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POFastest way to query contacts with "mobile phone numbers" on Android
 

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  1. POFastest way to query contacts with "mobile phone numbers" on Android
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    <p>I need to get a distinct list of all contacts from a device and their phone numbers. But wait... We know that some contacts may have multiple numbers assigned, it all depends how each of the users stores his contacts. Here is what i do:</p> <pre><code> ContentResolver cr = context.getContentResolver(); Uri uri = ContactsContract.Contacts.CONTENT_URI; String[] projection = new String[] { ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME }; String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '1'"; String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC"; ArrayList&lt;user&gt; contacts = new ArrayList&lt;user&gt;(); Cursor users = a.managedQuery(uri, projection, selection, null, sortOrder); while (users.moveToNext()) { user u = new user(); u.PhoneId = users.getInt(users.getColumnIndex(ContactsContract.Contacts._ID)); u.Name = users.getString(users.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); String homePhone = "", cellPhone = "", workPhone = "", otherPhone = ""; Cursor contactPhones = cr.query(Phone.CONTENT_URI, null, Phone.CONTACT_ID + " = " + u.PhoneId, null, null); while (contactPhones.moveToNext()) { String number = contactPhones.getString(contactPhones.getColumnIndex(Phone.NUMBER)); int type = contactPhones.getInt(contactPhones.getColumnIndex(Phone.TYPE)); switch (type) { case Phone.TYPE_HOME: homePhone = number; break; case Phone.TYPE_MOBILE: cellPhone = number; break; case Phone.TYPE_WORK: workPhone = number; break; case Phone.TYPE_OTHER: otherPhone = number; break; } } u.Phone = ((cellPhone!="") ? cellPhone : ((homePhone!="") ? homePhone : ((workPhone!="") ? workPhone : otherPhone))); } return contacts; </code></pre> <p>The process works but for my 80 contacts it takes between 1000-2000 miliseconds, and i need to work much faster :)</p>
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    1. USandroid-developer
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    1. COI'd just like to ask why you would do something like `u.Phone = ((cellPhone!="")?cellPhone:(((homePhone!="")?homePhone:(workPhone!="")?workPhone:otherPhone)));`. This makes your code way harder to read than formatting it "properly". Also, have you ran a traceview on this code to figure out what is actually running slowly?
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      1. USAustyn Mahoney
    2. CO@Austyn Mahoney: the inline ifs are to prioritize the numbers, instead of doing 10 lines of if/elses :) what slows it down is the ".query" of the numbers for each contact. If there was only a way to query all of this info at once...
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    3. COc'mon, no takers? :)
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      1. USandroid-developer
 

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