Android 通过代码设置、打开wifi热点及热点连接的实现代码

package com.tel.lajoin.wifi.hotspot; import java.lang.reflect.Method; import android.app.Activity; import android.content.Context; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiManager; import android.os.Bundle; import android.view.View; import android.widget.Button; public class HotspotActivity extends Activity {  private WifiManager wifiManager;  private Button open;  private boolean flag=false;  @Override  protected void onCreate(Bundle savedInstanceState) {   // TODO Auto-generated method stub   super.onCreate(savedInstanceState);   setContentView(R.layout.main);   //获取wifi管理服务   wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);   open=(Button)findViewById(R.id.open_hotspot);   //通过按钮事件设置热点   open.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {     //如果是打开状态就关闭，如果是关闭就打开     flag=!flag;     setWifiApEnabled(flag);    }   });  }  // wifi热点开关  public boolean setWifiApEnabled(boolean enabled) {   if (enabled) { // disable WiFi in any case    //wifi和热点不能同时打开，所以打开热点的时候需要关闭wifi    wifiManager.setWifiEnabled(false);   }   try {    //热点的配置类    WifiConfiguration apConfig = new WifiConfiguration();    //配置热点的名称(可以在名字后面加点随机数什么的)    apConfig.SSID = "YRCCONNECTION";    //配置热点的密码    apConfig.preSharedKey="12122112";     //通过反射调用设置热点    Method method = wifiManager.getClass().getMethod(      "setWifiApEnabled", WifiConfiguration.class, Boolean.TYPE);    //返回热点打开状态    return (Boolean) method.invoke(wifiManager, apConfig, enabled);   } catch (Exception e) {    return false;   }  } } 

package com.tel.lajoin.wifiscan; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.wifi.ScanResult; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiManager; import android.os.Bundle; public class MainActivity extends Activity {   private List<ScanResult> wifiList;   private WifiManager wifiManager;   private List<String> passableHotsPot;   private WifiReceiver wifiReceiver;   private boolean isConnected=false;   private Button connect;   @Override   public void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     init();   }   /* 初始化参数 */   public void init() {     setContentView(R.layout.main);     connect=(Button)findViewById(R.id.connect);     wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);     wifiReceiver = new WifiReceiver();     //通过按钮事件搜索热点     connect.setOnClickListener(new View.OnClickListener() {       @Override       public void onClick(View v) {         wifiManager.startScan();       }     });      }   /* 监听热点变化 */   private final class WifiReceiver extends BroadcastReceiver {     @Override     public void onReceive(Context context, Intent intent) {       wifiList = wifiManager.getScanResults();       if (wifiList == null || wifiList.size() == 0 || isConnected)         return;       onReceiveNewNetworks(wifiList);     }   }   /*当搜索到新的wifi热点时判断该热点是否符合规格*/   public void onReceiveNewNetworks(List<ScanResult> wifiList){     passableHotsPot=new ArrayList<String>();     for(ScanResult result:wifiList){       System.out.println(result.SSID);       if((result.SSID).contains("YRCCONNECTION"))         passableHotsPot.add(result.SSID);     }     synchronized (this) {       connectToHotpot();     }   }   /*连接到热点*/   public void connectToHotpot(){     if(passableHotsPot==null || passableHotsPot.size()==0)       return;     WifiConfiguration wifiConfig=this.setWifiParams(passableHotsPot.get(0));     int wcgID = wifiManager.addNetwork(wifiConfig);     boolean flag=wifiManager.enableNetwork(wcgID, true);     isConnected=flag;     System.out.println("connect success? "+flag);   }   /*设置要连接的热点的参数*/   public WifiConfiguration setWifiParams(String ssid){     WifiConfiguration apConfig=new WifiConfiguration();     apConfig.SSID="/""+ssid+"/"";     apConfig.preSharedKey="/"12122112/"";     apConfig.hiddenSSID = true;     apConfig.status = WifiConfiguration.Status.ENABLED;     apConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);     apConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);     apConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);     apConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);     apConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);     apConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);     return apConfig;   }   @Override   protected void onDestroy() {     super.onDestroy();     /*销毁时注销广播*/     unregisterReceiver(wifiReceiver);   } }