###Screenshots
##How it works
This app has some steps to make. I'll write this below like I made.
I used shared preferences to save user's choice. This choices may be Listen / Not Listen so Phone Listener service will work with respect to this choice.The method getState(), checks users choice via shared preferences below.
private void getState()
{
if (sharedpreferences.contains(State))
{
state.setText(sharedpreferences.getString(State, ""));
durum = state.getText().toString();
if (durum.equals("Listening..."))
{
imgbtn.setImageResource(R.drawable.stop);
}
else
{
imgbtn.setImageResource(R.drawable.microphone);
}
}
else
{
durum = "false";
state.setText("Listening...");
imgbtn.setImageResource(R.drawable.microphone);
}
}
User clicks listen/not listen button (First Screenshot), and via this choice CallListener service will work or stop. Don't forget! You must save this choice with shared preferences to show to user next time.
Intent intent = new Intent(getActivity(), CallDetectService.class);
SharedPreferences.Editor editor = sharedpreferences.edit();
if (!durum.equals("Listening..."))
{
editor.putString(State, "Listening...");
state.setText("Listening...");
imgbtn.setImageResource(R.drawable.stop);
****getActivity().startService(intent)****;
}
else
{
editor.putString(State, "Not Listening...");
state.setText("Not Listening...");
imgbtn.setImageResource(R.drawable.microphone);
****getActivity().stopService(intent)*****;
}
In my application, after service started , service call some class CallHelper which has PhoneStateListener class to listen phone state. I considered three statement which is given below.
private class CallStateListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
/*HERE! PHONE IS RINGING!*/
break;
case TelephonyManager.CALL_STATE_IDLE:
/*PHONE IDLE*/
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
/*PHONE CALL ANSWERED*/
break;
}
}
}
The record will start after CALL_STATE_OFFHOOK but you must prepare something like FileName. It's completely optional. I wanted to save file with good name.So I created a method which works get incoming/outgoing phone number and finds name of this number at phone contacts and get CurrentDatetime and combine this two staffs.
private void prepareFileName(String incoming)
{
if (incoming.length() >= 11)/*Check the number is special or not (like 911)*/
{
getContactList(incoming);
}
else
{
NameofNum = incoming;
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss-SS");
String date = sdf.format(new Date());
FileName ="/"+ NameofNum + "|" + date + ".3gpp";
}
getContactList(String number) method is pretty long method. So I didn't write here. You can find it easily here CallHelper.java After this we have good,formatted filename. And let's start recording.
First, you need MediaRecorder object. After created some, you must set some parameters into him. This parameters,especially AudioSource!. This point is the main point of whole project. You have to set MediaRecorder.AudioSource.VOICE_CALL into setAudioSource() method.
public static String PATH = Environment.getExternalStorageDirectory().getAbsolutePath()+"/GorusmeKayitlari";
outputfilePath = PATH + FileName;
myAudioRecorder=new MediaRecorder();
myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);
myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
myAudioRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
myAudioRecorder.setOutputFile(outputfilePath);
try {
myAudioRecorder.prepare();
myAudioRecorder.start();
} catch (IOException e) {
e.printStackTrace();
}
So, your phone call recording now. if you want you can make notification . This is also completely optional. And you must stop recording after CALL_STATE_IDLE. But you must check your phone idle after phone call or normal state?.Last version of PhoneStateListener is below.
private class CallStateListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
prepareFileName(incomingNumber);
break;
case TelephonyManager.CALL_STATE_IDLE:
if (myAudioRecorder != null)
{
MakeNotification(false);
myAudioRecorder.stop();
myAudioRecorder.release();
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
MakeNotification(true);
record();
break;
}
}
}
Now, we have phone call records in sdcard path. You are free to what do you want to do with them. You can post them to dropbox via dropbox apis or post them to your server or you can store them in your local phone like I did.In my second tab Records List, you can see my records.These datas come from sd card folder. And here is a method to get them.
private ArrayList<String> GetFiles(String path)
{
ArrayList<String> arrayList = new ArrayList<>();
File file = new File(path);
files = file.listFiles();
if(files != null)
{
if (files.length == 0)
{
return null;
}
else
{
for (int i = 0; i < files.length;i++ )
{
arrayList.add(files[i].getName());
}
}
}
else
{
return null;
}
return arrayList;
}
Here is the last step.I created player activity to listen my records.There is only one important point and it is how to set your sound file to MediaPlayer.create() method. Example usage is below,
mediaPlayer = MediaPlayer.create(this, Uri.fromFile(**File**); You must set the file which you got the GetFiles method.
/*Start button click*/
mediaPlayer.start();
/*Pause button click*/
mediaPlayer.pause();
/*You must stop and free your mediaPlayer object when activity is destroying*/
@Override
protected void onDestroy() {
super.onDestroy();
mediaPlayer.reset();
mediaPlayer.stop();
}
Let me know if you have questions. Thanks