处理不活跃的Wi-Fi网络

Question

假设手机找到开放的Wi-Fi网络并连接到它.但是Wi-Fi网络是"非活动的",即当您打开浏览器时,您会看到凭据提示.我的手机上有很多应用程序(例如网络浏览器),在这种情况下无效.我想使用移动网络发送数据,但系统仍尝试使用Wi-Fi.

NetworkInfo.isAvailable()和NetworkInfo.isConnected()仍返回true所描述的Wi-Fi网络.有解决方案吗

Answer 1

尝试这个....

我需要做一些定制工作..但是让它启动并运行......

我的代码关闭switches from Wifi to Mobile network时。

我使用 知道TimeService at port 37互联网已死，而 wifi 连接仍处于开启状态

///////////////////////////已编辑///////////////////////// /////////////////////

现在我把complete working code我做的放在这里。请原谅我，因为DRY（不要重复自己的原则）在这里被滥用了。所以在生产网络中使用时，请重构代码，将重复的代码转换为方法，即转换为 a 。single sensible place

/////---------------------------Intial Available Network Checking



private boolean checkConnection(){


boolean connected = false;
ConnectivityManager cm =  (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

if (cm != null) {
NetworkInfo[] netInfo = cm.getAllNetworkInfo();

for (NetworkInfo ni : netInfo) {
if ((ni.getTypeName().equalsIgnoreCase("WIFI")
|| ni.getTypeName().equalsIgnoreCase("MOBILE"))
& ni.isConnected() & ni.isAvailable()) {
connected = true;
     }

   }
 }


return connected;

} /////----------------------------初始可用网络检查

/////-------------------------------Check for the working Internet Connection


public boolean inetAddr(){

    boolean x1 = false;


    try {
        Socket s = new Socket("utcnist.colorado.edu", 37);

        InputStream i = s.getInputStream();

        Scanner scan = new Scanner(i);

        while(scan.hasNextLine()){

            System.out.println(scan.nextLine());
            x1 = true;
        }
    } catch (Exception e) {


            x1 = false;
    } 

    return x1;

}

/////-------------------------------Check for the working Internet Connection


////-------------------------------Check Mobile Conectivity Again

public boolean mobileConnect(){

    boolean conn = false;
    ConnectivityManager cm =  (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNet = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

    if(activeNet != null){

        conn = true;
    }else{

        conn = false;
    }

    return conn;



}

////------------------------------Check Mobile Conectivity Again

这里我使用上述方法......

try{    
     if (!checkConnection()){


         AlertDialog.Builder myAlertDialog = new AlertDialog.Builder(YumZingSplashActivity.this);
         myAlertDialog.setTitle("--- Connectivity Check ---");
         myAlertDialog.setMessage("No Internet Connectivity");
         myAlertDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {

          public void onClick(DialogInterface arg0, int arg1) {

            YumZingSplashActivity.this.finish();
            //splashHandler.removeCallbacks(launcherRunnable);

          }});
            System.out.println("No Internet Connectivity");

            myAlertDialog.show();           




        }
        else{


              if(inetAddr()){
            aphandle = APIHandling.getInstance();
            aphandle.xmlCreateSession();
            System.out.println("Net Connectivity is Present");
            DURATION = Integer.valueOf(getString(R.string.splash_duration));



            splashHandler = new Handler();

            //  ================ Main Code of the Application
            launcherRunnable = new Runnable() {

                public void run() {
                    Intent i = new Intent(YumZingSplashActivity.this, YumZingTabHostActivity.class);
                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(i);
                    YumZingSplashActivity.this.finish();
                }
            };
            if (DEBUG)
            {
                splashHandler.post(launcherRunnable);
            }
            else{


                splashHandler.postDelayed(launcherRunnable, DURATION);
            }

        }
              else{

                  if(mobileConnect()){


                      if(inetAddr()){
                      aphandle = APIHandling.getInstance();
                        aphandle.xmlCreateSession();
                        System.out.println("Net Connectivity is Present");
                        DURATION = Integer.valueOf(getString(R.string.splash_duration));



                        splashHandler = new Handler();

                        //  ================ Main Code of the Application
                        launcherRunnable = new Runnable() {

                            public void run() {
                                Intent i = new Intent(YumZingSplashActivity.this, YumZingTabHostActivity.class);
                                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                                startActivity(i);
                                YumZingSplashActivity.this.finish();
                            }
                        };
                        if (DEBUG)
                        {
                            splashHandler.post(launcherRunnable);
                        }
                        else{


                            splashHandler.postDelayed(launcherRunnable, DURATION);
                        }
                      }else{

                          AlertDialog.Builder myAlertDialog = new AlertDialog.Builder(YumZingSplashActivity.this);
                         myAlertDialog.setTitle("--- Connectivity Check ---");
                         myAlertDialog.setMessage("No Internet Connectivity");
                         myAlertDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {

                          public void onClick(DialogInterface arg0, int arg1) {

                            YumZingSplashActivity.this.finish();
                            //splashHandler.removeCallbacks(launcherRunnable);

                          }});
                            System.out.println("No Internet Connectivity");

                            myAlertDialog.show();       
                      }
                  }else{




                         AlertDialog.Builder myAlertDialog = new AlertDialog.Builder(YumZingSplashActivity.this);
                         myAlertDialog.setTitle("--- Connectivity Check ---");
                         myAlertDialog.setMessage("No Internet Connectivity");
                         myAlertDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {

                          public void onClick(DialogInterface arg0, int arg1) {

                            YumZingSplashActivity.this.finish();
                            //splashHandler.removeCallbacks(launcherRunnable);

                          }});
                            System.out.println("No Internet Connectivity");

                            myAlertDialog.show();           






                  }

              }
        }

     //setContentView(R.layout.yumzing_splash_layout);
    }  catch(Exception ex){

            System.out.println("Leak ko catch");
        }



    }