体温上报APP１.１

1、学习进度表：

2、任务：

完成第一阶段

3、预计时间：

２天

4、今日完成情况：

１、汇总情况：

• 登录页面ＭａｉｎＡｃｔｉｖｉｔｙ　　设置了记住密码功能

package com.example.reporttemperature;

import androidx.appcompat.app.AppCompatActivity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.content.SharedPreferences;
import android.text.method.PasswordTransformationMethod;
import android.view.*;
import android.widget.Button;
import android.content.*;
import android.widget.CheckBox;
import android.widget.*;

public class MainActivity extends AppCompatActivity {

    private EditText ed_id,ed_password,e_id,e_pwd,et_id,et_password;
    private Button button_login,button_register;
    private CheckBox button_rem;
    private MyOpenHelper helper=new MyOpenHelper(this);
    private SharedPreferences mSpSettings=null;//声明一个sharedPreferences用于保存数据
    private static final String PREPS_NAME="NamePwd";
    private boolean flag,flag2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        setTitle("登录界面");
        findById();//获取控件
        setListener();//绑定事件
        getData();

        //隐藏密码
        ed_password.setTransformationMethod(PasswordTransformationMethod.getInstance());


    }
   //绑定事件
    private void setListener(){
        //注册
        button_register.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //跳转到注册页面
                Intent intent = new Intent(MainActivity.this, RegisterActivity.class);
                startActivity(intent);
                finish();
            }
        });

        //登录
        button_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String str1=ed_id.getText().toString();
                String str2=ed_password.getText().toString();
                flag=compare(str1,str2);
                if(flag){
                    //密码账号比对成功
                    button_rem=findViewById(R.id.checkBox_auto);
                    //判断复选框是否选中——记住密码
                    if(button_rem.isChecked()){
                        mSpSettings=getSharedPreferences(PREPS_NAME,MODE_PRIVATE);
                        SharedPreferences.Editor edit=mSpSettings.edit();//得到Editor对象
                        edit.putBoolean("isKeep",true);//记录保存标记
                        edit.putString("username",ed_id.getText().toString());//记录用户ID
                        edit.putString("password",ed_password.getText().toString());//记录用户密码
                        edit.commit();//提交
                    }else{
                        mSpSettings=getSharedPreferences(PREPS_NAME,MODE_PRIVATE);
                        SharedPreferences.Editor edit=mSpSettings.edit() ;
                        edit.putBoolean("isKeep",true);//记录保存标记
                        edit.putString("username","");
                        edit.putString("password","");
                        edit.commit();//提交

                    }
                    //登录成功跳转页面
                    Toast.makeText(MainActivity.this,"登陆成功",Toast.LENGTH_LONG).show();

                    Intent intent = new Intent(MainActivity.this, CatalogActivity.class);
                    intent.putExtra("IDnumber",ed_id.getText().toString());
                    //finish();
                    startActivity(intent);

                }else{
                    //登陆失败
                    Toast.makeText(MainActivity.this, "密码或者用户名错误", Toast.LENGTH_SHORT).show();

                }
            }
        });

    }

        //登录时比对信息
        public boolean compare(String id,String password){
            flag2=false;
            SQLiteDatabase db=helper.getReadableDatabase();
            Cursor cursor=db.rawQuery("select * from user",null);
            while(cursor.moveToNext()){
                String id_number=cursor.getString(cursor.getColumnIndex("idNumber"));
                String password_user=cursor.getString(cursor.getColumnIndex("password"));

                if(id.equals(id_number)&&password.equals(password_user)) {
                    flag2 = true;
                    break;
                }
            }
        return flag2;
        }

  @Override
    protected void onResume() {
        super.onResume();
        getData();//在界面显示数据之前得到之前存储的数据
    }
   private void getData() {
        mSpSettings=getSharedPreferences(PREPS_NAME, MODE_PRIVATE);
        if(mSpSettings.getBoolean("isKeep", false)){
            //如果之前存储过,则显示在相应文本框内
            ed_id.setText(mSpSettings.getString("username", ""));
            ed_password .setText(mSpSettings.getString("password", ""));
        }else{//否则显示为空
            ed_id.setText("");
            ed_password.setText("");
        }
    }
    private void findById(){
        ed_id=findViewById(R.id.input_ID);
        ed_password=findViewById(R.id.input_password);
        button_login=findViewById(R.id.button_login);
        button_register=findViewById(R.id.button_register);

    }

}

• ａｃｔｉｖｉｔｙ＿ｍａｉｎ．ｘｍｌ

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:background="@drawable/main_activity"
    tools:context=".MainActivity">


    <Button
        android:id="@+id/button_login"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginStart="94dp"
        android:layout_marginLeft="94dp"
        android:layout_marginTop="40dp"
        android:layout_marginEnd="57dp"
        android:layout_marginRight="57dp"
        android:layout_marginBottom="165dp"
        android:paddingLeft="16dp"
        android:paddingRight="16dp"
        android:text="登录"
        android:textSize="25dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/button_register"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/checkBox_auto" />

    <Button
        android:id="@+id/button_register"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"

        android:layout_marginTop="183dp"
        android:layout_marginEnd="84dp"
        android:layout_marginRight="84dp"
        android:layout_marginBottom="129dp"
        android:paddingLeft="16dp"
        android:paddingRight="16dp"
        android:text="注册"
        android:textSize="25dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/input_password">

    </Button>

    <TextView
        android:id="@+id/textView_ID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="25dp"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="136dp"
        android:layout_marginEnd="29dp"
        android:layout_marginRight="29dp"
        android:text="账号"
        android:textSize="24dp"
        app:layout_constraintEnd_toStartOf="@+id/input_ID"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/input_ID"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="179dp"
        android:layout_marginEnd="59dp"
        android:layout_marginRight="59dp"
        android:layout_marginBottom="69dp"
        android:hint="请输入学号"
        android:maxLines="1"
        android:textSize="28dp"
        app:layout_constraintBottom_toTopOf="@+id/input_password"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView_ID"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView_password"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="25dp"
        android:layout_marginLeft="25dp"
        android:layout_marginEnd="29dp"
        android:layout_marginRight="29dp"
        android:layout_marginBottom="8dp"
        android:text="密码"
        android:textSize="24dp"
        app:layout_constraintBottom_toBottomOf="@+id/input_password"
        app:layout_constraintEnd_toStartOf="@+id/input_password"
        app:layout_constraintStart_toStartOf="parent" />

    <EditText
        android:id="@+id/input_password"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="69dp"
        android:layout_marginEnd="58dp"
        android:layout_marginRight="58dp"
        android:hint="请输入密码"
        android:maxLines="1"
        android:textSize="28dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView_password"
        app:layout_constraintTop_toBottomOf="@+id/input_ID" />

    <CheckBox
        android:id="@+id/checkBox_auto"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="34dp"
        android:layout_marginEnd="181dp"
        android:layout_marginRight="181dp"
        android:layout_marginBottom="117dp"
        android:text="记住密码"
        android:textSize="24dp"
        app:layout_constraintBottom_toTopOf="@+id/button_login"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/input_password"
        app:layout_constraintTop_toBottomOf="@+id/input_password" />


</androidx.constraintlayout.widget.ConstraintLayout>