如何在 Android 中获取联系人的 groupId / GroupName？

发布于 2024-10-07 02:59:31 字数 140 浏览 1 评论 0原文

我有 Android 设备中的联系人列表。我想获取所有联系人的关联 groupId 和 GroupName。我一直在尝试使用 ContactsContract.Groups._ID 来获取 ID，但无法获取它。有人可以提供其他方式来获取联系人的 groupID 吗？

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薆情海 2024-10-14 02:59:31

我就是这样做的。您可能可以通过不执行两个查询来解决问题并找到更快的解决方案。

这个想法是使用GroupMembership.GROUP_ROW_ID从数据表中获取组的行ID。当您拥有行 ID 时，您可以使用它来查询组表以获取组的名称（标题）。

通常，Groups.TITLE 并不是一个好名字，您可能必须对其进行格式化或四处搜索以找到更好的名称。

这是获取联系人 ID 的代码：

public long getGroupIdFor(Long contactId){
    Uri uri = Data.CONTENT_URI;
    String where = String.format(
            "%s = ? AND %s = ?",
            Data.MIMETYPE,
            GroupMembership.CONTACT_ID);

    String[] whereParams = new String[] {
               GroupMembership.CONTENT_ITEM_TYPE,
               Long.toString(contactId),
    };

    String[] selectColumns = new String[]{
            GroupMembership.GROUP_ROW_ID,
    };


    Cursor groupIdCursor = mContext.getContentResolver().query(
            uri, 
            selectColumns, 
            where, 
            whereParams, 
            null);
    try{
        if (groupIdCursor.moveToFirst()) {
            return groupIdCursor.getLong(0);
        }
        return Long.MIN_VALUE; // Has no group ...
    }finally{
        groupIdCursor.close();
    }
}

这是获取群组标题的代码：

public String getGroupNameFor(long groupId){
    Uri uri = Groups.CONTENT_URI;
    String where = String.format("%s = ?", Groups._ID);
    String[] whereParams = new String[]{Long.toString(groupId)};
    String[] selectColumns = {Groups.TITLE};
    Cursor c = mContext.getContentResolver().query(
            uri, 
            selectColumns,
            where, 
            whereParams, 
            null);

    try{
        if (c.moveToFirst()){
            return c.getString(0);  
        }
        return null;
    }finally{
        c.close();
    }
}

This is how I do it. You can probably mess around and find a faster solution by not doing two queries.

The idea is to get the row id of the group from the Data table using GroupMembership.GROUP_ROW_ID. When you have the row id you use that to query the Groups table to get the name (Title) of the group.

Often the Groups.TITLE isn't that good a name and you probably will have to format it or search around to find anything better.

Here is the code to get contact id:

public long getGroupIdFor(Long contactId){
    Uri uri = Data.CONTENT_URI;
    String where = String.format(
            "%s = ? AND %s = ?",
            Data.MIMETYPE,
            GroupMembership.CONTACT_ID);

    String[] whereParams = new String[] {
               GroupMembership.CONTENT_ITEM_TYPE,
               Long.toString(contactId),
    };

    String[] selectColumns = new String[]{
            GroupMembership.GROUP_ROW_ID,
    };


    Cursor groupIdCursor = mContext.getContentResolver().query(
            uri, 
            selectColumns, 
            where, 
            whereParams, 
            null);
    try{
        if (groupIdCursor.moveToFirst()) {
            return groupIdCursor.getLong(0);
        }
        return Long.MIN_VALUE; // Has no group ...
    }finally{
        groupIdCursor.close();
    }
}

And here is the code to get the Title of the group:

public String getGroupNameFor(long groupId){
    Uri uri = Groups.CONTENT_URI;
    String where = String.format("%s = ?", Groups._ID);
    String[] whereParams = new String[]{Long.toString(groupId)};
    String[] selectColumns = {Groups.TITLE};
    Cursor c = mContext.getContentResolver().query(
            uri, 
            selectColumns,
            where, 
            whereParams, 
            null);

    try{
        if (c.moveToFirst()){
            return c.getString(0);  
        }
        return null;
    }finally{
        c.close();
    }
}

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