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
增
添加界面
添加界面中的日历插件
添加后返回主界面
第一次打开的程序,ID是从1开始的,因为我之前有操作过,所以这里ID才不是从1开始的。
单击记录后显示详细信息
长按记录后跳出上下文菜单
删
点击菜单中的删除按钮
删除后
下面看看多条记录的操作
点击主界面的选择按钮
点击全选按钮
全选后删除
改
点击菜单中的修改按钮
查
搜索
搜索结果
以上就是关于我自己修改过的简易学生信息管理系统的全部说明,按照步骤来一步一步做,应该就能直接运。如果有问题的话,顶多就是改一下包的名字和gradle文件中版本号之类的一些简单的问题,具体需要结合电脑的实际情况来修改即可。
欢迎指正。
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