I have following ContentObserver implementation for receiving and writing SMS, but it is called multiple times.
Code:
public class SMSObserverActivity extends Activity {
protected MyContentObserver observer = null;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String url = "content://mms-sms/";
Uri uri = Uri.parse(url);
observer = new MyContentObserver(new Handler());
getContentResolver().registerContentObserver(uri, true, observer);
}
#Override
protected void onDestroy(){
super.onDestroy();
getContentResolver().unregisterContentObserver(observer);
}
class MyContentObserver extends ContentObserver {
ContentValues values = new ContentValues();
Handler handler;
public MyContentObserver(Handler handler){
super(handler);
this.handler = handler;
}
#Override
public boolean deliverSelfNotifications(){
return false;
}
#Override
public void onChange(boolean arg0){
super.onChange(arg0);
Log.v("SMS", "Notification on SMS observer");
values.put("status", 5);
Message msg = new Message();
msg.obj = "xxxxxxxxxx";
int threadId = 0;
handler.sendMessage(msg);
Uri uriSMSURI = Uri.parse("content://sms/");
Cursor cur =
getContentResolver().query(uriSMSURI, null, null, null,
null);
cur.moveToNext();
Log.e("sms", cur.getString(4)+" "+cur.getString(11));
}
}
}
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.READ_SMS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_SMS"></uses-permission>
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".SMSObserverActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Why is it called multiple times?
EDIT:
There was the idea that the problem is caused by the missing unregisterContentObserver, but it makes no difference.
This is occurring because you are registering your content observer for the entire SMS database. So your content observer gets notified each time a table entry in the database gets updated.
In this case when a message is sent for example around 7 tables entries get updated so your content observer gets notified 7 times.
Since I'm only interested if a message is sent I've changed to only observe the queued messages and this means my observer always gets notified exactly three times so I have implemented code to protect against that.
There are likely to be some other issues such as multi recipient or multi part messages but the basics work so far.
To avoid sending multiple sms by content observer try this
public class SmsObserver extends ContentObserver {
SharedPreferences trackMeData;
private Context context;
private static int initialPos;
private static final String TAG = "SMSContentObserver";
private static final Uri uriSMS = Uri.parse("content://sms/sent");
public SmsObserver(Handler handler, Context ctx) {
super(handler);
context = ctx;
trackMeData = context.getSharedPreferences("LockedSIM", 0);
initialPos = getLastMsgId();
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
queryLastSentSMS();
}
public int getLastMsgId() {
Cursor cur = context.getContentResolver().query(uriSMS, null, null, null, null);
cur.moveToFirst();
int lastMsgId = cur.getInt(cur.getColumnIndex("_id"));
Log.i(TAG, "Last sent message id: " + String.valueOf(lastMsgId));
return lastMsgId;
}
protected void queryLastSentSMS() {
new Thread(new Runnable() {
#Override
public void run() {
Cursor cur =
context.getContentResolver().query(uriSMS, null, null, null, null);
if (cur.moveToNext()) {
try {
String body = cur.getString(cur.getColumnIndex("body"));
if (initialPos != getLastMsgId()) {
String receiver = cur.getString(cur.getColumnIndex("address"));
Log.i("account", myDeviceId);
Log.i("date", day + "-" + month + "-" + year + " "
+ hour + ":" + minute + ":" + seconde);
Log.i("sender", myTelephoneNumber);
Log.i("receiver", receiver );
// Then, set initialPos to the current position.
initialPos = getLastMsgId();
sendsmstoph(receiver, body);
}
} catch (Exception e) {
// Treat exception here
}
}
cur.close();
}
}).start();
}
If you want to have your observer enabled only when the activity is in active state, I advise you to move registerContentObserver() and unregisterContentObserver() to methods onResume() and onPause() respectively. onDestroy() may not be called if your application exits, but onPause() is guaranteed to be.
Related
I am developing an app that notify the user when any SMS marked as read even if the app isn't running
I simply created a contentobserver and I registered it in a service
the problem is that the contentobserver runs if the new SMS inserted or deleted but when the SMS marked as read ( Update operation) it doesn't work
here is my service code
public class Smssendservice extends Service {
private static Timer timer = new Timer();
private Context ctx;
public IBinder onBind(Intent arg0)
{
return null;
}
public void onCreate()
{
super.onCreate();
ctx = this;
startService();
}
private void startService()
{
//timer.scheduleAtFixedRate(new mainTask(), 0, 5000);
Toast.makeText(getApplicationContext(), "Before Register", Toast.LENGTH_SHORT).show();
final Uri SMS_STATUS_URI = Uri.parse("content://sms");
SMSLogger sl= new SMSLogger();
SMSObserver smsSentObserver = new SMSObserver(sl, ctx);
getContentResolver().registerContentObserver(SMS_STATUS_URI, true, smsSentObserver);
Toast.makeText(getApplicationContext(), "After Register", Toast.LENGTH_SHORT).show();
}
}
I am registering my content observer in the service
here is the content observer code
public class SMSObserver extends ContentObserver
{
SMSLogger smsLogger;
Context context;
public SMSObserver(SMSLogger smsLogger, Context context) {
super(new Handler());
this.context=context;
this.smsLogger = smsLogger;
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
smsLogger.querySMS(context);
}
}
eventually here is the SMS logger that I show the TOAST if the SMS data changed
public class SMSLogger {
protected void querySMS(Context context) {
Uri uriSMS = Uri.parse("content://sms/");
Cursor cur = context.getContentResolver().query(uriSMS, null, null, null, null);
/* cur.moveToNext(); // this will make it point to the first record, which is the last SMS sent
String body = cur.getString(cur.getColumnIndex("body")); //content of sms
String add = cur.getString(cur.getColumnIndex("address")); //phone num
String time = cur.getString(cur.getColumnIndex("date")); //date
String protocol = cur.getString(cur.getColumnIndex("protocol")); //protocol*/
Toast.makeText(context, "Data Changed CHECK SMS" , Toast.LENGTH_SHORT).show();
/*logging action HERE...*/
}
}
it showed this message "Data Changed CHECK SMS" if new SMS inserted or SMS deleted but in case of update the toast doesnt appear. any clue ?
In your update method, check if the number of entries updated is more than 0.
If it is, do getContext().getContentResolver().notifyChange(uri, null); before you return the number of entries updated.
I am trying to detect when a SMS is sent. I have searched on the web and on StackOverflow and all seems to be the same solution.
I have a simple Activity that starts a Service and in the service I am trying to detect when a SMS is sent:
MainActivity.java
import android.os.Bundle;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.util.Log;
import android.view.Menu;
public class MainActivity extends Activity {
Intent serviceIntent;
private static MyReceiver mServiceReceiver;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
protected void onPause() {
Log.i("Status","Pause");
unregisterReceiver(mServiceReceiver);
super.onPause();
}
#Override
protected void onResume() {
Log.i("Status","Resume");
// Inicio el Servicio
serviceIntent = new Intent(MainActivity.this, TrackerService.class);
startService(serviceIntent);
// Registro el broadcast del Service para obtener los datos
mServiceReceiver = new MyReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(TrackerService.mAction);
registerReceiver(mServiceReceiver, intentFilter);
super.onResume();
}
/**
* Receiver del Service, aqui se obtienen los datos que envia el Service
*/
private class MyReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context arg0, Intent arg1) {
Log.i("ServiceReceiver", "onReceive()");
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
TrackerService.java
import android.app.Service;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.ContentObserver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
public class TrackerService extends Service{
// Nombre del service
public static final String mAction = "SMSTracker";
ContentResolver content;
ContentResolver contentResolver;
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("Status","Service Start");
// ContentResolver para obtener los SMS salientes
contentResolver = this.getContentResolver();
contentResolver.registerContentObserver(Uri.parse("content://sms/out"), true, new mObserver(new Handler()));
return super.onStartCommand(intent, flags, startId);
}
/**
* Observer que obtiene los SMS salientes
*/
class mObserver extends ContentObserver {
public mObserver(Handler handler) {
super(handler);
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
Log.i("Status","onChange");
Uri uriSMS = Uri.parse("content://sms/out");
Cursor cur = contentResolver.query(uriSMS, null, null, null, null);
Log.i("SMS", "Columns: " + cur.getColumnNames());
cur.moveToNext();
String smsText = cur.getString(cur.getColumnIndex("body"));
Log.i("SMS", "SMS Lenght: " + smsText.length());
}
}
#Override
public void onDestroy() {
super.onDestroy();
Log.i("Status","Service Destroy");
}
#Override
public IBinder onBind(Intent intent) {
Log.i("Status","Service Bind");
return null;
}
}
Manifest
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>
<uses-permission android:name="android.permission.READ_SMS"></uses-permission>
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".TrackerService" />
</application>
According to my LogCat the service is started and I can see it in running services in my Android phone onChange() method inside my service is never called when I send an sms. Is something I am missing ?
If you replace content://sms/out by content://sms/, you'll see that the ContentObserver is not called when the SMS is sent but when one is received. Here is the code of my observer. It only enters onChange(boolean) when receiving a SMS. The protocol is "0" at that time.
So, I am struck at the same point as you :(
class SmsProviderObserver extends ContentObserver {
public SmsProviderObserver(Handler handler) {
super(handler);
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
Uri uriSms = Uri.parse("content://sms/");
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(uriSms, null, null, null, null);
// this will make it point to the first record, which is the last
// SMS sent
if (!cur.moveToNext()) {
return; // weird!
}
String protocol = cur.getString(cur.getColumnIndex("protocol"));
if (protocol == null) {
// send
Log.i("SMS", "SMS SEND");
int threadId = cur.getInt(cur.getColumnIndex("thread_id"));
Log.i("SMS", "SMS SEND ID = " + threadId);
Cursor c = cr.query(
Uri.parse("content://sms/outbox/" + threadId), null,
null, null, null);
c.moveToNext();
int p = cur.getInt(cur.getColumnIndex("person"));
Log.i("SMS", "SMS SEND person= " + p);
// getContentResolver().delete(Uri.parse("content://sms/conversations/"
// + threadId), null, null);
} else {
// receive
Log.i("SMS", "SMS RECIEVE");
int threadIdIn = cur.getInt(cur.getColumnIndex("thread_id"));
cr.delete(
Uri.parse("content://sms/conversations/" + threadIdIn),
null, null);
}
}
}
And the code registering the observer:
ContentResolver contentResolver = getContentResolver();
mSmsObserverHandler = new Handler();
mSmsProviderObserver = new SmsProviderObserver(mSmsObserverHandler);
contentResolver.registerContentObserver(Uri.parse("content://sms/"), true, mSmsProviderObserver);
Ok, seems there is no way, don´t know if it is my error on an Android bug but I got it working:
if( (type == 2 || type == 1) && (!lastID.contentEquals(cur.getString(cur.getColumnIndex("_id")))) ){
String protocol = cur.getString(cur.getColumnIndex("protocol"));
lastID = cur.getString(cur.getColumnIndex("_id"));
// Mensaje enviado
if(protocol == null){
Log.i("SMSStatus", "SMS Sent");
}
// Mensaje recibido
else{
Log.i("SMSStatus", "SMS received");
}
}
When an SMS is received it is type = 1, when send an SMS and its type 6, 4 and finally when it is sent is type = 2. Be carefull because sometimes the onChange method is called lots of times no matters if it is only one SMS so you should detect if it is the same SMS by checking the _id parameter.
What I want to do is to have a Service with more than one ContentObserver registered and check which ContentObserver triggers onChange() to do specific reactions. I dont know if I just have to include a if/else inside the onchange(), or Overwrite it to each ContentObserver, in either cases I wouldnt know exactly how to do it. Thanks in advance for any help.
public class SmsObserverService extends Service {
private String BABAS = "babas";
#Override
public void onCreate() {
Handler handler = new Handler();
this.getContentResolver().registerContentObserver(Uri.parse("content://sms/"), true, new SmsObserver(handler));
//Second observer
this.getContentResolver().registerContentObserver(Uri.parse("CallLog.Calls.CONTENT_URI"), true, new SmsObserver(handler));
}
#Override
public IBinder onBind(Intent intent) {
// TODO Put your code here
return null;
}
public class SmsObserver extends ContentObserver{
public SmsObserver(Handler handler) {
super(handler);
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
//Where I should check somehow which ContentObserver triggers the onChange
//This code to the sms log stuff, the call log part will be included
//when I find out how to check whic observer trigerred the onChange
Uri uri = Uri.parse("content://sms/");
Cursor cursor = getApplicationContext().getContentResolver().query( uri, null, null, null, null);
cursor.moveToNext();
String body = cursor.getString(cursor.getColumnIndex("body"));
String add = cursor.getString(cursor.getColumnIndex("address"));
String time = cursor.getString(cursor.getColumnIndex("date"));
String protocol = cursor.getString(cursor.getColumnIndex("protocol"));
if(protocol == null){
Toast.makeText(getApplicationContext(), "Enviada para: " +add + ", Hora: "+time +" - "+body, Toast.LENGTH_SHORT).show();
Log.i(BABAS, "Enviada para: "+add +" " +"Time: "+time +" - "+body);
}else{
Toast.makeText(getApplicationContext(), "Recebida de: "+add + ", Hora: "+time +" - "+body, Toast.LENGTH_SHORT).show();
Log.i(BABAS, "Recebida de: "+add +" " +"Time: "+time +" - "+body);
}
}
}
}
I'd simply extend ContentObserver and add whatever I am missing there.
mObserver = new ContentObserver(new Handler(Looper.getMainLooper())) {
#Override
public void onChange(boolean selfChange, Uri uri) {
super.onChange(selfChange, uri);
}
}
};
You can check uri with above method
How to receive broadcast when a user sends SMS from his Android phone? I am creating an application which is taking track of sent SMS and calls. I am done with the calls part, please help me with the SMS. Note that sms are sent by the phone not any application.
----------//solution-----------
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(VIEW_RESOURCE_ID);
SendSmsObserver smsObeserver = (new SendSmsObserver(new Handler()));
ContentResolver contentResolver = this.getContentResolver();
contentResolver.registerContentObserver(Uri.parse("content://sms"),true, smsObeserver);
}
public class SendSmsObserver extends ContentObserver {
public SendSmsObserver(Handler handler) {
super(handler);
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
// save the message to the SD card here
Log.d("sent sms", "one text send");
}
}
I found the answer
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(VIEW_RESOURCE_ID);
SendSmsObserver smsObeserver = (new SendSmsObserver(new Handler()));
ContentResolver contentResolver = this.getContentResolver();
contentResolver.registerContentObserver(Uri.parse("content://sms"),true, smsObeserver);
}
public class SendSmsObserver extends ContentObserver {
public SendSmsObserver(Handler handler) {
super(handler);
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
// save the message to the SD card here
Log.d("sent sms", "one text send");
}
}
You could build on CallLog. The CallLog provider contains information about placed and received calls.
The Following code can work
Cursor c = null; try {
c = getContentResolver().query(CallLog.Calls.CONTENT_URI, null, null, null, null);
if (c != null && c.moveToFirst()) {
do {
int duration = c.getInt(c.getColumnIndex(CallLog.Calls.DURATION));
// do something with duration
} while (c.moveToNext());
} } finally {
if (c != null) {
c.close();
} }
--------------------------ADDED NEW SOLUTION------------------------
Have a look at:
http://groups.google.com/group/android-developers/browse_thread/thread/9bc7d7ba0229a1d2
and :
http://code.google.com/p/android/issues/detail?id=914
Basically, you can do it by registering a content observer on the SMS
message store.Try
this:
ContentResolver contentResolver = this.getContentResolver();
contentResolver.registerContentObserver(Uri.parse("content://sms"),true, smsObeserver);
Is it possible to intercept outgoing SMS before it is actually sent, get its contents then ignore / send it according to some criteria?
eg. block all international text (numbers with leading 00), but allow everything else.
Incoming SMS
You can intercept an incoming sms thru sms listener using Broadcast receiver.You can modify the incoming sms or destroy it so that it does not reaches inbox.
Outgoing SMS
You can listen for outgoing sms by putting content observer over content://sms/out but you can not modify it with the native sms app.You can obviously modify the content of content://sms/out but it has no point.
Based on what I've been able to find, it seems as though the answer is either, "It's impossible" or, that it could be possible, but you'd need to write your own SMS app, so that you received the text before it became an SMS, and then you could perform whatever checks you'd like on it before calling the API to actually queue it to be sent.
Sorry =(
As far as I know, you can spy on outgoing SMS messages but you cannot stop them from being sent out.
Here's how you can detect the outgoing SMS messages:
Listen outgoing SMS or sent box in Android
But since this is done basically by reading from a database, I doubt you can stop the SMS from leaving.
I wish you good luck.
Emmanuel
This is what i have done to make an OutgoingSMSReceiver hope it helps some one some dya!
public final class OutgoingSMSReceiver extends Service {
private static final String CONTENT_SMS = "content://sms/";
private CallerHistoryDataSource database = new CallerHistoryDataSource(UCDGlobalContextProvider.getContext());
static String messageId="";
private class MyContentObserver extends ContentObserver {
public MyContentObserver() {
super(null);
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
Uri uriSMSURI = Uri.parse(CONTENT_SMS);
Cursor cur = UCDGlobalContextProvider.getContext().getContentResolver().query(uriSMSURI, null, null, null, null);
// this will make it point to the first record, which is the last SMS sent
cur.moveToNext();
String message_id = cur.getString(cur.getColumnIndex("_id"));
String type = cur.getString(cur.getColumnIndex("type"));
if(type.equals(Constants.SMS_TYPE_OUTGOING)){
/**
* onChange is fired multiple times for a single SMS, this is to prevent multiple entries in db.
*
*/
if(!message_id.equals(messageId))
{
String content = cur.getString(cur.getColumnIndex("body"));
String msisdnWithCountryCodeOrPrefix = cur.getString(cur.getColumnIndex("address"));
String msisdn = MSISDNPreFixHandler.fixMsisdn(msisdnWithCountryCodeOrPrefix);
Sms sms = new Sms();
sms.setType(Constants.SMS_TYPE_OUTGOING);
sms.setMsisdn(msisdn);
sms.setContent(content);
Log.i("MyContentObserver", "Sent SMS saved: "+content);
}
messageId = message_id;
}
}
#Override
public boolean deliverSelfNotifications() {
return false;
}
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
MyContentObserver contentObserver = new MyContentObserver();
ContentResolver contentResolver = getBaseContext().getContentResolver();
contentResolver.registerContentObserver(Uri.parse(CONTENT_SMS),true, contentObserver);
//Log.v("Caller History: Service Started.", "OutgoingSMSReceiverService");
}
#Override
public void onDestroy() {
//Log.v("Caller History: Service Stopped.", "OutgoingSMSReceiverService");
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
//Log.v("Caller History: Service Started.", "OutgoingSMSReceiverService");
/**
* Constant to return from onStartCommand(Intent, int, int): if this service's process is killed while it is started
* (after returning from onStartCommand(Intent, int, int)), then leave it in the started state but don't retain this delivered intent.
* Later the system will try to re-create the service. Because it is in the started state, it will guarantee to call
* onStartCommand(Intent, int, int) after creating the new service instance; if there are not any pending start commands to be
* delivered to the service, it will be called with a null intent object, so you must take care to check for this.
* This mode makes sense for things that will be explicitly started and stopped to run for arbitrary periods of time, such as a
* service performing background music playback.
*/
return START_STICKY;
}
#Override
public void onStart(Intent intent, int startid) {
Log.v("Caller History: Service Started.", "OutgoingSMSReceiverService");
}
}
Based on "Saad Akbar" response , i make it work but only with rooted device with permission MODIFY_PHONE_STATE
public class OutgoingSMSReceiver extends Service
{
private static final String CONTENT_SMS = "content://sms/";
static String messageId = "";
private class MyContentObserver extends ContentObserver
{
Context context;
private SharedPreferences prefs;
private String phoneNumberBlocked;
public MyContentObserver(Context context) {
super(null);
this.context = context;
}
#Override
public void onChange(boolean selfChange)
{
super.onChange(selfChange);
prefs = context.getSharedPreferences("com.example.testcall", Context.MODE_PRIVATE);
phoneNumberBlocked = prefs.getString("numero", "");
Uri uriSMSURI = Uri.parse(CONTENT_SMS);
Cursor cur = context.getContentResolver().query(uriSMSURI, null, null, null, null);
if (cur.moveToNext())
{
String message_id = cur.getString(cur.getColumnIndex("_id"));
String type = cur.getString(cur.getColumnIndex("type"));
String numeroTelephone=cur.getString(cur.getColumnIndex("address")).trim();
if (numeroTelephone.equals(phoneNumberBlocked))
{
if (cur.getString(cur.getColumnIndex("type")).equals("6"))
{
ContentValues values = new ContentValues();
values.put("type", "5");
context.getContentResolver().update(uriSMSURI,values,"_id= "+message_id,null);
}
else if(cur.getString(cur.getColumnIndex("type")).equals("5"))
{ context.getContentResolver().delete(uriSMSURI,"_id=?",new String[] { message_id});
}
}
}
}
#Override
public boolean deliverSelfNotifications()
{
return false;
}
}
#Override
public void onCreate()
{
MyContentObserver contentObserver = new MyContentObserver(getApplicationContext());
ContentResolver contentResolver = getBaseContext().getContentResolver();
contentResolver.registerContentObserver(Uri.parse(CONTENT_SMS), true, contentObserver);
}
}
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />