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我需要帮助。我想要祝酒以在我的应用程序中显示 Internet 状态。它适用于 wifi 和移动数据包（移动互联网）。但是当互联网完全断开连接时，它什么也没有显示。我不知道该怎么做。这是我的代码

public class ConnectivityReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    Log.d("myapp", "action: " + intent.getAction());
    ConnectivityManager cm =
            (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
    boolean isConnected = activeNetwork != null &&
                          activeNetwork.isConnectedOrConnecting();

     if(isConnected)
     {
     if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
     {
         Toast toast = Toast.makeText(context, "Connected to wifi", Toast.LENGTH_LONG);
         toast.show();
     }
     else if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
     {
         Toast toast = Toast.makeText(context, "Connected to Mobile Data Pakage", Toast.LENGTH_LONG);
         toast.show();

     }
     else 
      {
         Toast toast = Toast.makeText(context, "Not Connected", Toast.LENGTH_LONG);
         toast.show();

      }

也试试这个，但编译器显示错误。请帮助我。提前致谢。

 else if(activeNetwork.getType() == ConnectivityManager.EXTRA_NO_CONNECTIVITY)
      {
                                                                                  Toast toast = Toast.makeText(context, "Not Connected", Toast.LENGTH_LONG);
         toast.show();

宣言

 <receiver android:name="com.networkstatechange.ConnectivityReceiver" >
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
        </intent-filter>
    </receiver>
4

3 回答 3

2

公共类 ConnectionDetector {

private Context _context;

public ConnectionDetector(Context context){
    this._context = context;
}

public boolean isConnectingToInternet(){
    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;
}

}

创建这个类

并在接收器中使用 isConnecting to internet 方法 onreceive 它应该可以正常工作

很可能编码:)

于 2014-04-18T14:50:00.577 回答
1

使用正确的缩进，你会看到你的 toast 'Not connected' 只有当你输入 block 时才会显示if (isConnected)。这样重写：

 if(isConnected)
 {
   if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
   {
       Toast toast = Toast.makeText(context, "Connected to wifi", Toast.LENGTH_LONG);
       toast.show();
   }
   else if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
   {
       Toast toast = Toast.makeText(context, "Connected to Mobile Data Pakage", Toast.LENGTH_LONG);
       toast.show();

   }
 }
 else 
  {
     Toast toast = Toast.makeText(context, "Not Connected", Toast.LENGTH_LONG);
     toast.show();

  }
 }
于 2014-04-18T14:47:03.570 回答
1

尝试这个

public static boolean checkConn(Context ctx) {
       ConnectivityManager conMgr = (ConnectivityManager) ctx.getSystemService(Context.CONNECTIVITY_SERVICE);
       NetworkInfo i = conMgr.getActiveNetworkInfo();
       if (i == null)
        return false;
        if (!i.isConnected())
        return false;
        if (!i.isAvailable())
        return false;
        return true;        
    }

还用..

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

于 2014-04-18T14:49:44.037 回答