java - How to retrieve sql azure data into a list view? - 


string[] items = new string[10]; @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.main);      // create variable connection string.       string connectionurl = "jdbc:sqlserver://servername.database.windows.net;" +           "databasename=school;user=username@servername;password=userpassword";         // declare jdbc objects.       connection con = null;       statement stmt = null;       resultset rs = null;      setlistadapter(new arrayadapter<string>(this,                                             android.r.layout.list_item,                                             new arraylist()));      new addstringtask().execute();      try {          // establish connection.          class.forname("com.microsoft.sqlserver.jdbc.sqlserverdriver");          con = drivermanager.getconnection(connectionurl);           // create , execute sql statement returns data.          string sql = "select top 10 * dbo.tbl";          stmt = con.createstatement();          rs = stmt.executequery(sql);           // iterate through data in result set , display it.          while (rs.next()) {                 string items = rs.getarray(2) + " " + rs.getarray(3);          }       }        // handle errors may have occurred.       catch (exception e) {          e.printstacktrace();       }       {          if (rs != null) try { rs.close(); } catch(exception e) {}          if (stmt != null) try { stmt.close(); } catch(exception e) {}          if (con != null) try { con.close(); } catch(exception e) {}       } }  class addstringtask extends asynctask<void, string, void> {     @override     protected void doinbackground(void... unused) {          return(null);     }      @override     protected void onprogressupdate(string... item) {         ((arrayadapter)getlistadapter()).add(item[0]);     }      @override     protected void onpostexecute(void unused) {         toast             .maketext(asyncdemo.this, "done!", toast.length_short)             .show();     } }

in while loop inside oncreate 10 rows , 2 columns table in remote database sql azure store in string array. string array gets outputted user list view. jdbc driver download link min.bz/wc4am (non-windows users compressed file. last 1 listed)also updated link.

android-java-sqlazure combination, congrats!

on other hand, why access database (sql azure) directly mobile app? has few drawbacks:

  • you need include sql server adapter , jdbc libraries on mobile application, gonna take @ least 1 mb in size.
  • your app users able see database password few tricks. big security vulnerability system! users can drop tables.
  • mobile apps (especially android) should not preferred consume database directly (since android activity cycle policy, apps can pause time , database connection might dropped meanwhile, , various unexpected exceptions due reason.).

therefore should create web service or rest api java or asp.net can execute queries through proxy , gives results in json, or xml or format java can parse , adapt arrayadapter.


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