Develop Reference

Android how to detect if outgoing call is answered

I'm developing an app that will only be used in house for testing purpose. I have searched a lot and tried different suggestions as suggested in different post but none seems to be working for me.
I'm open to any suggestions like Reflections, Accessibility Service, root or any other hack. Please help.
Regards

TRY THIS
Set all required permission in manifest.xml file.
Call this class in Service
public class PhoneListener extends PhoneStateListener {
private static PhoneListener instance = null;
/**
* Must be called once on app startup
*
* #param context - application context
* #return
*/
public static PhoneListener getInstance(Context context) {
if (instance == null) {
instance = new PhoneListener(context);
}
return instance;
}
public static boolean hasInstance() {
return null != instance;
}
private final Context context;
private CallLog phoneCall;
private PhoneListener(Context context) {
this.context = context;
}
AtomicBoolean isRecording = new AtomicBoolean();
AtomicBoolean isWhitelisted = new AtomicBoolean();
/**
* Set the outgoing phone number
* <p/>
* Called by {#link MyCallReceiver} since that is where the phone number is available in a outgoing call
*
* #param phoneNumber
*/
public void setOutgoing(String phoneNumber) {
if (null == phoneCall)
phoneCall = new CallLog();
phoneCall.setPhoneNumber(phoneNumber);
phoneCall.setOutgoing();
// called here so as not to miss recording part of the conversation in TelephonyManager.CALL_STATE_OFFHOOK
isWhitelisted.set(Database.isWhitelisted(context, phoneCall.getPhoneNumber()));
}
#Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE: // Idle... no call
if (isRecording.get()) {
RecordCallService.stopRecording(context);
phoneCall = null;
isRecording.set(false);
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK: // Call answered
if (isWhitelisted.get()) {
isWhitelisted.set(false);
return;
}
if (!isRecording.get()) {
isRecording.set(true);
// start: Probably not ever usefull
if (null == phoneCall)
phoneCall = new CallLog();
if (!incomingNumber.isEmpty()) {
phoneCall.setPhoneNumber(incomingNumber);
}
// end: Probably not ever usefull
RecordCallService.sartRecording(context, phoneCall);
}
break;
case TelephonyManager.CALL_STATE_RINGING: // Phone ringing
// DO NOT try RECORDING here! Leads to VERY poor quality recordings
// I think something is not fully settled with the Incoming phone call when we get CALL_STATE_RINGING
// a "SystemClock.sleep(1000);" in the code will allow the incoming call to stabilize and produce a good recording...(as proof of above)
if (null == phoneCall)
phoneCall = new CallLog();
if (!incomingNumber.isEmpty()) {
phoneCall.setPhoneNumber(incomingNumber);
// called here so as not to miss recording part of the conversation in TelephonyManager.CALL_STATE_OFFHOOK
isWhitelisted.set(Database.isWhitelisted(context, phoneCall.getPhoneNumber()));
}
break;
}
}
}
And use Broadcast Receiver
public class MyCallReceiver extends BroadcastReceiver {
public MyCallReceiver() {
}
static TelephonyManager manager;
#Override
public void onReceive(Context context, Intent intent) {
Log.i("JLCreativeCallRecorder", "MyCallReceiver.onReceive ");
if (!AppPreferences.getInstance(context).isRecordingEnabled()) {
removeListener();
return;
}
if (Intent.ACTION_NEW_OUTGOING_CALL.equals(intent.getAction())) {
if (!AppPreferences.getInstance(context).isRecordingOutgoingEnabled()) {
removeListener();
return;
}
PhoneListener.getInstance(context).setOutgoing(intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER));
} else {
if (!AppPreferences.getInstance(context).isRecordingIncomingEnabled()) {
removeListener();
return;
}
}
// Start Listening to the call....
if (null == manager) {
manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
}
if (null != manager)
manager.listen(PhoneListener.getInstance(context), PhoneStateListener.LISTEN_CALL_STATE);
}
private void removeListener() {
if (null != manager) {
if (PhoneListener.hasInstance())
manager.listen(PhoneListener.getInstance(null), PhoneStateListener.LISTEN_NONE);
}
}
}
I hope you get some help from this code.
Thanks

You can use accessibility events to detect the call duration and from that you can detect if the outgoing call is answered or not..
I have answered it in detail in Here` you can check that.

You need this permission in manifest
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
TelephonyManager has a listener to get phone state. implement this tho know if the phone is ringing or in a call.
TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
PhoneStateListener callStateListener = new PhoneStateListener() {
public void onCallStateChanged(int state, String incomingNumber) {
// TODO React to a incoming call.
try {
if (state == TelephonyManager.CALL_STATE_RINGING) {
Toast.makeText(getApplicationContext(), "Phone Is Ringing" + incomingNumber, Toast.LENGTH_LONG).show();
number = incomingNumber;
//g.setPhoneNo(incomingNumber);
AndroidNetCommunicationClientActivity.mMsgSendRequest("CommandMsgCallIncoming" + number);
} else if (state == TelephonyManager.CALL_STATE_OFFHOOK) {
Toast.makeText(getApplicationContext(), "Phone is Currently in A call" + incomingNumber, Toast.LENGTH_LONG).show();
//number = mIntent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
number = incomingNumber;
} else if (state == TelephonyManager.DATA_DISCONNECTED) {
number = "";
CallID = "";
}
} catch (Exception e) {
// TODO Auto-generated catch block
//conn.MessageBox(MainActivity.this, e.getMessage());
e.printStackTrace();
}
super.onCallStateChanged(state, incomingNumber);
}
};
telephonyManager.listen(callStateListener, PhoneStateListener.LISTEN_CALL_STATE);

How to get wifi signal informations : strength, Link speed on android studio?

I used the folowing code but i still have problems, it doesn't return any informations :
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//initializeWiFiListener();
}
public void initializeWiFiListener() {
String connectivity_context = Context.WIFI_SERVICE;
final WifiManager wifi = (WifiManager) getSystemService(connectivity_context);
if (!wifi.isWifiEnabled()) {
if (wifi.getWifiState() != WifiManager.WIFI_STATE_ENABLING) {
wifi.setWifiEnabled(true);
}
}
registerReceiver(new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
WifiInfo info = wifi.getConnectionInfo();
String ssid = info.getSSID();
int rssi = info.getRssi();
int speed = info.getLinkSpeed();
TextView t1 = (TextView) findViewById(R.id.textView);
t1.setText(ssid + " " + Integer.toString(rssi) + " " + Integer.toString(speed));
}
}, new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));
}
}
there is no informations about my connected wifi.
How to get wifi signal informations : strength, Link speed ?

Based on the documentation, call getConnectionInfo() on WifiManager, to get a WifiInfo object. On there, you have getRssi() for signal strength and getLinkSpeed() for link speed.

android wifi signal strength is not coming properly

I am using the following code in wpa_supplicant for getting the signal strength of wifi in Android. I am able to get linkspeed but signal strength is always showing -110dB, although router is 1 meter away.
Code:
if ((os_strcasecmp(cmd, "rssi") == 0) || (os_strcasecmp(cmd, "rssi-approx") == 0)) {
struct iwreq wrq;
struct iw_statistics stats;
signed int rssi;
wpa_printf(MSG_DEBUG, ">>>. DRIVER AWEXT RSSI ");
wrq.u.data.pointer = (caddr_t) &stats;
wrq.u.data.length = sizeof(stats);
wrq.u.data.flags = 1; /* Clear updated flag */
os_strncpy(wrq.ifr_name, drv->wext->ifname, IFNAMSIZ);
if (ioctl(drv->wext->ioctl_sock, SIOCGIWSTATS, &wrq) < 0) {
perror("ioctl[SIOCGIWSTATS]");
ret = -1;
} else {
if (stats.qual.updated & IW_QUAL_DBM) {
/* Values in dBm, stored in u8 with range 63 : -192 */
rssi = ( wrq.u.qual.level > 63 ) ?
wrq.u.qual.level - 0x100 :
wrq.u.qual.level;
} else {
rssi = wrq.u.qual.level;
}
if (drv->ssid_len != 0 && drv->ssid_len < buf_len) {
os_memcpy((void *) buf, (void *) (drv->ssid),
drv->ssid_len );
ret = drv->ssid_len;
ret += snprintf(&buf[ret], buf_len-ret,
" rssi %d\n", rssi);
if (ret < (int)buf_len) {
return( ret );
}
ret = -1;
}
}
}

Following code will provide the RSSI value of wifi strength...
hope this will help you.....
public class Wifi2 extends Activity{
Context context;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
context=this;
}
#Override
public void onResume() {
super.onResume();
//Note: Not using RSSI_CHANGED_ACTION because it never calls me back.
IntentFilter rssiFilter = new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
this.registerReceiver(myRssiChangeReceiver, rssiFilter);
WifiManager wifiMan=(WifiManager)context.getSystemService(Context.WIFI_SERVICE);
wifiMan.startScan();
}
#Override
public void onPause() {
super.onPause();
this.unregisterReceiver(myRssiChangeReceiver);
}
/**
* Broadcast receiver to update
* s
*/
private BroadcastReceiver myRssiChangeReceiver
= new BroadcastReceiver(){
#Override
public void onReceive(Context arg0, Intent arg1) {
WifiManager wifiMan=(WifiManager)context.getSystemService(Context.WIFI_SERVICE);
wifiMan.startScan();
int newRssi = wifiMan.getConnectionInfo().getRssi();
Toast.makeText(context, ""+newRssi, Toast.LENGTH_SHORT).show();
}};
}

Android how to obtain signal strength [duplicate]

I am trying to write a very simple Android application that checks the signal strength of the current cell. So far, I have only found something called getNeighboringCellInfo(), but I'm not really sure if that includes the current cell.
How do I get the CURRENT cell signal strength in Android?
Does getNeighborCellInfo() get the current cell? It doesn't seem like it based on the results that I have been able to get with it. Here's my current code:
List<NeighboringCellInfo> n = tm.getNeighboringCellInfo();
//Construct the string
String s = "";
int rss = 0;
int cid = 0;
for (NeighboringCellInfo nci : n)
{
cid = nci.getCid();
rss = -113 + 2*nci.getRssi();
s += "Cell ID: " + Integer.toString(cid) + " Signal Power (dBm): " +
Integer.toString(rss) + "\n";
}
mainText.setText(s);

create a PhoneStateListener and handle the onSignalStrengthChanged callback. When your app is initialized, it should give you an initial notification. This is in 1.x. in 2.x, there's an open issue about this.

This code may help:
PhoneStateListener phoneStateListener = new PhoneStateListener() {
public void onCallForwardingIndicatorChanged(boolean cfi) {}
public void onCallStateChanged(int state, String incomingNumber) {}
public void onCellLocationChanged(CellLocation location) {}
public void onDataActivity(int direction) {}
public void onDataConnectionStateChanged(int state) {}
public void onMessageWaitingIndicatorChanged(boolean mwi) {}
public void onServiceStateChanged(ServiceState serviceState) {}
public void onSignalStrengthChanged(int asu) {}
};
Once you’ve created your own Phone State Listener, register it with the Telephony Manager using a bitmask to indicate the events you want to listen for, as shown in the following code snippet:
TelephonyManager telephonyManager = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen(phoneStateListener,
PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR |
PhoneStateListener.LISTEN_CALL_STATE |
PhoneStateListener.LISTEN_CELL_LOCATION |
PhoneStateListener.LISTEN_DATA_ACTIVITY |
PhoneStateListener.LISTEN_DATA_CONNECTION_STATE |
PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR |
PhoneStateListener.LISTEN_SERVICE_STATE |
PhoneStateListener.LISTEN_SIGNAL_STRENGTH);
Also, need to add these to AndroidManifest.xml:
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

Below code will create effect like picture (Android system Cell Info)
Inside your running activity/fragment, create a sub class like this
TextView txtSignalMobile1 = findViewById...;
class myPhoneStateListener extends PhoneStateListener {
public int signalStrengthValue;
public int signalLevel;
#RequiresApi(api = Build.VERSION_CODES.Q)
public void onSignalStrengthsChanged(SignalStrength signalStrength) {
super.onSignalStrengthsChanged(signalStrength);
if (signalStrength.isGsm()) {
if (signalStrength.getGsmSignalStrength() != 99)
signalStrengthValue = signalStrength.getGsmSignalStrength() * 2 - 113;
else{
signalStrengthValue = signalStrength.getCellSignalStrengths().get(0).getDbm();
signalLevel =signalStrength.getCellSignalStrengths().get(0).getAsuLevel();
}
} else {
signalStrengthValue = signalStrength.getCdmaDbm();
}
txtSignalMobile1.setText(signalStrengthValue + "dbm, " + signalLevel + "asu");
}
}
Call somewhere else maybe onCreate or after a button... (used thread to update continnously value changed)
Thread splashThread2 = new Thread() {
#Override
public void run() {
try {
while (!isInterrupted()) {
Thread.sleep(1000);
requireActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
// update TextView here!
int signal2 = NetworkUtils.GetWifiSignal(requireContext());
txtSignalWifi.setText(signal2 + "/100");
}
});
}
} catch (Exception ignore) {
// when user exit suddenly
}
}
};
splashThread2.start();

Android - Passing changing data from BroadcastReceiver to another Object?

I have a Wifi class that has a couple of broadcast receivers that listen out for changes in Wifi connection state, Wifi Rssi levels etc...
I want to be able to pass this data to another "Engine" Object and still keep the data changing dynamically.
I currently create a Wifi object within the "Engine" class and run its methods, the data is then dynamically displayed fine in Log statements in the log cat.
My problem is trying to get the dynamically changing data to the Engine, when I try to get data over it gets the first value and leaves it at that without ever updating.
So I was wondering what my options are on how to do this?
Below is my current code setup if that is any help:
Wifi Class
public Wifi(Context context){
mainWifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
}
public int getCurrentWifiState() {
return currentWifiState;
}
public void setCurrentWifiState(int currentWifiState) {
this.currentWifiState = currentWifiState;
}
public String getConnectedSSID() {
return connectedSSID;
}
public void setConnectedSSID(String connectedSSID) {
this.connectedSSID = connectedSSID;
}
public int getConnectedLevel() {
return connectedLevel;
}
public void setConnectedLevel(int connectedLevel) {
this.connectedLevel = connectedLevel;
}
//method to do a scan and receive info about all access points available
public List<ScanResult> scan(final Context context){
receiverWifi = new WifiReceiver();
mainWifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
context.registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mainWifi.startScan();
Log.d("WIFI DEBUG","\nStarting Scan...\n");
wifiList = mainWifi.getScanResults();
return wifiList;
}
class WifiReceiver extends BroadcastReceiver {
public void onReceive(Context c, Intent intent) {
sb = new StringBuilder();
wifiList = mainWifi.getScanResults();
ListIterator<ScanResult> results = wifiList.listIterator();
while (results.hasNext()) {
ScanResult info = results.next();
String wifiInfo = "Name: " + info.SSID + "; capabilities = " + info.capabilities + "; sig str = " + info.level + "dBm";
Log.v("WiFi", wifiInfo);
Log.d("Signal Level", "Signal Level : " + mainWifi.calculateSignalLevel(info.level, 5));
}
}
}
//method to listen for changes in the level of the wifi connection
public void initializeWiFiListener(Context context){
Log.d("WIFI", "executing initializeWiFiListener");
String connectivity_context = Context.WIFI_SERVICE;
final WifiManager wifi = (WifiManager)context.getSystemService(connectivity_context);
if(!wifi.isWifiEnabled()){
if(wifi.getWifiState() != WifiManager.WIFI_STATE_ENABLING){
//wifi.setWifiEnabled(true);
}
}
rssiListener = new BroadcastReceiver(){
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(WifiManager.RSSI_CHANGED_ACTION.equals(action)){
WifiInfo data = mainWifi.getConnectionInfo();
Log.d("WIFI", "RSSI has changed");
if(mainWifi.getConnectionInfo()!=null){
setConnectedSSID(data.getSSID());
setConnectedLevel(data.getRssi());
Log.d("WIFI", "new RSSI = " + data.getSSID()+ " " + data.getRssi() + "dBm");
}
}
}
};
//leak here - need to de reg receiver
context.registerReceiver(rssiListener, new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));
}
//method to listen for changes in the connection to a wifi access point
public void changeWiFiListener(Context context){
Log.d("WIFI", "executing initializeWiFiListener");
String connectivity_context = Context.WIFI_SERVICE;
final WifiManager wifi = (WifiManager)context.getSystemService(connectivity_context);
if(!wifi.isWifiEnabled()){
if(wifi.getWifiState() != WifiManager.WIFI_STATE_ENABLING){
//wifi.setWifiEnabled(true);
}
}
wifiChangeListener = new BroadcastReceiver(){
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)){
Log.d("WIFI", "WIFI has changed");
int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, -1);
Log.d("WIFI", "WIFI State = " + wifiState);
setCurrentWifiState(wifiState);
}
}
};
//Leak here - not unregistering receiver
context.registerReceiver(wifiChangeListener, new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION));
}
public WifiReceiver getReceiverWifi() {
return receiverWifi;
}
public void setReceiverWifi(WifiReceiver receiverWifi) {
this.receiverWifi = receiverWifi;
And my Engine Code:
public Engine(Context aContext){
context = aContext;
cm = new CallManager(aContext);
wifiManager = new Wifi(context);
wifiManager.initializeWiFiListener(context);
wifiManager.changeWiFiListener(context);
clc = new CallLogController();
}
public void controlCalls(){
int currentWifiState = wifiManager.getCurrentWifiState();
cm.monitorOutgoingCalls(context, currentWifiState, clc);
}
public void unRegAllRecievers(){
wifiManager.unregRegisters(context);
cm.unRegReciever(context);
}
public void doWifiScan(){
scanTask = new TimerTask() {
public void run() {
handler.post(new Runnable() {
public void run() {
wifiManager.scan(context);
Log.d("TIMER", "Timer set off");
}
});
}};
t.schedule(scanTask, 300, 30000);
}
public void stopScan(){
scanTask.cancel();
t.cancel();
//boolean tf = scanTask.cancel();
//Log.d("TIMER", "Timer True or False? : " + tf);
}
}
So I'm just wondering what would be the best solution to make sure the data from the Wifi class is constantly updated in the engine when it receives changes from the broadcast receiver?

depends if your class, the one that should be notified of the latest state.
If it's a class that is not created in an Activity and is static (singletone or Application based) then you should probably have the Reciver update the singletone class.
If it's Activity based, you need stick Broadcasts, and once the broadcast is recieved remove the sticky broadcast.