Volley Not making request on latest version of Android

This is because starting with Android P, any network traffic between your app and insecure destinations must be explicitly whitelisted. See Protecting users with TLS by default in Android P.

In your code, you're making a request to:

http://hellapunk.com/listallshows.php?id=2018

The http:// shows that the site is not secure. If you dig deeper into your LogCat you'll likely find a message such as:

com.android.volley.NoConnectionError: java.io.IOException: Cleartext HTTP traffic to hellapunk.com not permitted
    at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:177)
    at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:120)
    at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:87)
 Caused by: java.io.IOException: Cleartext HTTP traffic to hellapunk.com not permitted
    at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:115)
    at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:458)
    at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:407)
    at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:538)
    at com.android.volley.toolbox.HurlStack.executeRequest(HurlStack.java:99)
    at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:131)
    at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:120) 
    at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:87) 

Attempting it myself, it doesn't appear that the site supports https connections, so in order to reach this particular server from your application, you would need to whitelist the hellapunk.com domain manually.

In your resources directory, define an XML document for your network security configuration (e.g. res/xml/network_security_config.xml):

network_security_config.xml:

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <domain-config cleartextTrafficPermitted="true">
        <domain includeSubdomains="true">hellapunk.com</domain>
    </domain-config>
</network-security-config>

Then, in your AndroidManifest.xml for your application, in the <application> tag, add the attribute:

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

You should then be allowed to make insecure requests to any domain specified within that file.

It is working well in Pie Api 28

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>
</network-security-config>

AndroidManifest.xml

In the android manifest Application Tag, add these lines.

 android:networkSecurityConfig="@xml/network_security_config"
 android:usesCleartextTraffic="true"

Or you can use usesCleartextTraffic attribute under the application element in the android manifest. The default value in Android P is “false”.

<application
     android:usesCleartextTraffic="true"

</application>

but it requires minSdkVersion 23 or higher.