Not able to call REST API on Android, but it works with iOS and Web App

During the development of a recent mobile app, I was retrieving data using a rest api. The web app was working fine and displaying the data. When I deployed to the Android device, I was receiving no data and the following error when calling the api:

Error Code: 0

Message: Http Failure response for [rest api url]

0 Unknown Error

I then deployed to my iPhone and everything worked fine. I was pulling the data back fine and displaying the list of items.

Then I remembered that since this app (which is in beta) was accessing the api using http, not https. I know, I know…it’ll move to https eventually. So that meant I needed to add the following to the android platform entry in the config.xml.

<edit-config file="app/src/main/AndroidManifest.xml" mode="merge" target="/manifest/application" xmlns:android="http://schemas.android.com/apk/res/android">
   <application android:usesCleartextTraffic="true" />
</edit-config>

This tells Android it’s ok to access data over non-secure (cleartext) traffic.

But…that didn’t work either. That’s weird. Why not? I’ve seen it work just fine in the past, so it was odd.

Ugh. So what I decided to do was remove the android platform, then re-add it, and do a new android build.

Whammy! It works now. I still need the edit-config entry, but apparently, there was something wrong/weird with my previous build files.

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