Android學生信息管理系統(tǒng)APP

Android學生信息管理系統(tǒng)APP1、 需求分析為了方便的進行對學生數(shù)據(jù)庫的操作，本app可在android設備上進行對學生信息數(shù)據(jù)庫的信息管理功能，具體功能如下：1.對數(shù)據(jù)庫中所有學生姓名進行顯示，對各個條目進行點擊可展開具體信息2. 查詢數(shù)據(jù)：查詢數(shù)據(jù)是根據(jù)姓名與學號兩個條件進行查詢，兩者滿足任一條件則進行模糊查詢，兩個條件同時滿足則進行精確查詢，查詢結(jié)果界面與功能一中相同，以姓名排列，點擊展開所有信息3. 增加數(shù)據(jù)：在數(shù)據(jù)庫中增添條目，包括姓名（字符串），學號（數(shù)字，主鍵），性別（單選框），年齡（數(shù)字），專業(yè)（字符串）。每個條目均有誤輸入設定，且主鍵可檢查重復性，所有數(shù)據(jù)可檢查完整性，若插入成功則會顯示一條消息提示成功，若失敗則會提示檢查主鍵重復或者數(shù)據(jù)不完整4. 修改數(shù)據(jù)：根據(jù)姓名學號進行精確查找，查找成功后轉(zhuǎn)入修改界面，為了防止漏填與便捷修改界面會默認填充之前的數(shù)據(jù)（除學號），修改完畢即可更新，同樣會檢查數(shù)據(jù)完整性5. 刪除數(shù)據(jù)：根據(jù)姓名學號進行精確查找，查找成功則會進行刪除，并顯示一條刪除成功的提示，若失敗，也會進行提示2、 概念結(jié)構(gòu)設計 ER圖：3、 邏輯結(jié)構(gòu)設計學生：姓名（字符串）學號（數(shù)字，主碼）性別（單選框）年齡（數(shù)字）專業(yè)（字符串）create table student(name TEXT,NO TEXT Primary Key,sex TEXT,profession TEXT,age TEXT)4、 具體實現(xiàn)1.主界面：主界面顯示所有功能，每個按鈕點擊后，跳轉(zhuǎn)進入相應功能核心代碼：public class Main extends Activity SQLiteDatabase db;Button btn_search;Button btn_modify;Button btn_add;Button btn_delete;Button btn_quit;Button btn_show;Overrideprotected void onCreate(Bundle savedInstanceState) requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);super.onCreate(savedInstanceState);setContentView(R.layout.layout_main);/打開數(shù)據(jù)庫，若不存在，則創(chuàng)建db = SQLiteDatabase.openOrCreateDatabase(this.getFilesDir().toString()+/Student.db3, null);btn_search = (Button) 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.rawQuery(select * from student, null);cursor.close();catch(SQLiteException e)db.execSQL(create table student+ (+ name TEXT,+ NO TEXT Primary Key,+ sex TEXT,+ profession TEXT,+ age TEXT+ );/顯示所有數(shù)據(jù)按鈕的功能實現(xiàn)btn_show.setOnClickListener(new OnClickListener()public void onClick(View source) /獲取指針Cursor cursor = db.rawQuery(select * from student, null);/判斷數(shù)據(jù)庫是否不存在任何數(shù)據(jù)if(cursor.moveToFirst() = false)Toast.makeText(Main.this, 不存在記錄, Toast.LENGTH_SHORT).show();elseList p = new ArrayList();List re_name = new ArrayList();List info = new ArrayList();/保存搜索出的所有數(shù)據(jù)for(cursor.moveToFirst() ; !cursor.isAfterLast() ; cursor.moveToNext()int nameColume = cursor.getColumnIndex(name);int NOColume = cursor.getColumnIndex(NO);int proColume = cursor.getColumnIndex(profession);int sexColume = cursor.getColumnIndex(sex);int ageColume = cursor.getColumnIndex(age);Student student = new Student(); = 姓名:+cursor.getString(nameColume);student.NO = 學號:+cursor.getString(NOColume);student.sex = 性別:+cursor.getString(sexColume);fession = 專業(yè):+cursor.getString(proColume);student.age = 年齡:+cursor.getString(ageColume);p.add(student);String temp = student.MakeString();info.add(temp);String newname = cursor.getString(nameColume);re_name.add(newname);/對保存的數(shù)據(jù)進行封裝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(); = Cur_info;/將封裝的數(shù)據(jù)傳遞給結(jié)果界面的activityIntent intent = new Intent(Main.this,SearchResult.class);intent.putExtras(bundle);intent.putExtra(data, data);startActivity(intent);cursor.close(););/為剩下的按鈕綁定監(jiān)聽器實現(xiàn)跳轉(zhuǎn)功能btn_search.setOnClickListener(new OnClickListener()public void onClick(View source) Intent intent = new Intent(Main.this,Search.class);startActivity(intent););btn_modify.setOnClickListener(new OnClickListener()public void onClick(View source) Intent intent = new Intent(Main.this,Modify.class);startActivity(intent););btn_add.setOnClickListener(new OnClickListener()public void onClick(View source) Intent intent = new Intent(Main.this,Add.class);startActivity(intent););btn_delete.setOnClickListener(new OnClickListener()public void onClick(View source) Intent intent = new Intent(Main.this,Delete.class);startActivity(intent););btn_quit.setOnClickListener(new OnClickListener()public void onClick(View source) db.close();finish(););2. 數(shù)據(jù)顯示界面：按姓名排列，點擊條目展開具體信息核心代碼：public class SearchResult extends ActivitySuppressLint(RtlHardcoded)public void onCreate(Bundle savedInstanceState)requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);/獲取傳送來的數(shù)據(jù)super.onCreate(savedInstanceState);setContentView(R.layout.layout_result);final Intent intent = getIntent();BaseExpandableListAdapter adapter = new BaseExpandableListAdapter()/提取數(shù)據(jù)Bundle bundle = intent.getExtras();Student mem_data = (Student) getIntent().getExtras().get(data);String people = (String) bundle.getSerializable(name);String data = mem_;public Object getChild(int groupPosition,int childPosition)return datagroupPositionchildPosition;public long getChildId(int groupPosition,int childPosition)return childPosition;public int getChildrenCount(int groupPosition)return datagroupPosition.length;/設定每個子選項每行的顯示方式private TextView getTextView()AbsListView.LayoutParams lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);TextView textView = new TextView(SearchResult.this);textView.setLayoutParams(lp);textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);textView.setPadding(36, 0, 0, 0);textView.setTextSize(20);return textView;/設定每個子選項顯示內(nèi)容public View getChildView(int groupPosition , int childPosition,boolean isLastChild,View convertView,ViewGroup Parent)TextView textView = getTextView();textView.setText( +getChild(groupPosition,childPosition).toString();return textView;public Object getGroup(int groupPosition)return peoplegroupPosition;public int getGroupCount()return people.length;public long getGroupId(int groupPosition)return groupPosition;/設定每個組選項顯示內(nèi)容public View getGroupView(int groupPosition, boolean isExpanded ,View convertView , ViewGroup parnet)LinearLayout ll = new LinearLayout(SearchResult.this);ll.setOrientation(0);TextView textView = getTextView();textView.setText( +getGroup(groupPosition).toString();ll.addView(textView);return ll;ExpandableListView expandListView = (ExpandableListView) findViewById(R.id.list);expandListView.setAdapter(adapter);3. 增添數(shù)據(jù)界面：根據(jù)文本框輸入內(nèi)容進行數(shù)據(jù)的插入，且具有完整性和重復性的判斷，插入成功失敗均會產(chǎn)生提示核心代碼：public class Add extends Activity SQLiteDatabase db;Button btn_Accept;Button btn_Cancle;TextView ET_name;TextView ET_NO;TextView ET_Pro;TextView ET_Age;RadioGroup rg;String radio_sex = 男;Overrideprotected void onCreate(Bundle savedInstanceState) requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);super.onCreate(savedInstanceState);setContentView(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 = (TextView) findViewById(R.id.ET_Add_name);ET_NO = (TextView) findViewById(R.id.ET_Add_NO);ET_Pro = (TextView) findViewById(R.id.ET_Add_Pro);ET_Age = (TextView) findViewById(R.id.ET_Add_Age);rg = (RadioGroup) findViewById(R.id.rg);rg.setOnCheckedChangeListener(new OnCheckedChangeListener()public void onCheckedChanged(RadioGroup group, int CheckedId)radio_sex = CheckedId = R.id.rad_male ? 男 : 女;);/提交操作btn_Accept.setOnClickListener(new OnClickListener()public void onClick(View source) String name = ET_name.getText().toString();String NO = ET_NO.getText().toString();String sex = radio_sex;String pro = ET_Pro.getText().toString();String age = ET_Age.getText().toString();/規(guī)范性與完整性判斷try/插入數(shù)據(jù)db.execSQL(insert into student values( ?, ?, ?, ?, ?),new String name, NO, sex, pro, age);/規(guī)范性與完整性判斷catch(SQLiteException e)Toast.makeText(Add.this, 插入數(shù)據(jù)失敗，請檢查數(shù)據(jù)規(guī)范性與學號的唯一性, Toast.LENGTH_SHORT).show();return;Toast.makeText(Add.this, 成功插入一條數(shù)據(jù):+n+name+n+NO+n+sex+n+pro+n+age, Toast.LENGTH_SHORT).show(););btn_Cancle.setOnClickListener(new OnClickListener()public void onClick(View source) db.close();finish(););4. 修改數(shù)據(jù)界面：查找界面：對文本框內(nèi)輸入的數(shù)據(jù)進行精確查找，成功后轉(zhuǎn)入修改界面修改界面：文本框內(nèi)默認顯示之前的數(shù)據(jù)，修改完成點擊確定以文本框內(nèi)的信息對數(shù)據(jù)進行更新核心代碼：查找：btn_Accept.setOnClickListener(new OnClickListener()public void onClick(View source) String name = ET_Modify_Name.getText().toString();String NO = ET_Modify_No.getText().toString();Cursor cursor = db.rawQuery(select * from student where + name=? + and NO=? , new String name, NO);/判斷查找結(jié)果是否為空if(cursor.moveToFirst() = false)Toast.makeText(Modify.this, 記錄不存在, Toast.LENGTH_SHORT).show();elseString mem_name = null;String mem_No = null;String mem_profession = null;String mem_sex = null;String mem_age = null;/保存所有數(shù)據(jù)for(cursor.moveToFirst() ; !cursor.isAfterLast() ; cursor.moveToNext()int nameColume = cursor.getColumnIndex(name);int NoColume = cursor.getColumnIndex(NO);int proColume = cursor.getColumnIndex(profession);int sexColume = cursor.getColumnIndex(sex);int ageColume = cursor.getColumnIndex(age);mem_name = cursor.getString(nameColume);mem_No = cursor.getString(NoColume);mem_profession = cursor.getString(proColume);mem_sex = cursor.getString(sexColume);mem_age = cursor.getString(ageColume);/封裝所有數(shù)據(jù)Bundle bundle = new Bundle();bundle.putString(name, mem_name);bundle.putString(No, mem_No);bundle.putString(profession, mem_profession);bundle.putString(sex, mem_sex);bundle.putString(age, mem_age);/傳遞數(shù)據(jù)Intent intent = new Intent(Modify.this,ModifyResult.class);intent.putExtras(bundle);startActivity(intent);cursor.close(););btn_Cancle.setOnClickListener(new OnClickListener()public void onClick(View source) / TODO Auto-generated method stubdb.close();finish(););修改：public class ModifyResult extends ActivitySQLiteDatabase db;Button btn_accept;Button btn_cancle;TextView TextView_ModifyResult_No;EditText ET_ModifyResult_Name;EditText ET_ModifyResult_pro;EditText ET_ModifyResult_age;RadioGroup rg;String radio_sex;protected void onCreate(Bundle savedInstanceState)super.onCreate(savedInstanceState);setContentView(R.layout.layout_modifyresult);/獲取數(shù)據(jù)final Intent intent = getIntent();Bundle bundle = intent.getExtras();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);TextView_ModifyResult_No = (TextView) findViewById(R.id.TextView_ModifyResult_No);ET_ModifyResult_Name = (EditText) findViewById(R.id.ET_ModifyResult_Name);ET_ModifyResult_pro = (EditText) findViewById(R.id.ET_ModifyResult_pro);ET_ModifyResult_age = (EditText) findViewById(R.id.ET_ModifyResult_age);rg = (RadioGroup) findViewById(R.id.modify_rg);/設定默認數(shù)據(jù)String name = bundle.getString(name);final String No = bundle.getString(No);String pro = bundle.getString(profession);String age = bundle.getString(age);radio_sex = bundle.getString(sex);TextView_ModifyResult_No.setText(No);ET_ModifyResult_Name.setText(name);ET_ModifyResult_pro.setText(pro);ET_ModifyResult_age.setText(age);rg.setOnCheckedChangeListener(new OnCheckedChangeListener()public void onCheckedChanged(RadioGroup group, int CheckedId)radio_sex = CheckedId = R.id.rad_male ? 男 : 女;);btn_accept.setOnClickListener(new OnClickListener()public void onClick(View source) String new_name = ET_ModifyResult_Name.getText().toString();String new_profession = ET_ModifyResult_pro.getText().toString();String new_age = ET_ModifyResult_age.getText().toString();String new_sex = radio_sex;/更新數(shù)據(jù)trydb.execSQL(UPDATE student + SET name=? ,NO=? ,sex=? ,profession=? ,age=? + WHERE NO=?,new String new_name , No , new_sex , new_profession , new_age , No);catch(SQLiteException e)Toast.makeText(ModifyResult.this, 更新數(shù)據(jù)失敗, Toast.LENGTH_SHORT).show();return;Toast.makeText(ModifyResult.this, 更新數(shù)據(jù)成功, Toast.LENGTH_SHORT).show();finish(););btn_cancle.setOnClickListener(new OnClickListener()public void onClick(View source) db.close();finish(););5. 查找數(shù)據(jù)界面：對文本框內(nèi)的數(shù)據(jù)進行模糊查詢，查詢成功則跳轉(zhuǎn)只查詢結(jié)果界面，查詢失敗則產(chǎn)生相應提示核心代碼：public class Search extends Activity SQLiteDatabase db;Button btn_Accept;Button btn_Cancle;EditText ET_name;EditText ET_NO;Overrideprotected void onCreate(Bundle savedInstanceState) 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()+/Student.db3, null,SQLiteDatabase.OPEN_READWRITE);btn_Accept = (Button) findViewById(R.id.btn_Accept);btn_Cancle = (Button) findViewById(R.id.btn_Cancle);ET_name = (EditText) findViewById(R.id.ET_Search_name);ET_NO = (EditText) findViewById(R.id.ET_Search_NO);btn_Accept.setOnClickListener(new OnClickListener()public void onClick(View source) String name = ET_name.getText().toString();String NO = ET_NO.getText().toString();/獲取指針Cursor cursor = db.rawQuery(select * from student where + name=? /+ or + name=?+ or NO=? /+ or + NO=?, new String name, NO);/檢驗查找是否為空if(cursor.moveToFirst() = false)Toast.makeText(Search.this, 記錄不存在, Toast.LENGTH_SHORT).show();elseToast.makeText(Search.this, 成功, Toast.LENGTH_SHORT).show();/return;List p = new ArrayList();List re_name = new ArrayList();List info = new ArrayList();/保存數(shù)據(jù)for(cursor.moveToFirst() ; !cursor.isAfterLast() ; cursor.moveToNext()int nameColume = cursor.getColumnIndex(name);int NOColume = cursor.getColumnIndex(NO);int proColume = cursor.getColumnIndex(profession);int sexColume = cursor.getColumnIndex(sex);int ageColume = cursor.getColumnIndex(age);Student student = new Student(); = 姓名:+cursor.getString(nameColume);student.NO = 學號:+cursor.getString(NOColume);student.sex = 性別:+cursor.getString(sexColume);fession = 專業(yè):+cursor.getString(proColume);student.age = 年齡:+cursor.getString(ageColume);p.add(student);String temp = student.MakeString();info.add(temp);String newname = cursor.getString(nameColume);re_name.add(newname);/封裝數(shù)據(jù)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(); = Cur_i