ionic app not working above android version 9 use below code

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<base-config cleartextTrafficPermitted="true">
  <trust-anchors>         
   <certificates src="system" /> 
 </trust-anchors></base-config>
    <domain-config cleartextTrafficPermitted="true">       
      <domain includeSubdomains="true">localhost</domain> 
  </domain-config>
</network-security-config>

in resources->android-xml file add above code.
add in config.xml file.

<edit-config file="app/src/main/AndroidManifest.xml" mode="merge"

target="/manifest/application"

xmlns:android="http://schemas.android.com/apk/res/android">

<application android:networkSecurityConfig="@xml/network_security_config" />

</edit-config>

<resource-file src="resources/android/xml/network_security_config.xml"

target="app/src/main/res/xml/network_security_config.xml" />