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：
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[*]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;
[*] aryCell = cid;
[*] aryCell = -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);
[*] 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;
[*] return aryCells;
[*] }
[*]
[*] List<NeighboringCellInfo> lsCellInfo = this.tel.getNeighboringCellInfo();
[*] if (lsCellInfo == null || lsCellInfo.size() == 0) {
[*] aryCells = new int;
[*] int i = cid();
[*] aryCells = i;
[*] return aryCells;
[*] }
[*] int[] arrayOfInt1 = new int;
[*] int j = 0 + 1;
[*] int k = cid();
[*] arrayOfInt1 = k;
[*] int m = j + 1;
[*] int n = asu();
[*] arrayOfInt1 = 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 = i2;
[*] m = i3 + 1;
[*] int i4 = localNeighboringCellInfo.getRssi();
[*] arrayOfInt1 = i4;
[*] }
[*] int[] arrayOfInt2 = new int;
[*] 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;
[*] int i2 = k * 2 + 1;
[*] int i3 = arrayOfInt;
[*] 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;
[*] 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;
[*] Method localMethod1 = clsCellLocation.getMethod("getBaseStationId", aryClass);
[*] Method localMethod2 = clsCellLocation.getMethod("getSystemId", aryClass);
[*] Method localMethod3 = clsCellLocation.getMethod("getNetworkId", aryClass);
[*] Object[] aryDummy = new Object;
[*] 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;
[*] aryJsonArray = this.objCellTowersJson;
[*] aryJsonArray = CellLocationManager.this.wifiManager.wifiTowers();
[*] if(this.objCellTowersJson != null)
[*] Log.i("CellTownerJSON", this.objCellTowersJson.toString());
[*] if(aryJsonArray != null)
[*] Log.i("WIFITownerJSON", aryJsonArray.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;
[*] if (nFirstCellId == aryCells) {
[*] // 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 += 2;
[*] }
[*] // goto L17
[*] nIndex = 0;
[*] while (nIndex < aryCells.length) {
[*] // goto L20
[*] arraylist1.add(aryCells);
[*] 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;
[*] jsonObject.put("cell_towers", cellJson);
[*] JSONArray wifiJson = paramArrayOfJSONArray;
[*] 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();
[*] }
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