ionic 4 app sends http request for android version 6,7 but gives an error saying CLEARTEXT http traffic (not permitted). I have trying to solve this by adding android:usesCleartextTraffic="true"
but ionic default is true for usesCleartextTraffic.

and also i tried to change url http to https. but nothing works for me.

so i solved this issue temporarily by adding

<domain includeSubdomains="true">localhost</domain> <domain includeSubdomains="true">YOUR-IP_ADDRESS</domain>

to my network_security_config.xml .

localhost for android version 6,7
YOUR_IP_ADDRESS for version 8,9

Please find the details below

added this in resources/android/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>
<domain-config cleartextTrafficPermitted="true">
<domain includeSubdomains="true">ourdomain.com</domain>
<domain includeSubdomains="true">subdomain.ourdomain.com</domain>
</domain-config>
</network-security-config>
2) added in config.xml <platform name="android">
allow-intent href="market:*" />
<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" />
<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" />

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <domain-config cleartextTrafficPermitted="true">
        <domain includeSubdomains="true">localhost</domain>
         <domain includeSubdomains="true">abcd.com</domain>
    </domain-config>
</network-security-config>
Try with this code use your domain in abcd.com , do not change the localhost
              
I am working on ionic 5 using capacitor. I tried to call an Larvel api from localhost but am getting this error
First I  got the below error

There was an error with the request: Cleartext HTTP traffic to localhost not permitted ionic
Fixed doing below in AndroidManifest.xml
<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme"
    android:usesCleartextTraffic="true">
Error changes

There was an error with the request: Failed to connect to localhost/127.0.0.1:80
I did not see any file in ionic 5 with the name:

network_security_config
Ionic Info:
Ionic CLI                     : 6.11.11 (C:\Users\Ahmad Raza Mughal\AppData\Roaming\npm\node_modules@ionic\cli)

Ionic Framework               : @ionic/angular 5.3.5

@angular-devkit/build-angular : 0.1000.8

@angular-devkit/schematics    : 10.0.8

@angular/cli                  : 10.0.8

@ionic/angular-toolkit        : 2.3.3
Capacitor:
Capacitor CLI   : 2.4.2

@capacitor/core : 2.4.2
Utility:
cordova-res : 0.14.0

native-run  : 1.0.0
System:
NodeJS : v12.16.2 (C:\Program Files\nodejs\node.exe)

npm    : 6.14.4

OS     : Windows 10
Please help with the above?
Thanks