How to solve the problem of weather data query failure?

Read the original article：How to solve the problem of weather data query failure?

Problem Description

Common scenarios where weather data queries fail and how to address them:

• When using weatherService to obtain weather information, error code 1011900001 is reported.
• A request for minute-by-minute precipitation forecasts, weather warnings, and tides is made, but no data is returned.

Background Knowledge

The Weather Service Kit can return the following weather data to meet developers' weather data usage needs: weather forecast, minute-level precipitation forecast, weather warning, weather index, astronomical data, and tides.

Troubleshooting Process

1. Check error meaning & configuration
   o Look up the meaning of the error code 1011900001.
   o Verify whether Weather Service capability and related permissions have been enabled on AppGallery Connect (AGC).
   o Confirm that the application signature (debug/release) is configured correctly in line with HarmonyOS requirements.

2. Check data availability for the request
   o If the request returns no data, verify real-world conditions:

   • Whether there was short-term precipitation in the area at the queried time.
   • Whether any weather warnings were active (or already lifted) for that area.
   • Whether there are tide stations in/near the queried area.

Analysis Conclusion

• 1011900001 indicates the Weather Service is not enabled or the application signature is incorrectly configured.
• If there is no short-term precipitation, no active weather warning (or the warning has been lifted), or no tide station near the queried area, it is expected for the API to return no data for those specific endpoints.

Solution

1. Enable services & configure signatures
   o Before development, complete the basic preparations and fingerprint configuration in App Development Preparation.
   o Enable Weather Service on AppGallery Connect.
   o Apply for and configure a debug signature according to the HarmonyOS app debugging process.
   o Before release, apply for and configure a formal (release) signature according to the HarmonyOS app release process.

2. Request location permissions (for current-location weather)
   o Retrieving weather data for the user's current location requires calling the location service and requesting appropriate location permissions.

3. Validate data availability
   o If the query area has no short-term precipitation, no active weather warnings, or no tide stations, receiving empty results is normal for those data types.

Verification Result

o After enabling the Weather Service and correcting signatures, calls to general weather endpoints should succeed without error 1011900001.

o For precipitation/warning/tide endpoints, test with:

• A time/location currently experiencing precipitation.
• A region with an active weather warning.
• An area near known tide stations.

o Confirm that valid requests now return data; otherwise, empty responses indicate no applicable phenomena at the queried time and place.

Written by Sefa Koyuncu