SmartWalkieOrg/VoicePing-Walkie-Talkie-AndroidSDK ? reverse-engineered prompt

Build me an Android walkie talkie feature that I can drop into a chat app.

I want a simple SDK and a small demo app that lets two or more users join the same channel, hold one button to talk, and hear instant voice messages from the others. It should connect to the VoicePing server, support reconnecting if the network drops, and work well on weak connections and mobile data. Please include a clean example screen with a big push to talk button, basic setup for user ID and company name, and clear instructions for integrating it into another app.

Make sure it works on newer Android versions too, including the foreground service and notification handling needed for background audio. If you need to look up current Android docs or best practices online, go ahead. Keep the code easy to understand and ready to run.