Android模拟器，网络状态和互联网接入 [英] Android emulator, network state and internet access

问题描述

我是想测试一下以下code我仿真器的网络状态，并允许它 android.permission.ACCESS_NETWORK_STATE ：

I was trying to test the network state of my emulator using following code and allowing it android.permission.ACCESS_NETWORK_STATE:

public class Main extends Activity {

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        boolean wified = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
        TextView textView = (TextView) findViewById(R.id.textView1);
        if (wified) {
            textView.setText("Wified");
        } else {
            textView.setText("Not connected to wifi");
        }       
    }
    //..
}

当我运行它的Andr​​oid应用程序，我得到的未连接WiFi 的TextView在模拟器上显示的消息，但是当我使用仿真器连接到google.com或yahoo.com，它工作得很好。

When I run it as Android Application I get Not connected to wifi TextView message displayed on the emulator but when I use emulator to connect to google.com or yahoo.com, it works just fine.

有人能帮助我了解为什么我收到的未连接WiFi 的消息？

Could someone help me understand why am I getting Not connected to wifi message?

感谢。

推荐答案

尝试添加＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;

在你的Andr​​oid清单文件权限的部分。

In permission section in your Android manifest file.

编辑： -
试试这个..

- Try this..

ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo Info = cm.getActiveNetworkInfo();
        if (Info == null || !Info.isConnectedOrConnecting()) {
            Log.i(TAG, "No connection");
        } else {
            int netType = Info.getType();
            int netSubtype = Info.getSubtype();

            if (netType == ConnectivityManager.TYPE_WIFI) {
                Log.i(TAG, "Wifi connection");
             wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
                 int linkSpeed = wifiManager.getConnectionInfo().getLinkSpeed();
            //Need to get wifi strength
        } else if (netType == ConnectivityManager.TYPE_MOBILE) {
          Log.i(TAG, "GPRS/3G connection"); 
           //Need to get differentiate between 3G/GPRS
        } 
    }

Ofcourse，看看这个真实的设备：）

Ofcourse, check this on real device :)

希望这有助于。

这篇关于Android模拟器，网络状态和互联网接入的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！