Develop Reference

Android: Contact list has duplicate names

I have a contact list in a sort order. But in my contact list the name is duplicating with same number. I think the issue is because of the contact list sync with different account.
I check with Hash map. But when I using hash map the result is not sorted with name .
private static final String[] PROJECTION = new String[] {
ContactsContract.CommonDataKinds.Phone.CONTACT_ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, PROJECTION,
null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " COLLATE NOCASE ASC");
if (cursor != null) {
try {
int nameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
String nameContact = cursor.getString(nameIndex);
finally {
cursor.close();
}
}
Adapter
holder.name.setText(itemListPogo.get(position).getItemName());
Can anyone please help to avoid the duplication in name.

You're seeing duplicate contacts because they belong to different accounts. i.e. Same number can show up 3 times if it is synced with Facebook, WhatsApp, and Google account. You can find more information here Android Account Manager
This is how you can use column ContactsContract.RawContacts.ACCOUNT_TYPE to filter and retrieve contacts associated with a single account only.
String[] projection = new String[] {
ContactsContract.RawContacts._ID,
ContactsContract.RawContacts.ACCOUNT_TYPE,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.PHOTO_URI,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Photo.CONTACT_ID };
String selectionFields = ContactsContract.RawContacts.ACCOUNT_TYPE + " = ?";
String[] selectionArgs = new String[]{"com.google"};
Cursor cursor = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
projection,
selectionFields,
selectionArgs,
ContactsContract.Contacts.DISPLAY_NAME
);
In this code, only contacts that are associated with Google Account are selected. Similarly, if you want to get list of WhatsApp Contacts only you can replace "com.google" with "com.whatsapp"

I will recommend you to use where my searching ends, it will give you fastest result.
public static List<ContactDTO> getPhone(Context context) {
List<ContactDTO> contactList = new ArrayList<ContactDTO>();
ContentResolver cr = context.getContentResolver();
String[] PROJECTION = new String[] {
ContactsContract.RawContacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.PHOTO_URI,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Photo.CONTACT_ID };
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String filter = ""+ ContactsContract.Contacts.HAS_PHONE_NUMBER + " > 0 and " + Phone.TYPE +"=" + Phone.TYPE_MOBILE;
String order = ContactsContract.Contacts.DISPLAY_NAME + " ASC";// LIMIT " + limit + " offset " + lastId + "";
Cursor phoneCur = cr.query(uri, PROJECTION, filter, null, order);
while(phoneCur.moveToNext()) {
ContactDTO dto = new ContactDTO();
dto.setName("" + phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
dto.setMobileNo("" + phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
dto.setPhotoUrl("" + phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI)));
dto.setContactId("" + phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Photo.CONTACT_ID)));
contactList.add(dto);
}
phoneCur.close();
return contactList;
}
where ContactDTO is Simple POJO class.

I think the issue is because of the contact list sync with different
account.
Yes, your contact list sync many account. You should filter contact with Account type : ContactsContract.CommonDataKinds.Phone.ACCOUNT_TYPE_AND_DATA_SET.
Account you can research in :
https://developer.android.com/reference/android/accounts/AccountManager.html

You can search for the aggregated Contact instead of all RawContacts. This will give you only 1 contact with the given name (like in the Contacts app).
Example (changing your code):
private static final String[] PROJECTION = new String[] {
ContactsContract.CommonDataKinds.Phone.CONTACT_ID,
ContactsContract.Contacts.DISPLAY_NAME_PRIMARY, // Honeycomb+ should use this
ContactsContract.CommonDataKinds.Phone.NUMBER
};
ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(
ContactsContract.Contacts.CONTENT_URI,
PROJECTION,
null,
null,
ContactsContract.Contacts.DISPLAY_NAME_PRIMARY + " COLLATE NOCASE ASC");
if (cursor != null) {
try {
int nameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME_PRIMARY);
String nameContact = cursor.getString(nameIndex);
finally {
cursor.close();
}
}
Source: https://developer.android.com/reference/android/provider/ContactsContract.Contacts.html

How to receive local contacts with emai addresses using the content resolver

I am developing an Android app and want to receive my local contacts. To be exact I want to display all contacts which have an email address. My current approach looks like this
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.Data;
private static final String[] CONTACT_PROJECTION = new String[] {
Email.CONTACT_ID,
Contacts.DISPLAY_NAME_PRIMARY,
Email.ADDRESS,
};
Cursor data = mResolver.query(Data.CONTENT_URI,
CONTACT_PROJECTION,
Data.MIMETYPE + "='" + Email.CONTENT_ITEM_TYPE + "'",
null, Contacts.DISPLAY_NAME_PRIMARY + " ASC");
The problem using this query is, that the result contains rows that doesn't match a contact in my local address book. Probably I used those email addresses before but didn't saved it to my address book.
I have already tried another approach where I made a query on Contacts.CONTENT_URI with Contacts._ID. This id is used as a foreign key to match the contacts in a second query against their emails. The solution was a nested cursor and the runtime was really slow. For a hundred contacts the query took more than two seconds to match. This is a reason for using the async CursorLoader but I want to avoid it if possible.
Any suggestions? Thanks in advance
#Edit 1:
Unfortunately both solutions don't archive the desired improvement.
For example, when I write a new email to a previous unknown address with my gmail app afterwards the address shows up in both querys with an contact id but not in my normal address book. This kind of "contacts" flood my query.
Could it be related to the value of ContactsContract.CommonDataKinds.Email.TYPE?
#Edit 2:
I found an interesting flag Contacts.IN_VISIBLE_GROUP + "=1". It seems to filter the unwanted addresses.
Has somebody any experience with it? I don't want to filter to much.

This is what I am using in my app:
public void readContacts(){
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
System.out.println("name : " + name + ", ID : " + id);
// get the phone number
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phone = pCur.getString(
pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
System.out.println("phone" + phone);
}
pCur.close();
// get email and type
Cursor emailCur = cr.query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?",
new String[]{id}, null);
while (emailCur.moveToNext()) {
// This would allow you get several email addresses
// if the email addresses were stored in an array
String email = emailCur.getString(
emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
String emailType = emailCur.getString(
emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));
System.out.println("Email " + email + " Email Type : " + emailType);
}
emailCur.close();
}
}
}
}

I have attached one of the functions used in my project. Point of intrest would be selection and selection args.
Snippet
selection = ContactsContract.CommonDataKinds.Email.DATA + " != ?";
selectionArgs = new String[]{""};
This says selection is based on email data and it should not be null.
Similarly you can add any of the selection params as per your need.
Entire Function
public Cursor getInitCursorLoader() {
String[] PROJECTION = null;
String selection = null;
String[] selectionArgs = new String[0];
String order = null;
Uri contentURI = null;
switch (mFriendType) {
case EMAIL:
PROJECTION = new String[]{
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.Contacts._ID,
ContactsContract.Contacts.PHOTO_ID,
ContactsContract.CommonDataKinds.Email.TIMES_CONTACTED,
ContactsContract.CommonDataKinds.Email.DATA};
selection = ContactsContract.CommonDataKinds.Email.DATA + " != ?";
selectionArgs = new String[]{""};
contentURI = ContactsContract.CommonDataKinds.Email.CONTENT_URI;
order = ContactsContract.CommonDataKinds.Email.TIMES_CONTACTED + " DESC";
break;
case SMS:
PROJECTION = new String[]{
ContactsContract.Contacts._ID,
ContactsContract.Contacts.PHOTO_ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.TIMES_CONTACTED,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone.TYPE};
selection = ContactsContract.CommonDataKinds.Phone.TYPE + " = ?";
selectionArgs = new String[]{String.valueOf(ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE)};
contentURI = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
order = ContactsContract.CommonDataKinds.Phone.TIMES_CONTACTED + " DESC";
break;
}
return mContext.getContentResolver().query(contentURI, PROJECTION, selection, selectionArgs, order);
}

Android Contacts._ID != Data.CONTACT_ID

I'm running a query against CommonDataKinds.Phone.CONTENT_URI and I'm getting all the results that have a NOT NULL phone id.
pretty much the code is :
String[] projection2 = new String[] {
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID,
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
};
String where2 = ContactsContract.CommonDataKinds.Phone._ID + " != ''" ;
Cursor phoneCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
projection2, where2, null, null);
and then I iterate through each cursor result and getting the columns I want.
The code is :
if (phoneCursor.getCount() > 0) {
while (phoneCursor.moveToNext()) {
String contacts_id = phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.Contacts._ID));
String phone_id = phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));
Log.i("phonecursor", "contacts_id= " + contacts_id + " phone_id " + phone_id
+ " contacts_name= " + contacts_name + " phone_name= " + phone_name
+ " Phone= " + phone );
}
phoneCursor.close();
}
What I dont get is why Phone.CONTACT_ID is different from the corresponding Contacts._ID from the same row...
Shouldn't both be the same? There are a lot of examples that use those exact columns to run queries. For example here and here if you check the Key pointers.

ContactsContract.Contacts._ID returns unique ID for a row
This is very good example
Image from Get Contact Emails By Content Provider - Android Example

ContactsContract.Contacts._ID returns unique ID for a row.
Now the output will vary based on which cursor you are querying ContactsContract.Contacts._ID.
If you query ContactsContract.Contacts._ID from ContactsContract.Contacts.CONTENT_URI , you will get ContactsContract.Contacts._ID and ContactsContract.CommonDataKinds.Phone.CONTACT_ID same.
But if you query ContactsContract.Contacts._ID from ContactsContract.CommonDataKinds.Phone.CONTENT_URI you will get ContactsContract.Contacts._ID and ContactsContract.CommonDataKinds.Phone.CONTACT_ID different as on each phone entry ContactsContract.Contacts._ID is incremented.
So if you want same _ID and Phone._ID then query from ContactsContract.Contacts.CONTENT_URI instead of ContactsContract.CommonDataKinds.Phone.CONTENT_URI

Get a contact's groups?

I'm trying to make a many-to-many mapping of contacts to groups.
For example, if I have:
User 1, belongs to group 701, 702, 704
User 2, belongs to no groups
User 3, belongs to group 702
I'm hoping to get a relation that looks like this:
userID | groupID
1 | 701
1 | 702
1 | 704
3 | 702
I've tried this:
Cursor cursor = contentResolver.query(ContactsContract.Data.CONTENT_URI, null, new String[] {
ContactsContract.CommonDataKinds.GroupMembership.CONTACT_ID,
ContactsContract.CommonDataKinds.GroupMembership.GROUP_SOURCE_ID
}, null, null, null);
But that doesn't quite work. The GROUP_SOURCE_ID column returns weird numbers that aren't the ID of any groups. Sometimes it even returns 0 or a negative number.
I could construct a mapping of this by going through each group, and finding all contacts in that group, but that would take a lot of queries, and I'm trying to stay fast (apparently, just those few queries are quite slow!).
Can anyone tell me how I can get this contacts-to-groups mapping in one query?
Thanks!

Cursor dataCursor = getContentResolver().query(
ContactsContract.Data.CONTENT_URI,
new String[]{
ContactsContract.Data.CONTACT_ID,
ContactsContract.Data.DATA1
},
ContactsContract.Data.MIMETYPE + "=?",
new String[]{ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE}, null
);
By using this dataCursor you will get the contact_id and group_id of all contacts in the contact database.
Cursor groupCursor = getContentResolver().query(
ContactsContract.Groups.CONTENT_URI,
new String[]{
ContactsContract.Groups._ID,
ContactsContract.Groups.TITLE
}, null, null, null
);
By using this groupCursor you will get the group_id and group_title of all groups in the contact database.
So if you want to get all groups associated with a contact_id the first get the dataCursor using suitable select statements. Using dataCursor you can get all the group_id associated with that contact_id. Now using groupCursor you can get the information about all groups associated with that specific contact.

A complete answer will be:
First the fetch the group cursor (same as the answer above)
Cursor groups_cursor= getContentResolver().query(
ContactsContract.Groups.CONTENT_URI,
new String[]{
ContactsContract.Groups._ID,
ContactsContract.Groups.TITLE
}, null, null, null
);
Store all the group_id and group_title in a groups HashMap using this code:
if(groups_cursor!=null){
while(groups_cursor.moveToNext()){
String group_title = groups_cursor.getString(1);
String id = groups_cursor.getString(0);
groups.put(id, group_title);
}
}
Then using the above answer's data_cursor, fetch contacts_ids and their group_ids.
Cursor dataCursor = getContentResolver().query(
ContactsContract.Data.CONTENT_URI,
new String[]{
ContactsContract.Data.CONTACT_ID,
ContactsContract.Data.DATA1
},
ContactsContract.Data.MIMETYPE + "=?",
new String[]{ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE}, null
);
Now using the dataCursor and the groups HashMap.
if(dataCursor!=null){
while(dataCursor.moveToNext()){
String id = dataCursor.getString(0);
String group_id= dataCursor.getString(1);
String groupTitle = groups.get(group_id);
Log.d(TAG, "groupTitle : " + groupTitle + " contact_id: " + id );
}
}

public static HashMap<String, String> getContactsForGroup(String groupID, Activity activity){
Cursor dataCursor = activity.getContentResolver().query(
ContactsContract.Data.CONTENT_URI,
new String[]{ // PROJECTION
ContactsContract.Data.CONTACT_ID,
ContactsContract.Data.DISPLAY_NAME, // contact name
ContactsContract.Data.DATA1 // group
},
ContactsContract.Data.MIMETYPE + " = ? " + "AND " + // SELECTION
ContactsContract.Data.DATA1 + " = ? ", // set groupID
new String[]{ // SELECTION_ARGS
ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE,
groupID
},
null
);
dataCursor.moveToFirst();
HashMap<String, String> map = new HashMap<>();
while (dataCursor.moveToNext()) //
{
String s0 = dataCursor.getString(0); //contact_id
String s1 = dataCursor.getString(1); //contact_name
String s2 = dataCursor.getString(2); //group_id
Log.d("tag", "contact_id: " + s0 + " contact: " + s1 + " groupID: "+ s2);
map.put(s0, s1);
}
return map;
}

Android get a cursor only with contacts that have an email listed >android 2.0

i have the following code to get contacts from content provider
String[] columns = new String[] {
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.Contacts._ID,
ContactsContract.Contacts.PHOTO_ID };
Cursor cursor = managedQuery(ContactsContract.Contacts.CONTENT_URI,
columns, null, null, null);
and i use this one to get the emails for a specific contact by their id:
Cursor emails = getContentResolver().query(
ContactsContract.CommonDataKinds.Email.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Email.CONTACT_ID
+ " = " + contact.getContactId(), null, null);
my current implementation passes every row in the cursor and aquires its emails and stores them in an arrayList of java objects.
what i was wondering if it was possible to do is just query the content provider and return a cursor of just contacts with ids/name etc that have an email address listed.
this way has a long waiting period for getting the contact list. i am using this list for a list adapter. if i can get only the contacts that have an email i can use a cursor adapter in my list.
Is something like this possible? how can i speed up the process?

#CapDroid
Fixed working code from DArkO's post:
ContentResolver cr = context.getContentResolver();
String[] PROJECTION = new String[] { ContactsContract.RawContacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.Contacts.PHOTO_ID,
ContactsContract.CommonDataKinds.Email.DATA,
ContactsContract.CommonDataKinds.Photo.CONTACT_ID };
String order = "CASE WHEN "
+ ContactsContract.Contacts.DISPLAY_NAME
+ " NOT LIKE '%#%' THEN 1 ELSE 2 END, "
+ ContactsContract.Contacts.DISPLAY_NAME
+ ", "
+ ContactsContract.CommonDataKinds.Email.DATA
+ " COLLATE NOCASE";
String filter = ContactsContract.CommonDataKinds.Email.DATA + " NOT LIKE ''";
Cursor cur = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, PROJECTION, filter, null, order);
Your cursor will have essential IDs as well as names and email addresses. The performance of this code is great because it requests few columns only.

I solved this one, here is how its done:
UPDATE
String[] PROJECTION = new String[] { ContactsContract.RawContacts._ID,
ContactsContract.Contacts.DISPLAY_NAME, ContactsContract.Contacts.PHOTO_ID,
Email.DATA, ContactsContract.CommonDataKinds.Photo.CONTACT_ID };
String order = " CASE WHEN " + ContactsContract.Contacts.DISPLAY_NAME
+ " NOT LIKE '%#%' THEN 1" + " ELSE 2 END, "
+ ContactsContract.Contacts.DISPLAY_NAME + " COLLATE NOCASE";
String filter = Email.DATA + " NOT LIKE '' ) GROUP BY ( " + Email.DATA;
return mContent.query(Email.CONTENT_URI,
PROJECTION, filter, null, order);