ContentObserver for contact update manually

问题

I have registered a ContentObserver from service and I get the onchange() function when there is update in phone like call or contact update. But I want the onchange() function to be called only when add, update or delete happens. But I don't want when call is incoming or outgoing. So can anybody tell me which URI I can register in contentObserver? My code is here

getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true,new Contact_change());

and Contact_change.java class is like

public class Contact_change extends ContentObserver{

  public Contact_service() {
    super(null);
  }

  @Override
  public void onChange(boolean selfChange){
    Log.i("contact_service","onchange");
    Super.onChange(selfChange);
   }

 @Override   
 public boolean deliverSelfNotifications() {
  return true;
  }

}

Edit:
I have one more problem is that after stop the service if I made change in contact then also onchange() function is called. So how can I stop that or un register the contentobserver.

回答1:

I used the ContactsContract.Contacts.CONTENT_VCARD_URI as mentioned here.

And also you could set a threshold_time like the one mentioned here

Its a bit more efficient.

回答2:

In order to stop receiving notifications from ContentObserver, you must unregister it.

Create an instance of ContentObserver which you can use later to register/unregister.

Contact_change changeObserver = new Contact_change();

getContentResolver().registerContentObserver(ContactsContract.Contacts.CONTENT_URI, true,changeObserver);

Unregister observer:

getContentResolver().unregisterContentObserver(changeObserver);

来源：https://stackoverflow.com/questions/12244140/contentobserver-for-contact-update-manually

标签

android

contactscontract