I am populating contact list details to list view successfully. My code:
String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
Cursor curLog = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null,order);
How can I avoid the duplicate data In List view as the contact details is repeating if its joined contact i.e. joined with both phone and Google?. The screen is like
I want to select programmatically only 1 name not the both? Any Idea how I can select?
I have used a rough way to avoid this problem which helped me so much and working nicely.
i.e
Use local database (SQLite) to avoid duplicate data by make phone number to unique.
I have made one SQLite DB to handle this problem:
ContactMerger.java:
public class ContactMerger {
private static final String CONTACT_TABLE = "_contact_table";
private static final String CONTACT_ID = "_contactId";
private static final String CONTACT_NAME = "_contactName";
private static final String CONTACT_MOBILE_NUMBER = "_contactNumber";
private static final String CONTACT_DATE = "_contactDate";
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "DB_Contact";
private final Context context;
private SQLiteDatabase ourDatabase;
private DbHelper ourHelper;
private class DbHelper extends SQLiteOpenHelper {
public DbHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
String contactQuery = "CREATE TABLE " + CONTACT_TABLE + " ("
+ CONTACT_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ CONTACT_NAME + " TEXT NOT NULL, " + CONTACT_DATE
+ " TEXT NOT NULL, " + CONTACT_MOBILE_NUMBER
+ " TEXT NOT NULL UNIQUE);";
db.execSQL(contactQuery);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS " + CONTACT_TABLE);
onCreate(db);
}
}
public ContactMerger(Context context) {
this.context = context;
}
public ContactMerger open() throws SQLException {
ourHelper = new DbHelper(context);
ourDatabase = ourHelper.getWritableDatabase();
return this;
}
public void close() {
ourHelper.close();
}
// Insert Data to Contact Table
public long insertContacts(String name, String number, String date) throws SQLException {
ContentValues cv = new ContentValues();
cv.put(CONTACT_NAME, name);
cv.put(CONTACT_DATE, date);
cv.put(CONTACT_MOBILE_NUMBER, number);
Log.d("Insert Data", cv.toString());
return ourDatabase.insert(CONTACT_TABLE, null, cv);
}
//Get Contact details from Contact Table
public ArrayList<ContactHolder> getContactDetails() throws Exception{
ArrayList<ContactHolder> contactDetails = new ArrayList<ContactHolder>();
String[] columns = new String[] { CONTACT_ID, CONTACT_NAME, CONTACT_DATE, CONTACT_MOBILE_NUMBER };
Cursor c = ourDatabase.query(CONTACT_TABLE, columns, null, null, null,null, null);
int iContactName = c.getColumnIndex(CONTACT_NAME);
int iContactDate = c.getColumnIndex(CONTACT_DATE);
int iContactMobileNumber = c.getColumnIndex(CONTACT_MOBILE_NUMBER);
for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) {
ContactHolder data = new ContactHolder();
data.setName(c.getString(iContactName));
data.setDate(c.getString(iContactDate));
data.setNumber(c.getString(iContactMobileNumber));
contactDetails.add(data);
}
return contactDetails;
}
}
Here ContactHolder is just a getter/setter class to handle contact entities.
First I inserted all Contact information once in my MainActivity by the help of a background thread. It prevents to insert the contact info multiple times.
Something like:
private ArrayList<ContactHolder> contactHolder;
private void setCallLogs(Cursor managedCursor) {
contactHolder = new ArrayList<ContactHolder>();
int _number = managedCursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
int _name = managedCursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
int _id = managedCursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone._ID);
while (managedCursor.moveToNext()) {
ContactHolder holder = new ContactHolder();
holder.setNumber(managedCursor.getString(_number));
holder.setName(managedCursor.getString(_name));
holder.setDate(managedCursor.getString(_id));
contactHolder.add(holder);
}
Thread t = new Thread(new Runnable() {
@Override
public void run() {
for(int i=0; i<contactHolder.size(); i++){
try{
ContactMerger merger = new ContactMerger(HomeActivity.this);
merger.open();
merger.insertContacts(contactHolder.get(i).getName(),
contactHolder.get(i).getNumber(),
contactHolder.get(i).getdate());
merger.close();
} catch(Exception e){
e.printStackTrace();
}
}
}
});
t.start();
}
At last I gtt all contact information inside an Asynctask(doInbackground()) and put in adapter/listview in its onPostExecute() method in the class I want to show.
Here:
@Override
protected ArrayList<ContactHolder> doInBackground(String... parameters) {
ArrayList<ContactHolder> filterContacts = new ArrayList<ContactHolder>();
ContactMerger merger = new ContactMerger(Aaja_Contact.this);
merger.open();
try {
filterContacts = merger.getContactDetails();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
merger.close();
return filterContacts;
}
I believe this may happen if the contact number is stored in two different ways/formats: for example in your case the number for Akshay may be saved as 982-0123456 and 9820123456
Did you try displaying the number along with the Name by including the Number as well in the list view?
You need to retrieve the data from the Cursor to HashSet (which don't allows duplicate itmes) and then pass the HashSet object to your ListView's Adapter
This is a dump solution but it will help you:
ListView listView;
Set<String> listItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView);
listItems = new HashSet<String>();
String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
Cursor curLog = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null,order);
if(curLog != null) {
while(curLog.moveToNext()) {
String str = curLog.getString(curLog.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME_PRIMARY));
listItems.add(str);
}
}
String listString = listItems.toString();
listString = listString.substring(1,listString.length()-1);
String[] newList = listString.split(", ");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, newList);
listView.setAdapter(adapter);
}
Good luck..
Since you're querying Phone.CONTENT_URI, I'm assuming you're looking for contacts with phone number.. then you can use ContactsContract.Contacts.CONTENT_URI
String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
Cursor curLog = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null,
ContactsContract.Contacts.HAS_PHONE_NUMBER + "=?", new String[] { "1" }, order);
Its because the listview is showing both normal contacts as well as whatsapp( or like this) linked contacts. Best is to store all the contacts in a Database and then retrieve the contacts using "select distinct..." command of SQL.
String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, order);
String temp_name="";
while (phones.moveToNext())
{
String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
if (name.equals(temp_name))
continue;
temp_name=name;
//add name to your list or adapter here`enter code here`
}
phones.close();
来源：https://stackoverflow.com/questions/25012061/how-to-avoid-duplicate-contact-name-data-while-loading-contact-info-to-listvi