Android里实现基站和WIFI定位
大部分国产的Android定制机里不支持最简单实用的基站和WIFI定位,只能使用速度慢而耗电的GPS定位,但OPhone和华为/中兴生产的一些Android定制机却占据了一定的市场,因此导致了很多使用了定位技术的Andorid应用挺尴尬的。
不过其实只要明白了基站/WIFI定位的原理,自己实现基站/WIFI定位其实不难。基站定位一般有几种,第一种是利用手机附近的三个基站进行三角定位, 由于每个基站的位置是固定的,利用电磁波在这三个基站间中转所需要时间来算出手机所在的坐标;第二种则是利用获取最近的基站的信息,其中包括基站 id,location area code、mobile country code、mobile network code和信号强度,将这些数据发送到google的定位web服务里,就能拿到当前所在的位置信息,误差一般在几十米到几百米之内。其中信号强度这个数 据很重要,网上很多所谓的手动通过基站和WIFI信息定位的方法误差大都是因为没使用信号强度而导致误差过大。高德也自己做了一个基站库,具体可以 google搜索一下。
现在在一些大中型城市里,WIFI已经普及,有私人或企业的WIFI,亦有中国电信的WIFI,通过WIFI信息进行定位,并不需要真正连接上指定的 WIFI路由器,只需要探测到有WIFI存在即可,因此当手机使用的不是GSM制式(因为google的基站库里并没在保存太多的CDMA基站)的时候, 也可以使用WIFI进行定位,原理也和基站定位一样,必须要拿到WIFI路由器的SSID和信号强度。
由于有些用户默认是将WIFI关闭的,通过API开启WIFI硬件并进行搜索附近的WIFI路由器需要一段时间,怎样才能将手机基站定位和WIFI定位完 美结合起来呢,Android提供了一种很好的机制,就是Handler和Looper,Handler和Looper一般用于跨线程传递数据,但当在单 线程里使用时,就变成了一个先进先出的消息泵。利用这个消息泵进行调度,就可以将基站定位和WIFI定位完美结合。以下是相关的代码:
- 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");
- }
- }
- }
- }
- }
- 调用方法:
- 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();
- 如果还想同时使用GPS定位,其实也很简单,可以和FourSquare提供的BestLocationListener结合起来,将上面那段代码添加到BestLocationListener的register方法里:
- 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();
- }