第4天~点餐系统

2022/1/19再练习一次:

改最上面标题的地方:

使用按钮ToggleButton和Switch

文字选large-文字large

Plain Text-
设定id不能写中文

搜寻toggle button-2选1

设定id

switch1-2选1

编辑文字内容:switch1-1

再来是button

用onClick就不用借助id不用绑定
button用onClick绑定

button用onClick绑定-因为还没有绑定所以才反红-因为java档还没有动

button用onClick绑定-因为还没有绑定所以才反红-用灯泡来建立

button用onClick绑定-因为还没有绑定所以才反红-建立onClick

里面的参数是固定的

public void onClick(View view) {
    }

整个Code

package com.huang.myui2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

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

    public void onClick(View view) {
    }
}

各部分按键id和onClick

安卓-流程:

1-宣告变数
2-初始化变数
3-各自赋予功能

各部分按键id和onClick

变数跟id一样比较好记(没有一定要一样)
安卓-流程:

1-宣告变数
2-初始化变数
3-各自赋予功能

package com.huang.myui2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;


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

    public void onClick(View view) {
    }
}

onCreate 是版面/元件初始化-功能:

1- java结合 xml
2- 赋予功能

变数跟id一样比较好记(没有一定要一样)
安卓-流程:

1-宣告变数
2-初始化变数
3-赋予功能

R的意思是目录-里面有 id / layout /string ....

先右findViewById(R.id.input);

後左input

package com.huang.myui2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;


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

        input = findViewById(R.id.input);
        

    }

    public void onClick(View view) {
    }
}

初始化变数-

package com.huang.myui2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;


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

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);


    }

    public void onClick(View view) {
    }
}

继续初始化onCreate-宣告变数

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;

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

    public void onClick(View view) {
    }
}

写在onCreat

1-绑定=java结合xml
2-赋予功能

3-各自赋予功能-R档是APP的目录档

先右後左
input = findViewById(R.id.input);

继续初始化- //初始化元件

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;

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

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

    }

    public void onClick(View view) {
    }
}

赋予功能:

EditText input; 接收资料
ToggleButton toggleButton;赋予功能-装侦听器

![https://ithelp.ithome.com.tw/upload/images/20220123/20119035P6lBUQEI47.png](https://ithelp.ithome.com.tw/upload/images/20220123/20119035P6lBUQEI47.png)

产生物件:
![https://ithelp.ithome.com.tw/upload/images/20220123/20119035pnZarGv2V6.png](https://ithelp.ithome.com.tw/upload/images/20220123/20119035pnZarGv2V6.png)

手动改

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)

目前程序码:

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            }
        });

    }

    public void onClick(View view) {
    }
}

使用Toast就是在APP上短暂停留然後消失

来java写if和else

这里的true是
if(isChecked)

makeText()
里面要放3样才不会反红;

1- MainActivity.this-MainActivity.this
2-要开还是关或任何文字-"OK"
3-显示时间-LENGTH_SHORT 显示短 /

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_SHORT).show();
                }
                else {}

            }
        });

    }

    public void onClick(View view) {
    }
}

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_SHORT).show();
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_SHORT).show();

                }

            }
        });

    }

    public void onClick(View view) {
    }
}

这里我的Toast应该是因为记忆体不足显示不出来

在手机上可以

//switch1赋予功能:

Switch switch1;赋予功能


package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //toggleButton赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();

                }

            }
        });
        //switch1赋予功能:

        switch1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();

                }

            }
        });

    }

    public void onClick(View view) {
    }
}

也是用手机测试:

//透过button蒐集资料

要先宣告空的字串:
String str = "";

button宣告的字串-

String str1,str2,str3;

str1是togglebutton 变数

str2是switch 变数

str3是edittext 变数

按钮按下显示-

然後再回到程序码里去写:

从togglebutton

从switch

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;
    String str1,str2,str3;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //toggleButton赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->OK";
                }
                else {
                    Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->NO";
                }

            }
        });
        //switch1赋予功能:

        switch1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->OK";
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->NO";

                }

            }
        });

    }

    //透过button蒐集资料

    public void onClick(View view) {
        
    }
}

从edittext是写在最下面的

public void onClick(View view) {

    }

写里面:

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;
    String str1,str2,str3;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //toggleButton赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->OK";
                }
                else {
                    Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->NO";
                }

            }
        });
        //switch1赋予功能:

        switch1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->OK";
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->NO";

                }

            }
        });

    }

    //透过button蒐集资料

    public void onClick(View view) {

        str3 = input.getText().toString();
        Toast.makeText(MainActivity.this,
                str1+"\n"+str2+"\n"+str3,
                Toast.LENGTH_LONG).show();

    }
}

设定画面初始值-一开始UI看到的样子:

从onCreate以下开始~

input初始值

toggleButton初始值-一开始UI看到的样子:

str1 = "toggleButton-->NO";

switch1初始值-一开始UI看到的样子:

String str1,str2,str3;

str1是togglebutton 变数

str2是switch 变数

str3是edittext 变数

写在外头才是一开始看到的样子~

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;
    String str1,str2,str3;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        input.setText("NO INPUT");
        str1 = "toggleButton-->NO";
        str2 = "switch1-->OK";


        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //toggleButton赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {


                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->OK";
                }
                else {
                    Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->NO";
                }

            }
        });
        //switch1赋予功能:

        switch1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->OK";
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->NO";

                }

            }
        });

    }

    //透过button蒐集资料

    public void onClick(View view) {

        str3 = input.getText().toString();
        Toast.makeText(MainActivity.this,
                str1+"\n"+str2+"\n"+str3,
                Toast.LENGTH_LONG).show();

    }
}

然後对应到最後的显示:

加入

str3 = input.getText().toString();

package com.huang.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    //宣告变数
    EditText input;
    ToggleButton toggleButton;
    Switch switch1;
    String str1,str2,str3;

    //初始化元件
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        input = findViewById(R.id.input);
        input.setText("NO INPUT");
        str1 = "toggleButton-->NO";
        str2 = "switch1-->NO";
        str3 = input.getText().toString();


        toggleButton = findViewById(R.id.toggleButton);
        switch1 = findViewById(R.id.switch1);

        //toggleButton赋予功能:

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {


                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->OK";
                }
                else {
                    Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str1 = "toggleButton-->NO";
                }

            }
        });
        //switch1赋予功能:

        switch1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    Toast.makeText(MainActivity.this,"OK",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->OK";
                }
                else {Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_LONG).show();
                    str2 = "switch1-->NO";

                }

            }
        });

    }

    //透过button蒐集资料

    public void onClick(View view) {

        str3 = input.getText().toString();
        Toast.makeText(MainActivity.this,
                str1+"\n"+str2+"\n"+str3,
                Toast.LENGTH_LONG).show();

    }
}

显示在手机上-

打字入-

0.0中秋连假开始~本来想好好写~
可是跑去做和果子了~

这篇写点餐系统-
首先先完成表格的参考线-使用guideline

XML排版出来的程序码:

<?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"
    tools:context=".MainActivity">

    <!--  绘制参考线  -->
    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.1" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.9" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline0"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.3" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.1" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.18" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.25" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.35" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.45" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline8"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.6" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline9"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.7" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline10"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.8" />

    <!-- 元件标题 -->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="好吃便当订购表"
        android:textColor="@color/design_default_color_error"
        android:textSize="36sp"
        app:layout_constraintBottom_toTopOf="@+id/guideline3"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="姓名"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@+id/guideline4"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@+id/guideline3" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="电话"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@id/guideline5"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@id/guideline4" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="主餐"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@id/guideline6"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@id/guideline5" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="饮料"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@id/guideline7"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@id/guideline6" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="备注"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@id/guideline8"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@id/guideline7" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="数量"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@id/guideline9"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@id/guideline8" />

    <TextView
        android:id="@+id/textView7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="小计"
        android:textSize="20sp"
        app:layout_constraintBottom_toTopOf="@+id/guideline10"
        app:layout_constraintEnd_toStartOf="@+id/guideline0"
        app:layout_constraintStart_toStartOf="@+id/guideline1"
        app:layout_constraintTop_toTopOf="@id/guideline9" />




</androidx.constraintlayout.widget.ConstraintLayout>

贴的地方: