Fetch data from contacts take too much time in android

Question

I am working with android device contacts. if android device contacts more than five thousand,Fetch data from contacts take too much time with blank screen. I have used bellow code to fetch data

private void fetchContacts1() {
    String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
    Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, order);
    while (cursor.moveToNext()) {
        String name = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
        String phonenumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

    }
 cursor.close();
}

I show all the contacts to recycle view.There are some devices which has more than ten thousand contacts. can you suggest me how to handle it.

I'd suggest you store the cursor as a field in your class, and return only perhaps 100 at a time. And then, you'd keep asking for more as long as you haven't hit the end. Along with a progress bar or cancel dialog, this gives the user some feedback and allows them to cancel. — user2740650, Jan 20 '20 at 02:28

score 2 · Accepted Answer · answered Jan 20 '20 at 02:38

Use the Async task to load your contacts in the background. after loading for first-time store your list of contacts to your local database

below following links may help you

https://developer.android.com/guide/components/loaders

https://stackoverflow.com/a/40017905/10239870

  class ContactLoader extends AsyncTask<Void, Void, List<Contact>> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        //visible your progress bar here
    }

    @Override
    protected List<Contact> doInBackground(Void... voids) {
        List<Contact> contacts = new ArrayList<>();
        String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
        Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, order);
        while (cursor.moveToNext()) {
            String name = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
            String phonenumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            contacts.add(new Contact(name, phonenumber));
        }
        cursor.close();
        return contacts;
    }

    @Override
    protected void onPostExecute(List<Contact> contactList) {
        super.onPostExecute(contactList);
        //set list to your adapter
    }
}


  class Contact {
    String name;
    String number;

    public Contact(String name, String number) {
        this.name = name;
        this.number = number;
    }

    public String getName() {
        return name;
    }

    public String getNumber() {
        return number;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setNumber(String number) {
        this.number = number;
    }
}

Fetch data from contacts take too much time in android

1 Answers1