android > WiFi > 新建连接

Wifi2Activity.java

package wifi2.com;import java.util.ArrayList;import java.util.List;import wifi2.com.WifiConnect.WifiCipherType;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiManager;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ScrollView;import android.widget.TextView;import android.widget.Toast;public class Wifi2Activity extends Activity{// 右侧滚动条按钮private Button connect;private TextView Tsid;private TextView Tpwd;private String sid;private String pwd;/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);connect = (Button) findViewById(R.id.connect);Tsid = (TextView) findViewById(R.id.sid);Tpwd = (TextView) findViewById(R.id.pwd);connect.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {// TODO Auto-generated method stubsid = Tsid.getText().toString();pwd = Tpwd.getText().toString();//WifiAdmin wifiAdmin = new WifiAdmin(Wifi2Activity.this);WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);WifiConfiguration wc = new WifiConfiguration();wc.SSID = "\""+sid+"\"";//Milliwave Tech//判断并开启 wifi if (!wifi.isWifiEnabled()) {wifi.setWifiEnabled(true);}//\\//检查是否已经存在相同ssidList<WifiConfiguration> list = wifi.getConfiguredNetworks();for( WifiConfiguration i : list ) {    if(i.SSID != null && i.SSID.equals("\"" + sid + "\"")) {//连接wifi.disconnect(); //not in OP        wifi.enableNetwork(i.networkId, true);    wifi.reconnect(); //not in OP //\\//删除    //wifi.removeNetwork(i.networkId);           break;    }           }//\\//-- 是否是开放式的不用密码------------------//如果有密码//wc.preSharedKey  = "\""+pwd+"\"";////wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);//如果是开发式的没有密码的wc.wepKeys[0] = "";  wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);  wc.wepTxKeyIndex = 0;//-- ==============================wc.hiddenSSID = true;wc.status = WifiConfiguration.Status.ENABLED;        wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);// TYPE = WIFICIPHER_WEP,WIFICIPHER_WPA, WIFICIPHER_NOPASS, WIFICIPHER_INVALID  //wifi.saveConfiguration();int res = wifi.addNetwork(wc);Toast.makeText(Wifi2Activity.this, "add Network returned " + res, Toast.LENGTH_LONG).show();boolean b = wifi.enableNetwork(res, true);   Toast.makeText(Wifi2Activity.this, "enableNetwork returned " + b, Toast.LENGTH_LONG).show();//wifi.removeNetwork(addNetId);移除指定WIFInetid//wifiAdmin.AddNetwork();}});}}

main.xml 布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"       android:layout_width="fill_parent"      android:layout_height="fill_parent"    android:orientation="vertical"    >        <TextView     android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:text="SID"        />        <EditText     android:id="@+id/sid"    android:layout_width="fill_parent"     android:layout_height="wrap_content"                />     <TextView     android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:text="PassWord"        />             <EditText     android:id="@+id/pwd"    android:layout_width="fill_parent"     android:layout_height="wrap_content"                />      <Button    android:id="@+id/connect"    android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:text="连接Wifi"    /></LinearLayout>

判断 wifi 连接是否可用

public boolean isWifiConnect() {  ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);  NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);  return mWifi.isConnected();  }

获取 android 的 ip

public String getLocalIpAddress() {         try {             for (Enumeration<NetworkInterface> en = NetworkInterface                    .getNetworkInterfaces(); en.hasMoreElements();) {                  NetworkInterface intf = en.nextElement();                for (Enumeration<InetAddress> enumIpAddr = intf                        .getInetAddresses(); enumIpAddr.hasMoreElements();) {                    InetAddress inetAddress = enumIpAddr.nextElement();                    if (!inetAddress.isLoopbackAddress()) {                        return inetAddress.getHostAddress().toString();                     }                  }            } } catch (SocketException ex) { } return null; }

enableNetwork 后要做循环处理待配置好所有WIFI 信息

for (int i = 0; i < 6; i++) {         if(isWifiConnect() == false || getLocalIpAddress() == null || getLocalIpAddress() == ""){                                                                     sleep(2000);        }}

或者判断当前 WIFI 的 SSIWifiInfo info = wifi.getConnectionInfo();

String ssid = info.getSSID();if(!ssid.contains("BroadlinkProv")){      cNewstatus = 0;}

如果网络类型只是 WPA

wc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);

获取IP,MASK,DNS等信息

package t3.com;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.widget.TextView;import android.net.*;import android.net.wifi.WifiManager;import android.text.format.Formatter;public class T3Activity extends Activity {    public String   s_dns1 ;    public String   s_dns2;         public String   s_gateway;      public String   s_ipAddress;        public String   s_leaseDuration;        public String   s_netmask;      public String   s_serverAddress;    TextView info;    DhcpInfo d;    WifiManager wifii;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        wifii= (WifiManager) getSystemService(Context.WIFI_SERVICE);        d=wifii.getDhcpInfo();        s_dns1="DNS 1: "+String.valueOf(d.dns1);        s_dns2="DNS 2: "+String.valueOf(d.dns2);            s_gateway="Default Gateway: "+String.valueOf(d.gateway);                    // Formatter.formatIpAddress(d.ipAddress) 方法是将 返回的INT 型 转为 IP 格式        s_ipAddress="IP Address: "+String.valueOf(Formatter.formatIpAddress(d.ipAddress)); //本地IP                s_leaseDuration="Lease Time: "+String.valueOf(d.leaseDuration);             s_netmask="Subnet Mask: "+String.valueOf(Formatter.formatIpAddress(d.netmask));    //本地mask        s_serverAddress="Server IP: "+String.valueOf(d.serverAddress);        //dispaly them        info= (TextView) findViewById(R.id.tv);        info.setText("Network Info\n"+s_dns1+"\n"+s_dns2+"\n"+s_gateway+"\n"+s_ipAddress+"\n"+s_leaseDuration+"\n"+s_netmask+"\n"+s_serverAddress);    }}

获取MAC 地址

public String getLocalMacAddress()     {                          WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);          WifiInfo info = wifi.getConnectionInfo();          return info.getMacAddress();      }

其中 wifiinfo , getConnectionInfo()

wifiinfo.getBSSID()；

wifiinfo.getSSID()；

wifiinfo.getIpAddress()；获取IP地址。

wifiinfo.getMacAddress()；获取MAC地址。

wifiinfo.getNetworkId()；获取网络ID。

wifiinfo.getLinkSpeed()；获取连接速度，可以让用户获知这一信息。

wifiinfo.getRssi()； 获取RSSI，RSSI就是接受信号强度指示。在这可以直接和华为提供的Wi-Fi信号阈值进行比较来提供给用户，让用户对网络或地理位置做出调整来获得最好的连接效果。

这里得到信号强度就靠wifiinfo.getRssi()； 这个方法。

** 检查网络是否连接

package wifi3.com;import android.app.Activity;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.os.Bundle;import android.widget.Toast;public class Wifi3Activity extends Activity {    /** Called when the activity is first created. */        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                ConnectivityManager cm=(ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo info=cm.getActiveNetworkInfo();        if(info!=null&&info.isConnected())        {        Toast.makeText(Wifi3Activity.this, "可以上网", Toast.LENGTH_LONG).show();        }else{        Toast.makeText(Wifi3Activity.this, "不能上网", Toast.LENGTH_LONG).show();        }                    }        }

给权限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

开启关闭 WIFI

wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);3·开启、关闭wifi if (wifiManager.isWifiEnabled()) {  wifiManager.setWifiEnabled(false);  } else {  wifiManager.setWifiEnabled(true);  }

获取网关地址

private static WifiManager wifiManager;     private static DhcpInfo dhcpInfo;     private static WifiInfo wifiInfo;    //获取网关    public static String getGateWay(Context context){         wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);         dhcpInfo = wifiManager.getDhcpInfo();         //dhcpInfo获取的是最后一次成功的相关信息，包括网关、ip等          return Formatter.formatIpAddress(dhcpInfo.gateway);          }

** 获取当前连接WIFI NET ID 的信息包括加密方式等

WifiInfo info = wifi.getConnectionInfo(); List<WifiConfiguration> configs = null;configs = wifi.getConfiguredNetworks();Log.d("log2", "[[[[[[[[[[[[[[[[[[[[[["+configs.get(info.getNetworkId())+"]]]]]]]]]]]]]]]]]]]]]]]]]]");

输出如下字符串

02-05 11:15:26.225: D/log2(7358): [[[[[[[[[[[[[[[[[[[[[[* ID: 3 SSID: "BroadlinkAP" BSSID: null PRIO: 41502-05 11:15:26.225: D/log2(7358):  KeyMgmt: WPA_PSK Protocols: RSN02-05 11:15:26.225: D/log2(7358):  AuthAlgorithms:02-05 11:15:26.225: D/log2(7358):  PairwiseCiphers: TKIP CCMP02-05 11:15:26.225: D/log2(7358):  GroupCiphers: TKIP CCMP02-05 11:15:26.225: D/log2(7358):  PSK: *02-05 11:15:26.225: D/log2(7358):  eap: 02-05 11:15:26.225: D/log2(7358):  phase2: 02-05 11:15:26.225: D/log2(7358):  identity: 02-05 11:15:26.225: D/log2(7358):  anonymous_identity: 02-05 11:15:26.225: D/log2(7358):  password: 02-05 11:15:26.225: D/log2(7358):  client_cert: 02-05 11:15:26.225: D/log2(7358):  private_key: 02-05 11:15:26.225: D/log2(7358):  ca_cert: 02-05 11:15:26.225: D/log2(7358): ]]]]]]]]]]]]]]]]]]]]]]]]]]

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