Develop Reference

How to route default audio to ear piece when headphones are connected?

I am developing an app in which we need to use the headphone jack as a button only.
Requirement : Play the default audio (calling) via earpiece when headsets are connected (no need of audio through headphones)
There are many example of routing audio through speaker and headphones and also bluetooth headsets but nothing about routing the audio through ear speakers of devices if headsets are connected.
I have tried a lot and some links are
Android : Force audio routing (not working in my scenario)
I have checked SoundAbout(https://play.google.com/store/apps/details?id=com.woodslink.android.wiredheadphoneroutingfix&hl=en)
app and it is routing the audio to various port like headset, speakers and earpieces.
I have got audio to speakers if headsets are connected:
Here is my code
if (Build.VERSION.SDK_INT >= 21) {
ForegroundService.audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
ForegroundService.audioManager.setSpeakerphoneOn(true);
SplashScreen.preferences.edit().putBoolean("isKey", true).commit();
} else {
Class audioSystemClass = null;
try {
audioSystemClass = Class.forName("android.media.AudioSystem");
Method setForceUse = audioSystemClass.getMethod("setForceUse", int.class, int.class);
setForceUse.invoke(null, FOR_MEDIA, FORCE_SPEAKER);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
SplashScreen.preferences.edit().putBoolean("isKey", true).commit();
ForegroundService.audioManager.setSpeakerphoneOn(true);
}

The earpiece is never used for media in Android, and it can only be used if the phone is in "call" or "communication" (VoIP) state.
I guess you have noticed that there is no "FORCE_EARPIECE" constant, so it can't be specified in a call to setForceUse.
Also, the earpiece has the lowest priority in output device selection for calls, so if the phone has anything connected to it (and in your case there is a fake headset), that device will be selected (see https://android.googlesource.com/platform/frameworks/av/+/322b4d2/services/audiopolicy/enginedefault/src/Engine.cpp#381).
Sorry, it doesn't seem to be possible to achieve what you intend.
UPDATE
After examining media.audio_policy state while SoundAbout is enforcing the use of earpiece for media, I have discovered the following tricks that this app uses:
It calls AudioSystem.setPhoneState(MODE_IN_COMMUNICATION) for enforcing "communication" phone state (usually used for VoIP calls).
If a headset (or headphones) is connected, in order to prevent the sound to be routed to it due to higher priority, the app calls AudioSystem.setDeviceConnectionState(DEVICE_OUT_WIRED_HEADSET, DEVICE_STATE_UNAVAILABLE, ...) to trick Audio Manager to believe that there is no headset.
These are all hacks and require the app to monitor the phone state closely. It also doesn't work all the time.
Another drawback is that using earpiece disable on-chip audio decompression and thus has higher battery use.
In general, I wouldn't recommend using these techniques.

After researching a lot, I found it out that there is not any way to achieve this funtionality without using reflection.
First you need to put headset jack in and then call the method setWiredDeviceConnectionState() with suitable parameters then it behave like the headphone are disconnected but click works still.
So it is a hack but as per my requirement, it's not a foolproof solution but working for now.
Here is my code to do this,
private void sendIntent(Intent i) {
Method m;
Log.i(TAG, "Device sdk = " + Build.VERSION.SDK_INT);
try {
if (Build.VERSION.SDK_INT < 16) {
Class<?> clazz = Class.forName("android.app.ActivityManagerNative");
m = clazz.getMethod("broadcastStickyIntent", Intent.class, String.class);
m.setAccessible(true);
m.invoke(clazz, i, null);
return;
} else if (Build.VERSION.SDK_INT < 23) {
//int type, int state, String address, String name
m = am.getClass().getMethod("setWiredDeviceConnectionState", Integer.TYPE, Integer.TYPE, String.class);
m.setAccessible(true);
Object[] objArr = new Object[3];
objArr[0] = (i.getIntExtra("microphone", 0) == 0) ? 8 : 4;
objArr[1] = i.getIntExtra("state", 0);
objArr[2] = i.getStringExtra("name");
m.invoke(am, objArr);
} else {
//int type, int state, String address, String name
m = am.getClass().getMethod("setWiredDeviceConnectionState", Integer.TYPE, Integer.TYPE, String.class, String.class);
m.setAccessible(true);
Object[] objArr = new Object[4];
objArr[0] = (i.getIntExtra("microphone", 0) == 0) ? 8 : 4;
objArr[1] = i.getIntExtra("state", 0);
objArr[2] = i.getStringExtra("address");
objArr[3] = i.getStringExtra("name");
m.invoke(am, objArr);
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
the intent to send :
#TargetApi(Build.VERSION_CODES.M)
public class HeadSetJackReciever extends AudioDeviceCallback {
public static boolean isAudioChecked;
public void onAudioDevicesAdded(AudioDeviceInfo[] addedDevices) {
if (addedDevices.length != 0) {
for (int i = 0; i < addedDevices.length; i++) {
if (addedDevices[i].getType() == AudioDeviceInfo.TYPE_WIRED_HEADSET) {
AudioDeviceInfo audioDeviceInfo = addedDevices[i];
int microphone = audioDeviceInfo.getType();
String headsetName = "DCS";
String headsetAddress = "";
try {
Method method = audioDeviceInfo.getClass().getMethod("getAddress");
method.setAccessible(true);
headsetAddress = (String) method.invoke(audioDeviceInfo);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
Log.e("TEST", "microphone:"+microphone);
Log.e("TEST", "headsetName:"+headsetName);
Log.e("TEST", "headsetAddress:"+headsetAddress );
Intent intent = new Intent(ForegroundService.context, SelectAudioOutput.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra("microphone",microphone);
intent.putExtra("headsetName",headsetName);
intent.putExtra("headsetAddress",headsetAddress);
ForegroundService.context.startActivity(intent);
}
}
}
}
public void onAudioDevicesRemoved(AudioDeviceInfo[] removedDevices) {
if (removedDevices.length != 0) {
Log.e("TEST", "Audio deinserted");
if (SplashScreen.preferences.getBoolean("isKey", false)) {
Intent startIntent = new Intent(ForegroundService.context, ForegroundService.class);
startIntent.setAction(Constants.ACTION.STARTNOTIFICATION_ACTION);
ForegroundService.context.startService(startIntent);
} else {
Intent startIntent = new Intent(ForegroundService.context, ForegroundService.class);
startIntent.setAction(Constants.ACTION.STOPNOTIFICATION_ACTION);
ForegroundService.context.startService(startIntent);
}
ForegroundService.audioManager.setMode(AudioManager.MODE_IN_CALL);
ForegroundService.audioManager.setSpeakerphoneOn(false);
}
}
}
for Lollipop and lower versions :
if (intent.getAction().equals(Intent.ACTION_HEADSET_PLUG)) {
headsetName = intent.getStringExtra("name");
microphone = intent.getIntExtra("microphone", 0);
int state = intent.getIntExtra("state", -1);
switch (state) {
case 0:
Log.d("onReceive", "Headset unplugged");
Log.e("TEST", "Audio deinserted");
if (SplashScreen.preferences.getBoolean("isKey", false)) {
Intent startIntent = new Intent(ForegroundService.context, ForegroundService.class);
startIntent.setAction(Constants.ACTION.STARTNOTIFICATION_ACTION);
context.startService(startIntent);
} else {
Intent startIntent = new Intent(ForegroundService.context, ForegroundService.class);
startIntent.setAction(Constants.ACTION.STOPNOTIFICATION_ACTION);
context.startService(startIntent);
}
ForegroundService.audioManager.setMode(AudioManager.MODE_IN_CALL);
ForegroundService.audioManager.setSpeakerphoneOn(false);
break;
case 1:
Log.d("onReceive", "Headset plugged");
Log.e("TEST", "microphone:"+microphone);
Log.e("TEST", "headsetName:"+headsetName);
Log.e("TEST", "headsetAddress:"+headsetAddress );
Intent intentone = new Intent(ForegroundService.context, SelectAudioOutput.class);
intentone.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intentone.putExtra("microphone",microphone);
intentone.putExtra("headsetName",headsetName);
intentone.putExtra("headsetAddress",headsetAddress);
context.startActivity(intentone);
break;
}
}
Let me know if I miss something.
Thanks.

BroadcastReceiver is not listening the phone state - Unfortunately stopped when app is not in use

I have done the call recording in my application and am calling one Activity when the phone is in Ringing state.In that Activity just am showing the phone number and person name. For that I have written the code in my class which it extends BroadcastReceiver.
This scenario is working fine when I use the application. But If I close the application then am getting Unfortunately stopped
This is my AndroidManifest.xml.
<receiver android:name="com.domyhome.broadcastreceiver.IncomingCallInterceptor" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
This is my onRecive method. When am using my application If i get a call then the current activity is not going to the background. So I have written the code to finish the Activity.
#Override
public void onReceive(Context context, Intent intent) {
LoginActivity.login.finish();
MainActivity.main.finish();
telephonyRegister(context,intent);
}
This is the functionality. I'am calling the ProjectDailogActivity when the phone state is Ringing. I'am finishing the same Activity when the call is attended or ended.
public void telephonyRegister(final Context context, Intent intent)
{
TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
ctx=context;
if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
TelephonyManager.EXTRA_STATE_IDLE)) {
try
{
ProjectDailogActivity.projdialog.finish();
}catch(Exception e)
{
e.printStackTrace();
}
if(ring==true&&callReceived==false)
{
Toast.makeText(context, "THIS IS MISSED CALL FROM"+phoneNumber, Toast.LENGTH_LONG).show();
String smsmessage = "Thanks for contacting us. We will get back you soon";
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNumber, null, "Dear Customer!"+" "+smsmessage, null, null);
Log.i("sms",smsmessage);
Toast.makeText(context, "SMS sent.",
Toast.LENGTH_LONG).show();
callReceived=false;
}
else if(callReceived==true)
{
try
{
ProjectDailogActivity.projdialog.finish();
}catch(Exception e)
{
e.printStackTrace();
}
if(Conntact.isAvailable(phoneNumber))
{
try{
myAudioRecorder.release();
myAudioRecorder.stop();
myAudioRecorder = null;
}
catch(Exception e)
{
System.out.print("error");
}
Toast.makeText(context,"Recording Stopped", Toast.LENGTH_SHORT).show();
}
}
}
else if(intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
TelephonyManager.EXTRA_STATE_OFFHOOK))
{
try{
ProjectDailogActivity.projdialog.finish();
}catch(Exception e)
{
e.printStackTrace();
}
dir = Environment.getExternalStorageDirectory();
try {
file = File.createTempFile("sound", ".mp3", dir);
} catch (IOException e) {
e.printStackTrace();
return;
}
myAudioRecorder = new MediaRecorder();
myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
myAudioRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
myAudioRecorder.setOutputFile(file.getAbsolutePath());
if(Conntact.isAvailable(phoneNumber))
{
callReceived = true;
ring=false;
try {
myAudioRecorder.prepare();
myAudioRecorder.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(context, "recording started", Toast.LENGTH_SHORT).show();
}
else
{
}
}
else if(intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
TelephonyManager.EXTRA_STATE_RINGING)){
phoneNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
ring = true;
System.out.println("phonenum"+Conntact.isAvailable(phoneNumber));
if(!Conntact.isAvailable(phoneNumber))
{
Toast.makeText(ctx, phoneNumber+"not available", Toast.LENGTH_SHORT).show();
}
else if(Conntact.isAvailable(phoneNumber))
{
Intent intent11 = new Intent(ctx,ProjectDailogActivity.class);
intent11.putExtra("incoming_number",phoneNumber);
intent11.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
ctx.startActivity(intent11);
}
}
}
Conntact is a table where already some numbers has been stored. So when I get a call just am checking whether the calling number is available in the Conntact table.
If it is available then show the ProjectDailogActivity. If the number is available and the call is also picked means then do the recording. Everything is working fine . But it shows Unfortunately stopped when my app is not in use.

Consider unregistering for broadcast events while quitting from your app,Click here for a SO answer on same issue

How to programmatically answer/end a call in Android 4.1?

I am writing an android app in which I need to answer an incoming call, do some work and then end the call.
After all the Googling I could find two different ways to achieve this both of which do not work with recent versions of Android, specifically after 4.1, Jelly Bean.
I.) Access "com.android.internal.telephony.ITelephony" using Java Reflection in the Broadcast receiver for "android.intent.action.PHONE_STATE". Below sample code can be found in hundreds of related post:
public class PhoneCallReceiver extends BroadcastReceiver {
Context context = null;
private static final String TAG = "Phone call";
private ITelephony telephonyService;
#Override
public void onReceive(Context context, Intent intent) {
if (!intent.getAction().equals("android.intent.action.PHONE_STATE"))
return;
Log.v(TAG, "Receving....");
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
try {
Log.v(TAG, "Get getTeleService...");
Class c = Class.forName(telephony.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
telephonyService = (ITelephony) m.invoke(telephony);
telephonyService.silenceRinger();
Log.v(TAG, "Answering Call now...");
telephonyService.answerRingingCall();
Log.v(TAG, "Call answered...");
//telephonyService.endCall();
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG,
"FATAL ERROR: could not connect to telephony subsystem");
Log.e(TAG, "Exception object: " + e);
}
}
}
The problem with this code is that
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
is required for this method to work, and this permission has been defined as "for system apps only" from android v 2.3. In short, normal user apps can not define this permission in the manifest file anymore.
II.) Another way is to simulate pushing of the Headset hook which makes Android answer the call. This is done by broadcasting the "Intent.ACTION_MEDIA_BUTTON" as shown in below code.
public class PhoneCallReceiver extends BroadcastReceiver {
Context context = null;
private static final String TAG = "Phone call";
#Override
public void onReceive(Context context, Intent intent) {
if (!intent.getAction().equals("android.intent.action.PHONE_STATE"))
return;
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
String number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
Intent answer = new Intent(Intent.ACTION_MEDIA_BUTTON);
answer.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
context.sendOrderedBroadcast(answer, null);
Log.d(TAG, "Answered incoming call from: " + number);
}
return;
}
}
This method works till Android 4.1 after which android has restricted user apps from broadcasting "Intent.ACTION_MEDIA_BUTTON".
So my conclusion is that currently there is no way how we can achieve this in Android 4.1 or later.
Has anybody else found any other solution or workaround to this problem?

This works from Android 2.2 to 4.0 and now after adding the try catch to the last line it works for 4.1.2 and 4.2 Frankly speaking dont know how it works but it works for me.
Log.d(tag, "InSecond Method Ans Call");
// froyo and beyond trigger on buttonUp instead of buttonDown
Intent buttonUp = new Intent(Intent.ACTION_MEDIA_BUTTON);
buttonUp.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
sendOrderedBroadcast(buttonUp, "android.permission.CALL_PRIVILEGED");
Intent headSetUnPluggedintent = new Intent(Intent.ACTION_HEADSET_PLUG);
headSetUnPluggedintent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
headSetUnPluggedintent.putExtra("state", 0);
headSetUnPluggedintent.putExtra("name", "Headset");
try {
sendOrderedBroadcast(headSetUnPluggedintent, null);
} catch (Exception e) {
e.printStackTrace();
}
This is working for me in Android 4.1.2 as well as i have tested on 4.2
This still gives an exception which is handled.
Edit for End Call
Hope this helps all the people looking for total solution for answer and end call.
/**
* Reject button click listener will reject the incoming call.
*/
private class RejectCallOnClickListener implements OnClickListener {
#Override
public void onClick(View v) {
Log.d(tag, "OnRejectButton: " + "Reject OnClick");
ignoreCall();
exitCleanly();
}
}
/**
* ignore incoming calls
*/
private void ignoreCall() {
if (USE_ITELEPHONY)
ignoreCallAidl();
else
ignoreCallPackageRestart();
}
/**
* AIDL/ITelephony technique for ignoring calls
*/
private void ignoreCallAidl() {
try {
// telephonyService.silenceRinger();
telephonyService.endCall();
} catch (RemoteException e) {
e.printStackTrace();
Log.d(tag, "ignoreCall: " + "Error: " + e.getMessage());
} catch (Exception e) {
e.printStackTrace();
Log.d(tag, "ignoreCall" + "Error: " + e.getMessage());
}
}
/**
* package restart technique for ignoring calls
*/
private void ignoreCallPackageRestart() {
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
am.restartPackage("com.android.providers.telephony");
am.restartPackage("com.android.phone");
}
/**
* cleanup and exit routine
*/
private void exitCleanly() {
unHookReceiver();
this.finish();
}

My application has been using the following code to answer the phone for about 6 months:
Intent i = new Intent(Intent.ACTION_MEDIA_BUTTON);
i.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP,
KeyEvent.KEYCODE_HEADSETHOOK));
context.sendOrderedBroadcast(i, null);
I have tested this on Android Versions from 2.2 to 4.2.2. I have not seen a SecurityException broadcasting "Intent.ACTION_MEDIA_BUTTON" in my testing n a 4.2.2 device, nor have I seen crash reports from the Play Store indicating such exceptions are occurring.
I will say that this does not always work. It does not work on HTC devices due to the fact that HTC devices have a HeadsetObeserver that listen for the actually plugging in of a wired headset. Without this event, which it is currently a SecurityException for a third party app to broadcast, the HeadsetHook KeyEvent goes ignored.
The previous answers are misleading. The following code block does nothing:
Intent headSetUnPluggedintent = new Intent(Intent.ACTION_HEADSET_PLUG);
headSetUnPluggedintent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
headSetUnPluggedintent.putExtra("state", 0);
headSetUnPluggedintent.putExtra("name", "Headset");
try {
sendOrderedBroadcast(headSetUnPluggedintent, null);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
except generate a SecurityException and catch it.
In the other answers where the code works, it is because of the KeyEvent.KEYCODE_HEADSETHOOK being broadcast.

Try this
Answer for end the call using pro grammatically. Its working fine for me.
try {
String serviceManagerName = "android.os.ServiceManager";
String serviceManagerNativeName = "android.os.ServiceManagerNative";
String telephonyName = "com.android.internal.telephony.ITelephony";
Class telephonyClass;
Class telephonyStubClass;
Class serviceManagerClass;
Class serviceManagerStubClass;
Class serviceManagerNativeClass;
Class serviceManagerNativeStubClass;
Method telephonyCall;
Method telephonyEndCall;
Method telephonyAnswerCall;
Method getDefault;
Method[] temps;
Constructor[] serviceManagerConstructor;
// Method getService;
Object telephonyObject;
Object serviceManagerObject;
telephonyClass = Class.forName(telephonyName);
telephonyStubClass = telephonyClass.getClasses()[0];
serviceManagerClass = Class.forName(serviceManagerName);
serviceManagerNativeClass = Class.forName(serviceManagerNativeName);
Method getService = // getDefaults[29];
serviceManagerClass.getMethod("getService", String.class);
Method tempInterfaceMethod = serviceManagerNativeClass.getMethod(
"asInterface", IBinder.class);
Binder tmpBinder = new Binder();
tmpBinder.attachInterface(null, "fake");
serviceManagerObject = tempInterfaceMethod.invoke(null, tmpBinder);
IBinder retbinder = (IBinder) getService.invoke(serviceManagerObject, "phone");
Method serviceMethod = telephonyStubClass.getMethod("asInterface", IBinder.class);
telephonyObject = serviceMethod.invoke(null, retbinder);
//telephonyCall = telephonyClass.getMethod("call", String.class);
telephonyEndCall = telephonyClass.getMethod("endCall");
//telephonyAnswerCall = telephonyClass.getMethod("answerRingingCall");
telephonyEndCall.invoke(telephonyObject);
} catch (Exception e) {
e.printStackTrace();
Log.error(DialerActivity.this,
"FATAL ERROR: could not connect to telephony subsystem");
Log.error(DialerActivity.this, "Exception object: " + e);
}

As a conclusion to this thread, here is the code that works for me for Android 4.2.2.
--> Call is answered by simulating push of headset hook and keeping the broadcast in try-catch as mentioned by #PravinDodia in abouve thread. (Observe that an exception is thrown and handled in catch and the call is answered anyway. So I guess we can just ignore this exception and continue living life as if nothing happened! )
--> Call is disconnected using ITelephony.
public class PhoneCallReceiver extends BroadcastReceiver {
Context context = null;
private static final String TAG = "Phone call";
#Override
public void onReceive(Context context, Intent intent) {
if (!intent.getAction().equals("android.intent.action.PHONE_STATE"))
return;
else {
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
answerPhoneHeadsethook(context, intent);
return;
}
else if(state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)){
Log.d(TAG, "CALL ANSWERED NOW!!");
try {
synchronized(this) {
Log.d(TAG, "Waiting for 10 sec ");
this.wait(10000);
}
}
catch(Exception e) {
Log.d(TAG, "Exception while waiting !!");
e.printStackTrace();
}
disconnectPhoneItelephony(context);
return;
}
else {
Log.d(TAG, "ALL DONE ...... !!");
}
}
}
public void answerPhoneHeadsethook(Context context, Intent intent) {
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
String number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
Log.d(TAG, "Incoming call from: " + number);
Intent buttonUp = new Intent(Intent.ACTION_MEDIA_BUTTON);
buttonUp.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
try {
context.sendOrderedBroadcast(buttonUp, "android.permission.CALL_PRIVILEGED");
Log.d(TAG, "ACTION_MEDIA_BUTTON broadcasted...");
}
catch (Exception e) {
Log.d(TAG, "Catch block of ACTION_MEDIA_BUTTON broadcast !");
}
Intent headSetUnPluggedintent = new Intent(Intent.ACTION_HEADSET_PLUG);
headSetUnPluggedintent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
headSetUnPluggedintent.putExtra("state", 1); // 0 = unplugged 1 = Headset with microphone 2 = Headset without microphone
headSetUnPluggedintent.putExtra("name", "Headset");
// TODO: Should we require a permission?
try {
context.sendOrderedBroadcast(headSetUnPluggedintent, null);
Log.d(TAG, "ACTION_HEADSET_PLUG broadcasted ...");
}
catch (Exception e) {
// TODO Auto-generated catch block
//e.printStackTrace();
Log.d(TAG, "Catch block of ACTION_HEADSET_PLUG broadcast");
Log.d(TAG, "Call Answered From Catch Block !!");
}
Log.d(TAG, "Answered incoming call from: " + number);
}
Log.d(TAG, "Call Answered using headsethook");
}
public static void disconnectPhoneItelephony(Context context) {
ITelephony telephonyService;
Log.v(TAG, "Now disconnecting using ITelephony....");
TelephonyManager telephony = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
try {
Log.v(TAG, "Get getTeleService...");
Class c = Class.forName(telephony.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
telephonyService = (ITelephony) m.invoke(telephony);
//telephonyService.silenceRinger();
Log.v(TAG, "Disconnecting Call now...");
//telephonyService.answerRingingCall();
//telephonyService.endcall();
Log.v(TAG, "Call disconnected...");
telephonyService.endCall();
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG,
"FATAL ERROR: could not connect to telephony subsystem");
Log.e(TAG, "Exception object: " + e);
}
}
}
At least the disconnect functionality works and we know how it works. So those who want to develop a Call Barring application can go ahead.
For those like me who want to answer a call, I guess we can use this for now and only hope that it does not stop working in the next version.

Try this :
Intent buttonDown = new Intent(Intent.ACTION_MEDIA_BUTTON);
buttonDown.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_HEADSETHOOK));
context.sendOrderedBroadcast(buttonDown, "android.permission.CALL_PRIVILEGED");
// froyo and beyond trigger on buttonUp instead of buttonDown
Intent buttonUp = new Intent(Intent.ACTION_MEDIA_BUTTON);
buttonUp.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
context.sendOrderedBroadcast(buttonUp, "android.permission.CALL_PRIVILEGED");
Add permissions in AndroidManifest.xml file as
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE"/>

ITelephony method does not work on 4.4 and I find the headset/media button method still allows a fairly long ring before hangup.
This chaps blog post shows a new method that I have tested as working on 4.4.2 Galaxy s4 and HTC one mini that hangs up much more quickly and you don't get a missed call entry either.
http://aprogrammersday.blogspot.co.uk/2014/05/disconnect-block-drop-calls-android-4.html
The technique uses a runtime exec as below, apparently you may need to use a different number for some devices.
public class HangupPhoneCallReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (TelephonyManager.EXTRA_STATE_RINGING.equals(intent.getStringExtra(TelephonyManager.EXTRA_STATE))) {
Executor eS = Executors.newSingleThreadExecutor();
eS.execute(new Runnable() {
#Override
public void run() {
Runtime runtime = Runtime.getRuntime();
try {
Log.d(TAG, "service call phone 5 \n");
runtime.exec("service call phone 5 \n");
} catch (Exception exc) {
Log.e(TAG, exc.getMessage());
}
}
});
return;
}
}
}

Call disconnecting using IT Telephony doesn't work on some devices like Samsung S Duos. But you can still make ringer silent :)

To end call in older version then 9.0
use this:
TelephonyManager tm = (TelephonyManager)context.getSystemService(TELEPHONY_SERVICE);
Method m1 = null;
try {
m1 = tm.getClass().getDeclaredMethod("getITelephony");
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
m1.setAccessible(true);
Object iTelephony = null;
try {
iTelephony = m1.invoke(tm);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
Method m3 = null;
try {
m3 = iTelephony.getClass().getDeclaredMethod("endCall");
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
try {
m3.invoke(iTelephony);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
& for pie
TelecomManager telecomManager = (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
if (telecomManager != null) {
return telecomManager.endCall();
}
Make sure your compile SDK version is 28

private void PhoneControl(int nControl) {
if(nControl == PHONE_END_CALL) { // End call, all Android version
try {
TelecomManager telecomManager = (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
if (telecomManager != null) {
telecomManager.endCall();
}
}catch (Exception e) {}
try {
TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
if(tm == null)
return;
tm.getClass().getMethod("endCall").invoke(tm);
bIsEnding = true;
} catch (Exception e) {
/* Do Nothing */ }
}
if(nControl == PHONE_ACCEPT_CALL) { // Accept phone call
// if(!bCallAccepted) { // Call déjà accepté => pas d'action (évite double action)
bCallAccepted = true;
if(Build.VERSION.SDK_INT >= 26) { // Pris en charge Android >= 8.0
if(context.checkSelfPermission("android.permission.ANSWER_PHONE_CALLS") == PackageManager.PERMISSION_GRANTED) {
TelecomManager tm = (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
if(tm != null)
tm.acceptRingingCall();
}
}
if(Build.VERSION.SDK_INT >= 23 && Build.VERSION.SDK_INT < 26) { // Hangup in Android 6.x and 7.x
MediaSessionManager mediaSessionManager = (MediaSessionManager) context.getSystemService(Context.MEDIA_SESSION_SERVICE);
if(mediaSessionManager != null) {
try {
List<MediaController> mediaControllerList = mediaSessionManager.getActiveSessions
(new ComponentName(context, NotificationReceiverService.class));
for (MediaController m : mediaControllerList) {
if ("com.android.server.telecom".equals(m.getPackageName())) {
m.dispatchMediaButtonEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_HEADSETHOOK));
m.dispatchMediaButtonEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
break;
}
}
} catch (Exception e) {
// Toast.makeText(instance, "sdfsdf123123"+e, Toast.LENGTH_LONG).show();
Intent answerCalintent = new Intent(context, AcceptCallActivity.class);
answerCalintent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
Intent.FLAG_ACTIVITY_CLEAR_TASK |
Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
context.startActivity(answerCalintent);
/* Do Nothing */ }
}
// new Thread(new Runnable() {
//
// #Override
// public void run() {
// try {
// Runtime.getRuntime().exec("input keyevent " +
// Integer.toString(KeyEvent.KEYCODE_HEADSETHOOK));
// } catch (IOException e) {
// // Runtime.exec(String) had an I/O problem, try to fall back
// String enforcedPerm = "android.permission.CALL_PRIVILEGED";
// Intent btnDown = new Intent(Intent.ACTION_MEDIA_BUTTON).putExtra(
// Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN,
// KeyEvent.KEYCODE_HEADSETHOOK));
// Intent btnUp = new Intent(Intent.ACTION_MEDIA_BUTTON).putExtra(
// Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP,
// KeyEvent.KEYCODE_HEADSETHOOK));
//
// context.sendOrderedBroadcast(btnDown, enforcedPerm);
// context.sendOrderedBroadcast(btnUp, enforcedPerm);
// }
// }
//
// }).start();
}
if(Build.VERSION.SDK_INT < 23) { // Prend en charge jusqu'à Android 5.1
try {
if(Build.MANUFACTURER.equalsIgnoreCase("HTC")) { // Uniquement pour HTC
AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
if(audioManager!=null && !audioManager.isWiredHeadsetOn()) {
Intent i = new Intent(Intent.ACTION_HEADSET_PLUG);
i.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
i.putExtra("state", 0);
i.putExtra("name", "Orasi");
try {
context.sendOrderedBroadcast(i, null);
} catch (Exception e) { /* Do Nothing */ }
}
}
Runtime.getRuntime().exec("input keyevent " +
Integer.toString(KeyEvent.KEYCODE_HEADSETHOOK));
} catch (Exception e) {
// Runtime.exec(String) had an I/O problem, try to fall back
String enforcedPerm = "android.permission.CALL_PRIVILEGED";
Intent btnDown = new Intent(Intent.ACTION_MEDIA_BUTTON).putExtra(
Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_DOWN,
KeyEvent.KEYCODE_HEADSETHOOK));
Intent btnUp = new Intent(Intent.ACTION_MEDIA_BUTTON).putExtra(
Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP,
KeyEvent.KEYCODE_HEADSETHOOK));
context.sendOrderedBroadcast(btnDown, enforcedPerm);
context.sendOrderedBroadcast(btnUp, enforcedPerm);
}
}
// }
}
}
<!--Incoming call state Listen-->
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<!-- Store Data in Device/Shared pref-->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!--Get Incoming Number-->
<uses-permission android:name="android.permission.READ_CALL_LOG" />
<!--Answer call-->
<uses-permission android:name="android.permission.ANSWER_PHONE_CALLS" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission
android:name="android.permission.MODIFY_PHONE_STATE"
tools:ignore="ProtectedPermissions" />
<!--End Calll-->
<uses-permission android:name="android.permission.CALL_PHONE" />
public class NotificationReceiverService extends NotificationListenerService {
public NotificationReceiverService() {
}
}
<service
android:name=".notifications.NotificationReceiverService"
android:enabled="true"
android:exported="true"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
if(Build.VERSION.SDK_INT >= 26) { // Permission necessaire
if(checkSelfPermission("android.permission.ANSWER_PHONE_CALLS") != PackageManager.PERMISSION_GRANTED) {
String szPermissions[] = {"android.permission.ANSWER_PHONE_CALLS"};
requestPermissions(szPermissions, 0);
}
}
if(Build.VERSION.SDK_INT < 26 && Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP_MR1 )
{ // Permission pour Android 6.x et 7.x
ContentResolver contentResolver = getContentResolver();
String enabledNotificationListeners = Settings.Secure.getString(contentResolver, "enabled_notification_listeners");
String packageName = getPackageName();
if (enabledNotificationListeners == null || !enabledNotificationListeners.contains(packageName)) {
Intent intent2 = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP_MR1) {
intent2 = new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS);
}
startActivity(intent2);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
//Do something after 100ms
Intent intent=new Intent(MainActivity.this, Main2Activity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
}, 1000);
}
}

How to block Specific outgoing calls

I want to block a specific phone number that is in my database
I do a comparison between the number the user dialed, and the number in memory. If they are equal, I block the call.
My code:
public void onReceive(Context context, Intent intent) {
PlaceDataSQL placeDataSQL =new PlaceDataSQL(context);
ArrayList<String> getUsersPhoneNumbers= placeDataSQL.getUsersPhoneNumbers();
//TODO
//===========
//here I need to check the number
Bundle b = intent.getExtras();
String incommingNumber = b.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
//String outGoingNumber = b.getString(TelephonyManager.);
Boolean find=false;
try {
for(int i=0;i<getUsersPhoneNumbers.size();i++)
{
if(incommingNumber.equals(getUsersPhoneNumbers.get(i)))
{
find=true;
break;
}
}
} catch (Exception e) {
incommingNumber="";
}
// ========================================
//here the problem
//=========================================
String phonenumber=b.getString(Intent.EXTRA_PHONE_NUMBER);
try {
for(int i=0;i<getUsersPhoneNumbers.size();i++)
{
if(phonenumber.equals(getUsersPhoneNumbers.get(i)))
{
find=true;
break;
}
}
if (!find)
return;
}catch (Exception e) {
phonenumber="";
}
if (!find)
return;
/* examine the state of the phone that caused this receiver to fire off */
String phone_state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
if (phone_state.equals(TelephonyManager.EXTRA_STATE_RINGING))
{
logMe("Phone Ringing: the phone is ringing, scheduling creation call answer screen activity");
Intent i = new Intent(context, CallAnswerIntentService.class);
i.putExtra("delay", 100L);
i.putExtra("number", incommingNumber);
context.startService(i);
logMe("Phone Ringing: started, time to go back to listening");
}
if (phone_state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK))
{
Intent i = new Intent(context,InCallScreenGuardService.class);
i.putExtra("delay", 100L);
i.putExtra("number", phonenumber);
logMe("Phone Offhook: starting screen guard service");
context.startService(i);
}
if (phone_state.equals(TelephonyManager.EXTRA_STATE_IDLE))
{
Intent i = new Intent(context,InCallScreenGuardService.class);
logMe("Phone Idle: stopping screen guard service");
context.stopService(i);
}
return;
}
The problem:
I can get incoming numbers but I can't get outgoing numbers?

You will need a BroadcastReciever for this.
public class OutgoingCallReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
if(null == bundle)
return;
String phonenumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Log.i("OutgoingCallReceiver",phonenumber);
Log.i("OutgoingCallReceiver",bundle.toString());
String info = "Detect Calls sample application\nOutgoing number: " + phonenumber;
Toast.makeText(context, info, Toast.LENGTH_LONG).show();
}
}

Block incoming calls

my VoiP-client would like to block all incoming calls to the phone while my own call is taking place. Is it possible to do this somehow?

Yes you can block incoming calls. Using this code
String phonestate = bundle.getString(TelephonyManager.EXTRA_STATE);
try
{
if (TelephonyManager.EXTRA_STATE_RINGING.equalsIgnoreCase(phonestate))
{
try
{
TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
Class c = Class.forName(tm.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
telephonyService = (com.android.internal.telephony.ITelephony) m.invoke(tm);
}
catch (Exception e)
{
e.printStackTrace();
}
if (prefStatus != null)
{
if (count == 1)
{
telephonyService.endCall();
String prefLoginemail = myloginpref.getString("emailid", null);
System.out.println(printdata + " prefLoginemail :: "+ prefLoginemail);
Global.mNotificationManager = (NotificationManager) mxcontext.getSystemService(Context.NOTIFICATION_SERVICE);
notifyDetails = new Notification(com.CellPhoneTerror.R.drawable.icon1,"CellPhoneTerror!", System.currentTimeMillis());
myIntent = PendingIntent.getActivity(mxcontext, 0, new Intent(mxcontext, clsHomePage.class), 0);
notifyDetails.setLatestEventInfo(mxcontext,"You Got a Call from Blocked Number.", "",myIntent);
notifyDetails.flags |= Notification.FLAG_AUTO_CANCEL;
Global.mNotificationManager.notify(Global.SIMPLE_NOTFICATION_ID,notifyDetails);
}
}
}
if (prefIncomingBlock.equals("true"))
{
if (TelephonyManager.EXTRA_STATE_IDLE.equalsIgnoreCase(phonestate))
{
if (count == 0)
{
System.out.println("if Cellphoneterror:"+ Global.clsIncomingNum);
Intent block = new Intent(context, dialogbox1.class);
block.setFlags(intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(block);
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
Thanks.

Not with the current SDK no, You can monitor incoming calls and give the user the option to answer with your application instead of the native app