Develop Reference

Android content provider query not retrieving updated information

So I've written a query to extract the WhatsApp contacts of a phone. My initial query goes like this:
Cursor c = con.getContentResolver().query(
ContactsContract.RawContacts.CONTENT_URI,
new String[]{ContactsContract.RawContacts.CONTACT_ID, ContactsContract.RawContacts.DISPLAY_NAME_PRIMARY},
ContactsContract.RawContacts.ACCOUNT_TYPE + "= ?",
new String[]{"com.whatsapp"},
null
);
ArrayList<String> myWhatsappContacts = new ArrayList<String>();
int contactNameColumn = c.getColumnIndex(ContactsContract.RawContacts.DISPLAY_NAME_PRIMARY);
while (c.moveToNext()) {
// You can also read RawContacts.CONTACT_ID to read the
// ContactsContract.Contacts table or any of the other related ones.
myWhatsappContacts.add(c.getString(contactNameColumn));
}
The purpose of this is to find out how many WhatsApp contacts the phone has at any one time. When I do:
Log.i("WhatsApp contacts found:", Integer.toString(myWhatsappContacts.size());
It should print out how many WhatsApp contacts there were into LogCat. And this works - up to a point.
Let's say for example that the number of WhatsApp contacts I have now is 101. The next phase of this little project is to delete away ALL contacts if there are more than 100 of them. In which case, we go:
if (myWhatsappContacts.size() > 100) {
//Delete all contacts code here
}
I've tested the delete contacts code, it works. I check the contacts directory of the phone via the contacts app, and it says 0. But now when I do the query again (refer to code above), it still shows 101! What's going on?
If it helps, my DeleteContacts method is as follows:
private void deleteContact(Context ctx, String phone, String name) {
Uri contactUri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phone));
Cursor cur = ctx.getContentResolver().query(contactUri, null, null, null, null);
try {
if (cur.moveToFirst()) {
do {
if (cur.getString(cur.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME)).equalsIgnoreCase(name)) {
String lookupKey = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_LOOKUP_URI, lookupKey);
ctx.getContentResolver().delete(uri, null, null);
return;
}
} while (cur.moveToNext());
}
} catch (Exception e) {
System.out.println(e.getStackTrace());
} finally {
cur.close();
}
return;
}
What am I doing wrong? Is my DeleteContacts code faulty? Or is the query itself faulty?

Frequent queries on android contacts returns null

I'm using the following code segment to get phone numbers of a contact by contact ID
private static ArrayList<PhoneName> getPhonesFromID(Context context,
String contactID, String column) {
// Run query
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.CommonDataKinds.Phone._ID,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone.STARRED,
ContactsContract.CommonDataKinds.Phone.TYPE };
String selection = column + " = '" + contactID + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.CommonDataKinds.Phone.NUMBER
+ " COLLATE LOCALIZED ASC";
Cursor cursor = context.getContentResolver().query(uri, projection,
selection, selectionArgs, sortOrder);
if (cursor == null)
return null;
int numberIndex = cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
int nameIndex = cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
int typeIndex = cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE);
int favIndex = cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.STARRED);
ArrayList<PhoneName> phones = new ArrayList<PhoneName>();
while (cursor.moveToNext()) {
PhoneName pn = new PhoneName();
pn.name = cursor.getString(nameIndex);
pn.number = cursor.getString(numberIndex);
pn.starred = cursor.getString(favIndex);
pn.state = DataHelper.getInstance(context)
.getSubscriptionStateByNumber(pn.number);
Log.d("Number", pn.number);
int type = cursor.getInt(typeIndex);
if (type == ContactsContract.CommonDataKinds.Phone.TYPE_HOME) {
pn.type = "Home";
} else if (type == ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE) {
pn.type = "Mobile";
} else if (type == ContactsContract.CommonDataKinds.Phone.TYPE_WORK) {
pn.type = "work";
} else {
pn.type = "other";
}
phones.add(pn);
}
cursor.close();
return phones;
}
Here's PhoneName is my self-defined class to store contact information of that specific contact. This function is called like:
getPhonesFromID(context, _id,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID);
I'm getting the contact information correctly but here's the problem, sometimes this function returns null when I make frequent queries. When this problem occurs, default people application of my android don't show any contact too. All contacts are like vanished. Then if I close my application and restart then it shows all contacts like before. Then again when I go to the contact details of a contact from my application it works fine several times and then all contacts are gone again.
This is a weird problem and I don't know actually what is happening here. I double checked my queries and couldn't figure out what's wrong in here.

Finally, this problem got solved.
Like I said, my application is like Phonebook and I had to show a favourite icon for each contact in the list which is my favourite contact. In my case, I had a function like isFavourite() to determine if a contact is in my favourite list or not and this is called in every single time when a contact row is loading.
Each time I open a cursor to get the query result and it was found that the cursor was not closed anywhere. So basically, closing the cursor properly solved the problem! Cheers!

Get Contacts mobile number only

There have been several questions on SO regarding getting Contacts numbers using the Contacts API but I'd like to know if there is a way to identify that the number retrieved is a mobile number.
The following code is often shown as a way to get a Contact's phone numbers, as it gets a list of one or more phone numbers:
String[] projection = {ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME, ContactsContract.Contacts.HAS_PHONE_NUMBER};
String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + "=1";
Cursor cursor = null;
Cursor phones = null;
try
{
cursor = managedQuery(intent.getData(), projection, selection, null, null);
while (cursor.moveToNext())
{
String contactId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
String name = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId,null, null);
while (phones.moveToNext())
{
String pdata = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
Log.v("DATA",pdata);
}
}
}
catch (NullPointerException npe)
{
Log.e(TAG, "Error trying to get Contacts.");
}
finally
{
if (phones != null)
{
phones.close();
}
if (cursor != null)
{
cursor.close();
}
}
Whilst, this works okay, is there any way to easily identify that the phone number is a mobile type (apart from trying to pattern match with Regex).
I suspect there must be a related piece of data, so that native apps can classify the phone number - as in the picture below:

I stumbled upon a blog article which gives a pretty good explanation of using the ContactsContract api here.
So, in my example above, I changed part of my code above to this:
while (phones.moveToNext())
{
int phoneType = phones.getInt(phones.getColumnIndex(Phone.TYPE));
if (phoneType == Phone.TYPE_MOBILE)
{
phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
phoneNumber = phoneNumber.replaceAll("\\s", "");
break;
}
}
This loops around all the phones for an individual contact and if the type is Phone.TYPE_MOBILE then it takes this one.
Hope this helps someone with the same issue I had.

The original query cursor = managedQuery(intent.getData(), projection, selection, null, null); should be able to handle filter for you. I am trying to do the same thing. I will post my findings when complete. If anyone knows how to do this using the selection clause in the third parameter. I would love to know the answer.

Android: strange thing about loading contact info

I created an app. It is working on htc desire hd, but when i tested it on ZTE Blade, a strange problem appeared. In my app when user selects a contact name from a spinner a menu appears. In the menu the user can send sms to the user, call him/her or just look at his/her contact info. On HTC Desire HD, everything is working fine. On ZTE there seems to be an exasperating problem with the contact info button: In certain cases when user selects a contact and wants to see his contact info, some other contact's info is shown. So I select Pete from my spinner but I get Dave's contact info. In other cases I select Tom from the spinner and I get Tom's contact info. The problem is not existing on my HTC. I couldn't figure out what causes the problem. By the way, my contact list on HTC is populated also from gmail and facebook and the app still working fine, while the contact list of the ZTE has never seen any gmail or facebook accounts (i am not entirely sure about this).
This is the code i am using to get to the contact info:
infobtn.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0)
{
while (cur.moveToNext()) {
id_contact = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
name_contact = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (name_contact.equals(name1))
{
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?", new String[]{id_contact}, null);
id_contact2 = id_contact;
while (pCur.moveToNext()){
}
pCur.close();
}
}
Intent intent_contacts = new Intent(Intent.ACTION_VIEW, Uri.parse("content://contacts/people/" + id_contact2));
startActivity(intent_contacts);
}
}
});

I have similar problems in my application. The app is a widget that give possibility to use favorites contacts in fast way. User creates new widget and assigns contact to it. When he clicks on widget he is able to make common contact actions - call, sms, edit, etc.
Some users send report like this one:
"I select about 4 contacts and the app shows 4 but only one of them right 3 others is same contact which I didnt even picked".
"Why does the wrong contact show when picked? On my droid incredible"
I can't reproduce the problem on my side. I have tried several different devices, tried to make import/export contacts - no results.
Anyway, i have some ideas about source of the problem.
My application uses lookup keys to store contacts, according to sdk. So, when user picks up a contact, application stores contact lookup key. Then it uses this lookup key to get Contact ID for this contact. After that, it uses ONLY received Contact ID in all other functions. So does your function - it uses only Contact ID in sub-query.
The question is: is it possible that different contacts (with different lookup keys) have same Contact ID? It looks like it's possible on some devices in rare cases... If so, we need to use Contact ID + lookup key always together to identify contact. (update: the suggestion was incorrect. Lookup key can be changed after contact info modification, you won't find contact).
As I understand, you are able to reproduce the problem on your side. I would suggest to change your code in such way:
infobtn.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0)
{
while (cur.moveToNext()) {
id_contact = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
name_contact = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String lookup_key = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
if (name_contact.equals(name1))
{
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ? AND " + ContactsContract.CommonDataKinds.Phone.LOOKUP_KEY + " = ?", new String[]{id_contact, lookup_key}, null);
id_contact2 = id_contact;
while (pCur.moveToNext()){
}
pCur.close();
}
}
Intent intent_contacts = new Intent(Intent.ACTION_VIEW, Uri.parse("content://contacts/people/" + id_contact2));
startActivity(intent_contacts);
}
}
});
and try to reproduce the problem again.

You can see this link, It's very good: http://www.vtutorials.info/2014/08/working-with-android-contacts-how-to.html
private Map<Long, ArrayList<LocalContactInfo>> queryAllPhones(ContentResolver contentresolver)
{
HashMap<Long, ArrayList<LocalContactInfo>> hashmap = new HashMap<Long, ArrayList<LocalContactInfo>>();
Uri PhoneCONTENT_URI = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String Phone_CONTACT_ID = ContactsContract.CommonDataKinds.Phone.CONTACT_ID;
String NUMBER = ContactsContract.CommonDataKinds.Phone.NUMBER;
Cursor cursor = contentresolver.query(PhoneCONTENT_URI, null, null, null, null);
do
{
if (!cursor.moveToNext())
{
cursor.close();
return hashmap;
}
long l = cursor.getLong(cursor.getColumnIndex(Phone_CONTACT_ID));
String s = cursor.getString(cursor.getColumnIndex(NUMBER));
LocalContactInfo temp = new LocalContactInfo(String.valueOf(l), "", s, "", 1);
if (hashmap.containsKey(Long.valueOf(l))){
((List<LocalContactInfo>)hashmap.get(Long.valueOf(l))).add(temp);
} else{
ArrayList<LocalContactInfo> arraylist = new ArrayList<LocalContactInfo>();
arraylist.add(temp);
hashmap.put(Long.valueOf(l), arraylist);
}
} while (true);
}
And:
public List<LocalContactInfo> doloadContacts() {
List<LocalContactInfo> _return = new ArrayList<LocalContactInfo>();
Uri CONTENT_URI = ContactsContract.Contacts.CONTENT_URI;
String _ID = ContactsContract.Contacts._ID;
String DISPLAY_NAME = ContactsContract.Contacts.DISPLAY_NAME;
String HAS_PHONE_NUMBER = ContactsContract.Contacts.HAS_PHONE_NUMBER;
ContentResolver contentResolver = mContext.getContentResolver();
Map<Long, ArrayList<LocalContactInfo>> map = queryAllPhones(contentResolver);
Cursor cursor = contentResolver.query(CONTENT_URI, null,null, null, null);
if(cursor == null || cursor.getCount()==0){
return _return;
}
if (cursor.getCount() > 0) {
while (cursor.moveToNext()) {
Long contact_id = cursor.getLong(cursor.getColumnIndex( _ID ));
String fullname = cursor.getString(cursor.getColumnIndex( DISPLAY_NAME )).trim();
int hasPhoneNumber = Integer.parseInt(cursor.getString(cursor.getColumnIndex( HAS_PHONE_NUMBER )));
if (hasPhoneNumber > 0 && map.get(contact_id) != null){
Object obj = ((List<LocalContactInfo>)map.get(contact_id)).get(0);
if(obj instanceof LocalContactInfo){
LocalContactInfo _temp = (LocalContactInfo)obj;
_return.add(new LocalContactInfo(String.valueOf(contact_id), fullname, _temp.getNumberPhone(), "",hasPhoneNumber));
}
}
}
}
return _return;
}

instead of using "contacts/people/xxx", try using contactsContract.Contacts.CONTENT_URI.
basically, you want to replace.
Uri contactUri = Uri.parse("content://contacts/people/" + id_contact2));
with
Uri contactUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_URI,
id_contact2);
Another thing to note is that "id_contact2" may be changed if a sync occurs before you use it (like when google sync merges a contact). To prevent this, it might be better to use a LookupKey instead.
ContactsContract.Contacts.LOOKUP_KEY
and retrieve using
Uri contactUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_LOOKUP_URI,
yourContactLookupKey);

In Android, how do you select only PHONE contacts?

I am querying the Contacts out of the built in Contacts provider URI in Android. I want to get just the PHONE contacts; is there any consistent way to do this? It seems from what I can find that the account name for phone contacts differs from manufacturer to manufacturer (see this question). Is there a way to get PHONE contacts (not SIM, Facebook, Twitter or others) in a consistent, reliable, manufacturer- and device- agnostic way?

Cursor cursor = null;
try {
String selection = ContactsContract.Data._ID + " = ?";
String[] selectionArgs = new String[] { id };
String[] projection = new String[] { ContactsContract.PhoneLookup.NUMBER};
cursor = getContentResolver().query(
ContactsContract.Contacts.CONTENT_URI,
projection, selection, selectionArgs, null);
if (cursor == null || !cursor.moveToFirst())
return;
String phone = cursor.getString(0);
} finally {
if (cursor != null && !cursor.isClosed())
try {
cursor.close();
} catch (Throwable ignore) {
// Ignored.
}
}
Where "?" is user ID, you can put this code into a loop.