Question

我使用过以下代码For Wheather Intenet连接是否可用，它可以很好地工作到3G系统。但它不适用于4G技术。任何人都知道如何在4g上找到可用的互联网连接？如果任何机构有民主代码，请提供

代码：

public static boolean checkConnection(Context c)
{
        ConnectivityManager mConnectivityManager = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE);
        TelephonyManager telephonyManager = (TelephonyManager) c.getSystemService(Context.TELEPHONY_SERVICE);

        if(mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected() || telephonyManager.getDataState() == TelephonyManager.DATA_CONNECTED)
            return true;
        else
            return false;
    }

先谢谢 Nirav modh

Answer 1

使用TYPE_WIMAX
但它在API级别8

http://developer.android.com/reference/android/net/ConnectivityManager.html#TYPE_WIMAX

Answer 2

Context context = MainActivity.this;
    public synchronized static boolean isNetAvailable(Context context){

            boolean isNetAvailable=false;

            if ( context != null ){
                ConnectivityManager mgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
                if ( mgr != null ){
                    boolean mobileNetwork = false;
                    boolean wifiNetwork = false;
                    boolean wiMaxNetwork = false;

                    boolean mobileNetworkConnecetd = false;
                    boolean wifiNetworkConnecetd = false;
                    boolean wiMaxNetworkConnected = false;

                    NetworkInfo mobileInfo = mgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
                    NetworkInfo wifiInfo = mgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
                    NetworkInfo wiMaxInfo = mgr.getNetworkInfo(ConnectivityManager.TYPE_WIMAX);

                    if ( mobileInfo != null )
                        mobileNetwork = mobileInfo.isAvailable();                   

                    if ( wifiInfo != null )
                        wifiNetwork = wifiInfo.isAvailable();

                    if(wiMaxInfo != null)
                        wiMaxNetwork = wiMaxInfo.isAvailable();

                    if(wifiNetwork == true || mobileNetwork == true || wiMaxNetwork == true){
                        mobileNetworkConnecetd = mobileInfo.isConnectedOrConnecting();
                        wifiNetworkConnecetd = wifiInfo.isConnectedOrConnecting();
                        wiMaxNetworkConnected = wiMaxInfo.isConnectedOrConnecting();
                    }
                    isNetAvailable = ( mobileNetworkConnecetd || wifiNetworkConnecetd || wiMaxNetworkConnected );
                }
            }
            return isNetAvailable;
        }

检查isNetAvailable的值在所有3个案例中都适用于我，也希望为你工作

注意：4G可用性将引入API级别8以后。

Answer 3

检查所有互联网连接的最佳方法是这么简短和点代码：

public boolean isConnectingToInternet() {
ConnectivityManager connectivity = (ConnectivityManager) applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivity != null) {
        NetworkInfo[] allNetworkInfo = connectivity.getAllNetworkInfo();
        if (allNetworkInfo != null)
            for (NetworkInfo info : allNetworkInfo)
                if (info.isConnectedOrConnecting()) {
                    return true;
                }
    }
    return false;
}

Answer 4

试试这个：

public static Boolean check_connection(final Context _context)
    {
        boolean connected;

        ConnectivityManager conectivtyManager = (ConnectivityManager) _context
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        if (conectivtyManager.getActiveNetworkInfo() != null
                && conectivtyManager.getActiveNetworkInfo().isAvailable()
                && conectivtyManager.getActiveNetworkInfo().isConnected())
        {
            connected = true;

        } else
        {
            connected = false;
        }
        return connected;
    }

Answer 5

public static boolean checkConnection(Context c)
{
    ConnectivityManager connectivityManager = (ConnectivityManager)
        getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
    if (activeNetInfo!=null&&activeNetInfo.isConnected()){
        Log.e(TAG, "Net connected");
        return true;
    }else{
        Log.e(TAG, "Net Disconnected" );
        return false;
    }
}

如何在Android 4G上找到互联网连接？

5 个答案: