android - 在模拟器上检测互联网连接

Question

好的，这是我用来检测互联网连接的代码：

ConnectivityManager cm = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
                    NetworkInfo ni = cm.getActiveNetworkInfo();
                    if(ni.isConnected())
                        //do stuff if there is internet connection
                    else
                       //do stuff if there is no internet connection

然而，即使我的电脑没有连接到互联网，模拟器也认为他是这样的，我该如何解决这个问题？无线设备也已关闭。

Answer 1

尝试这个：

public boolean isConnectionAvailable() {
    ConnectivityManager connectivity = (ConnectivityManager) _context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivity != null) {
        NetworkInfo[] info = connectivity.getAllNetworkInfo();
        if (info != null)
            for (int i = 0; i < info.length; i++)
                if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                    return true;
                }
    }
    return false;
}

希望这可以帮助。

Answer 2

你可以简单地使用这个..

public boolean isNetworkAvailable() {
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = cm.getActiveNetworkInfo();
    // if no network is available networkInfo will be null
    // otherwise check if we are connected
    if (networkInfo != null && networkInfo.isConnected()) {
        return true;
    }
    return false;
}

是的，向清单文件添加权限：

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

Answer 3

public static boolean isInternetAvailable(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getActiveNetworkInfo();
        if (netInfo != null && netInfo.isConnectedOrConnecting()) {
            return true;
        }
        return false;
    }

我希望它对你有用..

Answer 4

public static boolean determineConnectivity(Context ctx) {
        ConnectivityManager manager = (ConnectivityManager) ctx
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = manager.getActiveNetworkInfo();
        return info != null && info.getState() == NetworkInfo.State.CONNECTED;
    }