Fix pie cleartext error (fix #263)

app/src/main/AndroidManifest.xml

@@ -17,7 +17,8 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
-        android:name="app.insti.InstiAppApplication">
+        android:name="app.insti.InstiAppApplication"
+        android:networkSecurityConfig="@xml/network_security_config">
 
         <meta-data
             android:name="com.google.android.gms.version"

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">gymkhana.iitb.ac.in</domain>
+    </domain-config>
+</network-security-config>