Android中对Group的各种操作示例代码

1.  增加Group

 // create a group
 ContentValues values = new ContentValues();
 values.put(ContactsContract.Groups.TITLE, “GROUPNAME”);
 Uri uri = getContentResolver().insert(ContactsContract.Groups.CONTENT_URI, values);

其中GROUPNAME是要创建的Group的名称。

2. 删除一个Group

 // delete a group
 // 做删除标志，但未真正删除。真正的删除会在同步时自动实现
 // getContentResolver().delete(ContactsContract.Groups.CONTENT_URI, ContactsContract.Groups._ID + " = " + raw_group_id, null);

 // 真正意义上的删除
 Uri uri = ContentUris.withAppendedId(ContactsContract.Groups.CONTENT_URI, raw_group_id);
 Uri.Builder b = uri.buildUpon();
 b.appendQueryParameter(ContactsContract.CALLER_IS_SYNCADAPTER, "true");
 uri = b.build();
 getContentResolver().delete(uri, null, null);

其中raw_group_id是Group的ID，对应的是ContactsContract.Groups中的_ID字段。

3. 查询所有的Group

 // query all groups
 Cursor groupCursor = getContentResolver().query(ContactsContract.Groups.CONTENT_URI,
     new String[]{ContactsContract.Groups.TITLE, ContactsContract.Groups._ID},
     null,
     null,
     null);

查询出所有Group的名称和ID。

4. 更改指定Group的名称

 // update a group
 ContentValues values = new ContentValues();
 values.put(ContactsContract.Groups.TITLE, "NEWGROUPTITLE");
 getContentResolver().update(ContactsContract.Groups.CONTENT_URI,
     values,
     ContactsContract.Groups._ID + " = " + raw_group_id,
     null);

其中NEWGROUPTITLE是新取的Group名称，raw_group_id是Group的ID。

5. 查询一个Group中的所有联系人

 // To query all contacts in a group

 // First, query the raw_contact_ids of all the contacts in the group
 Cursor groupContactCursor = getContentResolver().query(Data.CONTENT_URI,
     new String[]{Data.RAW_CONTACT_ID},
     Data.MIMETYPE + "='" + ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE + "' AND " + ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID + " = " + raw_group_id,
     null,
     null);

 // Second, query the corresponding name of the raw_contact_id
 while(groupContactCursor.moveToNext())
 {
     Cursor contactCursor = getContentResolver().query(Data.CONTENT_URI,
     new String[]{Data.RAW_CONTACT_ID, StructuredName.FAMILY_NAME, StructuredName.GIVEN_NAME},
     Data.MIMETYPE + "='" + StructuredName.CONTENT_ITEM_TYPE + "' AND " + Data.RAW_CONTACT_ID + "=" + groupContactCursor.getInt(0),
     null,
     null);
     contactCursor.moveToNext();
     Log.e("TestContractGroupOperationActivity", "Member name is: " + contactCursor.getString(1) + " " + contactCursor.getString(2));
     contactCursor.close();
 }
 groupContactCursor.close();

6. 从Group中删除某个联系人

 // Delete a contact from a group
 Uri uri = Data.CONTENT_URI;
 Uri.Builder b = uri.buildUpon();
 b.appendQueryParameter(ContactsContract.CALLER_IS_SYNCADAPTER, "true");
 uri = b.build();

 getContentResolver().delete(uri, Data.RAW_CONTACT_ID + "=" + raw_contact_id + " AND " + ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID + " =" + raw_group_id, null);

从ID为raw_group_id的Group中，删除ID为raw_contact_id的Contact。

7. 查询某个联系人处于那几个Group中

 // First, query all the group ids that a contact is in
 Cursor groupCursor = getContentResolver().query(Data.CONTENT_URI,
     new String[]{ContactsContract.CommonDataKinds.GroupMembership.GROUP_ROW_ID},
     ContactsContract.CommonDataKinds.GroupMembership.MIMETYPE + "='" + ContactsContract.CommonDataKinds.GroupMembership.CONTENT_ITEM_TYPE +"' AND " + Data.RAW_CONTACT_ID + " = " + raw_contact_id,
     null,
     null);

 // Second, get all the corresponding group names
 while(groupCursor.moveToNext())
 {
     Cursor groupNameCursor = getContentResolver().query(ContactsContract.Groups.CONTENT_URI,
         new String[]{ContactsContract.Groups.TITLE},
         ContactsContract.Groups._ID + "=" + groupCursor.getInt(0),
         null,
         null);
     groupNameCursor.moveToNext();
     Log.e("Test", groupNameCursor.getString(0));
     groupNameCursor.close();
 }
 groupCursor.close();

其中raw_contact_id是联系人的ID。

需要注意的是，groupCursor中所包含的group_raw_id有可能重复，为了消除这种重复，可以将groupCursor中的内容倒入到一个Set容器中，再根据Set容器中的元素(具有唯一性的group_raw_id)，查找其对应的Group的名称。

原帖 :http://blog.csdn.net/pathuang68/article/details/7179917