How to implement voice and video calls in my apps [closed]

It's not a simple job when it comes to audio / video calls. (So much so that WhatsApp has implemented video calling). You can find more about SIP protocol on Android that is available on Android from the API level 9 .

An example call would be this snippet that defines the android.SipDemo.INCOMING_CALL action, which will be used by an intent filter when the device receives a call. See:

Intent intent = new Intent();
intent.setAction("android.SipDemo.INCOMING_CALL");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, Intent.FILL_IN_DATA);
mSipManager.open(mSipProfile, pendingIntent, null);

However, there are some open sourcing platforms that could very well help you with these features. It would be interesting to analyze each one making a decision that fits your needs better.

• Linphone
• Telegram
• Quickblox
• Doubango
• Whisper Systems

Read more about the SIP protocol at documentation .