Android wifi搜索与连接

package com.wifi.utils;import java.util.ArrayList;import java.util.List;import android.content.Context;import android.net.wifi.ScanResult;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.net.wifi.WifiManager.WifiLock;import android.util.Log;public class WifiUtils {private WifiManager localWifiManager;//提供Wifi管理的各种主要API，主要包含wifi的扫描、建立连接、配置信息等//private List<ScanResult> wifiScanList;//ScanResult用来描述已经检测出的接入点，包括接入的地址、名称、身份认证、频率、信号强度等private List<WifiConfiguration> wifiConfigList;//WIFIConfiguration描述WIFI的链接信息，包括SSID、SSID隐藏、password等的设置private WifiInfo wifiConnectedInfo;//已经建立好网络链接的信息private WifiLock wifiLock;//手机锁屏后，阻止WIFI也进入睡眠状态及WIFI的关闭public WifiUtils( Context context){localWifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);}    //检查WIFI状态public int WifiCheckState(){return localWifiManager.getWifiState();}//开启WIFIpublic void WifiOpen(){if(!localWifiManager.isWifiEnabled()){localWifiManager.setWifiEnabled(true);}}//关闭WIFIpublic void WifiClose(){if(!localWifiManager.isWifiEnabled()){localWifiManager.setWifiEnabled(false);}}//扫描wifipublic void WifiStartScan(){localWifiManager.startScan();}//得到Scan结果public List<ScanResult> getScanResults(){return localWifiManager.getScanResults();//得到扫描结果}//Scan结果转为Stingpublic List<String> scanResultToString(List<ScanResult> list){List<String> strReturnList = new ArrayList<String>();for(int i = 0; i < list.size(); i++){ScanResult strScan = list.get(i);String str = strScan.toString();boolean bool = strReturnList.add(str);if(!bool){Log.i("scanResultToSting","Addfail");}}return strReturnList;}//得到Wifi配置好的信息public void getConfiguration(){wifiConfigList = localWifiManager.getConfiguredNetworks();//得到配置好的网络信息for(int i =0;i<wifiConfigList.size();i++){Log.i("getConfiguration",wifiConfigList.get(i).SSID);Log.i("getConfiguration",String.valueOf(wifiConfigList.get(i).networkId));}}//判定指定WIFI是否已经配置好,依据WIFI的地址BSSID,返回NetIdpublic int IsConfiguration(String SSID){Log.i("IsConfiguration",String.valueOf(wifiConfigList.size()));for(int i = 0; i < wifiConfigList.size(); i++){Log.i(wifiConfigList.get(i).SSID,String.valueOf( wifiConfigList.get(i).networkId));if(wifiConfigList.get(i).SSID.equals(SSID)){//地址相同return wifiConfigList.get(i).networkId;}}return -1;}//添加指定WIFI的配置信息,原列表不存在此SSIDpublic int AddWifiConfig(List<ScanResult> wifiList,String ssid,String pwd){int wifiId = -1;for(int i = 0;i < wifiList.size(); i++){ScanResult wifi = wifiList.get(i);if(wifi.SSID.equals(ssid)){Log.i("AddWifiConfig","equals");WifiConfiguration wifiCong = new WifiConfiguration();wifiCong.SSID = "\""+wifi.SSID+"\"";//\"转义字符，代表"wifiCong.preSharedKey = "\""+pwd+"\"";//WPA-PSK密码wifiCong.hiddenSSID = false;wifiCong.status = WifiConfiguration.Status.ENABLED;wifiId = localWifiManager.addNetwork(wifiCong);//将配置好的特定WIFI密码信息添加,添加完成后默认是不激活状态，成功返回ID，否则为-1if(wifiId != -1){return wifiId;}}}return wifiId;}//连接指定Id的WIFIpublic boolean ConnectWifi(int wifiId){for(int i = 0; i < wifiConfigList.size(); i++){WifiConfiguration wifi = wifiConfigList.get(i);if(wifi.networkId == wifiId){while(!(localWifiManager.enableNetwork(wifiId, true))){//激活该Id，建立连接Log.i("ConnectWifi",String.valueOf(wifiConfigList.get(wifiId).status));//status:0--已经连接，1--不可连接，2--可以连接}return true;}}return false;}//创建一个WIFILockpublic void createWifiLock(String lockName){wifiLock = localWifiManager.createWifiLock(lockName);}//锁定wifilockpublic void acquireWifiLock(){wifiLock.acquire();}//解锁WIFIpublic void releaseWifiLock(){if(wifiLock.isHeld()){//判定是否锁定wifiLock.release();}}//得到建立连接的信息public void getConnectedInfo(){wifiConnectedInfo = localWifiManager.getConnectionInfo();}//得到连接的MAC地址public String getConnectedMacAddr(){return (wifiConnectedInfo == null)? "NULL":wifiConnectedInfo.getMacAddress();}//得到连接的名称SSIDpublic String getConnectedSSID(){return (wifiConnectedInfo == null)? "NULL":wifiConnectedInfo.getSSID();}//得到连接的IP地址public int getConnectedIPAddr(){return (wifiConnectedInfo == null)? 0:wifiConnectedInfo.getIpAddress();}//得到连接的IDpublic int getConnectedID(){return (wifiConnectedInfo == null)? 0:wifiConnectedInfo.getNetworkId();}}

package com.wifi.utils;import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import com.example.controlpcpro.R;public class WifiPswDialog extends Dialog{private Button cancelButton;private Button okButton;private EditText pswEdit;private OnCustomDialogListener customDialogListener;public WifiPswDialog(Context context,OnCustomDialogListener customListener) {//OnCancelListener cancelListener) {super(context);// TODO Auto-generated constructor stubcustomDialogListener = customListener;}//定义dialog的回调事件public interface OnCustomDialogListener{void back(String str);}@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.wifi_config_dialog);setTitle("请输入密码");pswEdit = (EditText)findViewById(R.id.wifiDialogPsw);cancelButton = (Button)findViewById(R.id.wifiDialogCancel);okButton = (Button)findViewById(R.id.wifiDialogCertain);cancelButton.setOnClickListener(buttonDialogListener);okButton.setOnClickListener(buttonDialogListener);}private View.OnClickListener buttonDialogListener = new View.OnClickListener() {@Overridepublic void onClick(View view) {// TODO Auto-generated method stubif(view.getId() == R.id.wifiDialogCancel){pswEdit = null;customDialogListener.back(null);cancel();//自动调用dismiss();}else{customDialogListener.back(pswEdit.getText().toString());dismiss();}}};}

package com.example.controlpcpro;import java.util.List;import android.content.Context;import android.net.wifi.ScanResult;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiInfo;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.LinearLayout;import android.widget.ProgressBar;import android.widget.TextView;public class WTAdapter extends BaseAdapter {private LayoutInflater mInflater;private List<ScanResult> mList;private Context mContext;public WTAdapter(Context context, List<ScanResult> list) {// TODO Auto-generated constructor stubthis.mContext = context;this.mList = list;this.mInflater = LayoutInflater.from(context);}// 新加的一个函数，用来更新数据public void setData(List<ScanResult> list) {//Log.i("way", "mList length = "+list.size());//mList.clear();this.mList = list;Log.i("way", "mList length = "+mList.size());notifyDataSetChanged();}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn mList.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn mList.get(position);}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubfinal ScanResult localScanResult = mList.get(position);//final WifiAdmin wifiAdmin = WifiAdmin.getInstance(mContext);final ViewHolder viewHolder;if (convertView == null) {viewHolder = new ViewHolder();convertView = mInflater.inflate(R.layout.wtitem, null);viewHolder.textVName = ((TextView) convertView.findViewById(R.id.name_text_wtitem));viewHolder.textConnect = ((TextView) convertView.findViewById(R.id.connect_text_wtitem));viewHolder.linearLConnectOk = ((LinearLayout) convertView.findViewById(R.id.connect_ok_layout_wtitem));viewHolder.progressBConnecting = ((ProgressBar) convertView.findViewById(R.id.connecting_progressBar_wtitem));viewHolder.textVMac = ((TextView) convertView.findViewById(R.id.name_text_mac));viewHolder.textVJingwei = ((TextView) convertView.findViewById(R.id.jingwei));viewHolder.textVAddress = ((TextView) convertView.findViewById(R.id.address));convertView.setTag(viewHolder);} else {viewHolder = (ViewHolder) convertView.getTag();}// 点击连接处理事件viewHolder.textConnect.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub/*WifiConfiguration localWifiConfiguration = wifiAdmin.createWifiInfo(localScanResult.SSID, WTActivity.WIFI_AP_PASSWORD, 3,"wt");wifiAdmin.addNetwork(localWifiConfiguration);viewHolder.textConnect.setVisibility(View.GONE);viewHolder.progressBConnecting.setVisibility(View.VISIBLE);viewHolder.linearLConnectOk.setVisibility(View.GONE);Handler localHandler = ((WTActivity) mContext).handler;localHandler.sendEmptyMessageDelayed(WTActivity.m_nWTConnected, 3500L);*/}});// 点击断开处理事件viewHolder.linearLConnectOk.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub/*wifiAdmin.disconnectWifi(wifiAdmin.getWifiInfo().getNetworkId());viewHolder.textConnect.setVisibility(View.GONE);viewHolder.progressBConnecting.setVisibility(View.VISIBLE);viewHolder.linearLConnectOk.setVisibility(View.GONE);Handler localHandler = ((WTActivity) mContext).handler;localHandler.sendEmptyMessageDelayed(WTActivity.m_nWTConnected, 3500L);*/}});viewHolder.textConnect.setVisibility(View.GONE);viewHolder.progressBConnecting.setVisibility(View.GONE);viewHolder.linearLConnectOk.setVisibility(View.GONE);viewHolder.textVName.setText("SSID:"+localScanResult.SSID);viewHolder.textVMac.setText("MAC:"+localScanResult.BSSID);if(LocationApplication.location != null){viewHolder.textVJingwei.setText("纬度"+LocationApplication.location.getLatitude()+";经度"+LocationApplication.location.getLongitude());viewHolder.textVAddress.setText("address:"+LocationApplication.location.getAddrStr());}/*WifiInfo localWifiInfo = WifiAdmin.getInstance(mContext).getWifiInfo();// 正连接的wifi信息if (localWifiInfo != null) {try {if ((localWifiInfo.getSSID() != null)&& (localWifiInfo.getSSID().equals(localScanResult.SSID))) {viewHolder.linearLConnectOk.setVisibility(View.VISIBLE);return convertView;}} catch (NullPointerException localNullPointerException) {localNullPointerException.printStackTrace();return convertView;}viewHolder.textConnect.setVisibility(View.VISIBLE);}*/return convertView;}public final class ViewHolder {public LinearLayout linearLConnectOk;public ProgressBar progressBConnecting;public TextView textConnect;public TextView textVName;public TextView textVMac;public TextView textVJingwei;public TextView textVAddress;public ViewHolder() {}}}

package com.example.controlpcpro;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.net.wifi.ScanResult;import android.net.wifi.WifiManager;import android.os.Bundle;import android.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;import com.baidu.location.LocationClient;import com.baidu.location.LocationClientOption;import com.baidu.location.LocationClientOption.LocationMode;import com.wifi.utils.WifiPswDialog;import com.wifi.utils.WifiPswDialog.OnCustomDialogListener;import com.wifi.utils.WifiUtils;public class WTActivity extends Activity {private String wifiPassword = null;private Button wifiSearchButton, backButton;private WifiUtils localWifiUtils;private List<ScanResult> wifiResultList;private List<String> wifiListString = new ArrayList<String>();private ListView wifiSearchListView;//private ArrayAdapter<String> arrayWifiAdapter;private WTAdapter wtAdapter;private LocationClient mLocationClient;//定位SDK的核心类private TextView LocationResult;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_control_pcmain);LocationResult = (TextView)findViewById(R.id.tv_loc_info);mLocationClient = ((LocationApplication)getApplication()).mLocationClient;((LocationApplication)getApplication()).mLocationResult = LocationResult;//调用LocationApplication，获得需要的信息mLocationClient.stop();mLocationClient.start();wifiSearchButton = (Button)findViewById(R.id.search_btn_wt_main);backButton = (Button)findViewById(R.id.back_btn_wt_main);backButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubWTActivity.this.finish();}});WIFIButtonListener wifiButtonListener = new WIFIButtonListener();wifiSearchButton.setOnClickListener(wifiButtonListener);wifiSearchListView = (ListView)findViewById(R.id.wifiListView);//arrayWifiAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,wifiListString);//wifiSearchListView.setAdapter(arrayWifiAdapter);wifiResultList = new ArrayList<ScanResult>();wtAdapter = new WTAdapter(this, wifiResultList);wifiSearchListView.setAdapter(wtAdapter);ListOnItemClickListener wifiListListener = new ListOnItemClickListener();wifiSearchListView.setOnItemClickListener(wifiListListener);localWifiUtils = new WifiUtils(WTActivity.this);}        private Button startLocation;/*@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);        mLocationClient = ((LocationApplication)getApplication()).mLocationClient;                 LocationResult = (TextView)findViewById(R.id.tv_loc_info);         ((LocationApplication)getApplication()).mLocationResult = LocationResult;//调用LocationApplication，获得需要的信息        startLocation = (Button)findViewById(R.id.btn_start);        startLocation.setOnClickListener(new OnClickListener() {                         public void onClick(View v) {                InitLocation();//初始化                if(startLocation.getText().equals("开启定位")){                    mLocationClient.start();                    startLocation.setText("停止定位");                }else{                    mLocationClient.stop();                    startLocation.setText("开启定位");                }            }        });}*/ private void InitLocation(){        LocationClientOption option = new LocationClientOption();        option.setLocationMode(LocationMode.Hight_Accuracy);//设置高精度定位定位模式        option.setCoorType("bd09ll");//设置百度经纬度坐标系格式        option.setScanSpan(1000);//设置发起定位请求的间隔时间为1000ms        option.setIsNeedAddress(true);//反编译获得具体位置，只有网络定位才可以        mLocationClient.setLocOption(option);    } @Override    protected void onStop() {        mLocationClient.stop();        super.onStop();    } @Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.control_pcmain, menu);return true;}class WIFIButtonListener implements OnClickListener{@Overridepublic void onClick(View view) {// TODO Auto-generated method stubmLocationClient.stop();mLocationClient.start();wifiListString.clear();localWifiUtils.WifiOpen();localWifiUtils.WifiStartScan();//0正在关闭,1WIFi不可用,2正在打开,3可用,4状态不可zhiwhile(localWifiUtils.WifiCheckState() != WifiManager.WIFI_STATE_ENABLED){//等待Wifi开启Log.i("WifiState",String.valueOf(localWifiUtils.WifiCheckState()));}try {Thread.sleep(3000);//休眠3s，不休眠则会在程序首次开启WIFI时候，处理getScanResults结果，wifiResultList.size()发生异常} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}wifiResultList = localWifiUtils.getScanResults();System.out.println("++++++++++"+wifiResultList.size());localWifiUtils.getConfiguration();if(wifiListString != null){Log.i("WIFIButtonListener","dataChange");scanResultToString(wifiResultList,wifiListString);}}}public void scanResultToString(List<ScanResult> listScan,List<String> listStr){for(int i = 0; i <listScan.size(); i++){ScanResult strScan = listScan.get(i);String str = strScan.SSID+"--"+strScan.BSSID;//String str = strScan.boolean bool = listStr.add(str);if(bool){//wtAdapter.notifyDataSetChanged();//数据更新,只能单个Item更新，不能够整体List更新wtAdapter = new WTAdapter(this, wifiResultList);wifiSearchListView.setAdapter(wtAdapter);}else{Log.i("scanResultToSting","fail");}Log.i("scanResultToString",listStr.get(i));}}class ListOnItemClickListener implements OnItemClickListener{String wifiItemSSID = null;private View selectedItem;@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {// TODO Auto-generated method stubLog.i("ListOnItemClickListener","start");selectedItem = arg1;//arg1.setBackgroundResource(R.color.gray);//点击的Item项背景设置ScanResult wifiItem = wifiResultList.get(arg2);//获得选中的设备wifiItemSSID = wifiItem.SSID; Log.i("ListOnItemClickListener",wifiItemSSID);int wifiItemId = localWifiUtils.IsConfiguration("\""+wifiItemSSID+"\"");Log.i("ListOnItemClickListener",String.valueOf(wifiItemId));if(wifiItemId != -1){if(localWifiUtils.ConnectWifi(wifiItemId)){//连接指定WIFI//arg1.setBackgroundResource(R.color.gray);Toast.makeText(WTActivity.this, "已经连接该wifi", 1000).show();}}else{//没有配置好信息，配置Toast.makeText(WTActivity.this, "未连接该wifi", 1000).show();/*WifiPswDialog pswDialog = new WifiPswDialog(WTActivity.this,new OnCustomDialogListener() {@Overridepublic void back(String str) {// TODO Auto-generated method stubToast.makeText(WTActivity.this, "未连接该wifi", 1000).show();wifiPassword = str;if(wifiPassword != null){int netId = localWifiUtils.AddWifiConfig(wifiResultList,wifiItemSSID, wifiPassword);Log.i("WifiPswDialog",String.valueOf(netId));if(netId != -1){localWifiUtils.getConfiguration();//添加了配置信息，要重新得到配置信息if(localWifiUtils.ConnectWifi(netId)){}}else{Toast.makeText(WTActivity.this, "网络连接错误", Toast.LENGTH_SHORT).show();//selectedItem.setBackgroundResource(R.color.blue);}}else{//selectedItem.setBackgroundResource(R.color.blue);}}});pswDialog.show();*/}}}//ScanResult类型转为String/*private BroadcastReceiver WifiBroadcastRec = new BroadcastReceiver(){@Overridepublic void onReceive(Context context, Intent intent) {// TODO Auto-generated method stubString wifiAction = intent.getAction();if(WifiManager.WIFI_STATE_CHANGED_ACTION.equals(wifiAction)){int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,WifiManager.WIFI_STATE_ENABLED);if(wifiState == WifiManager.WIFI_STATE_ENABLED){try {Thread.sleep(3000);//休眠3s，不休眠则会在程序首次开启WIFI时候，处理getScanResults结果，wifiResultList.size()发生异常} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}wifiResultList = localWifiUtils.getScanResults();localWifiUtils.getConfiguration();if(wifiListString != null){scanResultToString(wifiResultList,wifiListString);}}}    }};*//*@Overrideprotected void onDestroy () {super.onDestroy();System.out.println("----------");WTActivity.this.finish();}*/}

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.controlpcpro"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="10"        android:targetSdkVersion="19" /><!-- <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"></uses-permission>允许程序改变网络链接状态<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>允许程序访问访问WIFI网络状态信息 <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>允许程序改变WIFI链接状态<uses-permission android:name="android.permission.INTERNET"></uses-permission> -->        <permission android:name="android.permission.BAIDU_LOCATION_SERVICE" >    </permission>     <uses-permission android:name="android.permission.BAIDU_LOCATION_SERVICE" >    </uses-permission>    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" >    </uses-permission>    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" >    </uses-permission>    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" >    </uses-permission>    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >    </uses-permission>    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" >    </uses-permission>    <uses-permission android:name="android.permission.READ_PHONE_STATE" >    </uses-permission>    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >    </uses-permission>    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" >    </uses-permission>    <uses-permission android:name="android.permission.READ_LOGS" >    </uses-permission>            <application        android:name="com.example.controlpcpro.LocationApplication"        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@android:style/Theme.NoTitleBar"  >        <activity            android:name="com.example.controlpcpro.WTActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity            android:name="com.example.controlpcpro.ControlActivity">        </activity>                        <meta-data  android:name="com.baidu.lbsapi.API_KEY"  android:value="ksgmo1pQZVALFzdo1OgiAaXD" />            </application></manifest>