I’m working on an Android app where I need to fetch data from a REST API. The API call is working fine and the response contains all the expected data based on my logs. However, I am having difficulty getting this information to display in my TextView widget.
The JSON response should be parsed and visible to the user. My service class handles the HTTP request correctly and completes the network call without any errors. However, the TextView remains blank despite the data being present.
Has anyone experienced a similar problem where the API response is successful, yet the UI doesn’t reflect the changes? Could this possibly be a threading issue or am I missing something in how I assign the text to the view? Any advice on what might be going wrong would be greatly appreciated.
totally agree, it’s all about the main thread! use runOnUiThread() to update your TextView, or else it won’t show the data. happened to me too, super frustrating!
Check if your TextView is actually getting initialized before setting the text. I hit this same issue when findViewById returned null because I called it before setContentView. Another gotcha - the TextView reference can go out of scope between your API call and the callback. Keep a proper reference to your TextView through the whole async operation. Also make sure your activity isn’t getting destroyed and recreated during the network call - this kills the TextView reference even if the response comes back fine.
Had this exact same issue! It’s a timing problem with your API callback. You need to update the TextView inside the success callback method, not outside it. The network call is asynchronous - if you set the text right after making the request, the response hasn’t come back yet. Also check you’re calling setText() on the right TextView reference. I once wasted hours debugging only to realize I was updating a completely different view. And make sure your JSON parsing is actually grabbing the right field from the response.