Using telephony functionality from Android app

Question

I am just getting started developing my first Android app, and one function that I need the app to do is to be able to place a voice call and play a recording into the call.

I have been looking all over the place and I cannot find the ability to do this in the Android SDK. I do see there is com.android.internal.telephony which does seem to offer the ability but I also read that apps are not supposed to use this because it is not part of the SDK.

Am I understanding things correctly that there is no way for an Android app to be able to do this (make an actual voice call)? Any help would be appreciated.

Answer 1

You should read up on intents. The specific intent that you're looking for in this case is Intent.ACTION_CALL. For this intent to work you have to put <uses-permission android:name="android.permission.CALL_PHONE" /> into the applications AndroidManifest.xml.

It is not possible to play sounds during conversations. See this topic from the Android Developers web site for more details.

Answer 2

Use smth like this:

Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "+1-800-1234567"));
        activity.startActivity(intent);

And do not forget to declare aforementioned permission "android.permission.CALL_PHONE"