Question

我试图使用以下代码测试我的模拟器的网络状态并允许它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");
        }       
    }
    //..
}

当我将其作为Android应用程序运行时，我得到未连接到wifi 模拟器上显示的TextView消息但是当我使用模拟器连接到google.com或yahoo.com时，它工作得很好。

有人可以帮我理解为什么我没有连接到wifi 消息？

感谢。

Answer 1

尝试添加<uses-permission android:name="android.permission.INTERNET" />

在Android清单文件的权限部分。

修改： - 试试这个..

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 } }

当然，请在真实设备上查看：）

希望这会有所帮助。

Answer 2

因为模拟器无法模拟wifi，请参阅此答案和文档。我认为如果你在模拟器中执行此方法，它将始终返回“未连接到wifi”。

How to turn on the Wi-Fi on android emulator device?

http://developer.android.com/tools/devices/emulator.html

Answer 3

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

    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo[] networkInfos = connectivityManager.getAllNetworkInfo();
    StringBuffer networkInfo = new StringBuffer();
    for (NetworkInfo nextNetworkInfo : networkInfos) {
        networkInfo.append(nextNetworkInfo.getTypeName() + ", ");
    }
    TextView textView = (TextView) findViewById(R.id.textView1);
    textView.setText(networkInfo.toString());

}

以上代码移动，WIFI，mobile_mms，mobile_supl，mobile_hipri，在AVD上显示为TextView消息。

Android模拟器，网络状态和互联网访问

3 个答案: