Views not loading after updating device to Android Pie 9.0

Question

I recently updated my phone to Android 9.0. The app which I was developing was working fine in earlier Android version. But after the update some views which require internet are not loading. Blank spaces are being displayed in their places.

It has a ViewPager as banner and 2 RecyclerView below categories and deals respectively. They all require internet to load data.

I don't know know if any extra permissions or dependencies are required in Android Pie.

The logs show

NetworkDispatcher.run: Unhandled exception java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference

Answer 1

Try these solutions

Solution 1)

Add this line in application tag in manifest file

android:usesCleartextTraffic="true"

like below

<application
            android:name=".ApplicationClass"
            android:usesCleartextTraffic="true"
            android:networkSecurityConfig="@xml/network_security_config"
            android:supportsRtl="true"
            android:theme="@style/AppTheme">

Add this tag in application tag in manifest file

Solution 2)

Add android:networkSecurityConfig="@xml/network_security_config" in application tag

<application
        android:name=".ApplicationClass"
        android:networkSecurityConfig="@xml/network_security_config"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

where network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true" />
</network-security-config>

Create xml under res directory and then network_security_config.xml in xml folder

For more info

https://developer.android.com/about/versions/pie/android-9.0-changes-28

Download Manger not working in Android Pie 9.0 (Xiaomi mi A2)