I've rooted Nexus phone with lollipop. I'm trying to record incoming & outgoing calls.
My application extends DeviceAdminReceiver with policy of <force-lock />
I'm able to create the file with size > 0bytes. But when I play it, it is blank.
Please take a look at the code below:
Manifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.STORAGE" />
.....
<service android:name=".RCService"
android:exported="false" >
</service>
.....
<receiver
android:name=".utils.MyDeviceAdminReceiver"
android:permission="android.permission.BIND_DEVICE_ADMIN" >
<intent-filter>
<!-- This action is required -->
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
<action android:name="android.app.action.DEVICE_ADMIN_DISABLED" />
<action android:name="android.app.action.DEVICE_ADMIN_DISABLE_REQUESTED" />
</intent-filter>
<!-- This is required this receiver to become device admin component. -->
<meta-data
android:name="android.app.device_admin"
android:resource="@xml/device_admin" />
</receiver>
<receiver android:name=".CallRecoderBroadcast">
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
device_admin.xml
<device-admin xmlns:android="http://schemas.android.com/apk/res/android" >
<uses-policies>
<force-lock />
</uses-policies>
</device-admin>
CallRecoderBroadcast.java
/**
* Lifecycle :
* Incoming call : RINGING -> OFFHOOK -> IDLE
* Outgoing Call : OFFHOOK -> IDLE
*/
public class CallRecoderBroadcast extends BroadcastReceiver {
private static final String TAG = "CallRecoderBroadcast";
private static final String ACTION_PHONE = "android.intent.action.PHONE_STATE";
private static final String OUTGOING_CALL = "android.intent.action.NEW_OUTGOING_CALL";
private static Boolean mCallOnGoing = Boolean.FALSE;
private MediaRecorder mRecorder = new MediaRecorder();
// private File mFile = null;
private String mNumber;
@Override
public void onReceive(Context context, Intent intent) {
try {
if (intent.getAction().equals(ACTION_PHONE)) {
Bundle bundle = intent.getExtras();
String state = bundle.getString(TelephonyManager.EXTRA_STATE);
Log.e(TAG, state);
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
Log.e(TAG, bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER));
mNumber = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
} else if (state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {
if (!mCallOnGoing) {
recordCall(context);
}
} else if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {
if (mCallOnGoing) {
stopRecording();
}
}
} else if (intent.getAction().equals(OUTGOING_CALL)) {
Log.e(TAG, "OUTGOING cALL");
Log.e(TAG, intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER));
mNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
}
} catch (Exception exception) {
exception.printStackTrace();
}
}
private void recordCall(Context context) throws IOException, CustomExcpetion {
File file = prepareFile(context);
if (file.exists()) {
mCallOnGoing = Boolean.TRUE;
mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mRecorder.setOutputFile(file.getAbsolutePath());
mRecorder.prepare();
mRecorder.start();
}
}
private void stopRecording() {
mCallOnGoing = Boolean.FALSE;
// mRecorder.stop();
mRecorder.release();
}
private File prepareFile(Context context) throws CustomExcpetion {
File outputFile = null;
try {
File dir = new File(context.getFilesDir(), "recorderdFiles");
if (!dir.exists()) {
dir.mkdirs();
}
Long timeStamp = System.currentTimeMillis();
outputFile = new File(dir, timeStamp.toString());
if (!outputFile.exists()) {
outputFile.createNewFile();
}
} catch (IOException exp) {
throw new CustomExcpetion(context, exp);
}
return outputFile;
}
}
P.S. - I've also tried with example given here, but it only working form Mic & not for uplink & downlink at the same time.
