {
return;
}
boolean bStartScanSuccessful = false;
CellLocation.requestLocationUpdate();
state = STATE_COLLECTING;
looper.sendEmptyMessage(MESSAGE_INITIALIZE);
if (wifiManager.wifiManager().isWifiEnabled()) {
bStartScanSuccessful = wifiManager.wifiManager().startScan();
waiting4WifiEnable = false;
} else {
startScanTimestamp = System.currentTimeMillis();
if (!ENABLE_WIFI || !wifiManager.wifiManager().setWifiEnabled(true)) {
int nDelay = 0;
if (!bStartScanSuccessful)
nDelay = 8000;
looper.sendEmptyMessageDelayed(MESSAGE_COLLECTING_WIFI, nDelay);
debug("CELL UPDATE");
} else {
waiting4WifiEnable = true;
}
}
}
public void resume() {
if (state > 0 && paused) {
paused = false;
looper.removeMessages(MESSAGE_BEFORE_FINISH);
looper.sendEmptyMessage(MESSAGE_BEFORE_FINISH);
}
}
public void start() {
if (state <= STATE_IDLE) {
Log.i("CellLocationManager", "Starting...");
context.registerReceiver(receiver, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
context.registerReceiver(receiver, new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION));
looper = new MyLooper();
state = STATE_READY;
paused = false;
waiting4WifiEnable = false;
disableWifiAfterScan = false;
debug("CELL LOCATION START");
requestUpdate();
}
}
public void stop() {
if (state > STATE_IDLE) {
context.unregisterReceiver(receiver);
debug("CELL LOCATION STOP");
looper = null;
state = STATE_IDLE;
if (disableWifiAfterScan) {
disableWifiAfterScan = false;
wifiManager.wifiManager().setWifiEnabled(false);
}
}
}
public long timestamp() {
return this.timestamp;
}
protected boolean isConnectedWithInternet() {
ConnectivityManager conManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = conManager.getActiveNetworkInfo();
if (networkInfo != null) {
return networkInfo.isAvailable();
}
return false;
}
private class MyLooper extends Handler {
private float fCellScore;
private JSONArray objCellTowersJson;
public void handleMessage(Message paramMessage) {
if(CellLocationManager.this.looper != this)
return;
boolean flag = true;
switch (paramMessage.what) {
default:
break;
case MESSAGE_INITIALIZE:
this.objCellTowersJson = null;
this.fCellScore = 1.401298E-045F;
case MESSAGE_COLLECTING_CELL:
if (CellLocationManager.this.state != CellLocationManager.STATE_COLLECTING)
break;
JSONArray objCellTowers = CellLocationManager.this.cellInfoManager.cellTowers();
float fCellScore = CellLocationManager.this.cellInfoManager.score();
if (objCellTowers != null) {
float fCurrentCellScore = this.fCellScore;
if (fCellScore > fCurrentCellScore) {
this.objCellTowersJson = objCellTowers;
this.fCellScore = fCellScore;
}
}
this.sendEmptyMessageDelayed(MESSAGE_COLLECTING_CELL, 600L);
break;
case MESSAGE_COLLECTING_WIFI:
if (CellLocationManager.this.state != CellLocationManager.STATE_COLLECTING)
break;
this.removeMessages(MESSAGE_COLLECTING_CELL);
this.removeMessages(MESSAGE_BEFORE_FINISH);
// if (CellLocationManager.this.disableWifiAfterScan && CellLocationManager.this.wifiManager.wifiManager().setWifiEnabled(true))
// CellLocationManager.this.disableWifiAfterScan = false;
CellLocationManager.this.state = CellLocationManager.STATE_SENDING;
if (CellLocationManager.this.task != null)
CellLocationManager.this.task.cancel(true);
int[] aryCell = null;
if (CellLocationManager.this.cellInfoManager.isGsm())
aryCell = CellLocationManager.this.cellInfoManager.dumpCells();
int nBid = CellLocationManager.this.cellInfoManager.bid();
CellLocationManager.this.task = new CellLocationManager.Task(aryCell, nBid);
JSONArray[] aryJsonArray = new JSONArray[2];
aryJsonArray[0] = this.objCellTowersJson;
aryJsonArray[1] = CellLocationManager.this.wifiManager.wifiTowers();
if(this.objCellTowersJson != null)
Log.i("CellTownerJSON", this.objCellTowersJson.toString());
if(aryJsonArray[1] != null)
Log.i("WIFITownerJSON", aryJsonArray[1].toString());
CellLocationManager.this.debug("Post json");
CellLocationManager.this.task.execute(aryJsonArray);
break;
case MESSAGE_BEFORE_FINISH:
if (CellLocationManager.this.state != CellLocationManager.STATE_READY || CellLocationManager.this.paused)
break;
// L7
if (CellLocationManager.this.disableWifiAfterScan && CellLocationManager.this.wifiManager.wifiManager().setWifiEnabled(false))
CellLocationManager.this.disableWifiAfterScan = false;
if (!CellLocationManager.this.cellInfoManager.isGsm()) {
// L9
if (CellLocationManager.this.bid == CellLocationManager.this.cellInfoManager.bid()) {
flag = true;
} else {
flag = false;
}
// L14
if (flag) {
requestUpdate();
} else {
this.sendEmptyMessageDelayed(10, CellLocationManager.CHECK_INTERVAL);
}
} else {
// L8
if (CellLocationManager.this.aryGsmCells == null || CellLocationManager.this.aryGsmCells.length == 0) {
// L10
flag = true;
} else {
int[] aryCells = CellLocationManager.this.cellInfoManager.dumpCells();
if (aryCells != null && aryCells.length != 0) {
// L13
int nFirstCellId = CellLocationManager.this.aryGsmCells[0];
if (nFirstCellId == aryCells[0]) {
// L16
int cellLength = CellLocationManager.this.aryGsmCells.length / 2;
List<Integer> arraylist = new ArrayList<Integer>(cellLength);
List<Integer> arraylist1 = new ArrayList<Integer>(aryCells.length / 2);
int nIndex = 0;
int nGSMCellLength = CellLocationManager.this.aryGsmCells.length;
while (nIndex < nGSMCellLength) {
// goto L18
arraylist.add(CellLocationManager.this.aryGsmCells[nIndex]);
nIndex += 2;
}
// goto L17
nIndex = 0;
while (nIndex < aryCells.length) {
// goto L20
arraylist1.add(aryCells[nIndex]);
nIndex += 2;
}
// goto L19
int nCounter = 0;
for(Iterator<Integer> iterator = arraylist.iterator(); iterator.hasNext();) {
// goto L22
if (arraylist1.contains(iterator.next()))
nCounter++;
}
// goto L21
int k4 = arraylist.size() - nCounter;
int l4 = arraylist1.size() - nCounter;
if (k4 + l4 > nCounter)
flag = true;
else
flag = false;
if (flag) {
StringBuilder stringbuilder = new StringBuilder(k4).append(" + ");
stringbuilder.append(l4).append(" > ");
stringbuilder.append(nCounter);
CellLocationManager.this.debug(stringbuilder.toString());
}
break;
} else {
// L15
flag = true;
CellLocationManager.this.debug("PRIMARY CELL CHANGED");
// goto L14
if (flag) {
requestUpdate();
} else {
this.sendEmptyMessageDelayed(MESSAGE_BEFORE_FINISH, CellLocationManager.CHECK_INTERVAL);
}
}
} else {
// L12
flag = true;
// goto L14
if (flag) {
requestUpdate();
} else {
this.sendEmptyMessageDelayed(MESSAGE_BEFORE_FINISH,CellLocationManager.CHECK_INTERVAL);
}
}
}
}
}
}
}
class Task extends UserTask<JSONArray, Void, Void> {
int accuracy;
int bid;
int[] cells;
double lat;
double lng;
long time;
public Task(int[] aryCell, int bid) {
this.time = System.currentTimeMillis();
this.cells = aryCell;
this.bid = bid;
}
public Void doInBackground(JSONArray[] paramArrayOfJSONArray) {
try {
JSONObject jsonObject = new JSONObject();
jsonObject.put("version", "1.1.0");
jsonObject.put("host", "maps.google.com");
jsonObject.put("address_language", "zh_CN");
jsonObject.put("request_address", true);
jsonObject.put("radio_type", "gsm");
jsonObject.put("carrier", "HTC");
JSONArray cellJson = paramArrayOfJSONArray[0];
jsonObject.put("cell_towers", cellJson);
JSONArray wifiJson = paramArrayOfJSONArray[1];
jsonObject.put("wifi_towers", wifiJson);
DefaultHttpClient localDefaultHttpClient = new DefaultHttpClient();
HttpPost localHttpPost = new HttpPost("http://www.google.com/loc/json");
String strJson = jsonObject.toString();
StringEntity objJsonEntity = new StringEntity(strJson);
localHttpPost.setEntity(objJsonEntity);
HttpResponse objResponse = localDefaultHttpClient.execute(localHttpPost);
int nStateCode = objResponse.getStatusLine().getStatusCode();
HttpEntity httpEntity = objResponse.getEntity();
byte[] arrayOfByte = null;
if (nStateCode / 100 == 2)
arrayOfByte = EntityUtils.toByteArray(httpEntity);
httpEntity.consumeContent();
String strResponse = new String(arrayOfByte, "UTF-8");
jsonObject = new JSONObject(strResponse);
this.lat = jsonObject.getJSONObject("location").getDouble("latitude");
this.lng = jsonObject.getJSONObject("location").getDouble("longitude");
this.accuracy = jsonObject.getJSONObject("location").getInt("accuracy");;
} catch (Exception localException) {
return null;
}
return null;
}
public void onPostExecute(Void paramVoid) {
if (CellLocationManager.this.state != CellLocationManager.STATE_SENDING || CellLocationManager.this.task != this)
return;
if ((this.lat != 0.0D) && (this.lng != 0.0D)) {
CellLocationManager.this.timestamp = this.time;
CellLocationManager.this.latitude = this.lat;
CellLocationManager.this.longitude = this.lng;
CellLocationManager.this.accuracy = this.accuracy;
CellLocationManager.this.aryGsmCells = this.cells;
CellLocationManager.this.bid = this.bid;
StringBuilder sb = new StringBuilder("CELL LOCATION DONE: (");
sb.append(this.lat).append(",").append(this.lng).append(")");
CellLocationManager.this.debug(sb.toString());
CellLocationManager.this.state = STATE_READY;
CellLocationManager.this.looper.sendEmptyMessageDelayed(MESSAGE_BEFORE_FINISH, CellLocationManager.CHECK_INTERVAL);
CellLocationManager.this.onLocationChanged();
} else {
CellLocationManager.this.task = null;
CellLocationManager.this.state = CellLocationManager.STATE_READY;
CellLocationManager.this.looper.sendEmptyMessageDelayed(MESSAGE_BEFORE_FINISH, 5000L);
}
}
}
private class CellLocationManagerBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context arg0, Intent intent) {
// access$0 state
// 1 debug
// access$2 loop
// 3 startScanTimestamp
// 4 disableWifiAfterScan
// 5 wifimanager
if (CellLocationManager.this.state != CellLocationManager.STATE_COLLECTING)
return;
String s = intent.getAction();
if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(s)) { // goto _L4; else goto _L3
// _L3:
CellLocationManager.this.debug("WIFI SCAN COMPLETE");
CellLocationManager.this.looper.removeMessages(MESSAGE_COLLECTING_WIFI);
long lInterval = System.currentTimeMillis() - CellLocationManager.this.startScanTimestamp;
if (lInterval > 4000L)
CellLocationManager.this.looper.sendEmptyMessageDelayed(MESSAGE_COLLECTING_WIFI, 4000L);
else
CellLocationManager.this.looper.sendEmptyMessage(MESSAGE_COLLECTING_WIFI);
} else {
// _L4:
if (!CellLocationManager.this.waiting4WifiEnable)
return;
String s1 = intent.getAction();
if (!WifiManager.WIFI_STATE_CHANGED_ACTION.equals(s1))
return;
int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 4);
// _L5:
if (wifiState == WifiManager.WIFI_STATE_ENABLING) {
boolean flag2 = CellLocationManager.this.wifiManager.wifiManager().startScan();
// _L8:
CellLocationManager.this.disableWifiAfterScan = true;
CellLocationManager.this.paused = false;
// int i = flag2 ? 1 : 0;
// int nDelay = i != 0 ? 8000 : 0;
// CellLocationManager.this.looper.sendEmptyMessageDelayed(MESSAGE_COLLECTING_WIFI, nDelay);
CellLocationManager.this.debug("WIFI ENABLED");
}
}
}
}
}
Call method:
CellInfoManager cellManager = new CellInfoManager(this);
WifiInfoManager wifiManager = new WifiInfoManager(this);
CellLocationManager locationManager = new CellLocationManager(this, cellManager, wifiManager) {
@Override
public void onLocationChanged() {
txtAutoNaviInfo.setText(this.latitude() + "-" + this.longitude());
this.stop();
}
};
locationManager.start();
If you want to use GPS positioning at the same time, it is also very simple. You can combine BestLocationListener provided by FourSquare and add the above code to register method:
public void register(LocationManager locationManager, boolean gps, Context context) {
if (DEBUG) Log.d(TAG, "Registering this location listener: " + this.toString());
long updateMinTime = SLOW_LOCATION_UPDATE_MIN_TIME;
long updateMinDistance = SLOW_LOCATION_UPDATE_MIN_DISTANCE;
if (gps) {
updateMinTime = LOCATION_UPDATE_MIN_TIME;
updateMinDistance = LOCATION_UPDATE_MIN_DISTANCE;
}
List<String> providers = locationManager.getProviders(true);
int providersCount = providers.size();
if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) && !locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)){
setChanged();
notifyObservers(null);
}
for (int i = 0; i < providersCount; i++) {
String providerName = providers.get(i);
if (locationManager.isProviderEnabled(providerName)) {
updateLocation(locationManager.getLastKnownLocation(providerName));
}
// Only register with GPS if we've explicitly allowed it.
if (gps || !LocationManager.GPS_PROVIDER.equals(providerName)) {
locationManager.requestLocationUpdates(providerName, updateMinTime,
updateMinDistance, this);
}
}
if(cellLocationManager == null) {
CellInfoManager cellManager = new CellInfoManager(context);
WifiInfoManager wifiManager = new WifiInfoManager(context);
cellLocationManager = new CellLocationManager(context, cellManager, wifiManager) {
@Override
public void onLocationChanged() {
if ((latitude() == 0.0D) || (longitude() == 0.0D)) return;
Location result = new Location("CellLocationManager");
result.setLatitude(latitude());
result.setLongitude(longitude());
result.setAccuracy(accuracy());
onBestLocationChanged(result);
this.stop();
}
};
}
//cellLocationManager.stop();
cellLocationManager.start();
// LocationController controller = LocationController.requestLocationUpdates("", updateMinTime,updateMinDistance, this, context);
// controller.requestCurrentLocation();
}