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  • Andriod小型管理系统(Activity,SQLite库操作,ListView操作)(源代码下载)

    学习了一阵子的Android开发技术,花了几天,把不懂的,懂的晚上实践了一下,使用常用的各种方法

    过几天要考驾校理论了,得看书了

    系统登录时会自动添加用户 admin admin 登录后添加新记录,删除记录,修改密码等操作

    上图

    系统登录

     

    数据列表
     

    信息添加
     

    修改密码

     

     

    系统登录代码:

     

         butlogin.setOnClickListener(new OnClickListener() {
                
                @Override
                public void onClick(View v) {
                    
                    String user=txtuser.getText().toString();
                    String Pass=txtpass.getText().toString();
                //    showDialog(user+"aaaaaaaaaaaaaaaaaaa"+Pass);    
                    
                    DBHelper dbhelper=new DBHelper(getApplicationContext());
                    Cursor c=dbhelper.queryUser();
                      if(c.getCount()>0)
                      {
                    
                          if(c.moveToFirst())
                         {
                              
                               c.move(0);
                               String id=c.getString(0);
                               String username=c.getString(1);
                               String userpass=c.getString(2);
                               if(user.equals(username)&&Pass.equals(userpass))
                               {
                                 //  showDialog("正确");
                                   
                                   Intent intent=new Intent(Login.this,manage.class);
                                    startActivity(intent);
                                   
                               }
                               else
                               {
                                                       
                                   showDialog("用户名或密码错误");
                                   
                                 
                               }
                             
                              
                             
                        
                          }
                      }
                      else
                      {
                            ContentValues values=new ContentValues();
                            values.put("username", "admin");
                            values.put("userpass", "admin");
                            
                            DBHelper helper=new DBHelper(getApplicationContext());
                            helper.insertUser(values);
                            
                            Intent intent=new Intent(Login.this,manage.class);
                            startActivity(intent);
                          
                      }
                    
                    
                    
                }    
            });
            
            

           

    代码比较简单,不贴了,具体请看代码 

    源代码下载

    点击下载

     

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  • 原文地址:https://www.cnblogs.com/Guroer/p/2232147.html
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