Visual Studio 2017 studio showing error 'This application is in break mode' and throws unhandled exception

Question

I am developing a Xamarin.Android app. Whenever i try to download a JSON feed I get the error "Your app has entered a break state, but there is no code to show because all threads were executing external code".

Here's the screenshot of error

• My json feed download code

   string url = "http://xamdev.epizy.com/getData1.php";
  
   public async void downloadJsonFeedAsync(String url) {
      var httpClient = new HttpClient();
      Task<string> contentsTask = httpClient.GetStringAsync(url);
  
      // await! control returns to the caller and the task continues to run on another thread
      string content = await contentsTask;
      Console.Out.WriteLine("Response Body: \r\n {0}", content);
  
      //Convert string to JSON object
      result = Newtonsoft.Json.JsonConvert.DeserializeObject<RootObject> (content);
  
      //Update listview
      RunOnUiThread (() => {
          listView.Adapter = new CusotmListAdapter(this, result.posts);
          progress.Visibility = ViewStates.Gone;
      });
  }
  

• i have got error at this line

  string content = await contentsTask;

• This is my json

  { "posts":[ { "id":"1", "url":"", "title":"Convert Speech to Text in Android Application", "date":"2017-06-16 06:15:18", "content":"Convert Speech to Tex Convert Speech to Text in Android Application Convert Speech to Text in Android Applicationt in Android Application", "thumbnail":"http:\/\/stacktips.com\/wp-content\/uploads\/2017\/01\/Speech-to-Text-in-Android-375x300.jpeg" } ] }

Please can anybody tell me whats wrong with my code ? Thanks in advance..

Here's my php webservice code-

<?php 

if($_SERVER['REQUEST_METHOD']=='GET'){

    require_once('conn.php');

    $sql = "SELECT * FROM space";


    if ($result = mysqli_query($conn, $sql))
     {
      $resultArray = array();
      $tempArray = array();


       while($row = $result->fetch_object())
       {

         $tempArray = $row;
          array_push($resultArray, $tempArray);
      }


    echo json_encode(array("result"=>$resultArray));
    }
        mysqli_close($conn);

     }
   ?>               

Solution 1

I'm surprised yet not best answer posted for this issue. For me above solutions didn't work. To resolve this issue, I'd to disable following option from debug menu.

Debug > Options > General > Uncheck "Enable Just My Code"

For more details, check microsoft msdn help.

Solution 2

You should be getting exception details and a call stack, which will greatly aid in your debugging efforts. I think this is a bug with Xamarin on VS2017 right now.

Solution 3

I ran across this error and looked in the output window after the application failed. In my case I had a method in a view model class with a "Task" that is invoked by the XMAL.