九、食堂管理之菜品评价

本界面主要功能：

为菜品添加评论并进行评分

Activity：AddCommentPage

package com.example.fanpeng.smartcanteen;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RatingBar;
import android.widget.Toast;

import org.litepal.LitePal;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class AddCommentPage extends AppCompatActivity {
    private Button btn1,btn2;
    private EditText addText;
    private RatingBar gradeStar;
    private  User user=new User();
    private  Dishes dishes=new Dishes();
    private static String TAG="MyCheck";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_comment_page);
        Intent intent=getIntent();
        Bundle bundle=intent.getExtras();

        dishes=(Dishes)bundle.getSerializable("dishes1");
        Log.d(TAG,dishes.getName()+"2");//---------------
        user=(User)bundle.getSerializable("user1");
        /
        addText=findViewById(R.id.add_text);
        gradeStar=findViewById(R.id.grade_star);
        btn1=findViewById(R.id.add_btn);
        btn2=findViewById(R.id.cancel_btn);
        //
        btn1.setOnClickListener(new addCommentListener(user,dishes));
        btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                addText.setText("");
                finish();
            }
        });

    }
    class addCommentListener implements View.OnClickListener{
        User tempUser;
        Dishes tempDishes;
        List<Comment> comments;
        public  addCommentListener(User user,Dishes dishes){
            this.tempUser=user;
            this.tempDishes=dishes;
            comments= LitePal.select("dishes_id=?",String.valueOf(dishes.getId())).find(Comment.class);
        }
        @Override
        public void onClick(View v) {
            double grade=Double.parseDouble(String.valueOf(gradeStar.getRating()));
            String str=addText.getText().toString();

            Log.d(TAG,tempDishes.getName()+"3");//-------------------

            if(str.isEmpty()){
                Toast.makeText(AddCommentPage.this,"未进行评论",Toast.LENGTH_SHORT).show();
            }
            else {
                User user1=LitePal.find(User.class,tempUser.getId(),true);
                Dishes dish1=LitePal.find(Dishes.class,tempDishes.getId(),true);
                Log.d(TAG,str+String.valueOf(grade));

                Comment comment=new Comment();
                comment.setText(str);
                comment.setCommentator(user1);
                comment.setDish(dish1);
                comment.setGrade(grade);
                SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
                Log.d(TAG,sdf.format(new Date()));
                Log.d(TAG,user1.getName());
                Log.d(TAG,dish1.getName());
                comment.setSetDate(sdf.format(new Date()));
                comment.save();
                user1.getComments().add(comment);
                user1.save();

                comment.save();
                Log.d(TAG,String.valueOf(comment.getId()));
                dish1.getComments().add(comment);
                dish1.setCommentCount(dish1.getComments().size());
                dish1.save();

                Toast.makeText(AddCommentPage.this,"已添加",Toast.LENGTH_SHORT).show();
                finish();

            }
        }
    }
}

layout：activity_add_comment_page.xml

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

    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#fcfbf4"
    tools:context=".AddCommentPage">
    <TextView
        android:text="请评分"
        android:textSize="18sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <RatingBar
        android:id="@+id/grade_star"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:rating="5"
        android:stepSize="0.5"
        android:numStars="5"/>
    <TextView
        android:text="请评论"
        android:textSize="18sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <EditText
        android:id="@+id/add_text"
        android:layout_width="match_parent"
        android:layout_height="300sp"
        android:maxLines="6"
        android:maxLength="140"
        android:hint="请在此添加评论，最大140字"
        android:gravity="top"
        android:cursorVisible="true"/>
    <Button
        android:id="@+id/add_btn"
        android:text="确   认   添   加"
        android:layout_height="35dp"
        android:layout_width="match_parent"
        android:layout_marginTop="30dp"
        android:layout_marginBottom="10dp"
        android:background="#beb391"
        android:layout_gravity="center_horizontal"
        android:gravity="center"
        android:textColor="#e3e6c3"
        android:textSize="18sp"
        />
    <Button
        android:id="@+id/cancel_btn"
        android:text="取   消   添   加"
        android:layout_height="35dp"
        android:layout_width="match_parent"
        android:layout_marginBottom="10dp"
        android:background="#beb391"
        android:layout_gravity="center_horizontal"
        android:gravity="center"
        android:textColor="#e3e6c3"
        android:textSize="18sp"
        />

</LinearLayout>