responseCode != 200, weatherData symbol "--"?

7643321 25 days ago

Good day, I want to ask how to easily solve when I don't get the requested data, that means responseCode = 200, so e.g. will I have the symbol "--" for the current temperature? I'm currently doing it this way, but I have no idea if it's correct for watch memory for example?

Thanks for the advice and tips.

private var _temp = "--" as String;

function OWM_Update(responseCode as Number, data as Dictionary or String or Null) as Void {
	
    if (responseCode != 200) 
    {
      System.println("NO WEATHER DATA");
      backgroundData["Temp"] = _temp;
	  
	  Background.exit(backgroundData);
    } else 
    {
    System.println("WEATHER DATA OK");
    backgroundData["Temp"] = ((data as Dictionary)["main"] as Dictionary)["temp"]as Number;
      
   Background.exit(backgroundData);
    }
     }

Top Replies

FlowState 23 days ago in reply to FlowState +1

Here's one way to fix your code (I'm assuming that you only care about temperature, as suggested by the existing code).

https://pastebin.com/awqAGfpS

All Replies

jim_m_58 25 days ago

Add a println to onBackgroundData to see the data it's passed.

It's easy to force an error in the sim by going to "Settings>Connection Type>BLE" and setting it to "Not Connected"

I don't see where you are using "data" or where you are setting "backgroundData". For a non-200, data will likely be null and if that's returned in Background.exit(), onBackgroundData won't be called.

7643321 24 days ago in reply to jim_m_58

For me, it's about the fact that if "BLE" is not connected, for example, I want the value "--" to be returned to me on the data. The question was, is this solution correct?

Here is the code for onBackgroundData(data):

7643321 24 days ago in reply to 7643321

function onBackgroundData(data) {

var weather = data as Dictionary?;

var temperature = weather["main"] as Dictionary;

if (data != null) {
Application.Storage.setValue("temperature", temperature["temp"] as Numeric);
}
}

}

jim_m_58 24 days ago in reply to 7643321

What do you see if you add

System.println(data);

at the very top of onBackgroundData?

7643321 24 days ago in reply to jim_m_58

i see this:

System.println("Synchronize "+ dataInput);
Background: getServiceDelegate: 13:34
Background: WEATHER DATA OK
Synchronize {Temp=>-8.990000}

As I wrote, they need to make it so that if I don't get (responseCode == 200), then on the next refresh: onBackgroundData(data) will appear next to the data on my watch, for example the symbol "- - " And I wonder if it should have done this well, or is there something simpler?

jim_m_58 24 days ago in reply to 7643321

Here is what I dp for OWM in a background service/

In the callback for the makeWebRequest, I have this:

		function receiveWeather(responseCode, data) {
			if(responseCode==200) {
				Background.exit(data);
			}
			else {Background.exit(responseCode);}
		}

Then in the main app, onBackgroundData looks like this:

    function onBackgroundData(data) {
    	if(data instanceof Number) {
    		commStat=data;
    	} else {
        	commStat=200;
        	Application.Storage.setValue("OWMData", data);
        }
        Application.Storage.setValue("OWMStatus, commStat);
        
        WatchUi.requestUpdate();
    }

7643321 23 days ago in reply to jim_m_58

Hi, thanks for the example, but when I try to import it and modify it according to my code, it doesn't work very well. Could you please make a sample so I know where to put the weather data and how to call it?

Thank you

function receiveWeather(responseCode, data) {
			if(responseCode==200) {
				Background.exit(data);
			}
			else {Background.exit(responseCode);}
		}
		



where should I put, for example, this?

"temp" => data["main"]["temp"],

OR 

_rec["Temp"] = ((data as Dictionary)["main"] as Dictionary)["temp"]as Number;

what is meant by OWMStatus ?

jim_m_58 23 days ago in reply to 7643321

"OWMStatus" is the key used by Storage.setValue for how I save the status.

Again, just put a println at the beginning of onBackgroundData. Don't include your code in receiveWeather.

Then in the watchface, you decide what to do if the status wasn't 200. You may want to show the last known temperature in red instead of "--" for example.

7643321 23 days ago in reply to jim_m_58

so should I understand that I will call the weather data via function onBackgroundData(data)?

jim_m_58 23 days ago in reply to 7643321

That's now you get the weather data from the background service.