database - Android login Error -

-

i making login page. in following code, userentered , pswdentered edittext collecting user input. pass userentered parameter in method getsingleentry in database. want method check username in database , return corresponding password back. how method getsingleentry look?

        boolean diditwork = true;         try {         string userentered= user.gettext().tostring();         string pswdentered = pswd.gettext().tostring();     string storedpassword=logindb.getsingleentry(userentered);          log.d("blahhhhhhhhh", storedpassword);           if(pswdentered.equals(storedpassword))          {                  dialog id=new dialog(login.this);                 id.settitle("login");                 textview tyv=new textview(login.this);                 tyv.settext("registration successful!");                 id.setcontentview(tyv);           }          else          {                  dialog id=new dialog(login.this);                 id.settitle("login");                 textview tyv=new textview(login.this);                 tyv.settext("incorrect username or password!");                 id.setcontentview(tyv);                 id.show();           }          }   /*  catch(sqlexception ee)         {             diditwork=false;             string error=ee.tostring();             dialog id=new dialog(login.this);             id.settitle("sqlsqlsqlsql");             textview tyv=new textview(login.this);             tyv.settext(error);             id.setcontentview(tyv);             id.show();         }*/         catch(exception e)         {             diditwork=false;             string error=e.tostring();             dialog id=new dialog(login.this);             id.settitle("login");             textview tyv=new textview(login.this);             tyv.settext("retype password"+error );             id.setcontentview(tyv);             id.show();         }

these database definitions.

                   public static final string key_rowid="_id";                    public static final string key_name= "name";                    public static final string key_username="username";                    public static final string key_password="password";                public static final string key_mobile= "mobile";                public static final string key_email= "email";                     private static final string database_name="logindb";                    private static final string database_table="doctortable";                    private static final int database_version=2; 

public static string getsingleentry(string username) {     log.d("db", username);     cursor c;     string[] columns= new string[]{key_rowid,key_name,key_username,key_password,key_mobile,key_email}; //  string[] columns= new string[]{key_password};       c = db.rawquery("select password " + database_table + " username=?", new string[]{username}); //   c=db.query("logindb", columns,key_username + "=" + username ,null, null, null, null);   // c = db.rawquery("select password " + database_name + " username ='"+username+"'", null);       // c= db.rawquery("select "+ key_password + "from" + database_name + "where" + key_username + "= ?", new string[] {username});   // c= db.rawquery("select password 'logindb' username ="+username, null);        if(c!=null)      {      c.movetofirst();      string password= c.getstring(3);      log.d("ruuuu",password);      c.close();      return password;          }      return null;   }

Comments

Post a Comment

Popular posts from this blog

windows - Single EXE to Install Python Standalone Executable for Easy Distribution -

-
i used pyinstaller create standalone exe file pyqt project. did not use single file option because exe created single file option takes long open. therefore, pyinstaller created dist folder contains bunch of files including program.exe file. create setup.exe file place contents of dist folder in program directory , create shortcut in start menu , on desktop. want super simple user. maybe setup.exe files when download program cnet. found inno-setup, looks promising. however, not know if there special considerations because program standalone program create python/pyqt program. thanks! have experience task? there program using task not know about? inno-setup or nsis easiest use. tell them files include , put them , create nice installer you. wrote short tutorial on experiences using innosetup might find helpful: http://www.blog.pythonlibrary.org/2008/08/27/packaging-wxpymail-for-distribution/ note tutorial based around wxpython app wrote, concepts same.
Read more

c# - Access objects in UserControl from MainWindow in WPF -

-
i have simple xaml, how can change text property of textblock in usercontrol1 mainwindow ? <window x:class="refactorxaml.mainwindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:refactorxaml="clr-namespace:refactorxaml" title="mainwindow" height="350" width="525"> <grid> <grid.rowdefinitions> <rowdefinition height="100"></rowdefinition> <rowdefinition height="100"></rowdefinition> </grid.rowdefinitions> <grid> <refactorxaml:usercontrol1></refactorxaml:usercontrol1> </grid> <grid grid.row="1"> <button>change text</button> </grid> </grid> </window> <usercon...
Read more

javascript - How to name a jQuery function to make a browser's back button work? -

-
i'm trying write function ajaxyfy web site, works perfect, except function button. that's have now: function loading() { if (typeof history.pushstate !== "undefined") { var historycount = 0; $('.menu-item, .logo').on('click','a',function(e){ e.preventdefault(); $(this).data('clicked', true); if ($(this).is('.logo a')) { var homepage = $(this).attr('href'); function1(homepage); history.pushstate(null, null, homepage); } else if ($(this).is('.projects a')) { var projects = $(this).attr('href'); function2(projects); history.pushstate(null, null, projects); } else { var pages = $(this).attr('href'); function3(pages); history.pushstate(null, null, pages); ...
Read more