Номер телефона установлен на NULL во время Off D ⇐ Android

[Anonymous]

Я получаю номер телефона во время кольцевого состояния, но иногда он устанавливается в NULL во время состояния выкл. Я не могу поймать момент, когда он переходит к NULL. После этого, когда я беру звонок, он переходит в состояние Offhook , и я получил null в Callno, поэтому он дает мне nullpointerexception . < /p>

Как предотвратить эту ситуацию?private static boolean noCallListenerYet = true;
TelephonyManager telephonyManager;
static MyPhoneStateListener phoneListener;
private static Context context1;
Context context;
private int prevState;
String userId;
String incoming_number = null;
Bundle bundle;
String state;
private static String callno = null;
static SharedPreferences pref;
static int cidvalue;
/*Added to resolve the below bug:
* Bug: At the time of call comes on poped up note and
* below note was not send and new userid not
* replace with older userid.
*/
private static boolean isOnReceive = false;

public static String getCallno() {
return callno;
}

@Override
public void onReceive(Context context, Intent intent) {
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);

isOnReceive = true;

if( CallTrackerModel.isRecording() ){
}else{

CallTrackerModel.setCallId("");
try{
if (intent.getAction()
.equals("android.intent.action.NEW_OUTGOING_CALL")) {
if ((bundle = intent.getExtras()) != null) {
callno = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
callno = callno.replaceAll(" ", "");
}
}
}
catch(Exception e){
}

try{
if (noCallListenerYet) {
telephonyManager = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
if (phoneListener == null) {
phoneListener = new MyPhoneStateListener(context);
telephonyManager.listen(phoneListener,
PhoneStateListener.LISTEN_CALL_STATE);
}
noCallListenerYet = false;
}
}catch(Exception e){
isOnReceive = false;
}

context1 = context;
}

}

public static int returncid() {
int cid;
pref = context1.getSharedPreferences("Myprefer", 0);
SharedPreferences.Editor editor = pref.edit();
cid = pref.getInt("currentcid", 0);
if (cid == 0) {
cid = cid + 1;
}
editor.putInt("currentcid", cid);
editor.commit();
pref = context1.getSharedPreferences("Myprefer", 0);
cidvalue = pref.getInt("currentcid", 0);
return cidvalue;
}

private class MyPhoneStateListener extends PhoneStateListener {

Context context;
MyPhoneStateListener(Context c) {
super();
context = c;
}

/**
* Listen call state changes.
*/
public void onCallStateChanged(int state, String incomingNumber) {
CallTrackerModel ctm = new CallTrackerModel(context1);
switch (state) {

// Incoming/Outgoing call over.
case TelephonyManager.CALL_STATE_IDLE:

if (CallTrackerModel.returnRecordStarted()) {

ctm.stopRecording();
userId = RetrieveUserId.getUserId();

}

//For Received calls.
if (prevState == TelephonyManager.CALL_STATE_OFFHOOK) {

try{

cidvalue = pref.getInt("currentcid", 0);
++cidvalue;
pref = context1.getSharedPreferences("Myprefer", 0);
SharedPreferences.Editor editor = pref.edit();
editor.putInt("currentcid", cidvalue);
editor.commit();
prevState = state;
// Start note activity.
Intent i = new Intent(context1, NoteActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

if (userId == null) {
userId = "@@";
}
i.putExtra("userId", userId);
i.putExtra("isSend", false);
i.putExtra("incomingNumber", incoming_number);
context1.startActivity(i);
i = null;

}catch(Exception ex){
}
}

//For missed calls.
if(prevState==TelephonyManager.CALL_STATE_RINGING){
prevState=state;
}

break;

//If the caller or receiver picks up the phone
case TelephonyManager.CALL_STATE_OFFHOOK:
try{
if( CallTrackerModel.isRecording() ){
break;
}
if( NoteActivity.getIsStart() ){
NoteActivity.setStop(true);
}

prevState = state;
if (callno.length() == 13) {

incoming_number = callno.substring(3);

} else if (callno.length() == 11) {

incoming_number = callno.substring(1);

} else {

incoming_number = callno;

}

}catch(Exception ex){
isOnReceive = false;
}

try{
if( NoteActivity.getIsStop() ){

if(NoteActivity.getLater()){
NoteActivity.setLater(false);
NoteActivity.setStop(false);
}else{
NoteActivity.later();
}
}
}catch(Exception e){
isOnReceive = false;
}

try{
Intent i = new Intent(context1, RetrieveUserId.class);
i.putExtra("incoming number", incoming_number);

context1.startService(i);
// start recording
ctm.startRecording();
}catch(Exception e){
isOnReceive = false;
}

break;
case TelephonyManager.CALL_STATE_RINGING:

if( CallTrackerModel.isRecording() ){

}else{
prevState = state;
callno = incomingNumber;
callno = callno.replaceAll(" ", "");
}

break;
}
}
}
< /code>

} < /p>

Подробнее здесь: https://stackoverflow.com/questions/396 ... onymanager