体重管理アプリ

2022.01.26

MainActivity

カレンダー画面の表示
カレンダー表示はアダプタークラスを使用


package to.msn.wings.weightmanagement;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CalendarView;
import android.widget.GridView;
import android.widget.TextView;

import java.text.SimpleDateFormat;
import java.util.Locale;

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {

    private TextView titleText;
    private Button prevButton, nextButton;
    private CalendarAdapter mCalendarAdapter;
    private GridView calendarGridView;


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


        titleText = findViewById(R.id.titleText);
        prevButton = findViewById(R.id.prevButton);
        prevButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCalendarAdapter.prevMonth();
                titleText.setText(mCalendarAdapter.getTitle());
            }
        });
        nextButton = findViewById(R.id.nextButton);
        nextButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCalendarAdapter.nextMonth();
                titleText.setText(mCalendarAdapter.getTitle());
            }
        });
        calendarGridView = findViewById(R.id.calendarGridView);
        mCalendarAdapter = new CalendarAdapter(this);
        calendarGridView.setAdapter(mCalendarAdapter);
        titleText.setText(mCalendarAdapter.getTitle());

        calendarGridView.setOnItemClickListener(this);

    }


    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {


        Intent intent = new Intent(getApplicationContext(), ContentActivity.class);
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.JAPAN);
        String str = dateFormat.format(mCalendarAdapter.getItem(position));
        intent.putExtra("date", str);
        startActivity(intent);

    }

    //オプションメニューの表示
    public boolean onCreateOptionsMenu(Menu menu){
        getMenuInflater().inflate(R.menu.option_menu,menu);
        return true;
    }
    //オプションメニューの選択時の画面遷移
    public boolean onOptionsItemSelected(MenuItem item){
        switch(item.getItemId()) {
            case R.id.item1:

                break;
            case R.id.item2:
                Intent intent2 = new Intent(MainActivity.this, GraphActivity.class);
                startActivity(intent2);
                break;
        }
        return true;
    }

}

WeightFatDatabase

日付、体重、体脂肪　データベースSQLite


package to.msn.wings.weightmanagement;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class WeightFatDatabase extends SQLiteOpenHelper {
    static final private String DBNAME = "weightfat.sqlite";
    static final private int VERSION = 1;

    WeightFatDatabase(Context context){
        super(context,DBNAME,null,VERSION);
    }

    @Override
    public void onOpen(SQLiteDatabase db){
        super.onOpen(db);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("CREATE TABLE weightfat (" +
                "dating TEXT PRIMARY KEY, weight Float, fat Float)");

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS weightfat");
        onCreate(db);

    }
}

CalendarAdapter

アダプタークラスを作成しカレンダーを表示


package to.msn.wings.weightmanagement;

import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

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

public class CalendarAdapter extends BaseAdapter {
    private List dateArray = new ArrayList();
    private Context mContext;
    private DateManager mDateManager;
    private LayoutInflater mLayoutInflater;
    private WeightFatDatabase helper = null; //データベースヘルパー


    //カスタムセルを拡張したらここでWigetを定義
    private static class ViewHolder {
        public TextView dateText;
        public TextView memoText;
        public TextView bmiText;
    }

    public CalendarAdapter(Context context){
        mContext = context;
        mLayoutInflater = LayoutInflater.from(mContext);
        mDateManager = new DateManager();
        dateArray = mDateManager.getDays();
    }

    @Override
    public int getCount() {
        return dateArray.size();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = mLayoutInflater.inflate(R.layout.calendar_cell, null);
            holder = new ViewHolder();
            holder.dateText = convertView.findViewById(R.id.dateText);

            holder.memoText = convertView.findViewById(R.id.memoText);
            holder.bmiText = convertView.findViewById(R.id.bmiText);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder)convertView.getTag();
        }

        //セルのサイズを指定
        float dp = mContext.getResources().getDisplayMetrics().density;
        AbsListView.LayoutParams params = new AbsListView.LayoutParams(parent.getWidth()/7 - (int)dp, (parent.getHeight() - (int)dp * mDateManager.getWeeks() ) / mDateManager.getWeeks());
        convertView.setLayoutParams(params);

        //日付のみ表示させる
        SimpleDateFormat dateFormat = new SimpleDateFormat("d", Locale.JAPAN);
        holder.dateText.setText(dateFormat.format(dateArray.get(position)));

        //カレンダーセルに体重・体脂肪

        helper = new WeightFatDatabase(mContext);


        SimpleDateFormat dateFormat1 = new SimpleDateFormat("yyyy-MM-dd", Locale.JAPAN);
        String date1 = dateFormat1.format(dateArray.get(position));

        String[] clos = {"dating","weight","fat"};
        String[] dating = {date1};


        try (SQLiteDatabase db = helper.getReadableDatabase();

        Cursor cs = db.query("weightfat" , clos , "dating = ?",dating,null,null,null,null))
        {
            String memo = "";
            if (cs.moveToFirst()){
                memo += cs.getString(1) + "kg\n";
                memo += cs.getString(2) + "%";
                holder.memoText.setText(memo);
            }else{
                memo = "";
                holder.memoText.setText(memo);
            }
        }

        //当月以外のセルをグレーアウト
        if (mDateManager.isCurrentMonth(dateArray.get(position))){
            convertView.setBackgroundColor(Color.WHITE);
        }else {
            convertView.setBackgroundColor(Color.LTGRAY);
        }

        //当日の背景
        if (mDateManager.isToday(dateArray.get(position))) {
            convertView.setBackgroundColor(Color.YELLOW);

        }

        //日曜日を赤、土曜日を青に
        int colorId;
        switch (mDateManager.getDayOfWeek(dateArray.get(position))){
            case 1:
                colorId = Color.RED;
                break;
            case 7:
                colorId = Color.BLUE;
                break;

            default:
                colorId = Color.BLACK;
                break;
        }
        holder.dateText.setTextColor(colorId);

        return convertView;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public Object getItem(int position) {
        return dateArray.get(position);
    }

    //表示月を取得
    public String getTitle(){
        SimpleDateFormat format = new SimpleDateFormat("yyyy.MM", Locale.JAPAN);
        return format.format(mDateManager.mCalendar.getTime());
    }

    //翌月表示
    public void nextMonth(){
        mDateManager.nextMonth();
        dateArray = mDateManager.getDays();
        this.notifyDataSetChanged();
    }

    //前月表示
    public void prevMonth(){
        mDateManager.prevMonth();
        dateArray = mDateManager.getDays();
        this.notifyDataSetChanged();
    }
}

DateManager

カレンダー日付を操作する専用クラス。


package to.msn.wings.weightmanagement;

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


public class DateManager {
    Calendar mCalendar;

    public DateManager(){
        mCalendar = Calendar.getInstance();
    }

    //当月の要素を取得
    public List getDays(){
        //現在の状態を保持
        Date startDate = mCalendar.getTime();

        //GridViewに表示するマスの合計を計算
        int count = getWeeks() * 7 ;

        //当月のカレンダーに表示される前月分の日数を計算
        mCalendar.set(Calendar.DATE, 1);
        int dayOfWeek = mCalendar.get(Calendar.DAY_OF_WEEK) - 1;
        mCalendar.add(Calendar.DATE, -dayOfWeek);

        List days = new ArrayList<>();

        for (int i = 0; i < count; i ++){
            days.add(mCalendar.getTime());
            mCalendar.add(Calendar.DATE, 1);
        }

        //状態を復元
        mCalendar.setTime(startDate);

        return days;
    }

    //当月かどうか確認
    public boolean isCurrentMonth(Date date){
        SimpleDateFormat format = new SimpleDateFormat("yyyy.MM", Locale.JAPAN);
        String currentMonth = format.format(mCalendar.getTime());
        if (currentMonth.equals(format.format(date))){
            return true;
        }else {
            return false;
        }
    }

    //当日かどうか確認
    public boolean isToday(Date date) {

        SimpleDateFormat format = new SimpleDateFormat("yyyy.MM.dd", Locale.JAPAN);
        String today = format.format(Calendar.getInstance().getTime());

        return today.equals(format.format(date));
    }


    //週数を取得
    public int getWeeks(){
        return mCalendar.getActualMaximum(Calendar.WEEK_OF_MONTH);
    }

    //曜日を取得
    public int getDayOfWeek(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.DAY_OF_WEEK);
    }

    //翌月へ
    public void nextMonth(){
        mCalendar.add(Calendar.MONTH, 1);
    }

    //前月へ
    public void prevMonth(){
        mCalendar.add(Calendar.MONTH, -1);
    }
}

ContentActivity

カレンダーの日付をタップ後の体重、体脂肪の入力画面


package to.msn.wings.weightmanagement;

import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.text.SimpleDateFormat;
import java.util.Locale;

public class ContentActivity extends AppCompatActivity {

    private String currentDate;
    private WeightFatDatabase helper = null; //データベースヘルパー

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

        //テキストビューにタップした日付表示
        TextView tvToday = findViewById(R.id.txtToday);
        Intent intent = getIntent();
        currentDate = intent.getStringExtra("date");
        tvToday.setText(currentDate);

        //データベース準備
        helper = new WeightFatDatabase(this);

        //入力済みのテキストに体重・体脂肪の表示
        EditText txtWeight =  (EditText) findViewById(R.id.txtWeight);
        EditText txtBodyfat =  (EditText) findViewById(R.id.txtBodyfat);
        Button btnUpdate = findViewById(R.id.btnUpdate);
        String[] clos = {"dating","weight","fat"};
        String[] params = {tvToday.getText().toString()};
        try (SQLiteDatabase db = helper.getReadableDatabase();
             Cursor cs = db.query("weightfat" , clos , "dating = ?",params,null,null,null,null) )
        {
            if (cs.moveToFirst()){
                txtWeight.setText(cs.getString(1));
                txtBodyfat.setText(cs.getString(2));

                btnUpdate.setText("編集");
            }
        }
    }

    public void onUpdate(View view){
        EditText txtWeight =  (EditText) findViewById(R.id.txtWeight);
        EditText txtBodyfat =  (EditText) findViewById(R.id.txtBodyfat);

        //体重・体脂肪の入力

        try (SQLiteDatabase db = helper.getWritableDatabase()){
            ContentValues cv = new ContentValues();
            cv.put("dating",currentDate);
            cv.put("weight",txtWeight.getText().toString());
            cv.put("fat",txtBodyfat.getText().toString());
            db.insertWithOnConflict("weightfat",null, cv, SQLiteDatabase.CONFLICT_REPLACE);

        }
        finish();
    }

}

GraphActivity

体重の推移グラフ表示


package to.msn.wings.weightmanagement;

import androidx.appcompat.app.AppCompatActivity;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.Typeface;
import android.os.Bundle;

import com.github.mikephil.charting.charts.LineChart;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;


import java.util.ArrayList;

public class GraphActivity extends AppCompatActivity {

    private LineChart mChart;
    private WeightFatDatabase helper = null; //データベースヘルパー

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

        mChart = findViewById(R.id.lineChart);
        helper = new WeightFatDatabase(this);
        ArrayList xLabel = new ArrayList<>();
        int ava = 50;


        // Grid背景色
        mChart.setDrawGridBackground(true);

        // no description text
        mChart.getDescription().setEnabled(true);

        // Grid縦軸を破線
        XAxis xAxis = mChart.getXAxis();
        xAxis.enableGridDashedLine(10f, 10f, 0f);
        xAxis.setLabelCount(7, true);
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);

        YAxis leftAxis = mChart.getAxisLeft();
        // Y軸最大最小設定
        leftAxis.setAxisMaximum(80f);
        leftAxis.setAxisMinimum(40f);
        // Grid横軸を破線
        leftAxis.enableGridDashedLine(10f, 10f, 0f);
        leftAxis.setDrawZeroLine(true);

        // 右側の目盛り
        mChart.getAxisRight().setEnabled(false);

        // add data
        setData();

        mChart.animateX(1000);
        //mChart.invalidate();

        // dont forget to refresh the drawing
        // mChart.invalidate();

    }

    private void setData() {
        // Entry()を使ってLineDataSetに設定できる形に変更してarrayを新しく作成
        ArrayList values = new ArrayList<>();

        //データベースから体重データの取得
        try (SQLiteDatabase db = helper.getReadableDatabase();
             Cursor cs = db.rawQuery("SELECT * FROM weightfat  ORDER BY dating",null))
        {
            int number = 0;
            boolean eol = cs.moveToFirst();


            while (eol){
                if (cs.getFloat(1 ) != 0){
                    values.add(new Entry(number, cs.getFloat(1), null, null));
                    number++;
                    eol = cs.moveToNext();

                }else {
                    eol = cs.moveToNext();
                }
            }

        }

        LineDataSet set1;

        if (mChart.getData() != null &&
                mChart.getData().getDataSetCount() > 0) {

            set1 = (LineDataSet) mChart.getData().getDataSetByIndex(0);
            set1.setValues(values);
            mChart.getData().notifyDataChanged();
            mChart.notifyDataSetChanged();
        } else {
            set1 = new LineDataSet(values, "体重");

            set1.setColor(Color.BLACK);
            set1.setCircleColor(Color.BLACK);


            ArrayList dataSets = new ArrayList();
            dataSets.add(set1); // add the datasets

            // create a data object with the datasets
            LineData lineData = new LineData(dataSets);

            // set data
            mChart.setData(lineData);
        }

    }


}

activity_main

メインアクティビティのレイアウト

<?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:orientation="vertical"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:background="@color/grayColor"
   >

    <RelativeLayout
       android:layout_width="match_parent"
       android:layout_height="0dp"
       android:layout_weight="2"
       android:background="@color/whiteColor">

        <TextView
           android:id="@+id/titleText"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="2018.2"
           android:textSize="20sp"
           android:layout_centerInParent="true"/>

        <Button
           android:id="@+id/prevButton"
           android:layout_width="wrap_content"
           android:layout_height="match_parent"
           android:text="Prev"
           android:layout_alignParentLeft="true"
           android:layout_marginVertical="10dp"
           android:layout_marginLeft="10dp"
           android:background="@color/colorAccent"/>

        <Button
           android:id="@+id/nextButton"
           android:layout_width="wrap_content"
           android:layout_height="match_parent"
           android:text="Next"
           android:layout_alignParentRight="true"
           android:layout_marginVertical="10dp"
           android:layout_marginRight="10dp"
           android:background="@color/colorAccent"/>
    </RelativeLayout>

    <LinearLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:orientation="horizontal"
       android:layout_marginVertical="1dp">

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_marginHorizontal="1dp"
           android:textAlignment="center"
           android:text="日"
           android:background="@color/whiteColor"
           android:textColor="@color/redColor"/>

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_marginRight="1dp"
           android:layout_weight="1"
           android:background="@color/whiteColor"
           android:text="月"
           android:textColor="@color/blackColor"
           android:textAlignment="center"/>

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_marginRight="1dp"
           android:textAlignment="center"
           android:text="火"
           android:textColor="@color/blackColor"
           android:background="@color/whiteColor"/>

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_marginRight="1dp"
           android:textAlignment="center"
           android:text="水"
           android:textColor="@color/blackColor"
           android:background="@color/whiteColor"/>

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_marginRight="1dp"
           android:textAlignment="center"
           android:text="木"
           android:textColor="@color/blackColor"
           android:background="@color/whiteColor"/>

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_marginRight="1dp"
           android:textAlignment="center"
           android:text="金"
           android:textColor="@color/blackColor"
           android:background="@color/whiteColor"/>

        <TextView
           android:layout_width="0dp"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_marginRight="1dp"
           android:textAlignment="center"
           android:text="土"
           android:textColor="@color/blueColor"
           android:background="@color/whiteColor"/>

    </LinearLayout>

    <GridView
       android:id="@+id/calendarGridView"
       android:layout_width="match_parent"
       android:layout_height="0dp"
       android:layout_weight="15"
       android:horizontalSpacing="1dp"
       android:layout_marginLeft="1dp"
       android:numColumns="7"
       android:stretchMode="columnWidth"
       android:verticalSpacing="1dp"></GridView>

</LinearLayout>



 

activity_content

コンテンツアクティビティのレイアウト

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


    <TableLayout
       android:id="@+id/tableLayout"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:stretchColumns="1">

        <TableRow
           android:layout_width="match_parent"
           android:layout_height="match_parent">

            <TextView
               android:id="@+id/tvToday"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:text="日付"/>

            <TextView
               android:id="@+id/txtToday"
               android:layout_width="match_parent"
               android:layout_height="wrap_content">

                <requestFocus/>
            </TextView>
        </TableRow>

        <TableRow
           android:layout_width="match_parent"
           android:layout_height="match_parent">

            <TextView
               android:id="@+id/tvWeight"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"

               android:text="体重"/>

            <EditText
               android:id="@+id/txtWeight"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:inputType="numberDecimal"/>

        </TableRow>

        <TableRow
           android:layout_width="match_parent"
           android:layout_height="match_parent">

            <TextView
               android:id="@+id/tvBodyfat"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:text="体脂肪"/>

            <EditText
               android:id="@+id/txtBodyfat"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:inputType="numberDecimal"/>

        </TableRow>
    </TableLayout>

    <Button
       android:id="@+id/btnUpdate"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:onClick="onUpdate"
       android:text="更新"/>

</LinearLayout>
 

calendar_cell

カレンダーセルのレイアウト

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical">

    <TextView
       android:id="@+id/dateText"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:textAlignment="center"/>

    <!--ここに拡張可能-->
    <!--追加-->

   <TextView
       android:id="@+id/memoText"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_marginTop="20dp"
       android:textAlignment="center"/>

    <TextView
       android:id="@+id/bmiText"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_marginTop="15dp"
       android:textAlignment="center"/>


</RelativeLayout>
 

activity_graph

体重グラフのレイアウト

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

    <com.github.mikephil.charting.charts.LineChart
       android:id="@+id/lineChart"
       android:layout_width="match_parent"
       android:layout_height="match_parent"/>

</LinearLayout>
 

activity_graph

カラーファイル

<?xml version="1.0"encoding="utf-8"?>
<resources>
    <colorname="purple_200">#FFBB86FC</color>
    <colorname="purple_500">#FF6200EE</color>
    <colorname="purple_700">#FF3700B3</color>
    <colorname="teal_200">#FF03DAC5</color>
    <colorname="teal_700">#FF018786</color>
    <colorname="black">#FF000000</color>
    <colorname="white">#FFFFFFFF</color>
    <colorname="colorPrimary">#3F51B5</color>
    <colorname="colorPrimaryDark">#303F9F</color>
    <colorname="colorAccent">#FF4081</color>
    <colorname="grayColor">#777</color>
    <colorname="blueColor">#00F</color>
    <colorname="redColor">#F00</color>
    <colorname="whiteColor">#FFF</color>
    <colorname="blackColor">#000</color>
</resources>
 
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