Android学生信息管理系统APP

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1、-Android学生信息管理系统APP一、 需求分析为了方便的进展对学生数据库的操作，本app可在android设备上进展对学生信息数据库的信息管理功能，具体功能如下：1.对数据库中所有学生*进展显示，对各个条目进展点击可展开具体信息2. 查询数据：查询数据是根据*与*两个条件进展查询，两者满足任一条件则进展模糊查询，两个条件同时满足则进展准确查询，查询结果界面与功能一中一样，以*排列，点击展开所有信息3. 增加数据：在数据库中增添条目，包括*字符串，*数字，主键，性别单项选择框，年龄数字，专业字符串。每个条目均有误输入设定，且主键可检查重复性，所有数据可检查完整性，假设插入成功则会显示一条消

2、息提示成功，假设失败则会提示检查主键重复或者数据不完整4. 修改数据：根据*进展准确查找，查找成功后转入修改界面，为了防止漏填与便捷修改界面会默认填充之前的数据除*，修改完毕即可更新，同样会检查数据完整性5. 删除数据：根据*进展准确查找，查找成功则会进展删除，并显示一条删除成功的提示，假设失败，也会进展提示二、 概念构造设计 ER图：三、 逻辑构造设计学生：*字符串*数字，主码性别单项选择框年龄数字专业字符串create table student(name TE*T,NO TE*T Primary Key,se* TE*T,profession TE*T,age TE*T)四、 具体实现1

3、.主界面：主界面显示所有功能，每个按钮点击后，跳转进入相应功能核心代码：publicclass Main e*tends Activity SQLiteDatabase db;Button btn_search;Button btn_modify;Button btn_add;Button btn_delete;Button btn_quit;Button btn_show;Overrideprotectedvoid onCreate(Bundle savedInstanceState) requestWindowFeature(Window.FEATURE_NO_TITLE);getWind

4、ow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);super.onCreate(savedInstanceState);setContentView(R.layout.layout_main);/翻开数据库，假设不存在，则创立db = SQLiteDatabase.openOrCreateDatabase(this.getFilesDir().toString()+/Student.db3, null);btn_search = (Butto

5、n) findViewById(R.id.btn_search);btn_modify = (Button) findViewById(R.id.btn_modify);btn_add = (Button) findViewById(R.id.btn_add);btn_delete = (Button) findViewById(R.id.btn_delete);btn_quit = (Button) findViewById(R.id.btn_quit);btn_show = (Button) findViewById(R.id.Btn_show);tryCursor cursor = db

6、.rawQuery(select * from student, null);cursor.close();catch(SQLiteE*ception e)db.e*ecSQL(create table student+ (+ name TE*T,+ NO TE*T Primary Key,+ se* TE*T,+ profession TE*T,+ age TE*T+ );/显示所有数据按钮的功能实现btn_show.setOnClickListener(new OnClickListener()publicvoid onClick(View source) /获取指针Cursor curs

7、or = db.rawQuery(select * from student, null);/判断数据库是否不存在任何数据if(cursor.moveToFirst() = false)Toast.makeTe*t(Main.this, 不存在记录, Toast.LENGTH_SHORT).show();elseList p = new ArrayList();List re_name = new ArrayList();List info = new ArrayList();/保存搜索出的所有数据for(cursor.moveToFirst() ; !cursor.isAfterLast()

8、 ; cursor.moveToNe*t()int nameColume = cursor.getColumnInde*(name);int NOColume = cursor.getColumnInde*(NO);int proColume = cursor.getColumnInde*(profession);int se*Colume = cursor.getColumnInde*(se*);int ageColume = cursor.getColumnInde*(age);Student student = new Student();student.name = *:+cursor

9、.getString(nameColume);student.NO = *:+cursor.getString(NOColume);student.se* = 性别:+cursor.getString(se*Colume);student.profession = 专业:+cursor.getString(proColume);student.age = 年龄:+cursor.getString(ageColume);p.add(student);String temp = student.MakeString();info.add(temp);String newname = cursor.

10、getString(nameColume);re_name.add(newname);/对保存的数据进展封装String Cur_name = new Stringre_name.size();Cur_name = re_name.toArray(Cur_name);String Cur_info = new Stringinfo.size();Cur_info = info.toArray(Cur_info);Bundle bundle = new Bundle();bundle.putStringArray(name, Cur_name);Student data = new Studen

11、t();data.info = Cur_info;/将封装的数据传递给结果界面的activityIntent intent =new Intent(Main.this,SearchResult.class);intent.putE*tras(bundle);intent.putE*tra(data, data);startActivity(intent);cursor.close(););/为剩下的按钮绑定监听器实现跳转功能btn_search.setOnClickListener(new OnClickListener()publicvoid onClick(View source) Int

12、ent intent = new Intent(Main.this,Search.class);startActivity(intent););btn_modify.setOnClickListener(new OnClickListener()publicvoid onClick(View source) Intent intent = new Intent(Main.this,Modify.class);startActivity(intent););btn_add.setOnClickListener(new OnClickListener()publicvoid onClick(Vie

13、w source) Intent intent = new Intent(Main.this,Add.class);startActivity(intent););btn_delete.setOnClickListener(new OnClickListener()publicvoid onClick(View source) Intent intent = new Intent(Main.this,Delete.class);startActivity(intent););btn_quit.setOnClickListener(new OnClickListener()publicvoid

14、onClick(View source) db.close();finish(););2. 数据显示界面：按*排列，点击条目展开具体信息核心代码：publicclass SearchResult e*tends ActivitySuppressLint(RtlHardcoded)publicvoid onCreate(Bundle savedInstanceState)requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, Win

15、dowManager.LayoutParams.FLAG_FULLSCREEN);/获取传送来的数据super.onCreate(savedInstanceState);setContentView(R.layout.layout_result);final Intent intent = getIntent();BaseE*pandableListAdapter adapter = new BaseE*pandableListAdapter()/提取数据Bundle bundle = intent.getE*tras();Student mem_data = (Student) getInt

16、ent().getE*tras().get(data);String people = (String) bundle.getSerializable(name);String data = mem_data.info;public Object getChild(int groupPosition,int childPosition)returndatagroupPositionchildPosition;publiclong getChildId(int groupPosition,int childPosition)return childPosition;publicint getCh

17、ildrenCount(int groupPosition)returndatagroupPosition.length;/设定每个子选项每行的显示方式private Te*tView getTe*tView()AbsListView.LayoutParams lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);Te*tView te*tView = new Te*tView(SearchResult.this);te*tView.

18、setLayoutParams(lp);te*tView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);te*tView.setPadding(36, 0, 0, 0);te*tView.setTe*tSize(20);return te*tView;/设定每个子选项显示内容public View getChildView(int groupPosition , int childPosition,boolean isLastChild,View convertView,ViewGroup Parent)Te*tView te*tView

19、 = getTe*tView();te*tView.setTe*t( +getChild(groupPosition,childPosition).toString();return te*tView;public Object getGroup(int groupPosition)returnpeoplegroupPosition;publicint getGroupCount()returnpeople.length;publiclong getGroupId(int groupPosition)return groupPosition;/设定每个组选项显示内容public View ge

20、tGroupView(int groupPosition, boolean isE*panded ,View convertView , ViewGroup parnet)LinearLayout ll = new LinearLayout(SearchResult.this);ll.setOrientation(0);Te*tView te*tView = getTe*tView();te*tView.setTe*t( +getGroup(groupPosition).toString();ll.addView(te*tView);return ll;E*pandableListView e

21、*pandListView = (E*pandableListView) findViewById(R.id.list);e*pandListView.setAdapter(adapter);3. 增添数据界面：根据文本框输入内容进展数据的插入，且具有完整性和重复性的判断，插入成功失败均会产生提示核心代码：publicclass Add e*tends Activity SQLiteDatabase db;Button btn_Accept;Button btn_Cancle;Te*tView ET_name;Te*tView ET_NO;Te*tView ET_Pro;Te*tView ET

22、_Age;RadioGroup rg;String radio_se* = 男;Overrideprotectedvoid onCreate(Bundle savedInstanceState) requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);super.onCreate(savedInstanceState);setContentVi

23、ew(R.layout.layout_add);db = SQLiteDatabase.openDatabase(this.getFilesDir().toString()+/Student.db3, null,SQLiteDatabase.OPEN_READWRITE);btn_Accept = (Button) findViewById(R.id.btn_Accept);btn_Cancle = (Button) findViewById(R.id.btn_Cancle);ET_name = (Te*tView) findViewById(R.id.ET_Add_name);ET_NO =

24、 (Te*tView) findViewById(R.id.ET_Add_NO);ET_Pro = (Te*tView) findViewById(R.id.ET_Add_Pro);ET_Age = (Te*tView) findViewById(R.id.ET_Add_Age);rg = (RadioGroup) findViewById(R.id.rg);rg.setOnCheckedChangeListener(new OnCheckedChangeListener()publicvoid onCheckedChanged(RadioGroup group, int CheckedId)

25、radio_se* = CheckedId = R.id.rad_male 男 : 女;);/提交操作btn_Accept.setOnClickListener(new OnClickListener()publicvoid onClick(View source) String name = ET_name.getTe*t().toString();String NO = ET_NO.getTe*t().toString();String se* = radio_se*;String pro = ET_Pro.getTe*t().toString();String age = ET_Age.

26、getTe*t().toString();/标准性与完整性判断try/插入数据db.e*ecSQL(insert into student values( , , , , ),new String name, NO, se*, pro, age);/标准性与完整性判断catch(SQLiteE*ception e)Toast.makeTe*t(Add.this, 插入数据失败，请检查数据标准性与*的唯一性, Toast.LENGTH_SHORT).show();return;Toast.makeTe*t(Add.this, 成功插入一条数据:+n+name+n+NO+n+se*+n+pro+n

27、+age, Toast.LENGTH_SHORT).show(););btn_Cancle.setOnClickListener(new OnClickListener()publicvoid onClick(View source) db.close();finish(););4. 修改数据界面：查找界面：对文本框内输入的数据进展准确查找，成功后转入修改界面修改界面：文本框内默认显示之前的数据，修改完成点击确定以文本框内的信息对数据进展更新核心代码：查找：btn_Accept.setOnClickListener(new OnClickListener()publicvoid onClick

28、(View source) String name = ET_Modify_Name.getTe*t().toString();String NO = ET_Modify_No.getTe*t().toString();Cursor cursor = db.rawQuery(select * from student where + name=+ and NO=, new String name, NO);/判断查找结果是否为空if(cursor.moveToFirst() = false)Toast.makeTe*t(Modify.this, 记录不存在, Toast.LENGTH_SHOR

29、T).show();elseString mem_name = null;String mem_No = null;String mem_profession = null;String mem_se* = null;String mem_age = null;/保存所有数据for(cursor.moveToFirst() ; !cursor.isAfterLast() ; cursor.moveToNe*t()int nameColume = cursor.getColumnInde*(name);int NoColume = cursor.getColumnInde*(NO);int pr

30、oColume = cursor.getColumnInde*(profession);int se*Colume = cursor.getColumnInde*(se*);int ageColume = cursor.getColumnInde*(age);mem_name = cursor.getString(nameColume);mem_No = cursor.getString(NoColume);mem_profession = cursor.getString(proColume);mem_se* = cursor.getString(se*Colume);mem_age = c

31、ursor.getString(ageColume);/封装所有数据Bundle bundle = new Bundle();bundle.putString(name, mem_name);bundle.putString(No, mem_No);bundle.putString(profession, mem_profession);bundle.putString(se*, mem_se*);bundle.putString(age, mem_age);/传递数据Intent intent = new Intent(Modify.this,ModifyResult.class);inte

32、nt.putE*tras(bundle);startActivity(intent);cursor.close(););btn_Cancle.setOnClickListener(new OnClickListener()publicvoid onClick(View source) / TODO Auto-generated method stubdb.close();finish(););修改：publicclass ModifyResult e*tends ActivitySQLiteDatabase db;Button btn_accept;Button btn_cancle;Te*t

33、View Te*tView_ModifyResult_No;EditTe*t ET_ModifyResult_Name;EditTe*t ET_ModifyResult_pro;EditTe*t ET_ModifyResult_age;RadioGroup rg;String radio_se*;protectedvoid onCreate(Bundle savedInstanceState)super.onCreate(savedInstanceState);setContentView(R.layout.layout_modifyresult);/获取数据final Intent inte

34、nt = getIntent();Bundle bundle = intent.getE*tras();db = SQLiteDatabase.openDatabase(this.getFilesDir().toString()+/Student.db3, null,SQLiteDatabase.OPEN_READWRITE);btn_accept = (Button) findViewById(R.id.btn_modifyresult_accept);btn_cancle = (Button) findViewById(R.id.btn_modifyresult_cancle);Te*tV

35、iew_ModifyResult_No = (Te*tView) findViewById(R.id.Te*tView_ModifyResult_No);ET_ModifyResult_Name = (EditTe*t) findViewById(R.id.ET_ModifyResult_Name);ET_ModifyResult_pro = (EditTe*t) findViewById(R.id.ET_ModifyResult_pro);ET_ModifyResult_age = (EditTe*t) findViewById(R.id.ET_ModifyResult_age);rg =

36、(RadioGroup) findViewById(R.id.modify_rg);/设定默认数据String name = bundle.getString(name);final String No = bundle.getString(No);String pro = bundle.getString(profession);String age = bundle.getString(age);radio_se* = bundle.getString(se*);Te*tView_ModifyResult_No.setTe*t(No);ET_ModifyResult_Name.setTe*

37、t(name);ET_ModifyResult_pro.setTe*t(pro);ET_ModifyResult_age.setTe*t(age);rg.setOnCheckedChangeListener(new OnCheckedChangeListener()publicvoid onCheckedChanged(RadioGroup group, int CheckedId)radio_se* = CheckedId = R.id.rad_male 男 : 女;);btn_accept.setOnClickListener(new OnClickListener()publicvoid

38、 onClick(View source) String new_name = ET_ModifyResult_Name.getTe*t().toString();String new_profession = ET_ModifyResult_pro.getTe*t().toString();String new_age = ET_ModifyResult_age.getTe*t().toString();String new_se* = radio_se*;/更新数据trydb.e*ecSQL(UPDATE student + SET name= ,NO= ,se*= ,profession

39、= ,age= + WHERE NO=,new String new_name , No , new_se* , new_profession , new_age , No);catch(SQLiteE*ception e)Toast.makeTe*t(ModifyResult.this, 更新数据失败, Toast.LENGTH_SHORT).show();return;Toast.makeTe*t(ModifyResult.this, 更新数据成功, Toast.LENGTH_SHORT).show();finish(););btn_cancle.setOnClickListener(ne

40、w OnClickListener()publicvoid onClick(View source) db.close();finish(););5. 查找数据界面：对文本框内的数据进展模糊查询，查询成功则跳转只查询结果界面，查询失败则产生相应提示核心代码：publicclass Search e*tends Activity SQLiteDatabase db;Button btn_Accept;Button btn_Cancle;EditTe*t ET_name;EditTe*t ET_NO;Overrideprotectedvoid onCreate(Bundle savedInstan

41、ceState) requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);super.onCreate(savedInstanceState);setContentView(R.layout.layout_search);db = SQLiteDatabase.openDatabase(this.getFilesDir().toString()

42、+/Student.db3, null,SQLiteDatabase.OPEN_READWRITE);btn_Accept = (Button) findViewById(R.id.btn_Accept);btn_Cancle = (Button) findViewById(R.id.btn_Cancle);ET_name = (EditTe*t) findViewById(R.id.ET_Search_name);ET_NO = (EditTe*t) findViewById(R.id.ET_Search_NO);btn_Accept.setOnClickListener(new OnCli

43、ckListener()publicvoid onClick(View source) String name = ET_name.getTe*t().toString();String NO = ET_NO.getTe*t().toString();/获取指针Cursor cursor = db.rawQuery(select * from student where + name=/+ or + name=+ or NO=/+ or + NO=, new String name, NO);/检验查找是否为空if(cursor.moveToFirst() = false)Toast.make

44、Te*t(Search.this, 记录不存在, Toast.LENGTH_SHORT).show();elseToast.makeTe*t(Search.this, 成功, Toast.LENGTH_SHORT).show();/return;List p = new ArrayList();List re_name = new ArrayList();List info = new ArrayList();/保存数据for(cursor.moveToFirst() ; !cursor.isAfterLast() ; cursor.moveToNe*t()int nameColume = c

45、ursor.getColumnInde*(name);int NOColume = cursor.getColumnInde*(NO);int proColume = cursor.getColumnInde*(profession);int se*Colume = cursor.getColumnInde*(se*);int ageColume = cursor.getColumnInde*(age);Student student = new Student();student.name = *:+cursor.getString(nameColume);student.NO = *:+c

46、ursor.getString(NOColume);student.se* = 性别:+cursor.getString(se*Colume);student.profession = 专业:+cursor.getString(proColume);student.age = 年龄:+cursor.getString(ageColume);p.add(student);String temp = student.MakeString();info.add(temp);String newname = cursor.getString(nameColume);re_name.add(newnam

47、e);/封装数据String Cur_name = new Stringre_name.size();Cur_name = re_name.toArray(Cur_name);String Cur_info = new Stringinfo.size();Cur_info = info.toArray(Cur_info);Bundle bundle = new Bundle();bundle.putStringArray(name, Cur_name);Student data = new Student();data.info = Cur_info;/传递数据Intent intent =

48、new Intent(Search.this,SearchResult.class);intent.putE*tras(bundle);intent.putE*tra(data, data);startActivity(intent);cursor.close(););btn_Cancle.setOnClickListener(new OnClickListener()publicvoid onClick(View source) db.close();finish(););6. 删除数据界面：对文本框内输入的内容进展准确查询，假设查询成功则对对应的条目进展删除，并提示删除成功，假设失败，则提

49、示删除失败核心代码：/确定按钮点击后的监听事件btn_Accept.setOnClickListener(new OnClickListener()publicvoid onClick(View source) String name = ET_Modify_Name.getTe*t().toString();String NO = ET_Modify_No.getTe*t().toString();/查询数据Cursor cursor = db.rawQuery(select * from student where + name=+ and NO=, new String name, NO

50、);if(cursor.moveToFirst() = false)Toast.makeTe*t(Delete.this, 记录不存在, Toast.LENGTH_SHORT).show();elsetrydb.e*ecSQL(delete from student + where name=+ and NO=,new String name, NO);/假设查询失败则提示删除失败catch(SQLiteE*ception e)Toast.makeTe*t(Delete.this, 删除失败, Toast.LENGTH_SHORT).show();return;/假设查询成功，则提示记录已经删

51、除Toast.makeTe*t(Delete.this, 一条记录已删除, Toast.LENGTH_SHORT).show();cursor.close();finish(););/取消按钮点击后的监听事件btn_Cancle.setOnClickListener(new OnClickListener()publicvoid onClick(View source) db.close();finish(););附：student类的定义publicclass Student implements SerializableprivatestaticfinallongserialVersion

52、UID = 1L;public String name;public String NO;public String se*;public String profession;public String age;public String MakeString()String s = name,NO,se*,profession,age;return s;public String info;五、 总结这个安卓app实现了对数据库操作的根本功能，使用起来简便性强，轻便直接，因为是可视化编程，所以对于界面也进展了一定程度的美化，对应的编写平台是手机，所以实现的功能都是以简单实用美观为根底，并且同

53、时保证强健性为目标，但是同样因为这个原因在查询功能上，功能比较简单，比方查询操作，只能在满足根本的查询功能上添加简易的模糊查询，并且查找条件比较单一，因此，仍然可以在此方面做出改进. z.-计算机科学与技术学院课程设计成绩单课程名称：数据库系统原理课程设计 *詹博策性别男*5班级DB1302综合成绩成绩等级程序运行情况占总成绩20%能正确运行 根本能正确运行 能运行但结果不完善20分 15分 10分程序功能完善程度占总成绩10%完善 根本完善 不完善10分 8分 5分程序构造的合理性占总成绩10%合理 根本合理 不太合理10分 8分 5分对问题的辩论情况占总成绩40%概念正确有创新 40分能正确答复所有问题 35分根本能正确答复 30分 局部问题答复概念不清晰 20分学生的工作态度与独立工作能力占总成绩10%工作态度认真能独立完成任务 10分工作态度根本认真，独立性尚可 8分工作态度和独立性较差 5分设计报告的标准性占总成绩10%符合标准 根本符合标准 标准性较差10分 8分 5分A：90100分 A-：8589分 B+：8284分 B：7881分 B-：7577分 C+：7274分 C：6871分 C-：6467分 D：6063分 F：60分 *科技大学计算机科学与技术学院制表. z.