直接可用的Android studio学生信息管理系统

发布时间：2020-10-09 20:10:05 来源：脚本之家阅读：212 作者：Dragonxxl 栏目：移动开发

百度上流传最广的版本有所欠缺，并不能直接使用，同时有很多不必要的功能，这是我进行删减、修改、核查后的版本，根据下面的步骤一步步来直接能够运行程序。

本程序实现的功能是增删改查以及全选

首先是程序提纲

主要部分是java文件和xml文件。

activity放在java文件里面，xml文件就是布局文件，用来规定界面的显示格式。

直接可用的Android studio学生信息管理系统

类定义的Java文件

StudentDao
StudnetDBHelper
Student
TableContanst

其他文件

string .xml
color.xml
styles.xml
AndroidManifest.xml(自定义的活动需要手动添加到此文件中)

下面看看我的文件目录

直接可用的Android studio学生信息管理系统

值得注意的是，menu.xml不是放在layout目录下，而是放在menu目录下。

然后依次介绍各个activity的代码

主界面是StudentListActivity

代码如下

java文件：StudentListActivity

package com.example.asus.student;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
import StudentDBHelper.StudentDBHelper;
import Student.Student;
//import AddStudentActivity;
import TableContanst.TableContanst;

public class StudentListActivity extends ListActivity implements
  OnClickListener, OnItemClickListener, OnItemLongClickListener {

 private static final String TAG = "TestSQLite";
 private Button addStudent;
 private Cursor cursor;
 private SimpleCursorAdapter adapter;
 private ListView listView;
 private List<Long> list;
 private RelativeLayout relativeLayout;
 private Button searchButton;
 private Button selectButton;
 private Button deleteButton;
 private Button selectAllButton;
 private Button canleButton;
 private LinearLayout layout;
 private StudentDao dao;
 private Student student;
 private Boolean isDeleteList = false;

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  Log.e(TAG, "onCreate");
  list = new ArrayList<Long>();
  student = new Student();
  dao = new StudentDao(new StudentDBHelper(this));
  addStudent = (Button) findViewById(R.id.btn_add_student);
  searchButton = (Button) findViewById(R.id.bn_search_id);
  selectButton = (Button) findViewById(R.id.bn_select);
  deleteButton = (Button) findViewById(R.id.bn_delete);
  selectAllButton = (Button) findViewById(R.id.bn_selectall);
  canleButton = (Button) findViewById(R.id.bn_canel);
  layout = (LinearLayout) findViewById(R.id.showLiner);
  relativeLayout=(RelativeLayout) findViewById(R.id.RelativeLayout);
  listView = getListView();

  // 为按键设置监听
  addStudent.setOnClickListener(this);
  searchButton.setOnClickListener(this);
  selectButton.setOnClickListener(this);
  deleteButton.setOnClickListener(this);
  canleButton.setOnClickListener(this);
  selectAllButton.setOnClickListener(this);
  listView.setOnItemClickListener(this);
  listView.setOnItemLongClickListener(this);
  listView.setOnCreateContextMenuListener(this);

 }

 // 调用load()方法将数据库中的所有记录显示在当前页面
 @Override
 protected void onStart() {
  super.onStart();
  load();

 }

 public void onClick(View v) {
  // 跳转到添加信息的界面
  if (v == addStudent) {
   startActivity(new Intent(StudentListActivity.this, AddStudentActivity.class));
  } else if (v == searchButton) {
   // 跳转到查询界面
   startActivity(new Intent(this, StudentSearch.class));
  } else if (v == selectButton) {
   // 跳转到选择界面
   isDeleteList = !isDeleteList;
   if (isDeleteList) {
    checkOrClearAllCheckboxs(true);
   } else {
    showOrHiddenCheckBoxs(false);
   }
  } else if (v == deleteButton) {
   // 删除数据
   if (list.size() > 0) {
    for (int i = 0; i < list.size(); i++) {
     long id = list.get(i);
     Log.e(TAG, "delete id=" + id);
     int count = dao.deleteStudentById(id);
    }
    dao.closeDB();
    load();
   }
  } else if (v == canleButton) {
   // 点击取消，回到初始界面
   load();
   layout.setVisibility(View.GONE);
   isDeleteList = !isDeleteList;
  } else if (v == selectAllButton) {
   // 全选，如果当前全选按钮显示是全选，则在点击后变为取消全选，如果当前为取消全选，则在点击后变为全选
   selectAllMethods();
 }
 }

 // 创建菜单
 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
  MenuInflater inflater = new MenuInflater(this); //getMenuInflater();
  inflater.inflate(R.menu.menu, menu);
 }

 // 对菜单中的按钮添加响应时间
 @Override
 public boolean onContextItemSelected(MenuItem item) {
  int item_id = item.getItemId();
  student = (Student) listView.getTag();
  Log.v(TAG, "TestSQLite++++student+" + listView.getTag() + "");
  final long student_id = student.getId();
  Intent intent = new Intent();
  Log.v(TAG, "TestSQLite+++++++id"+student_id);
  switch (item_id) {
   /* 添加
   case R.id.add:
    startActivity(new Intent(this, AddStudentActivity.class));
    break;*/
   // 删除
   case R.id.delete:
    deleteStudentInformation(student_id);
    break;
   case R.id.look:
    // 查看学生信息
    Log.v(TAG, "TestSQLite+++++++look"+student+"");
    intent.putExtra("student", student);
    intent.setClass(this, ShowStudentActivity.class);
    this.startActivity(intent);
    break;
   case R.id.write:
    // 修改学生信息
    intent.putExtra("student", student);
    intent.setClass(this, AddStudentActivity.class);
    this.startActivity(intent);
    break;
   default:
    break;
  }
  return super.onContextItemSelected(item);
 }

  @Override
 public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id)
 {
  Student student = (Student) dao.getStudentFromView(view, id);
  listView.setTag(student);
  registerForContextMenu(listView);
  return false;
 }

 // 点击一条记录是触发的事件
 @Override
 public void onItemClick(AdapterView<?> parent, View view, int position,
       long id) {
  if (!isDeleteList) {
   student = dao.getStudentFromView(view, id);
   Log.e(TAG, "student*****" + dao.getStudentFromView(view, id));
   Intent intent = new Intent();
   intent.putExtra("student", student);
   intent.setClass(this, ShowStudentActivity.class);
   this.startActivity(intent);
  } else {
   CheckBox box = (CheckBox) view.findViewById(R.id.cb_box);
   box.setChecked(!box.isChecked());
   list.add(id);
   deleteButton.setEnabled(box.isChecked());
  }
 }

 // 自定义一个加载数据库中的全部记录到当前页面的无参方法
 public void load() {
  StudentDBHelper studentDBHelper = new StudentDBHelper(
    StudentListActivity.this);
  SQLiteDatabase database = studentDBHelper.getWritableDatabase();
  cursor = database.query(TableContanst.STUDENT_TABLE, null, null, null,
    null, null, TableContanst.StudentColumns.MODIFY_TIME + " desc");
  startManagingCursor(cursor);
  adapter = new SimpleCursorAdapter(this, R.layout.student_list_item,
    cursor, new String[] { TableContanst.StudentColumns.ID,
    TableContanst.StudentColumns.NAME,
    TableContanst.StudentColumns.AGE,
    TableContanst.StudentColumns.SEX,
    TableContanst.StudentColumns.LIKES,
    TableContanst.StudentColumns.PHONE_NUMBER,
    TableContanst.StudentColumns.TRAIN_DATE }, new int[] {
    R.id.tv_stu_id, R.id.tv_stu_name, R.id.tv_stu_age,
    R.id.tv_stu_sex, R.id.tv_stu_likes, R.id.tv_stu_phone,
    R.id.tv_stu_traindate });
  listView.setAdapter(adapter);
 }

 // 全选或者取消全选
 private void checkOrClearAllCheckboxs(boolean b) {
  int childCount = listView.getChildCount();
   Log.e(TAG, "list child size=" + childCount);
  for (int i = 0; i < childCount; i++) {
   View view = listView.getChildAt(i);
   if (view != null) {
    CheckBox box = (CheckBox) view.findViewById(R.id.cb_box);
    box.setChecked(!b);
   }
  }
  showOrHiddenCheckBoxs(true);
 }

 // 显示或者隐藏自定义菜单
 private void showOrHiddenCheckBoxs(boolean b) {
  int childCount = listView.getChildCount();
  Log.e(TAG, "list child size=" + childCount);
  for (int i = 0; i < childCount; i++) {
   View view = listView.getChildAt(i);
   if (view != null) {
    CheckBox box = (CheckBox) view.findViewById(R.id.cb_box);
    int visible = b ? View.VISIBLE : View.GONE;
    box.setVisibility(visible);
    layout.setVisibility(visible);
    deleteButton.setEnabled(false);
   }
  }
 }

 // 自定义一个利用对话框形式进行数据的删除

 private void deleteStudentInformation(final long delete_id) {
  // 利用对话框的形式删除数据
  AlertDialog.Builder builder = new AlertDialog.Builder(this);
  builder.setTitle("学员信息删除")
    .setMessage("确定删除所选记录?")
    .setCancelable(false)
    .setPositiveButton("确定", new DialogInterface.OnClickListener() {
     public void onClick(DialogInterface dialog, int id) {
      int raws = dao.deleteStudentById(delete_id);
      layout.setVisibility(View.GONE);
      isDeleteList = !isDeleteList;
      load();
      if (raws > 0) {
       Toast.makeText(StudentListActivity.this, "删除成功!",
         Toast.LENGTH_LONG).show();
      } else
       Toast.makeText(StudentListActivity.this, "删除失败!",
         Toast.LENGTH_LONG).show();
     }
    })
    .setNegativeButton("取消", new DialogInterface.OnClickListener() {
     public void onClick(DialogInterface dialog, int id) {
      dialog.cancel();
     }
    });
  AlertDialog alert = builder.create();
  alert.show();
 }

 // 点击全选事件时所触发的响应
 private void selectAllMethods() {
  // 全选，如果当前全选按钮显示是全选，则在点击后变为取消全选，如果当前为取消全选，则在点击后变为全选
  if (selectAllButton.getText().toString().equals("全选")) {
   int childCount = listView.getChildCount();
   for (int i = 0; i < childCount; i++) {
    View view = listView.getChildAt(i);
    if (view != null) {
     CheckBox box = (CheckBox) view.findViewById(R.id.cb_box);
     box.setChecked(true);
     deleteButton.setEnabled(true);
     selectAllButton.setText("取消全选");
    }
   }
  } else if (selectAllButton.getText().toString().equals("取消全选")) {
   checkOrClearAllCheckboxs(true);
   deleteButton.setEnabled(false);
   selectAllButton.setText("全选");
  }
 }
}

布局文件：main.xml和student_list_item.xml

代码如下

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <RelativeLayout android:id="@+id/RelativeLayout"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content">
  <Button android:id="@+id/bn_search_id"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="搜索"
   android:gravity="center_vertical" />
  <Button android:gravity="center"
   android:text="添加学员信息"
   android:id="@+id/btn_add_student"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_alignParentTop="true"
   android:layout_toRightOf="@+id/bn_search_id"
   android:layout_toLeftOf="@+id/bn_select" />
  <Button android:gravity="center_vertical"
   android:text="选择"
   android:id="@+id/bn_select"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_alignParentTop="true"
   android:layout_alignParentRight="true"></Button>
 </RelativeLayout>
 <TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:gravity="center"
  android:text="  ID   姓 名    年 龄   性 别  "
  />

 <ListView
  android:id="@android:id/list"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />

 <LinearLayout
  android:orientation="horizontal"
  android:id="@+id/showLiner"
  android:visibility="gone"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal">
  <Button
   android:id="@+id/bn_delete"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_weight="1"
   android:text="删除"
   android:enabled="false"
   />
  <Button
   android:id="@+id/bn_selectall"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_weight="1"
   android:text="全选"
   />
  <Button
   android:id="@+id/bn_canel"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_weight="1"
   android:text="取消"
   />
 </LinearLayout>
</LinearLayout>

student_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="horizontal"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content" >
 <ImageView android:layout_width="fill_parent"
  android:layout_height="130px"
  android:layout_gravity="center"
  android:layout_weight="1"
  android:background="@drawable/icon" />
 <TextView android:id="@+id/tv_stu_id"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"/>
 <TextView android:id="@+id/tv_stu_name"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"/>

 <TextView android:id="@+id/tv_stu_age"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"/>
 <TextView android:id="@+id/tv_stu_sex"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"/>

 <TextView android:id="@+id/tv_stu_likes"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:visibility="gone"/>
 <TextView android:id="@+id/tv_stu_phone"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:visibility="gone"/>
 <TextView android:id="@+id/tv_stu_traindate"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:layout_weight="1"
  android:visibility="gone"/>
 <TextView android:id="@+id/tv_stu_modifyDateTime"
  android:layout_width="fill_parent"
  android:layout_gravity="center"
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:visibility="gone"/>

 <CheckBox
  android:id="@+id/cb_box"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:visibility="gone"
  android:checked="false"
  android:focusable="false"/>
</LinearLayout>

展示单条记录详细信息的ShowStudentActivity

代码如下

java文件：ShowStudentActivity

package com.example.asus.student;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import Student.Student;
import TableContanst.TableContanst;
public class ShowStudentActivity extends Activity {
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.student_info);
  Intent intent = getIntent();
  Student student = (Student) intent.getSerializableExtra(TableContanst.STUDENT_TABLE);
  ((TextView)findViewById(R.id.tv_info_id)).setText(student.getId()+"");
  ((TextView)findViewById(R.id.tv_info_name)).setText(student.getName());
  ((TextView)findViewById(R.id.tv_info_age)).setText(student.getAge()+"");
  ((TextView)findViewById(R.id.tv_info_sex)).setText(student.getSex());
  ((TextView)findViewById(R.id.tv_info_likes)).setText(student.getLike());
  ((TextView)findViewById(R.id.tv_info_train_date)).setText(student.getTrainDate());
  ((TextView)findViewById(R.id.tv_info_phone)).setText(student.getPhoneNumber());
 }
 public void goBack(View view) {
  finish();
 }
}

布局文件：student_info.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:padding="5dip"  >
 <TextView android:id="@+id/id2_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:layout_marginRight="5dip"
  android:layout_marginTop="5dip"
  android:layout_marginBottom="5dip"
  android:textSize="16sp"
  android:gravity="left|center_vertical"
  android:text="学员ID："  />
 <TextView android:id="@+id/tv_info_id"
  android:layout_width="fill_parent"
  android:layout_height="40dip"
  android:layout_toRightOf="@id/id2_text_id"
  android:layout_alignParentRight="true"
  android:layout_alignTop="@id/id2_text_id"
  android:gravity="left|center_vertical"/>
 <TextView android:id="@+id/name2_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:layout_marginRight="5dip"
  android:layout_marginTop="5dip"
  android:layout_marginBottom="5dip"
  android:layout_below="@id/id2_text_id"
  android:layout_alignLeft="@id/id2_text_id"
  android:textSize="16sp"
  android:gravity="left|center_vertical"
  android:text="姓名："  />
 <TextView android:id="@+id/tv_info_name"
  android:layout_width="fill_parent"
  android:layout_height="40dip"
  android:layout_toRightOf="@id/name2_text_id"
  android:layout_alignParentRight="true"
  android:layout_alignTop="@id/name2_text_id"
  android:gravity="left|center_vertical"  />
 <TextView android:id="@+id/age2_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:gravity="left|center_vertical"
  android:layout_marginRight="5dip"
  android:layout_below="@id/name2_text_id"
  android:layout_marginBottom="5dip"
  android:textSize="16sp"
  android:text="年龄："  />
 <TextView android:id="@+id/tv_info_age"
  android:layout_width="fill_parent"
  android:layout_height="40dip"
  android:layout_toRightOf="@id/age2_text_id"
  android:layout_alignParentRight="true"
  android:layout_alignTop="@id/age2_text_id"
  android:gravity="left|center_vertical"  />
 <TextView android:id="@+id/sex2_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:gravity="left|center_vertical"
  android:layout_below="@id/age2_text_id"
  android:layout_alignLeft="@id/age2_text_id"
  android:layout_marginRight="5dip"
  android:layout_marginBottom="5dip"
  android:text="性别："
  android:textSize="16sp"  />
 <TextView
  android:id="@+id/tv_info_sex"
  android:layout_width="fill_parent"
  android:layout_height="40dip"
  android:layout_toRightOf="@id/sex2_text_id"
  android:layout_alignParentRight="true"
  android:layout_alignTop="@id/sex2_text_id"
  android:gravity="left|center_vertical"   />
 <TextView android:id="@+id/like2_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:gravity="left|center_vertical"
  android:layout_below="@id/sex2_text_id"
  android:layout_alignLeft="@id/sex2_text_id"
  android:layout_marginRight="5dip"
  android:layout_marginBottom="5dip"
  android:text="爱好："
  android:textSize="16sp"  />
 <TextView android:layout_height="40dip"
  android:id="@+id/tv_info_likes"
  android:layout_width="wrap_content"
  android:layout_toRightOf="@id/like2_text_id"
  android:layout_below="@id/sex2_text_id"
  android:layout_marginRight="52dip"
  android:gravity="left|center_vertical"/>
 <TextView android:id="@+id/contact2_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:gravity="center_vertical|left"
  android:layout_marginRight="5dip"
  android:layout_below="@id/like2_text_id"
  android:layout_marginBottom="5dip"
  android:textSize="16sp"
  android:text="联系电话："  />
 <TextView android:id="@+id/tv_info_phone"
  android:layout_width="fill_parent"
  android:layout_height="40dip"
  android:layout_toRightOf="@id/contact2_text_id"
  android:layout_alignParentRight="true"
  android:layout_alignTop="@id/contact2_text_id"
  android:gravity="center_vertical|left"  />
 <TextView android:id="@+id/train2_time_text_id"
  android:layout_width="80dip"
  android:layout_height="40dip"
  android:gravity="center_vertical|left"
  android:layout_marginRight="5dip"
  android:layout_below="@id/contact2_text_id"
  android:layout_marginBottom="5dip"
  android:textSize="16sp"
  android:text="入学日期"  />
 <TextView android:id="@+id/tv_info_train_date"
  android:layout_width="fill_parent"
  android:layout_height="40dip"
  android:layout_toRightOf="@id/train2_time_text_id"
  android:layout_alignParentRight="true"
  android:layout_alignTop="@id/train2_time_text_id"
  android:gravity="center_vertical|left"  />
 <Button android:id="@+id/back_to_list_id"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="返回列表界面"
  android:layout_below="@id/train2_time_text_id"
  android:layout_alignParentLeft="true"
  android:layout_alignParentRight="true"
  android:onClick="goBack">
 </Button>
</RelativeLayout>

添加记录的活动AddStudentActivity

代码如下

java文件：AddStudenActivity

package com.example.asus.student;
import java.io.Serializable;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashSet;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.ContentValues;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
import StudentDBHelper.StudentDBHelper;
import Student.Student;
import TableContanst.TableContanst;
public class AddStudentActivity extends Activity implements OnClickListener {
 private static final String TAG = "AddStudentActivity";
 private final static int DATE_DIALOG = 1;
 private static final int DATE_PICKER_ID = 1;
 private TextView idText;
 private EditText nameText;
 private EditText ageText;
 private EditText phoneText;
 private EditText dataText;
 private RadioGroup group;
 private RadioButton button1;
 private RadioButton button2;
 private CheckBox box1;
 private CheckBox box2;
 private CheckBox box3;
 private Button restoreButton;
 private String sex;
 private Button resetButton;
 private Long student_id;
 private StudentDao dao;
 private boolean isAdd = true;
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.add_student);
  idText = (TextView) findViewById(R.id.tv_stu_id);
  nameText = (EditText) findViewById(R.id.et_name);
  ageText = (EditText) findViewById(R.id.et_age);
  button1 = (RadioButton) findViewById(R.id.rb_sex_female);
  button2 = (RadioButton) findViewById(R.id.rb_sex_male);
  phoneText = (EditText) findViewById(R.id.et_phone);
  dataText = (EditText) findViewById(R.id.et_traindate);
  group = (RadioGroup) findViewById(R.id.rg_sex);
  box1 = (CheckBox) findViewById(R.id.box1);
  box2 = (CheckBox) findViewById(R.id.box2);
  box3 = (CheckBox) findViewById(R.id.box3);
  restoreButton = (Button) findViewById(R.id.btn_save);
  resetButton = (Button) findViewById(R.id.btn_clear);
  dao = new StudentDao(new StudentDBHelper(this)); // 设置监听 78
  restoreButton.setOnClickListener(this);
  resetButton.setOnClickListener(this);
  dataText.setOnClickListener(this);
  checkIsAddStudent();
 }
 // 检查此时Activity是否用于添加学员信息
 private void checkIsAddStudent() {
  Intent intent = getIntent();
  Serializable serial = intent.getSerializableExtra(TableContanst.STUDENT_TABLE);
  if (serial == null) {
   isAdd = true;
   dataText.setText(getCurrentDate());
  } else {
   isAdd = false;
   Student s = (Student) serial;
   showEditUI(s);
  }
 }
 //显示学员信息更新的UI104
 private void showEditUI(Student student) {
  // 先将Student携带的数据还原到student的每一个属性中去
  student_id = student.getId();
  String name = student.getName();
  int age = student.getAge();
  String phone = student.getPhoneNumber();
  String data = student.getTrainDate();
  String like = student.getLike();
  String sex = student.getSex();
  if (sex.toString().equals("男")) {
   button2.setChecked(true);
  } else if (sex.toString().equals("女")) {
   button1.setChecked(true);
  }
  if (like != null && !"".equals(like)) {
   if (box1.getText().toString().indexOf(like) >= 0) {
    box1.setChecked(true);
   }
   if (box2.getText().toString().indexOf(like) >= 0) {
    box2.setChecked(true);
   }
   if (box3.getText().toString().indexOf(like) >= 0) {
    box3.setChecked(true);
   }
  }
  // 还原数据
  idText.setText(student_id + "");
  nameText.setText(name + "");
  ageText.setText(age + "");
  phoneText.setText(phone + "");
  dataText.setText(data + "");
  setTitle("学员信息更新");
  restoreButton.setText("更新");
 }
 public void onClick(View v) {
  // 收集数据
  if (v == restoreButton) {
   if (!checkUIInput()) {// 界面输入验证
    return;
   }
   Student student = getStudentFromUI();
   if (isAdd) {
    long id = dao.addStudent(student);
    dao.closeDB();
    if (id > 0) {
     Toast.makeText(this, "保存成功， ID=" + id,Toast.LENGTH_SHORT).show();
     finish();
    } else {
     Toast.makeText(this, "保存失败，请重新输入！", Toast.LENGTH_SHORT).show();
    }
   } else if (!isAdd) {
    long id = dao.addStudent(student);
    dao.closeDB();
    if (id > 0) {
     Toast.makeText(this, "更新成功",Toast.LENGTH_SHORT).show();
     finish();
    } else {
     Toast.makeText(this, "更新失败，请重新输入！",Toast.LENGTH_SHORT).show();
    }
   }
  } else if (v == resetButton) {
   clearUIData();
  } else if (v == dataText) {
   showDialog(DATE_PICKER_ID);
  }
 }
 //  清空界面的数据176
 private void clearUIData() {
  nameText.setText("");
  ageText.setText("");
  phoneText.setText("");
  dataText.setText("");
  box1.setChecked(false);
  box2.setChecked(false);
  group.clearCheck();
 }
 //  收集界面输入的数据，并将封装成Student对象
 private Student getStudentFromUI() {
  String name = nameText.getText().toString();
  int age = Integer.parseInt(ageText.getText().toString());
  String sex = ((RadioButton) findViewById(group
    .getCheckedRadioButtonId())).getText().toString();
  String likes = "";
  if (box1.isChecked()) { // basketball, football football
   likes += box1.getText();
  }
  if (box2.isChecked()) {
   if (likes.equals("")) {
    likes += box2.getText();
   } else {
    likes += "," + box2.getText();
   }
   if (likes.equals("")) {
    likes += box3.getText();
   } else {
    likes += "," + box3.getText();
   }
  }
  String trainDate = dataText.getText().toString();
  String phoneNumber = phoneText.getText().toString();
  String modifyDateTime = getCurrentDateTime();
  Student s=new Student(name, age, sex, likes, phoneNumber, trainDate,
    modifyDateTime);
  if (!isAdd) {
   s.setId(Integer.parseInt(idText.getText().toString()));
   dao.deleteStudentById(student_id);
  }
  return s;
 }
 //  * 得到当前的日期时间
 private String getCurrentDateTime() {
  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
  return format.format(new Date());
 }
 //  * 得到当前的日期
 private String getCurrentDate() {
  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
  return format.format(new Date());
 }
 //验证用户是否按要求输入了数据
 private boolean checkUIInput() { // name, age, sex
  String name = nameText.getText().toString();
  String age = ageText.getText().toString();
  int id = group.getCheckedRadioButtonId();
  String message = null;
  View invadView = null;
  if (name.trim().length() == 0) {
   message = "请输入姓名！";
   invadView = nameText;
  } else if (age.trim().length() == 0) {
   message = "请输入年龄！";
   invadView = ageText;
  } else if (id == -1) {
   message = "请选择性别！";
  }
  if (message != null) {
   Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
   if (invadView != null)
    invadView.requestFocus();
   return false;
  }   return true;  }
 //时间的监听与事件
 private DatePickerDialog.OnDateSetListener onDateSetListener = new DatePickerDialog.OnDateSetListener()
 {
  @Override
  public void onDateSet(DatePicker view, int year, int monthOfYear,
        int dayOfMonth) {
   dataText.setText(year + "-" + (monthOfYear + 1) + "-" + dayOfMonth);
  }
 };
 @Override
 protected Dialog onCreateDialog(int id) {
  switch (id) {
   case DATE_PICKER_ID:
    return new DatePickerDialog(this, onDateSetListener, 2011, 8, 14);
  }
  return null;
 }
}

布局文件：add_student.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:fillViewport="true"
 android:scrollbarStyle="outsideInset" >
 <RelativeLayout
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:padding="5dip"  >
  <TextView android:id="@+id/tv_stu_text_id"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_marginRight="5dip"
   android:layout_marginTop="5dip"
   android:layout_marginBottom="5dip"
   android:textSize="16sp"
   android:text="学员ID："  />
  <TextView android:id="@+id/tv_stu_id"
   android:layout_width="fill_parent"
   android:layout_height="40dip"
   android:text="未分配ID"
   android:layout_toRightOf="@id/tv_stu_text_id"
   android:layout_alignParentRight="true"
   android:layout_alignTop="@id/tv_stu_text_id"
   android:gravity="center"
   android:background="#ffffff"
   android:textColor="#000000"
   android:textSize="16sp"  />
  <TextView android:id="@+id/tv_name_text"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_marginRight="5dip"
   android:layout_below="@id/tv_stu_text_id"
   android:layout_alignLeft="@id/tv_stu_text_id"
   android:layout_marginBottom="5dip"
   android:textSize="16sp"
   android:text="姓名："  />
  <EditText android:id="@+id/et_name"
   android:layout_width="fill_parent"
   android:layout_height="40dip"
   android:layout_toRightOf="@id/tv_name_text"
   android:layout_alignParentRight="true"
   android:layout_alignTop="@id/tv_name_text"
   android:hint="请输入姓名，如liukenken"
   android:inputType="textPersonName"
   android:paddingLeft="20dip"/>
  <TextView android:id="@+id/tv_age_text"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_marginRight="5dip"
   android:layout_below="@id/tv_name_text"
   android:layout_marginBottom="5dip"
   android:textSize="16sp"
   android:text="年龄："  />
  <EditText android:id="@+id/et_age"
   android:layout_width="fill_parent"
   android:layout_height="40dip"
   android:layout_toRightOf="@id/tv_age_text"
   android:layout_alignParentRight="true"
   android:layout_alignTop="@id/tv_age_text"
   android:hint="请输入年龄"
   android:paddingLeft="20dip"
   android:maxLength="3"
   android:inputType="number"  />
  <TextView android:id="@+id/tv_sex_text"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_below="@id/tv_age_text"
   android:layout_alignLeft="@id/tv_age_text"
   android:layout_marginRight="5dip"
   android:layout_marginBottom="5dip"
   android:text="性别："
   android:textSize="16sp"  />
  <RadioGroup
   android:id="@+id/rg_sex"
   android:layout_width="fill_parent"
   android:layout_height="40dip"
   android:orientation="horizontal"
   android:layout_toRightOf="@id/tv_sex_text"
   android:layout_alignParentRight="true"
   android:layout_alignTop="@id/tv_sex_text"   >
   <RadioButton
    android:id="@+id/rb_sex_male"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:text="男"
    android:textSize="16sp"  />
   <RadioButton android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="女"
    android:id="@+id/rb_sex_female"
    android:layout_weight="1"
    android:textSize="16sp">
   </RadioButton>
  </RadioGroup>
  <TextView android:id="@+id/tv_likes_text"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_below="@id/rg_sex"
   android:layout_alignLeft="@id/tv_sex_text"
   android:layout_marginRight="5dip"
   android:layout_marginBottom="5dip"
   android:text="爱好："
   android:textSize="16sp"  />
  <CheckBox android:id="@+id/box1"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_toRightOf="@id/tv_likes_text"
   android:layout_below="@+id/rg_sex"
   android:text="@string/box1" ></CheckBox>
  <CheckBox android:id="@+id/box2"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_toRightOf="@+id/box1"
   android:layout_below="@+id/rg_sex"
   android:text="@string/box2">

  </CheckBox>
  <CheckBox  android:id="@+id/box3"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_toRightOf="@+id/box2"
   android:layout_below="@+id/rg_sex"
   android:text="@string/box3"  >
  </CheckBox>
  <TextView android:id="@+id/tv_phone_text"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_marginRight="5dip"
   android:layout_below="@id/tv_likes_text"
   android:layout_marginBottom="5dip"
   android:textSize="16sp"
   android:text="联系电话："  />
  <EditText android:id="@+id/et_phone"
   android:layout_width="fill_parent"
   android:layout_height="40dip"
   android:layout_toRightOf="@id/tv_phone_text"
   android:layout_alignParentRight="true"
   android:layout_alignTop="@id/tv_phone_text"
   android:hint="请输入手机号"
   android:paddingLeft="20dip"
   android:inputType="phone"
   android:maxLength="11"  />
  <TextView android:id="@+id/tv_traindate_text"
   android:layout_width="80dip"
   android:layout_height="40dip"
   android:gravity="center_vertical|right"
   android:layout_marginRight="5dip"
   android:layout_below="@id/tv_phone_text"
   android:layout_marginBottom="5dip"
   android:textSize="16sp"
   android:text="入学日期"    />
  <EditText android:id="@+id/et_traindate"
   android:layout_width="fill_parent"
   android:layout_height="40dip"
   android:layout_toRightOf="@id/tv_traindate_text"
   android:layout_alignParentRight="true"
   android:layout_alignTop="@id/tv_traindate_text"
   android:hint="点击选择日期"
   android:inputType="date"
   android:paddingLeft="20dip"
   android:focusable="false"  />
  <Button android:id="@+id/btn_save"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="保存"
   android:layout_below="@id/tv_traindate_text"
   android:layout_alignRight="@id/rg_sex">
  </Button>
  <Button android:id="@+id/btn_clear"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="重置"
   android:layout_below="@id/tv_traindate_text"
   android:layout_toLeftOf="@id/btn_save"
   android:layout_marginRight="10dip">
  </Button>
 </RelativeLayout> </ScrollView>

查找记录的活动StudentSearch。

代码如下

java文件：StudentSearch

package com.example.asus.student;
import StudentDBHelper.StudentDBHelper;
import TableContanst.TableContanst;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
public class StudentSearch extends Activity implements OnClickListener {
 private EditText nameText;
 private Button button;
 private Button reButton;
 private Cursor cursor;
 private SimpleCursorAdapter adapter;
 private ListView listView;
 private StudentDao dao;
 private Button returnButton;
 private LinearLayout layout;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.search);
  nameText = (EditText) findViewById(R.id.et_srarch);
  layout=(LinearLayout) findViewById(R.id.linersearch);
  button = (Button) findViewById(R.id.bn_sure_search);
  reButton = (Button) findViewById(R.id.bn_return);
  listView = (ListView) findViewById(R.id.searchListView);
  returnButton = (Button) findViewById(R.id.return_id);
  dao = new StudentDao(new StudentDBHelper(this));


  reButton.setOnClickListener(this);
  returnButton.setOnClickListener(this);
  button.setOnClickListener(this);
 }

 @Override
 public void onClick(View v) {
  if (v == button) {
   reButton.setVisibility(View.GONE);
   button.setVisibility(View.GONE);
   nameText.setVisibility(View.GONE);
   layout.setVisibility(View.VISIBLE);
   String name = nameText.getText().toString();
   cursor = dao.findStudent(name);
   if (!cursor.moveToFirst()) {
    Toast.makeText(this, "没有所查学员信息！", Toast.LENGTH_SHORT).show();
   } else
    //如果有所查询的信息，则将查询结果显示出来
    adapter = new SimpleCursorAdapter(this, R.layout.find_student_list_item,
    cursor, new String[] { TableContanst.StudentColumns.ID,
      TableContanst.StudentColumns.NAME,
      TableContanst.StudentColumns.AGE,
      TableContanst.StudentColumns.SEX,
      TableContanst.StudentColumns.LIKES,
      TableContanst.StudentColumns.PHONE_NUMBER,
      TableContanst.StudentColumns.TRAIN_DATE },
      new int[] {
        R.id.tv_stu_id,
        R.id.tv_stu_name,
        R.id.tv_stu_age,
        R.id.tv_stu_sex,
        R.id.tv_stu_likes,
        R.id.tv_stu_phone,
        R.id.tv_stu_traindate });
   listView.setAdapter(adapter);
  }else if(v==reButton|v==returnButton){
   finish();
  }
 }
}

布局文件：search.xml和find_studetn_list_item.xml

代码如下

search.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent" >
 <EditText
  android:id="@+id/et_srarch"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:hint="请输入学员姓名"
  android:inputType="textPersonName" />
 <Button
  android:id="@+id/bn_sure_search"
  android:gravity="center"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="确定"   />
 <Button
  android:id="@+id/bn_return"
  android:gravity="center"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="返回"   />
 <LinearLayout
  android:id="@+id/linersearch"
  android:orientation="vertical"
  android:visibility="gone"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content">
  <TextView
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:gravity="center"
   android:text="ID  姓 名  年 龄  性 别  爱 好  电 话  日 期"
   />
  <ListView
   android:id="@+id/searchListView"
   android:layout_weight="1"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:gravity="right"/>
  <Button
   android:id="@+id/return_id"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="返回"  />
 </LinearLayout>
</LinearLayout>

find_student_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="horizontal"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:layout_weight="1"
 >
 <TextView android:id="@+id/tv_stu_id"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
 <TextView android:id="@+id/tv_stu_name"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
 <TextView android:id="@+id/tv_stu_age"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
 <TextView android:id="@+id/tv_stu_sex"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
 <TextView android:id="@+id/tv_stu_likes"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
 <TextView android:id="@+id/tv_stu_phone"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
 <TextView android:id="@+id/tv_stu_traindate"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:layout_weight="1" />
</LinearLayout>

主界面中跳出的上下文菜单ContextMenu的布局文件menu.xml

menu.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_height="40dip"
 android:layout_width="80dip">
 <group android:checkableBehavior="single">
  <item android:id="@+id/delete" android:title="删除学员信息" />
  <item android:id="@+id/look" android:title="详细信息" />
  <item android:id="@+id/write" android:title="修改学员信息" />
 </group>
</menu>

然后是一些自定义类的java文件

StudentDao类

java文件：StudentDao

package com.example.asus.student;
import StudentDBHelper.StudentDBHelper;
import TableContanst.TableContanst;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.view.View;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import Student.Student;
public class StudentDao {
 private StudentDBHelper dbHelper;
 private Cursor cursor;
 public StudentDao(StudentDBHelper dbHelper) {
  this.dbHelper = dbHelper;
 }
 // 添加一个Student对象数据到数据库表
 public long addStudent(Student s) {
  ContentValues values = new ContentValues();
  values.put(TableContanst.StudentColumns.NAME, s.getName());
  values.put(TableContanst.StudentColumns.AGE, s.getAge());
  values.put(TableContanst.StudentColumns.SEX, s.getSex());
  values.put(TableContanst.StudentColumns.LIKES, s.getLike());
  values.put(TableContanst.StudentColumns.PHONE_NUMBER, s.getPhoneNumber());
  values.put(TableContanst.StudentColumns.TRAIN_DATE, s.getTrainDate());
  values.put(TableContanst.StudentColumns.MODIFY_TIME, s.getModifyDateTime());
  return dbHelper.getWritableDatabase().insert(TableContanst.STUDENT_TABLE, null, values);
 }

 // 删除一个id所对应的数据库表student的记录
 public int deleteStudentById(long id) {
  return dbHelper.getWritableDatabase().delete(TableContanst.STUDENT_TABLE,
    TableContanst.StudentColumns.ID + "=?", new String[] { id + "" });
 }

 // 更新一个id所对应数据库表student的记录
 public int updateStudent(Student s) {
  ContentValues values = new ContentValues();
  values.put(TableContanst.StudentColumns.NAME, s.getName());
  values.put(TableContanst.StudentColumns.AGE, s.getAge());
  values.put(TableContanst.StudentColumns.SEX, s.getSex());
  values.put(TableContanst.StudentColumns.LIKES, s.getLike());
  values.put(TableContanst.StudentColumns.PHONE_NUMBER, s.getPhoneNumber());
  values.put(TableContanst.StudentColumns.TRAIN_DATE, s.getTrainDate());
  values.put(TableContanst.StudentColumns.MODIFY_TIME, s.getModifyDateTime());
  return dbHelper.getWritableDatabase().update(TableContanst.STUDENT_TABLE, values,
    TableContanst.StudentColumns.ID + "=?", new String[] { s.getId() + "" });
 }
 // 查询所有的记录
 public List<Map<String,Object>> getAllStudents() {
  //modify_time desc
  List<Map<String, Object>> data = new ArrayList<Map<String,Object>>();
  Cursor cursor = dbHelper.getWritableDatabase().query(TableContanst.STUDENT_TABLE, null, null, null,
    null, null, TableContanst.StudentColumns.MODIFY_TIME+" desc");
  while(cursor.moveToNext()) {
   Map<String, Object> map = new HashMap<String, Object>(8);
   long id = cursor.getInt(cursor.getColumnIndex(TableContanst.StudentColumns.ID));
   map.put(TableContanst.StudentColumns.ID, id);
   String name = cursor.getString(cursor.getColumnIndex(TableContanst.StudentColumns.NAME));
   map.put(TableContanst.StudentColumns.NAME, name);
   int age = cursor.getInt(cursor.getColumnIndex(TableContanst.StudentColumns.AGE));
   map.put(TableContanst.StudentColumns.AGE, age);
   String sex = cursor.getString(cursor.getColumnIndex(TableContanst.StudentColumns.SEX));
   map.put(TableContanst.StudentColumns.SEX, sex);
   String likes = cursor.getString(cursor.getColumnIndex(TableContanst.StudentColumns.LIKES));
   map.put(TableContanst.StudentColumns.LIKES, likes);
   String phone_number = cursor.getString(cursor.getColumnIndex(TableContanst.StudentColumns.PHONE_NUMBER));
   map.put(TableContanst.StudentColumns.PHONE_NUMBER, phone_number);
   String train_date = cursor.getString(cursor.getColumnIndex(TableContanst.StudentColumns.TRAIN_DATE));
   map.put(TableContanst.StudentColumns.TRAIN_DATE, train_date);
   String modify_time = cursor.getString(cursor.getColumnIndex(TableContanst.StudentColumns.MODIFY_TIME));
   map.put(TableContanst.StudentColumns.MODIFY_TIME, modify_time);
   data.add(map);
  }
  return data;
 }
 //模糊查询一条记录
 public Cursor findStudent(String name){
  Cursor cursor = dbHelper.getWritableDatabase().query(TableContanst.STUDENT_TABLE, null, "name like ?",
    new String[] { "%" + name + "%" }, null, null, null,null);
  return cursor;  }
 //按姓名进行排序
 public Cursor sortByName(){
  Cursor cursor = dbHelper.getWritableDatabase().query(TableContanst.STUDENT_TABLE, null,null,
    null, null, null,TableContanst.StudentColumns.NAME);
  return cursor;  }
 //按入学日期进行排序
 public Cursor sortByTrainDate(){
  Cursor cursor = dbHelper.getWritableDatabase().query(TableContanst.STUDENT_TABLE, null,null,
    null, null, null,TableContanst.StudentColumns.TRAIN_DATE);
  return cursor;
 }
 //按学号进行排序
 public Cursor sortByID(){
  Cursor cursor = dbHelper.getWritableDatabase().query(TableContanst.STUDENT_TABLE, null,null,
    null, null, null,TableContanst.StudentColumns.ID);
  return cursor; }
 public void closeDB() {
  dbHelper.close();  } //自定义的方法通过View和Id得到一个student对象
 public Student getStudentFromView(View view, long id) {
  TextView nameView = (TextView) view.findViewById(R.id.tv_stu_name);
  TextView ageView = (TextView) view.findViewById(R.id.tv_stu_age);
  TextView sexView = (TextView) view.findViewById(R.id.tv_stu_sex);
  TextView likeView = (TextView) view.findViewById(R.id.tv_stu_likes);
  TextView phoneView = (TextView) view.findViewById(R.id.tv_stu_phone);
  TextView dataView = (TextView) view.findViewById(R.id.tv_stu_traindate);
  String name = nameView.getText().toString();
  int age = Integer.parseInt(ageView.getText().toString());
  String sex = sexView.getText().toString();
  String like = likeView.getText().toString();
  String phone = phoneView.getText().toString();
  String data = dataView.getText().toString();
  Student student = new Student(id, name, age, sex, like, phone, data,null);
  return
    student;
 }
}

StudentDBHelper类

java文件：StudentDBHelper

package StudentDBHelper;
import TableContanst.TableContanst;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class StudentDBHelper extends SQLiteOpenHelper {
 private static final String TAG = "StudentDBHelper";
 public static final String DB_NAME = "student_manager.db";
 public static final int VERSION = 1; //构造方法
 public StudentDBHelper(Context context, String name, CursorFactory factory, int version)
 {
  super(context, name, factory, version);
 }
 public StudentDBHelper(Context context) {
  this(context, DB_NAME, null, VERSION);  }

 //创建数据库
 @Override
 public void onCreate(SQLiteDatabase db) {
  Log.v(TAG, "onCreate");
  db.execSQL("create table "
    + TableContanst.STUDENT_TABLE     + "(_id Integer primary key AUTOINCREMENT,"
    + "name char,age integer, sex char, likes char, phone_number char,train_date date, "
    + "modify_time DATETIME)");  }
 //更新数据库
 @Override
 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
  Log.v(TAG, "onUpgrade");
 }
}

Student类

java文件：Student

package Student;
import java.io.Serializable;
import android.view.View;
import android.widget.TextView;
public class Student implements Serializable{
 private long id;
 private String name;
 private int age;
 private String sex;
 private String like;
 private String phoneNumber;
 private String trainDate;
 private String modifyDateTime;
 public Student() {
  super();
 }
 public Student(long id, String name, int age, String sex, String like, String phoneNumber,
     String trainDate, String modifyDateTime) {
  super();
  this.id = id;
  this.name = name;
  this.age = age;
  this.sex = sex;
  this.like = like;
  this.phoneNumber = phoneNumber;
  this.trainDate = trainDate;
  this.modifyDateTime = modifyDateTime;
 }
 public Student(String name, int age, String sex, String like, String phoneNumber,
     String trainDate, String modifyDateTime) {
  super();
  this.name = name;
  this.age = age;
  this.sex = sex;
  this.like = like;
  this.phoneNumber = phoneNumber;
  this.trainDate = trainDate;
  this.modifyDateTime = modifyDateTime;
 }
 public long getId() {
  return id;
 }
 public void setId(long id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
 public String getSex() {
  return sex;  }
 public void setSex(String sex) {
  this.sex = sex;
 }
 public String getLike() {
  return like;
 }
 public void setLike(String like) {
  this.like = like;
 }
 public String getPhoneNumber() {
  return phoneNumber;
 }
 public void setPhoneNumber(String phoneNumber) {
  this.phoneNumber = phoneNumber;  }
 public String getTrainDate() {
  return trainDate;
 }
 public void setTrainDate(String trainDate) {
  this.trainDate = trainDate;
 }
 public String getModifyDateTime() {
  return modifyDateTime;
 }
 public void setModifyDateTime(String modifyDateTime) {
  this.modifyDateTime = modifyDateTime;
 }
}

TableContanst类

java文件：TableContanst

package TableContanst;

public final class TableContanst {
 public static final String STUDENT_TABLE = "student";
 public static final class StudentColumns {
  public static final String ID = "_id";
  public static final String NAME = "name";
  public static final String AGE = "age";
  public static final String SEX = "sex";
  public static final String LIKES = "likes";
  public static final String PHONE_NUMBER = "phone_number";
  public static final String TRAIN_DATE = "train_date";
  public static final String MODIFY_TIME = "modify_time";
 }
}

其他文件

color.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <color name="colorPrimary">#3F51B5</color>
 <color name="colorPrimaryDark">#303F9F</color>
 <color name="colorAccent">#EE82EE</color>
</resources>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

 <string name="hello">Hello World, TextStudentManager!</string>
 <string name="app_name">学员管理系统</string>
 <string name="information_write">学员信息修改</string>
 <string name="button1">男</string>
 <string name="button2">女</string>
 <string name="box1">唱歌</string>
 <string name="box2">跳舞</string>
 <string name="box3">健身</string>
 <string name="myButton">添加学员信息</string>
 <string name="spinner">请选择</string>
</resources>

styles.xml

<resources>

 <!-- Base application theme. -->
 <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  <!-- Customize your theme here. -->
  <item name="colorPrimary">@color/colorPrimary</item>
  <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
  <item name="colorAccent">@color/colorAccent</item>
 </style>

</resources>

AndroidManifest.xml

再次提醒，所有自定义活动必须手动添加到这个文件中，包括设置主活动也是在此文件中

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.asus.student">

 <application
  android:allowBackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
  android:roundIcon="@mipmap/ic_launcher_round"
  android:supportsRtl="true"
  android:theme="@style/AppTheme">
  <activity android:name=".StudentListActivity">
   <intent-filter>
    <action android:name="android.intent.action.MAIN" />

    <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
  </activity>
  <activity android:name=".AddStudentActivity">
  </activity>
  <activity android:name=".ShowStudentActivity">
  </activity>
  <activity android:name=".StudentSearch">
  </activity>
 </application>

</manifest>

最后是效果图片

初始界面

直接可用的Android studio学生信息管理系统