Why am I seeing net::ERR_CLEARTEXT_NOT_PERMITTED errors after upgrading to Cordova Android 8?

android, cordova

Solution

The default API level in the Cordova Android platform has been upgraded. On an Android 9 device, clear text communication is now disabled by default.

To allow clear text communication again, set the `android:usesCleartextTraffic` on your `application` tag to `true`:

<platform name="android">
  <edit-config file="app/src/main/AndroidManifest.xml" mode="merge" target="/manifest/application">
      <application android:usesCleartextTraffic="true" />
  </edit-config>
</platform>

As noted in the comments, if you have not defined the `android` XML namespace previously, you will receive an `error: unbound prefix` during build. This indicates that you need to add it to your `widget` tag in the same `config.xml`, like so:

<widget id="you-app-id" version="1.2.3"
xmlns="http://www.w3.org/ns/widgets" 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:cdv="http://cordova.apache.org/ns/1.0">

Problem

Original source

Related problems

• Android 8: Cleartext HTTP traffic not permitted
• Why is the error ERR_CLEARTEXT_NOT_PERMITTED with cleartext for the HTTP traffic persistent?
• Failed to load resource: net::ERR_CLEARTEXT_NOT_PERMITTED