安卓 4.1+/ContactContract : Lookup group to given contactId (derived from lookup a number)

Question

以下函数将电话号码作为输入参数(例如 +436641234567 或 +436641234567)并在联系人数据库中执行两次查找:首先，识别属于该号码的用户(这已经有效)，然后使用该 ID用户的 获取所有组 此联系人被分配到(这不起作用)。测试返回正确的 ID(再次)，但是该组为“空”。

    public String getNameGroupByNumber(Context context, String number) {
    String name = "?";
    String contactId = "0";
    String group = "0";
    String test = "0";

    // Step 1: LookUp Name to given Number
    ContentResolver contentResolver = context.getContentResolver();

    Uri uri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
    String[] contactProjection = new String[] {BaseColumns._ID, ContactsContract.PhoneLookup.DISPLAY_NAME };
    Cursor contactLookup = contentResolver.query(uri, contactProjection, null, null, null);

    try {
        if (contactLookup != null && contactLookup.getCount() > 0) {
            contactLookup.moveToNext();

            name = contactLookup.getString(contactLookup.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
            contactId = contactLookup.getString(contactLookup.getColumnIndex(BaseColumns._ID));     
        }
    } finally {         
        if (contactLookup != null) {
            contactLookup.close();
        }
    }

    Log.d(TAG, "Name: " +name + " ContactId: " + contactId);    // works as expected

    // Step 2: Lookup group memberships of the contact found in step one
    Uri groupURI = ContactsContract.Data.CONTENT_URI;
    String[] groupProjection = new String[]{ ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID , ContactsContract.CommonDataKinds.GroupMembership.CONTACT_ID};
    Cursor groupLookup = contentResolver.query(groupURI, groupProjection, ContactsContract.CommonDataKinds.GroupMembership.CONTACT_ID+"="+contactId, null, null);

    try {

        if (groupLookup != null && groupLookup.getCount() > 0) {
            groupLookup.moveToNext();

             test = groupLookup.getString(groupLookup.getColumnIndex(ContactsContract.CommonDataKinds.GroupMembership.CONTACT_ID));
             group = groupLookup.getString(groupLookup.getColumnIndex(ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID));

             Log.d(TAG, "Group found with Id: " + test + " and GroupId: " + group);   // test is again the contactID from above but group is null

        }
    } finally {         
        if (groupLookup != null) {
            groupLookup.close();
        }
    }

    return name;
 }

Answer 1

Cursor groupLookup = getContentResolver().query(
        ContactsContract.Data.CONTENT_URI,
        new String[]{
                ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID , 
                ContactsContract.CommonDataKinds.GroupMembership.CONTACT_ID
        },
        ContactsContract.Data.MIMETYPE + "=? AND " + ContactContract.Data.CONTACT_ID + "=?",
        new String[]{
                ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE,
                contact_id
        }, null
);

请改用此 groupLookup 游标。

Cursor groupCursor = getContentResolver().query(
        ContactsContract.Groups.CONTENT_URI,
        new String[]{
                ContactsContract.Groups._ID,
                ContactsContract.Groups.TITLE
        }, ContactsContract.Groups._ID + "=" + _id, null, null
);

groupCursor 有助于从 _id 获取组标题。