从Android中现有的内容提供商查询DISTINCT记录

Question

I want Distinct records from content provider.

My current code:

String[] projection= {"_id","address"};
Cursor address =  getContentResolver().query(android.provider.Telephony.Sms.Inbox.CONTENT_URI,projection, null, null,"address ASC");

Answer 1

You can add DISTINCT keyword in columns names in projection. eg

String[] projection= {"DISTINCT _id"};

Hope this will help you.

Answer 2

//use the DISTINCT before the name of the column

String[] projection= { "DISTINCT _id", "DISTINCT address"};

Cursor address =  getContentResolver().query(android.provider.Telephony.Sms.Inbox.CONTENT_URI,projection, null, null,"address ASC");