Getting AND Displaying Contacts - android

Well, I've been looking around and can't find a specific way to actually DISPLAY the contacts list. I've found tutorials such as higher pass's but it never actually discusses how to display them, just how to get them. I simply want to display the contacts list in a listView or something similar. I know it has to be a lot more simple than I'm making it out to be, because it seems to be a common thing. Specifically, all I want is the contact's name and phone numbers. I have my query set up, which I got the above mentioned tutorial, and I think it's right:
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) {
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
}
pCur.close();
}
}
}

There is a built-in activity for this:
startActivity(new Intent(Intent.ACTION_VIEW, ContactsContract.Contacts.CONTENT_URI));
If you use startActivityForResult(), you can even get the user's chosen contact back.
If that's not what you're looking for, you want to cut back to a single query if possible, then create an Adapter for your ListView. Here is a sample project that shows querying the contacts to populate a ListView, showing either the contact's name, name and phone number, or name and email address. This gets a bit more complicated because the sample shows both the Android 1.6-and-lower and Android 2.0-and-higher contacts APIs.

Related

How to display phone contacts in a listview

I am using contact provider to get all the all the phone numbers and names and displaying these in a listview.
Almost 4500 contacts are there in my phone.
It is taking almost 2-3 minutes to load all names and phone numbers .
Any suggestion how to reduce the loading time
Thanks
Ajeet
You can use content provider for this
ListAdapter list;
list=readContacts();
ListView lv=(ListView) findViewById(R.id.listView1);
lv.setAdapter(list);
And the readContacts() is
public ListAdapter readContacts(){
ContentResolver cr = getContentResolver();
ListAdapter cd = new ArrayList<Contact_getActivity>();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, ContactsContract.Contacts.DISPLAY_NAME);
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) {
// 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));
// if (!Utils.isEmpty(phone)) {
// cd.add(new ContactData(id, name, phone));
// }
}
pCur.close();
}
}
}
return cd;
}
You should take a look at Loaders because they make it easy to asynchronously load data in an activity or fragment! It has many advantages as clearly mentioned in the official document here. The doc also has an example to load contacts.
I know this is not a direct answer to your question but you could load a certain amount of contacts, show them in a list and load the remaining contacts in a background thread. When the user scrolls to the end of the list with, for example, 20 contacts, you add the newly loaded 20 contacts. I think this technique is called paging but I'm not sure :)
Show only a few contacts at a time (Suppose 100 contacts).
When the user scrolls down the list, load another 100 and so on.
Just like Facebook new feed feature.
It loads a few news at one go and loads another when you scroll down further.
According to me this is the best option for optimising your application.

Getting Contact Name Using This Implementation

I'm trying to use the implementation of the code found in this question post: How to read contacts on Android 2.0 but I can't figure out how to get it also run through the given, family, or display name columns. How can I get this implementation (the large one in the linked question) to give me the given and display names of the contacts as it loops through each row? I want to use this implementation specifically because it loops through the specified columns in each row and returns the information in the order it is in the row.
Here is the implementation from the other question that I'm referring to:\
Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null);
while (cursor.moveToNext()) {
String contactId = cursor.getString(cursor.getColumnIndex(
ContactsContract.Contacts._ID));
String hasPhone = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if (Boolean.parseBoolean(hasPhone)) {
// You know it has a number so now query it like this
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId, null, null);
while (phones.moveToNext()) {
String phoneNumber = phones.getString(phones.getColumnIndex( ContactsContract.CommonDataKinds.Phone.NUMBER));
}
phones.close();
}
Cursor emails = getContentResolver().query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = " + contactId, null, null);
while (emails.moveToNext()) {
// This would allow you get several email addresses
String emailAddress = emails.getString(
emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
}
emails.close();
}
cursor.close();
First of all, the answer in the linked post is a bit obsolete, because there now is documentation for Contacts Provider at developer.android.com.
Second, the problem you're having is that you're querying the "data" table with a contact ID for the contacts table, and that won't work.
The Contacts Provider is a three-tiered arrangement of tables. The top level is the Contacts table, whose constants are defined in ContactsContract.Contacts. One of its columns is
ContactsContract.Contacts._ID, which identifies a contact row. HOWEVER, a row in this table is an aggregation of individual contacts from various sources.
The individual contacts are stored in ContactsContract.RawContacts. For each ContactsContract.Contacts._ID, there can be more than one row in ContactsContract.RawContacts.
For each row in ContactsContract.RawContacts, there are one or more rows in ContactsContract.Data. Each row has a MIME type that tells you what type of data it is. For example, a row in ContactsContract.RawContacts can have three rows in ContactsContract.Data that have the MIME type for phone numbers. Each of the three "data" rows is a different type of phone number (home, mobile, work) for the contact in ContactsContract.RawContacts.
You can see why looking for ContactsContract.Contacts._ID in ContactsContract.Data won't work; that's the wrong ID to look for.
Rather than re-write the documentation here, I suggest you take a look at it. It has some nice illustrations that help explain what I'm getting at:
Contacts Provider

how to store contacts(name and mobile no) in hash maparraylist

I want to store contact information in an arraylist hash map so that i writ that information in .csv file.
I am able to get contact information but how to make consistency means if i store information "name" in an array and contactno also in array than if any name not contains any contactno then inconsistency would occurs so please tell me how to overcome this.
My code is:
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));
name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
//Query phone here. Covered next
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
// Do something with phones
String phoneno = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
//Log.i("phonenos",phoneno);
}
pCur.close();
}
}
}
}
I don't quite get the question, could you explain it a little better, than I might be able to help.
You want 2 Hashmaps, 1 with contact his name, one with their number, and then you have problems when a contact hasn't got a number or..?
edit:
If you're looking for exporting into an csv, you should see this related topic
Android - Generate CSV file from table values
Hope this helps.

Android contact info including facebook etc. contacts

I am using the following code. In my app user can choose from contacts to view there contact info (app jumps to the respective contact info).
This is the result of the code:
User clicks on someone whose data was in the phone: app jumps to the contact info
User clicks on someone whose data was imported from facebook: if this is the first run of the app, it force closes. If user had previously clicked on someone whose data had been in the phone (added manually), it shows his/her contact info.
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 (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
{
if (name_contact.equals(myArr2_cs[item]))
{
Toast.makeText(getApplicationContext(), "NAME2: " + name_contact, Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(), "ID2: " + id_contact, Toast.LENGTH_SHORT).show();
if (Integer.parseInt(cur.getString(
cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
{
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?", new String[]{id_contact}, null);
id_contact2 = id_contact;
}
}
}
}
Toast.makeText(getApplicationContext(), "id_contact: " + id_contact2, Toast.LENGTH_SHORT).show();
Intent intent_contacts = new Intent(Intent.ACTION_VIEW, Uri.parse("content://contacts/people/" + id_contact2));
startActivity(intent_contacts);
}
Here i found that accessing facebook contacts is permitted. The guy also says that "I fetch an cache all contact names/id mappings via FB Graph api (http://graph.facebook.com/me/friends) and use that for the id lookup.". What does that mean?
If i cannot resolve this issue, my program looks lame. 500 contacts appear in the app but the app jumps only in case of around 40 to the contact info. In the last 460 cases it's not working.
I managed to solve this problem. It turned out the query included only those who has phone number, but my list included everyone. This is why the run resulted in force close and false results. I had to remove those two lines with HAS_PHONE_NUMBER and everything is working fine.

contacts in android

I want to get all phone contacts from device in android.i have used the following code.but the problem is it takes more time to return the results.is there any solution?
ContentResolver cr = getContentResolver();
int index=0;
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if (cur.getCount() > 0)
{
phoneNames=new String[cur.getCount()];
phoneNumbers=new String[cur.getCount()];
while (cur.moveToNext())
{
String id = cur.getString(
cur.getColumnIndex(ContactsContract.Contacts._ID));
name = cur.getString(
cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
{
phoneNames[index]=name;
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext())
{
phoneIndex++;
phoneNumbers[index] = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
index++;
}
pCur.close();
}
}
After reading the code i assume that what you want is a list of contacts with DISPLAY NAMES and their respective phone numbers.
If you are specifically looking for data related to phone numbers i suggest you query on
android.provider.ContactsContract.PhoneLookup and fetch the results using a single cursor.
The following are the fields that you would be interested in:
DISPLAY_NAME
HAS_PHONE_NUMBER
NUMBER
TYPE
e.g
Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
resolver.query(uri, new String[]{PhoneLookup.DISPLAY_NAME,...
Further details please refer this
Please post your requirement if the assumptions are not true.
Some of quick checks:
Select only the required columns and not all in the first query.
Instead of using Integer.parseInt(cur.getString) use
cur.getInt()
Use PhoneLookup whenever dealing with phone numbers ( the number
field gives the raw phone number
instead of the value stored in
the database which can contain
-,),( appended with it)
Avoid using Cursor within a cursor. Use the API's which includes
joins already implemented in it like
RawContactsEntity, PhoneLookup.
Hope that helps.
Don't do complex database queries on the UI thread. What are you trying to do with the results? If you are displaying things in a list, use a CursorAdapter so that you only pull out what you need when you need it.

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