Android Contact Picker Checklist

I'm trying to create a "select-multiple" contact list where I can allow a user to check more than one contact. What I'm looking for is effectively the same thing as the native activity that 开发者_Go百科appears when composing a message to multiple contacts. Thanks!

At first you need to get a list of contacts and then display it on ListView element. For example I'm using following code to display all users contacts on a ListView:

                 // Run query on all contacts id
                Uri uri = ContactsContract.Contacts.CONTENT_URI;
                String[] projection = new String[] { ContactsContract.Contacts._ID,
                                                ContactsContract.Contacts.DISPLAY_NAME};
                String selection = null;//ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '" + ("1") + "'";
                String[] selectionArgs = null;
                String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
                        + " COLLATE LOCALIZED ASC";

                ContentResolver contectResolver = getContentResolver();

                Cursor cursor = contectResolver.query(uri, projection, selection, selectionArgs,
                        sortOrder);

                //Create buffer
                final ArrayList<ContactData> bufferContacts = new ArrayList<ContactData>();

                //Load contacts one by one
                if(cursor.moveToFirst()) {
                    while(!cursor.isAfterLast()) {



                        String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));


                        String[] emailProj = new String[]{Email.DATA};
                        Cursor cursorEmail = contectResolver.query(Email.CONTENT_URI, emailProj,Email.CONTACT_ID + " = ? ", new String[] { id }, null);

                        String[] phoneProj = new String[]{ContactsContract.CommonDataKinds.Phone.NUMBER, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME};
                        Cursor cursorPhone = contectResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, phoneProj,
                                ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { id }, null);

                        String firstName = "";
                        String lastName = "";
                        String email = "";
                        String displayname = "";
                        String phoneNmb = "";

                        if(cursorPhone.moveToFirst()) {
                            ///displayname = cursorPhone.getString(cursorPhone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                            phoneNmb = cursorPhone.getString(cursorPhone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                        }
                        cursorPhone.close();

                        if(cursorEmail.moveToFirst()) {
                            email = cursorEmail.getString(cursorEmail.getColumnIndex(Email.DATA));
                        }
                        cursorEmail.close();

                        displayname = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

                        //Divide display name to first and last
                        String[] names = displayname.split("\\s+");

                        firstName = displayname;

                        if(names.length >= 1) {
                            firstName = names[0];
                        }

                        if(names.length >= 2) {
                            firstName = names[1];
                        }

                        final ContactData contactData = new ContactData(id, firstName, lastName, phoneNmb, email, allChecked);

                        bufferContacts.add(contactData);

                        //Set list view initialy
                        runOnUiThread(new Runnable() {
                            public void run() {

                                if(contactsAdapter == null) {
                                    ArrayList<ContactData> contacts = new ArrayList<ContactData>();
                                    contactsAdapter = new ContactAdapter(ContactPickerActivity.this, contacts);

                                    lvContacts.setAdapter(contactsAdapter);
                                }

                                if(bufferContacts.size() >= BUFFER_INTERVAL) {
                                    addBuffer(bufferContacts);
                                }
                            }

                        });

                        cursor.moveToNext();
                    }
                }

                cursor.close();

                runOnUiThread(new Runnable() {
                    public void run() {

                        addBuffer(bufferContacts);

                    }

                });

If you don't want to bother yourself with making everything out of scratch then feel free to use my ready library for selecting multiple contacts:

https://github.com/kgadzinowski/Android-Multiple-Contacts-Picker-Library