Question

So as the subject states I need to be able to answer a phone call programmatically in Android 4.0.3 on an HTC OneX. I have read several places that the MODIFY_PHONE_STATE permission has been revoked by Google so to do this task you need a work around.

I have looked into two avenues so far:

(1) Following Guy’s post here and using a BroadcastReceiver

(2) Using the following code to try and hit a key event through a shell command.

final Runtime r = Runtime.getRuntime();
    try {
        Process process = r.exec("input keyevent 5");
        InputStream stream = process.getErrorStream();
        log.v("Process Error Stream: " +stream.toString());
        log.v("Sending shell command to Answer Call");
    } catch (Exception e) {
        log.v("Stack Trace: " + e.getStackTrace().toString());
        e.printStackTrace();
    } 

I use this because keyevent 5 is KeyEvent.CALL according to Google and it works in adb using

adb shell input keyevent 5

My question is, what am I doing wrong? Because logically both of these methods makes sense but neither are working or even generating runtime errors of any kind.

Cheers

Answer 1

After days of research, I found that using both a broadcast receiver route and a runtime.exec() route it is simply not possible to answer a phone call in Android 4.0.3 using the Android API.

For those of you still wondering, I did find some useful information…You CAN answer a call through adb using the command adb shell input keyevent 5 5 is the key code for the call button and in Android it is the KEYEVENT_CALL