Contacts群组添加成员，多选列表过滤已添加数据

Group添加联系人时，Contacts默认设计不会过滤已分组的联系人。之前看到小米，oppo都做过过滤，一直懒得改。

最近客户要求group添加成员时，不显示已分组的联系人，故记录一下实现过程。

public void pickMembers() {
        Intent intent = new Intent(MultiPickContactActivity.ACTION_MULTI_PICK);
        intent.putExtra(MultiPickContactActivity.IS_CONTACT,true);
        //add by antoon, for group pick contacts
        intent.putExtra(MultiPickContactActivity.IS_GROUP_MEMBER_PICK,true);//增加标记，表示Contacts多选界面进行的是group pick member
        //end add
        intent.setClass(mActivity, MultiPickContactActivity.class);
        ContactListFilter filter = new ContactListFilter(ContactListFilter.FILTER_TYPE_ACCOUNT,
                PhoneAccountType.ACCOUNT_TYPE, SimContactsConstants.PHONE_NAME, null, null);
        intent.putExtra(AccountFilterActivity.KEY_EXTRA_CONTACT_LIST_FILTER, filter);
        mActivity.startActivityForResult(intent, CODE_PICK_MEMBER);
    }

MultiPickContactActivity处理

//add by antoon, for group pick contacts
    public static final String IS_GROUP_MEMBER_PICK ="is_group_pick_contact"; 

public void onCreate(Bundle savedInstanceState) {
......
    else if (ACTION_MULTI_PICK.equals(action)) {
            if (!isContact) {
                mMode = MODE_DEFAULT_PHONE;
            } else {
                mMode = MODE_DEFAULT_CONTACT;
                //add by antoon, for group pick contacts
                if(getIntent().getBooleanExtra(IS_GROUP_MEMBER_PICK, false))
                    setTitle(R.string.ungrouped_contacts);
                //end add
            }
        }
......
}

public void startQuery() {
        Uri uri = getUriToQuery();
        ContactListFilter filter = (ContactListFilter) getIntent().getExtra(
                          AccountFilterActivity.KEY_EXTRA_CONTACT_LIST_FILTER);
        if (filter != null) {
            if (filter.filterType == ContactListFilter.FILTER_TYPE_ACCOUNT) {
                // We should exclude the invisiable contacts.
                uri = uri.buildUpon().appendQueryParameter(RawContacts.ACCOUNT_NAME,
                         filter.accountName).appendQueryParameter(RawContacts.ACCOUNT_TYPE,
                         filter.accountType)
                        .appendQueryParameter(ContactsContract.DIRECTORY_PARAM_KEY,
                         ContactsContract.Directory.DEFAULT+"").build();

                //add by antoon, for group pick contacts
                if(getIntent().getBooleanExtra(IS_GROUP_MEMBER_PICK, false)){
                    uri = uri.buildUpon().appendQueryParameter(IS_GROUP_MEMBER_PICK, "true").build();//传递查询条件参数给ContactsProvider2使用
                }
                //end add

            } else if (filter.filterType == ContactListFilter.FILTER_TYPE_ALL_ACCOUNTS) {
                // Do not query sim contacts in airplane mode.
                if (!isShowSIM()) {
                    uri = uri.buildUpon().appendQueryParameter(RawContacts.ACCOUNT_TYPE,
                              SimAccountType.ACCOUNT_TYPE)
                             .appendQueryParameter(DefaultContactListAdapter.WITHOUT_SIM_FLAG,
                              "true").build();
                }
            }
        }
        String[] projection = getProjectionForQuery();
        String selection = getSelectionForQuery();
        String[] selectionArgs = getSelectionArgsForQuery();
        mQueryHandler.startQuery(QUERY_TOKEN, null, uri, projection, selection,
                selectionArgs, getSortOrder(projection));
    }

最关键是在ContactsProvider2中增加数据库查询判断条件。

protected Cursor queryLocal(final Uri uri, final String[] projection, String selection,
            String[] selectionArgs, String sortOrder, final long directoryId,
            final CancellationSignal cancellationSignal) {

        final SQLiteDatabase db = mDbHelper.get().getReadableDatabase();

        SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
        ......

        final int match = sUriMatcher.match(uri);
        switch (match) {
            case SYNCSTATE:
            case PROFILE_SYNCSTATE:
                return mDbHelper.get().getSyncState().query(db, projection, selection,
                        selectionArgs, sortOrder);

            case CONTACTS: {
                setTablesAndProjectionMapForContacts(qb, uri, projection);
                appendLocalDirectoryAndAccountSelectionIfNeeded(qb, directoryId, uri);//设置查询条件，where字句
                break;
            }

private void appendLocalDirectoryAndAccountSelectionIfNeeded(SQLiteQueryBuilder qb,
            long directoryId, Uri uri) {
        final StringBuilder sb = new StringBuilder();
        if (directoryId == Directory.DEFAULT) {
            sb.append("(" + Contacts._ID + " IN " + Tables.DEFAULT_DIRECTORY + ")");
        } else if (directoryId == Directory.LOCAL_INVISIBLE){
            sb.append("(" + Contacts._ID + " NOT IN " + Tables.DEFAULT_DIRECTORY + ")");
        } else {
            sb.append("(1)");
        }

        ......

        //add by nxd 2015-5-18, for local group pick contacts
        String isGroupMemPick = getQueryParameter(uri, IS_GROUP_MEMBER_PICK );
        if("true".equals(isGroupMemPick)){
            sb.append(" AND (" + Contacts.NAME_RAW_CONTACT_ID + " NOT IN (" +
                            "SELECT " + Data.RAW_CONTACT_ID + " FROM "
                            + Tables.DATA +
                            " WHERE " + Data.MIMETYPE + "_id =("
　　　　　　　　　　　　　　　　　　　　　　+ "SELECT _id FROM mimetypes "
　　　　　　　　　　　　　　　　　　　　　　+ "WHERE mimetype='vnd.android.cursor.item/local-groups')))");// mimetype_id=local-groups对应id,说明已分组

        }
        //end add
        qb.appendWhere(sb.toString());
    }