Android: How to get contact DisplayName by contact _ID? -


folks!

look broke mind problem - how display_name contactcontract via _id got earlier???

here code:

    public static long getid(context context, string number) {     long id = 0;     string displayname;     // define columns want query return     final string[] projection = new string[] {             contactscontract.phonelookup.display_name,             contactscontract.phonelookup._id};     // encode phone number , build filter uri     final uri contacturi = uri.withappendedpath(contactscontract.phonelookup.content_filter_uri, uri.encode(number));     // query time     final cursor cursor = context.getcontentresolver().query(contacturi, projection, null, null, null);     if(cursor != null) {         if (cursor.movetofirst()) {             displayname = cursor.getstring(cursor.getcolumnindex(contactscontract.phonelookup.display_name));              // here _id!             id = cursor.getlong(cursor.getcolumnindex(contactscontract.phonelookup._id));             log.d("_tag_", displayname);              {                 //                 // v. n-1                 //                 cursor cursor2 = context.getcontentresolver().query(                         contacturi,                         projection,                         contactscontract.commondatakinds.phone.contact_id + " = ?",                         new string[]{string.valueof(id)}, null);                  if(cursor2 != null) {                     // cursor valid string below got error "android.database.cursorindexoutofboundsexception: index -1 requested, size of 1 : )"                     displayname = cursor2.getstring(cursor.getcolumnindex(contactscontract.phonelookup.display_name));                     log.d("_tag_", displayname);                 }             }              {                 //                 // v. n                 //                 uri myphoneuri = uri.withappendedpath(contactscontract.phonelookup.content_filter_uri,                         uri.encode(string.valueof(id)));                 cursor phonecursor = context.getcontentresolver().query(                         myphoneuri, null, null, null, null);                  (phonecursor.movetofirst(); !phonecursor.isafterlast(); phonecursor.movetonext()) {                     // no steps inside!                     string str = phonecursor.getstring(phonecursor                             .getcolumnindexorthrow(contactscontract.commondatakinds.nickname.name));                      log.d(app.log_tag, "contactutils.getid:  " + str);                  }                  if(phonecursor != null) {                     phonecursor.close();                 }             }           } else {             log.d("_tag_", "contact not found @ " + number);         }         cursor.close();     }     return id; }

"v.n-1" , "v.n" 2 ones million attempts before.

see - got _id, why doesn't work valid query???

here decision found.

    public static string getdisplayname(context context, long id) {     string displayname = null;     // define columns want query return     final string[] projection = new string[] {             contactscontract.contacts.display_name,     };     final cursor cursor = context.getcontentresolver().query(contactscontract.commondatakinds.phone.content_uri, projection,             contactscontract.commondatakinds.phone.contact_id + " = ?", new string[] { id + "" }, null);     if(cursor != null) {         if (cursor.movetofirst()) {             displayname = cursor.getstring(cursor.getcolumnindex(contactscontract.contacts.display_name));         }         cursor.close();     }     return displayname; }

it works...


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