# AN25 課題No.04
###### tags: `課題`

//activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center"
    >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text1"
        />

    <EditText
        android:id="@+id/edit_height"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:inputType="numberDecimal"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text2"
        />

    <EditText
        android:id="@+id/edit_weight"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:inputType="numberDecimal"
        />

    <Button
        android:id="@+id/button_calc"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text3"
        android:onClick="buttonMethod"
        />

    <TableRow
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        />
</LinearLayout>

//result.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center"
    >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dip"
        android:text="@string/result_msg"
        />

    <TextView
        android:id="@+id/result_value"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:textSize="30sp"
        android:textColor="#ff0000"
        />

    <TextView
        android:id="@+id/result_judge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:textSize="30sp"
        android:textColor="#ff0000"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dip"
        android:text="@string/good_msg"
        />

    <TextView
        android:id="@+id/good_weight"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:textSize="30sp"
        android:textColor="#ff0000"
        />

    <Button
        android:text="@string/btn_reset"
        android:id="@+id/button_reset"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="buttonMethod"
        />



    <TableRow
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        />
</LinearLayout>

//string.xml
<resources>
    <string name="app_name">MyBMI</string>
    <string name="sub_name">Result</string>
    <string name="action_settings">MyBMI</string>
    <string name="text1">身長を入力してください(cm)</string>
    <string name="text2">体重を入力してください(kg)</string>
    <string name="text3">BMI値を計算</string>
    <string name="result_judge_0">やせています</string>
    <string name="result_judge_1">標準です</string>
    <string name="result_judge_2">太っています</string>
    <string name="result_msg">あなたのBMI値は...</string>
    <string name="good_msg">標準体重まで</string>
    <string name="btn_reset">リセット</string>
</resources>

//MainActivty.java
package nhs00650.hal.ac.mybmi;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.view.View;
import android.widget.TextView;
import android.widget.EditText;



public class MainActivity extends AppCompatActivity {

    private EditText heightEditText;
    private EditText weightEditText;

    float heightint;
    float weightint;

    float bmiint;
    String bmistr;

    float waweight;
    float rweight;
    String rweightStr;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        heightEditText = (EditText)findViewById(R.id.edit_height);
        weightEditText = (EditText)findViewById(R.id.edit_weight);
    }

    public void buttonMethod(View btn_calc) {
        heightint = Float.parseFloat(heightEditText.getText().toString());
        weightint = Float.parseFloat(weightEditText.getText().toString());
        bmiMethod();

        Intent result_act = new Intent(MainActivity.this, Result.class);
        result_act.putExtra("BMI", bmiint);
        result_act.putExtra("GOODWEIGHT", rweight);
        startActivity(result_act);
    }

    public void bmiMethod() {
        heightint = heightint / 100;
        float heightintdub = heightint * heightint;
        bmiint = weightint / heightintdub;
        bmistr = String.format("%.5f",bmiint);


        waweight = heightint * heightint * 22;
        rweight = waweight - weightint;
        rweightStr = String.format("%.5f",rweight);

    }
}

//result.java
package nhs00650.hal.ac.mybmi;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.content.Intent;
import androidx.appcompat.app.AppCompatActivity;

import androidx.appcompat.app.AppCompatActivity;

import org.w3c.dom.Text;


public class Result extends AppCompatActivity {

    private TextView resultTextView;
    private TextView judgeTextView;
    private TextView goodTextView;

    float bmiint;
    String bmistr;

    float goodint;
    String goodStr;

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

        resultTextView = (TextView)findViewById(R.id.result_value);
        judgeTextView = (TextView)findViewById(R.id.result_judge);
        goodTextView = (TextView)findViewById(R.id.good_weight);

        Bundle extras = getIntent().getExtras();
        if(extras != null){
            bmiint = extras.getFloat("BMI");
            goodint = extras.getFloat("GOODWEIGHT");

            peroperoMethod();
        }


    }

    public void peroperoMethod() {
        if(bmiint < 18.5){
            judgeTextView.setText(R.string.result_judge_0);
        }else if(bmiint < 25.0) {
            judgeTextView.setText(R.string.result_judge_1);
        }else{
            judgeTextView.setText(R.string.result_judge_2);
        }

        bmistr = String.format("%.5f",bmiint);
        resultTextView.setText(bmistr);

        goodStr = String.format("%.5f",goodint);
        goodTextView.setText(goodStr);

    }

    public void buttonMethod(View btn_reset){
        Intent reset_act = new Intent(Result.this, MainActivity.class);
        startActivity(reset_act);
    }
}

//Android.manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="nhs00650.hal.ac.mybmi">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".Result"
            android:label="@string/sub_name">
        </activity>
    </application>

</manifest>

## 雑談 (0→やまぴ 1→みや 2→やすい 3→りょうくん 4→アミカ 5→やの)

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