android - Cursor always returns empty -


in code given below ,when run app data getting written table when fetch data gives me empty cursor.any appreciated

public class todo extends activity {           private checkbox chkios;         edittext txtphoneno;         string isc="n";         string phoneno="000";         string name="000";     context mcontect =this;      @override         protected void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.activity_todo);              //declaration         chkios = (checkbox) findviewbyid(r.id.checkbox);          txtphoneno = (edittext) findviewbyid(r.id.edittextphoneno);             //get_user_name             sharedpreferences pref = getsharedpreferences("lin", 0);             name = pref.getstring("key", null);             //database_3         databaseoperations3  = new databaseoperations3(mcontect);         cursor cr = do.getinformation(do);         log.d("=====>", "todo");         if (cr.movetofirst()) {             log.d("=====>", "todo");              {                 if (name.equals(cr.getstring(0))) {                     log.d(name, cr.getstring(0));                      phoneno = (cr.getstring(1));                     log.d(name, cr.getstring(0));                     log.d(phoneno, cr.getstring(1));                     log.d(isc, cr.getstring(2));                     isc = (cr.getstring(2));                     txtphoneno.settext(phoneno);                 }             } while (cr.movetonext());             check();         }} public void check() {    string s="c";     if(isc.equals(s)){         log.d("=====>", "check");          chkios.setchecked(true);      } }     public void cbonclick(view v) {          if (chkios.ischecked()) {          isc = "c";         } }     public void xxx(view v) {         phoneno = txtphoneno.gettext().tostring();         databaseoperations3  = new databaseoperations3(mcontect);          do.putinformation(do,name,phoneno,isc);         log.d("=====>", "database_3_7");         intent intenti = new intent(this, proxalertactivity.class);         startactivity(intenti);     }               protected void sendsmsmessage() {             log.d("send sms", "************");              string message = "reached";                 log.d("=====>", "message");                if (isc.equals("c")&&phoneno!="000") {                 log.d("=====>", "eqto");                  try {                     log.d("=====>", "try");                      smsmanager smsmanager = smsmanager.getdefault();                     smsmanager.sendtextmessage(phoneno, null, message, null, null);                     toast.maketext(getapplicationcontext(), "sms sent.",                             toast.length_long).show();                  } catch (exception e) {                     log.d("=====>", "excep");                      toast.maketext(getapplicationcontext(),                             "sms faild, please try again.",                             toast.length_long).show();                     e.printstacktrace();                 }             }         }     }

the database of app given below

public class databaseoperations3 extends sqliteopenhelper {      static final int database_version = 1;      static final string user_name = "user_name";      static final string user_phone = "user_ph";      static final string user_select = "user_select";      static final string databse_name = "phone_info.db";      static final string table_name = "ph_info";     public databaseoperations3(context context) {         super(context, databse_name, null, database_version);         log.d("database operations","database created");     }  @override     public void oncreate(sqlitedatabase sdb) {         log.d("database operations3","table created");         sdb.execsql("create table " + table_name +                 "( "  + user_name + " text, " +                 user_phone + " text, " + user_select + " text)");      }         public void onupgrade(sqlitedatabase sq,int arg1,int arg2) {         log.d("databasehelper", "onupgrade");         sq.execsql("drop table if exists " + table_name);         oncreate(sq);      }     public void putinformation(databaseoperations3 dop,string name,string ph,string isc)     {         sqlitedatabase sq = dop.getwritabledatabase();         sq.rawquery("delete " + table_name + " " + user_name + " = ?", new string[]{name});         contentvalues cv = new contentvalues();         cv.put(user_name,name);         cv.put(user_phone,ph);         cv.put(user_select,isc);         log.d(name,ph);      }     public cursor getinformation(databaseoperations3 dop)     {         log.d("databasehelper", "getinfo");          sqlitedatabase sq = dop.getreadabledatabase();         string[] columns = {user_name, user_phone,user_select};         cursor cr = sq.query(table_name,columns,null, null, null, null, null);         return cr;  } }


Comments

Post a Comment

Popular posts from this blog

java - Spring Data JPA: Why findOne(id) executing delete query internally? -

i have 1 application using @manytomany annotation link 2 different entities 1 parent entity. not sure if have implemented properly. when execute .findone() on parent entity's repository find it, @ first fetch data along executing delete queries internally delete record mapping table (a table jpa creates after adding @manytomany annotation.). following generated sql queries , code snippet: java class @entity @table(name = "inventory") public class inventory { @id long id; // many other properties @manytomany(fetch=fetchtype.lazy) private list<stream> streams; @manytomany(fetch=fetchtype.lazy) private list<subject> subjects; } there no other annotation i've put in stream , subject entity class link inventory class. when run app, create following tables: inventory stream subject inventory_stream inventory_subject (inventory_stream , inventory_subject, 2 tables created automatically, don't k...
Read more

python - Mongodb How to add addtional information when aggregating? -

i beginner , wrote line pipeline works, wanna add other information output, screen name , or number of tweets.i tried add under $group gave me syntax error everytime here pipeline: def make_pipeline(): # complete aggregation pipeline pipeline = [ { '$match': { "user.statuses_count": {"$gt":99 }, "user.time_zone": "brasilia" } }, { "$group": { "_id": "$user.id", "followers": { "$max": "$user.followers_count" } } }, { "$sort": { "followers": -1 } }, { "$limit" : 1 } ]; i using on example : { "_id" : objectid("5304e2e3cc9e684aa98bef97"), "text" : "first week of school on :p", "in_reply_to_status_id" : null, "retweet_count" : null, ...
Read more

java - Incorrect order of records in M-M relationship in hibernate -

Image
i have 4 records in bridge table in mysql database. using @manytomany in hibernate, accurate order of employees incorrect incorrect of projects. following required material figure out doing mistake. this source. @entity @table(name="project") public class projectbean { @id @generatedvalue @column(name="project_id") private int projectid; @column(name="title") private string projecttitle; @manytomany(mappedby="projects") private collection<employeebean> employees; public projectbean() { employees = new arraylist<employeebean>(); } //getters & setters } @entity @table(name="employee") public class employeebean { @id @generatedvalue @column(name="employee_id") private int employee_id; @column(name="first_name") private string ...
Read more