Question

In my project getting contacts is taking a long time to load.

• What are ways to reduce the time of getting contacts
• Assume there are 1000 contacts in my phone.
• Right now it is taking more than 2 minutes to load all the contacts

How can I reduce the time to load contacts ?
Any Thoughts?

I referred to the the following link when programming the initial method.

http://www.coderzheaven.com/2011/06/13/get-all-details-from-contacts-in-android/

Answer 1

Total time will depend upon what fields you are trying to access from the Contacts table.
Accessing less field means less looping , less processing and hence faster results.

Also to speed up your contacts fetch operation you can use the ContentProvideClient instead of calling query on ContentResolver every time. This will make you query the specific table rather than querying first for the required ContentProvider and then to table.

Create an instance of ContentProviderClient

ContentResolver cResolver=context.getContextResolver();
ContentProviderClient mCProviderClient = cResolver.acquireContentProviderClient(ContactsContract.Contacts.CONTENT_URI);

Then reuse this mCProviderClient to get Contacts(data from any ContentProvider) data on your call.
For example in following method, I am accessing only one field.

private ArrayList<String> fetchContactsCProviderClient()
    {
        ArrayList<String> mContactList = null;
        try
        {
            Cursor mCursor = mCProviderClient.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
            if (mCursor != null && mCursor.getCount() > 0)
            {
                mContactList = new ArrayList<String>();
                mCursor.moveToFirst();
                while (!mCursor.isLast())
                {
                    String displayName = mCursor.getString(mCursor.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
                    mContactList.add(displayName);
                    mCursor.moveToNext();
                }
                if (mCursor.isLast())
                {
                    String displayName = mCursor.getString(mCursor.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
                    mContactList.add(displayName);
                }
            }

            mCursor.close();
        }
        catch (RemoteException e)
        {
            e.printStackTrace();
            mContactList = null;
        }
        catch (Exception e)
        {
            e.printStackTrace();
            mContactList = null;
        }

        return mContactList;
    }