Hello, good night in the version, nor do I remember Android 8 or 9 forward, the reading of url is disabled. For that you must manually activate the activation.
You can make directly or create separate file below.
In the folder res /xml/network_security_config.xml
<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<base-config cleartextTrafficPermitted="true">
<trust-anchors>
<certificates src="system" />
</trust-anchors>
</base-config>
</network-security-config>
Modify in the ./AndroidManifest.xml file
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:networkSecurityConfig="@xml/network_security_config"> >agregar esta linea y compilar su proyecto