Hi @Alonso Chen
Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is related to Teams Development, which is not in our support scope. To better help you solve the problem, please add Teams Development tag to your post.The following suggestion is just for your reference:
There is a Walkie-Talkie SDK for Android app development. It’s called the VoicePing Android SDK. This SDK is provided by Smart Walkie Talkie and it enables Push-To-Talk (PTT) functionality for your Android project. It allows you to quickly add group voice broadcast capability to your app.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.