How to listen contact inserted/updated/deleted in address book
Solution 1
The thing about onChange
is that it gets called both for delete/add/update so you can't just count the number of contacts since one might have been deleted and one added then you have a changed contact book, but same count. However looking at the version column you should be able to assess which contact is updated or not (after you've obtained one complete copy of the contact book already). Simply check if the version is greater than the one you have already (for the current contact).
Solution 2
In accordance with Magnus' answer, use this column to retrieve the version code
ContactsContract.RawContacts.VERSION
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Comments
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moDev over 1 year
There are lots of questions related to it but none of them help me to get the solution.
I am trying to sync all contacts from device to remote server and able to do it easily but when there is a change in contact like update/delete/insert(new contact) unable to find the solution.
Tried using
ContentObserver
butonChange()
is getting called multiple times. It's difficult to find the contact changes data.public class ContactService extends Service { private int mContactCount; @Override public IBinder onBind(Intent arg0) { return null; } @Override public void onCreate() { super.onCreate(); mContactCount = getContactCount(); Log.d("Contact Service", mContactCount + ""); this.getContentResolver().registerContentObserver( ContactsContract.Contacts.CONTENT_URI, true, mObserver); } private int getContactCount() { Cursor cursor = null; try { cursor = getContentResolver().query( ContactsContract.Contacts.CONTENT_URI, null, null, null, null); if (cursor != null) { return cursor.getCount(); } else { return 0; } } catch (Exception ignore) { } finally { if (cursor != null) { cursor.close(); } } return 0; } private ContentObserver mObserver = new ContentObserver(new Handler()) { @Override public void onChange(boolean selfChange) { super.onChange(selfChange); final int currentCount = getContactCount(); if (currentCount < mContactCount) { // CONTACT DELETED. Log.d("Contact Service", currentCount + ""); } else if (currentCount == mContactCount) { // CONTACT UPDATED. og.d("Contact Service", currentCount+""); } else { // NEW CONTACT. Log.d("Contact Service", currentCount + ""); } mContactCount = currentCount; } }; @Override public int onStartCommand(Intent intent, int flags, int startId) { return START_STICKY; } @Override public void onDestroy() { super.onDestroy(); getContentResolver().unregisterContentObserver(mObserver); } }
But
onChange()
getting called more than once when there is a update/insert into address book.can anyone provide me better solution to it?
It would be highly appreciated.
Thanks
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moDev about 10 yearsis there way a to prevent onChange for getting called only one time whenever there is a insert/update/delete of a contact?
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Magnus about 10 yearsYou can throttle the onchange calls yourself (filter the calls) by say only accepting one call during a specific time frame or receive all but decide yourself that every five seconds you should send onchange to your own code.
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moDev about 10 yearsis there any way to fetch contacts based on their status like new contact, updated contact or deleted contact?
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Torsten Ojaperv about 9 yearsUpvoted for the sole reason of using contact version to detect changes.
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Rajesh Satvara about 7 yearshow to use it ?? any example for it..!! because ContactsContract.SyncColumns is an interface and i'm unable to access it.. help plx