A班B班条件查询

XML：

</LinearLayout>

XML2

<?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="com.example.hasee.suibian.Main2Activity">

<LinearLayout
android:background="@color/colorAccent"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:textSize="30sp"
android:gravity="center"
android:text="ID"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:textSize="30sp"
android:gravity="center"
android:text="名字"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:textSize="30sp"
android:gravity="center"
android:text="性别"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:textSize="30sp"
android:gravity="center"
android:text="班级"
android:layout_width="100dp"
android:layout_height="wrap_content" />
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/mRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

</LinearLayout>

item:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
>

<TextView
android:textSize="20sp"
android:gravity="center"
android:id="@+id/md"
android:text="w"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:textSize="20sp"
android:gravity="center"
android:text="w"
android:id="@+id/mName"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:textSize="20sp"
android:gravity="center"
android:text="w"
android:id="@+id/mSex"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:textSize="20sp"
android:gravity="center"
android:text="w"
android:id="@+id/mClasses"
android:layout_width="100dp"
android:layout_height="wrap_content" />

</LinearLayout>

MainJava：

package com.example.hasee.suibian;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

import dao.DaoMaster;
import dao.DaoSession;
import dao.UserDao;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private EditText mZhanghao;
private EditText mMima;
private Button mDenglu;
private ArrayList<User>mList=new ArrayList<>();
private UserDao userDao;
private User user1;
private User user2;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DaoSession daoSession = DaoMaster.newDevSession(this, UserDao.TABLENAME);
userDao = daoSession.getUserDao();
initView();
initData();
}

private void initData() {
List<User> users = userDao.loadAll();
if (users.isEmpty()){
for (int i = 0; i < 20; i++) {
if (i%2==0){
user1 = new User(null,"曹大风","男","18","H1710A");
userDao.insert(user1);
}else {
user2 = new User(null, "孟小帅" ,"女","18","H1710B");
userDao.insert(user2);
}
}

}

}

Main2

package com.example.hasee.suibian;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

import java.util.ArrayList;
import java.util.List;

import dao.DaoMaster;
import dao.DaoSession;
import dao.UserDao;

public class Main2Activity extends AppCompatActivity {

private RecyclerView mRecyclerView;
private ArrayList<User>mList=new ArrayList<>();
private UserDao userDao;
private MyRecycleApader myRecycleApader;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
DaoSession daoSession = DaoMaster.newDevSession(this, UserDao.TABLENAME);
userDao = daoSession.getUserDao();
initView();

Intent intent = getIntent();
String zhanghao = intent.getStringExtra("zhanghao");
String mima = intent.getStringExtra("mima");

if (zhanghao.equals("15733644796")&&mima.equals("AAAAAA")){
//这个参数就是指定某一数据进行查找
//它返回的是一个User型的数据
// 通过where关键字判断Classes为H1710A来查找到班级的信息
// eq方法为具体查找
List<User> list = userDao.queryBuilder().where(UserDao.Properties.Classes.eq("H1710A")).list();
mList.addAll(list);
}

if (zhanghao.equals("15733644796")&&mima.equals("BBBBBB")){
List<User> list2 = userDao.queryBuilder().where(UserDao.Properties.Classes.eq("H1710B")).list();
mList.addAll(list2);
}

LinearLayoutManager manager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(manager);

myRecycleApader=new MyRecycleApader(mList,this);
mRecyclerView.setAdapter(myRecycleApader);

}

private void initView() {
mRecyclerView = (RecyclerView) findViewById(R.id.mRecyclerView);
}
}

private void initView() {
mZhanghao = (EditText) findViewById(R.id.mZhanghao);
mMima = (EditText) findViewById(R.id.mMima);
mDenglu = (Button) findViewById(R.id.mDenglu);

mDenglu.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.mDenglu:
submit();
break;
}
}

private void submit() {
// validate
String mZhanghaoString = mZhanghao.getText().toString().trim();
if (TextUtils.isEmpty(mZhanghaoString)) {
Toast.makeText(this, "输入账号", Toast.LENGTH_SHORT).show();
return;
}

String mMimaString = mMima.getText().toString().trim();
if (TextUtils.isEmpty(mMimaString)) {
Toast.makeText(this, "输入密码", Toast.LENGTH_SHORT).show();
return;
}

String string1="[1][3,5][2,5,7][0-9]{8}";
String string2="[a-zA-Z0-9]{6,16}";

if (mZhanghaoString.matches(string1)&&mMimaString.matches(string2)){
Toast.makeText(this, "ok", Toast.LENGTH_SHORT).show();
if (mZhanghaoString.equals("15733644796")&&mMimaString.equals("AAAAAA")
||mZhanghaoString.equals("15733644796")&&mMimaString.equals("BBBBBB")
){
Intent intent = new Intent(MainActivity.this,Main2Activity.class);
intent.putExtra("zhanghao",mZhanghaoString);
intent.putExtra("mima",mMimaString);
startActivity(intent);
}
}

// TODO validate success, do something

}

}

Adapter

package com.example.hasee.suibian;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;

/**
* Created by hasee on 2018/5/10.
*/

public class MyRecycleApader extends RecyclerView.Adapter<MyRecycleApader.ViewHolder> {
private ArrayList<User> mList;
private Context context;

public MyRecycleApader(ArrayList<User> mList, Context context) {
this.mList = mList;
this.context = context;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View inflate = LayoutInflater.from(context).inflate(R.layout.item, null);
ViewHolder holder=new ViewHolder(inflate);
return holder;
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.md.setText(mList.get(position).getId().toString());
holder.mName.setText(mList.get(position).getName());
holder.mSex.setText(mList.get(position).getSex());
holder.mClasses.setText(mList.get(position).getClasses());

}

@Override
public int getItemCount() {
return mList.size();
}

public static class ViewHolder extends RecyclerView.ViewHolder{
public View rootView;
public TextView md;
public TextView mName;
public TextView mSex;
public TextView mClasses;

public ViewHolder(View rootView) {
super(rootView);
this.rootView = rootView;
this.md = (TextView) rootView.findViewById(R.id.md);
this.mName = (TextView) rootView.findViewById(R.id.mName);
this.mSex = (TextView) rootView.findViewById(R.id.mSex);
this.mClasses = (TextView) rootView.findViewById(R.id.mClasses);
}

}

}

实体Bean数据库

package com.example.hasee.suibian;

import org.greenrobot.greendao.annotation.Entity;
import org.greenrobot.greendao.annotation.Id;
import org.greenrobot.greendao.annotation.NotNull;
import org.greenrobot.greendao.annotation.Property;
import org.greenrobot.greendao.annotation.Generated;

/**
* Created by hasee on 2018/5/10.
*/

@Entity
public class User {
@Id(autoincrement = true)
private Long id;
@NotNull
@Property(nameInDb = "name")
private String name;
private String sex;
private String age;
private String classes;
@Generated(hash = 1918781597)
public User(Long id, @NotNull String name, String sex, String age,
String classes) {
this.id = id;
this.name = name;
this.sex = sex;
this.age = age;
this.classes = classes;
}
@Generated(hash = 586692638)
public User() {
}
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return this.sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAge() {
return this.age;
}
public void setAge(String age) {
this.age = age;
}
public String getClasses() {
return this.classes;
}
public void setClasses(String classes) {
this.classes = classes;
}

@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", sex='" + sex + '\'' +
", age='" + age + '\'' +
", classes='" + classes + '\'' +
'}';
}
}

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