学生类

package com.example.test;import android.widget.RadioButton;import java.io.Serializable;/*** Created by TBM on 2021/3/14*/
public class Student implements Serializable {private String name;private String age;private String major;private String sex;private String xy;private String time;private String[] course;Student(String name, String age,String sex,String major,String xy,String time,String[] course){this.name = name;this.major =major;this.age = age;this.sex = sex;this.xy = xy;this.time = time;this.course = course;}public String getName(){return name;}public void setName(String name){this.name = name;}public String getMajor(){return major;}public void setMajor(String major){this.major = major;}public String getAge(){return age;}public void setAge(String age){this.age = age;}public String getSex(){return sex;}public void setSex(String sex){this.sex = sex;}public String getXy(){return xy;}public void setXy(String xy){this.xy = xy;}public String getTime() {return time;}public String[] getCourse() {return course;}public void setCourse(String[] course) {this.course = course;}
}

使用ListView显示学生信息

主界面布局.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="学生列表"android:textSize="24sp"android:layout_gravity="center"android:textColor="@color/black"/><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center"android:layout_marginLeft="150dp"android:id="@+id/btn_add"android:text="添加学生" /></LinearLayout><ListViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/studentList"android:layout_marginTop="15dp" /></LinearLayout>

学生信息显示ListView格式.xml文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"android:layout_height="match_parent"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:orientation="vertical"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="李四"android:id="@+id/name"android:textSize="25sp"android:gravity="center"/><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/major"android:layout_below="@id/name"android:textSize="20sp"android:text="计算机科学与技术"android:layout_marginTop="10dp"android:gravity="center"/></LinearLayout><ImageViewandroid:layout_width="50dp"android:layout_height="50dp"android:id="@+id/delete"android:layout_alignParentRight="true"android:src="@drawable/delete"android:clickable="true"android:layout_centerInParent="true"/><ImageViewandroid:layout_width="50dp"android:layout_height="50dp"android:id="@+id/edit"android:layout_toLeftOf="@id/delete"android:layout_marginRight="5dp"android:layout_centerInParent="true"android:src="@drawable/edit"android:clickable="true"/>
</RelativeLayout>

学生信息显示.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="信息录入"android:textSize="24sp"android:layout_gravity="center"android:textColor="@color/black"/><EditTextandroid:layout_width="match_parent"android:layout_height="wrap_content"android:hint="姓名："android:id="@+id/ed_name"android:inputType="text"/><EditTextandroid:layout_width="match_parent"android:layout_height="wrap_content"android:hint="年龄："android:id="@+id/ed_age"android:inputType="number"/><RadioGroupandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:id="@+id/sexselect"><RadioButtonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="男"android:id="@+id/manRb"android:layout_weight="1"/><RadioButtonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="女"android:id="@+id/womanRb"android:layout_weight="1"/></RadioGroup><Spinnerandroid:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/spinner" /><AutoCompleteTextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/ed_major"android:inputType="text"android:hint="专业："/><EditTextandroid:layout_width="match_parent"android:layout_height="wrap_content"android:hint="入学时间"android:id="@+id/datetime"/><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="课程选择"android:textSize="24sp"/><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/check_pro"android:orientation="vertical"><CheckBoxandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="数据库原理"/><CheckBoxandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="计算机原理"/><CheckBoxandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Android开发"/><CheckBoxandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="人工智能"/></LinearLayout><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center"android:text="提交"android:textColor="@color/black"android:background="#9C9C99"android:textSize="24sp"android:layout_marginTop="20dp"android:id="@+id/submit"/></LinearLayout>

Adapter连接LIstView

package com.example.test;import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Parcelable;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;import java.util.List;/*** Created by TBM on 2021/3/14*/
public class StuAdapter extends BaseAdapter implements View.OnClickListener {private List stuDates;private Context stuContext;StuAdapter(Context context,List datas){this.stuContext=context;this.stuDates=datas;}@Overridepublic int getCount() {return stuDates.size();}@Overridepublic Object getItem(int position) {return stuDates.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View stuView = View.inflate(stuContext,R.layout.stu_layout,null);TextView tv_name = stuView.findViewById(R.id.name);TextView tv_major = stuView.findViewById(R.id.major);ImageView iv_edit = stuView.findViewById(R.id.edit);ImageView iv_delete = stuView.findViewById(R.id.delete);Student s= (Student) getItem(position);tv_name.setText(s.getName());tv_major.setText(s.getMajor());// 给adpter内部的控件增加一个监听iv_edit.setOnClickListener(this);iv_delete.setOnClickListener(this);//给删除和编辑的imageView设置一个标志，用item的位置position来定位，类似一个id,通过tag可以获得//list的itemiv_delete.setTag(position);iv_edit.setTag(position);return stuView;}@Overridepublic void onClick(View v) {final int position= (int) v.getTag();Student s= (Student) stuDates.get(position);switch (v.getId()){case R.id.edit:Intent intent=new Intent();intent.setClass(stuContext,StuInfoActivity.class);intent.putExtra("student", s);intent.putExtra("position",position);intent.putExtra("type","editOper");((Activity)stuContext).startActivityForResult(intent,MainActivity.EDITCODE);/*((Activity)stuContext).setResult(MainActivity.EDITCODE,intent);*/Toast.makeText(stuContext,s.getName()+":编辑"+position,Toast.LENGTH_LONG).show();break;case R.id.delete:AlertDialog.Builder myDialog=new AlertDialog.Builder(stuContext);myDialog.setTitle("提示");myDialog.setIcon(R.mipmap.ic_launcher);myDialog.setMessage("确定删除"+s.getName()+"?");myDialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {stuDates.remove(position);//删除集合StuAdapter.this.notifyDataSetChanged();//适配器更新数据Toast.makeText(stuContext,s.getName()+":删除！",Toast.LENGTH_LONG).show();}});myDialog.setNegativeButton("取消",null);myDialog.show();break;}}
}

主界面.java

package com.example.test;import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;import java.util.ArrayList;
import java.util.List;public class MainActivity extends AppCompatActivity {private ListView studentList;private List<Student> students = new ArrayList<>();private Button add;private StuAdapter stuAdapter;static int ADDCODE=100;static int EDITCODE=200;private String c[] = {};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);studentList = (ListView) findViewById(R.id.studentList);add = findViewById(R.id.btn_add);Student s1 = new Student("李四","21","男","电子信息","信息科学与工程学院","2018-9-1",c);Student s2 = new Student("王五", "24","男","物联网工程","土木学院","2017-9-1",c);Student s3 = new Student("张三", "23","女","计算机科学与技术","河海学院","2016-9-1",c);students.add(s1);students.add(s2);students.add(s3);stuAdapter =new StuAdapter(MainActivity.this,students);studentList.setAdapter(stuAdapter);studentList.setOnItemClickListener(new AdapterView.OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position, long id) {ListView listView = (ListView) parent;Student s = (Student) listView.getItemAtPosition(position);Toast.makeText(MainActivity.this, s.getName() + "查看", Toast.LENGTH_SHORT).show();}});add.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent();intent.setClass(MainActivity.this, StuInfoActivity.class);/*      intent.putExtra("type", "add");*/startActivityForResult(intent, ADDCODE);}});}@Override//设置监听protected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (data == null) return;Bundle bundle = data.getExtras();Student student = (Student) bundle.get("students");/*ArrayList<Student> s = (ArrayList<Student>) bundle.get("students");String n = null,m = null;for (Student student:s){n = student.getName();m = student.getMajor();}Student student = new Student(n,m);*/if (requestCode == ADDCODE) {students.add(student);stuAdapter.notifyDataSetChanged();} else if (requestCode== EDITCODE) {int k = bundle.getInt("position");students.set(k, student);stuAdapter.notifyDataSetChanged();}}}

学生信息类.java

package com.example.test;import androidx.appcompat.app.AppCompatActivity;import android.app.DatePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.Toast;import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;public class StuInfoActivity extends AppCompatActivity {private AutoCompleteTextView major;private Spinner spinner;private EditText time;private Calendar cal;private int year,month,day;private Button submit;private EditText ed_name;private EditText ed_age;private RadioGroup sexselect;private RadioButton manRb;private RadioButton womanRb;private LinearLayout linearLayout;private List<String> majors = new ArrayList<String>();private ArrayAdapter<String> adapter;private ArrayList<Student> students1 = new ArrayList<>();private String majordata;private String sexdate;private String xy;private String course[];private int position;private int xyposition;private int i;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_stu_info);major = findViewById(R.id.ed_major);time = findViewById(R.id.datetime);submit = findViewById(R.id.submit);sexselect = findViewById(R.id.sexselect);manRb = findViewById(R.id.manRb);womanRb = findViewById(R.id.womanRb);linearLayout= findViewById(R.id.check_pro);majors.add("计算机科学与技术");majors.add("计算机应用");adapter = new ArrayAdapter<String>(this, R.layout.textview, majors);major.setAdapter(adapter);spinner = findViewById(R.id.spinner);ed_name = findViewById(R.id.ed_name);ed_age = findViewById(R.id.ed_age);initlSpinner();Bundle bundle = this.getIntent().getExtras();if (bundle != null){Student student = (Student) bundle.get("student");position = (int) bundle.get("position");String names = student.getName();String majors = student.getMajor();String ages = student.getAge();String sexs = student.getSex();String xys = student.getXy();String times = student.getTime();String courses[] = student.getCourse();checkshow(linearLayout,courses);xy = xys;xyposition=setspinnerinfo(xy);ed_name.setText(names);major.setText(majors);ed_age.setText(ages);time.setText(times);spinner.setSelection(xyposition,true);if (sexs.equals("男")){manRb.setChecked(true);}else if (sexs.equals("女")){womanRb.setChecked(true);}}submit.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {String name =ed_name.getText().toString();String age = ed_age.getText().toString();String times = time.getText().toString();course=getCheckBoxInfo(linearLayout);sexdate = getRadioInfo(sexselect);majordata = major.getText().toString();if (name==null||name.length()==0){ed_name.setError("不能为空！");Toast.makeText(StuInfoActivity.this,"请输入姓名",Toast.LENGTH_LONG).show();return;}else if (juagenum(name)){ed_name.setError("名字不能含有数字！");Toast.makeText(StuInfoActivity.this,"姓名不能包含数字",Toast.LENGTH_LONG).show();return;}else if (age==null||age.length()==0){ed_age.setError("不能为空！");Toast.makeText(StuInfoActivity.this,"请输入年龄",Toast.LENGTH_LONG).show();return;}Student student = new Student(name,age,sexdate,majordata,xy,times,course);students1.add(student);Intent intent = new Intent();intent.setClass(StuInfoActivity.this,MainActivity.class);intent.putExtra("students",student);intent.putExtra("position",position);setResult(MainActivity.ADDCODE,intent);finish();}});spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {@Overridepublic void onItemSelected(AdapterView<?> parent, View view, int position, long id) {xy = parent.getItemAtPosition(position).toString();}@Overridepublic void onNothingSelected(AdapterView<?> parent) {}});time.setKeyListener(null);time.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {DatePickerDialog.OnDateSetListener listener = new DatePickerDialog.OnDateSetListener() {@Overridepublic void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {time.setText(year + "-" + month + "-" + dayOfMonth);}};getDate();DatePickerDialog datePickerDialog = new DatePickerDialog(StuInfoActivity.this, listener, year, month, day);datePickerDialog.show();}});}@Overrideprotected void onActivityResult(int requestCode,int resultCode,Intent data) {super.onActivityResult(requestCode, resultCode, data);if (data == null) return;Bundle bundle = data.getExtras();Student student = (Student) bundle.get("student");if (requestCode == MainActivity.EDITCODE ){/*    int position = (int) bundle.get("position");*/String names = student.getName();String majors = student.getMajor();ed_name.setText(names);major.setText(majors);}}private void getDate() {cal=Calendar.getInstance();year=cal.get(Calendar.YEAR);month=cal.get(Calendar.MONTH);day=cal.get(Calendar.DAY_OF_MONTH);}private void initlSpinner(){String[] arr= getResources().getStringArray(R.array.xyinfo);ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item,arr );spinner.setAdapter(arrayAdapter);}private boolean isDigtal(String num){return num.matches("[0-9]{1,}");}private boolean juagenum(String num){int len = num.length();for (int i=0;i<len;i++){if (Character.isDigit(num.charAt(i))){return true;}}return false;}private String getRadioInfo(RadioGroup radioGroup){String info = "";int num = radioGroup.getChildCount();for (int i=0;i<num;i++){RadioButton rd = (RadioButton) radioGroup.getChildAt(i);if (rd.isChecked()){info=rd.getText().toString();break;}}return info;}private int setspinnerinfo(String xy){int j;int i = getResources().getStringArray(R.array.xyinfo).length;String s[] = getResources().getStringArray(R.array.xyinfo);for ( j=0;j<i;j++){if (xy.equals(s[j])){break;}}return j;}private String[] getCheckBoxInfo(LinearLayout checkbox){int num = checkbox.getChildCount();String course[] = new String[num];int j = 0;for (int i=0;i<num;i++){CheckBox cb = (CheckBox) checkbox.getChildAt(i);if (cb.isChecked()){course[j]=cb.getText().toString();j++;}}return course;}public void checkshow(LinearLayout linearLayout,String[] courses){if ( courses != null){int num = linearLayout.getChildCount();for (int i=0;i<num;i++){CheckBox checkBox = (CheckBox) linearLayout.getChildAt(i);checkBox.setChecked(false);for (String c:courses){if (checkBox.getText().toString().equals(c)){checkBox.setChecked(true);break;}}}}}}

包含输入框校验等。

以上内容使用到了AutoCompleTextView，Spinner下拉框，日期挂件、还有点选、复选框的值获取转换等。

效果演示

android——学生信息显示和添加相关推荐

android学生个人事物管理系统,基于Android平台的学生个人事务管理系统的设计与实现（整理版）.doc...
DSJKFHJKDH FJDHJKFH KDSJH JKDHF JKDS HKJ HGFDSJHF JHFJK HFKSD JKFJDSKJF DSJF;DS 摘要 Android智能手机越来越普及 ...
腾讯互动白板+即时通讯+实时音视频，Android学生端接入
腾讯互动白板+即时通讯+实时音视频,Android学生端接入一.简介线上教学方案:腾讯云互动白板(Tencent Interactive Whiteboard,TIW)+即时通信(Instant ...
用JDBC写一个学生管理系统（添加、删除、修改、查询学生信息）（二）
本文上接用JDBC写一个学生管理系统(添加.删除.修改.查询学生信息) 这次主要是对上一文中的查询方法做一下调整,用创建内部类的方法来实现学生信息的查询. 我们先要定义一个接口IRowMapper: ...
Android 图片合成：添加蒙板效果不规则相框透明度渐变效果的实现
Android 图片合成:添加蒙板效果不规则相框透明度渐变效果的实现暂时还未有时间开发这效果,所以先贴出来. 先贴一张效果图,这是一张手机截屏: 左上方的风景图:背景图片右上方的人物图:前景图 ...
android viewpager动态加载页面,Android viewpager中动态添加view并实现伪无限循环的方法...
本文实例讲述了Android viewpager中动态添加view并实现伪无限循环的方法.分享给大家供大家参考,具体如下: viewpager的使用,大家都熟悉,它可以实现页面之间左右滑动的切换,这里 ...
从零开始学Xamarin.Forms(四) Android 准备步骤（添加第三方Xamarin.Forms.Labs库）
从零开始学Xamarin.Forms(四) Android 准备步骤(添加第三方Xamarin.Forms.Labs库) 原文:从零开始学Xamarin.Forms(四) Android 准备步骤(添 ...
android textView 替文字添加下划线删除线
android textView 替文字添加下划线删除线方法1: tv=(TextView)findViewById(R.id.tv); tv.getPaint().setFlags(Paint. ...
android学生成绩查询代码,android学生成绩查询系统.pdf
android学生成绩查询系统嵌入式系统课程设计报告学生成绩查询系统手机端 I 摘要在世纪的今天,互联网已深入世界的各个角落.而WAP技术的发展和无线业务的成 21 熟,为人们获取各种信息提供 ...
Android 9 导航栏添加截图按钮
Android 9 导航栏添加截图按钮功能:Android 系统底部导航栏(HOME\BACK)位置添加截图按钮,系统设置界面添加截图开关主要修改工程有SystemUI 和 Settings 注意 ...

android——学生信息显示和添加

android——学生信息显示和添加

学生类

使用ListView显示学生信息

效果演示

android——学生信息显示和添加相关推荐

最新文章

热门文章