1. SSL Proxy/Charles + Android trouble

https://stackoverflow.com/questions/17823434/ssl-proxy-charles-and-android-trouble/31945622#31945622

2. Enable SSL Proxy for Nougat+

Update your AndroidManifest.xml application section with networkSecurityConfig.xml

<application android:name=”AppName” 
 android:icon=”@mipmap/ic_launcher” 
 android:label=”@string/app_name”    
 android:networkSecurityConfig=”@xml/network_security_config”>

Add network_security_config.xml file to your xml resource folder app/src/main/res/xml/network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
  <base-config>
    <trust-anchors>
      <certificates src="system" />
      <certificates src="user" />
    </trust-anchors>
  </base-config>

  <!-- For debug only -->
  <debug-overrides>
    <trust-anchors>
      <certificates src="system" />
      <certificates src="user" />
    </trust-anchors>
  </debug-overrides>
</network-security-config>