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@Gorilla_ZEN

AndroidのUDPクライアントに遅延を自分で設定できるようにしてみた

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#前回からの変更点
前回のプログラムでは遅延時間を500ミリ秒に設定していましたが、加速度センサの値を計測するにあたり、動作検地をする場合に遅延時間を早めるために遅延を自分で調整できるように改善しました。

#ソースコード

AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET"></uses-permission>

AndroidManifest.xmlにインターネットを使用できるパーミッションを追加しないと動作できないので気をつけること。（2敗）

activity_main.xml
<EditText
        android:id="@+id/IP_Address"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="52dp"
        android:layout_marginEnd="16dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="192.168.0."
        android:textSize="24sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/Port"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="48dp"
        android:layout_marginEnd="16dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="8080"
        android:textSize="24sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/IP_Address" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="280dp"
        android:text="X:"
        android:textSize="32sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="24dp"
        android:text="Y:"
        android:textSize="32sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="24dp"
        android:text="Z:"
        android:textSize="32sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView2" />

    <TextView
        android:id="@+id/X_Data"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="280dp"
        android:text="TextView"
        android:textSize="32sp"
        app:layout_constraintStart_toEndOf="@+id/textView"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/Y_Data"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:text="TextView"
        android:textSize="32sp"
        app:layout_constraintStart_toEndOf="@+id/textView2"
        app:layout_constraintTop_toBottomOf="@+id/X_Data" />

    <TextView
        android:id="@+id/Z_Data"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:text="TextView"
        android:textSize="32sp"
        app:layout_constraintStart_toEndOf="@+id/textView3"
        app:layout_constraintTop_toBottomOf="@+id/Y_Data" />

    <TextView
        android:id="@+id/textView7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="230dp"
        android:text="加速度センサの値"
        android:textSize="32sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/Ran"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="87dp"
        android:layout_marginLeft="87dp"
        android:layout_marginBottom="70dp"
        android:text="通信開始"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginBottom="8dp"
        android:text="IPアドレス"
        android:textSize="24sp"
        app:layout_constraintBottom_toTopOf="@+id/IP_Address"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginBottom="8dp"
        android:text="ポート番号"
        android:textSize="24sp"
        app:layout_constraintBottom_toTopOf="@+id/Port"
        app:layout_constraintStart_toStartOf="parent" />

    <Button
        android:id="@+id/End"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="87dp"
        android:layout_marginRight="87dp"
        android:layout_marginBottom="70dp"
        android:text="通信解除"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <ImageView
        android:id="@+id/LED1"
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:layout_marginStart="100dp"
        android:layout_marginLeft="100dp"
        android:layout_marginBottom="150dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:srcCompat="@drawable/en" />

    <ImageView
        android:id="@+id/LED2"
        android:layout_width="75dp"
        android:layout_height="75dp"
        android:layout_marginEnd="100dp"
        android:layout_marginRight="100dp"
        android:layout_marginBottom="150dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:srcCompat="@drawable/en" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="352dp"
        android:layout_marginEnd="124dp"
        android:layout_marginRight="124dp"
        android:text="Delay"
        android:textSize="32sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/Delay"
        android:layout_width="159dp"
        android:layout_height="49dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="40dp"
        android:layout_marginRight="40dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="100"
        android:textSize="24sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView6" />

レイアウト的にはこんな感じです
※ASUSのK013の場合

MainActivity.java

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.SocketException;
import java.util.Timer;
import java.util.TimerTask;

public class MainActivity extends AppCompatActivity implements SensorEventListener{

    private SensorManager sensorManager;
    private TextView X_Data_TextView;   //加速度センサXの値
    private TextView Y_Data_TextView;   //加速度センサYの値
    private TextView Z_Data_TextView;   //加速度センサZの値
    private float data_X,data_Y,data_Z;
    private String Data;
    private Timer timer1,timer2;
    private mTimerTask1 timerTask1;
    private mTimerTask2 timerTask2;
    private Handler handler = new Handler();
    private Handler handler1 = new Handler();
    private long Delay;
    ImageView LED1,LED2;


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

        sensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
        X_Data_TextView = findViewById(R.id.X_Data);
        Y_Data_TextView = findViewById(R.id.Y_Data);
        Z_Data_TextView = findViewById(R.id.Z_Data);

        LED1 = findViewById(R.id.LED1);
        LED2 = findViewById(R.id.LED2);
        LED1.setImageResource(R.drawable.en);
        LED2.setImageResource(R.drawable.en);

        Button ran = findViewById(R.id.Ran);
        Button end = findViewById(R.id.End);

        ran.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(null != timer1){
                    timer1.cancel();
                    timer1 = null;
                }

                String delay = ((EditText)findViewById(R.id.Delay)).getText().toString();
                Delay = Long.parseLong(delay);

                timer1 = new Timer();
                timerTask1 = new mTimerTask1();
                timer1.schedule(timerTask1,0, Delay);

                timer2 = new Timer();
                timerTask2 = new mTimerTask2();
                timer2.schedule(timerTask2,0,Delay);
            }
        });

        end.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if(null != timer1){
                    timer1.cancel();
                    timer1 = null;
                }
                final String address = ((EditText) findViewById(R.id.IP_Address)).getText().toString();
                String port = ((EditText) findViewById(R.id.Port)).getText().toString();
                int Port = Integer.parseInt(port);
                String exit = "exit";
                byte buf[] = new byte[exit.length()];

                try {
                    buf = exit.getBytes("SHIFT_JIS");
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }

                InetSocketAddress inetSocketAddress = new InetSocketAddress(address, Port);
                final DatagramPacket datagramPacket = new DatagramPacket(buf, buf.length, inetSocketAddress);

                AsyncTask<DatagramPacket, Void, Void> task = new AsyncTask<DatagramPacket, Void, Void>() {
                    @Override
                    protected Void doInBackground(DatagramPacket... datagramPackets) {
                        DatagramSocket datagramSocket = null;
                        try {
                            datagramSocket = new DatagramSocket();
                            datagramSocket.send(datagramPackets[0]);
                            datagramSocket.close();
                        } catch (SocketException e) {
                            e.printStackTrace();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                        return null;
                    }

                };
                task.execute(datagramPacket);

            }
        });

    }



    @Override
    protected void onResume(){
        super.onResume();
        //Event Listener登録
        Sensor accel = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        sensorManager.registerListener((SensorEventListener) this,accel,SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onPause(){
        super.onPause();
        //Event Listener登録解除
        sensorManager.unregisterListener((SensorEventListener) this);
    }

    @Override
    public void onSensorChanged(SensorEvent event){
        if(event.sensor.getType() == Sensor.TYPE_ACCELEROMETER){
            X_Data_TextView.setText(String.format("%.3f",500+(event.values[0])*25));
            Y_Data_TextView.setText(String.format("%.3f",500+(event.values[1])*25));
            Z_Data_TextView.setText(String.format("%.3f",500+(event.values[2]) *25));
            Data = (500+event.values[0]*25) + " " +
                    (500+event.values[1]*25) + " " +
                    (500+event.values[2]*25);

            data_X= (500+event.values[0]*25);
            data_Y= (500+event.values[1]*25);
            data_Z= (500+event.values[2]*25);


        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy){

    }

    private class mTimerTask2 extends TimerTask{
        @Override
        public void run() {
            handler.post(new Runnable() {
                @Override
                public void run() {
                        if (data_X >= 700) {
                            LED1.setImageResource(R.drawable.en_gleen);
                        } else if (data_X <= 300) {
                            LED1.setImageResource(R.drawable.en);
                        } else if (data_Y >= 700) {
                            LED2.setImageResource(R.drawable.en_red);
                        } else if (data_Y <= 300) {
                            LED2.setImageResource(R.drawable.en);
                        } else if (data_Z >= 700) {
                            LED1.setImageResource(R.drawable.en_gleen);
                            LED2.setImageResource(R.drawable.en_red);
                        } else if (data_Z <= 300) {
                            LED1.setImageResource(R.drawable.en);
                            LED2.setImageResource(R.drawable.en);
                        }
                }
            });
        }

    }
    private class mTimerTask1 extends TimerTask{
        @Override
        public void run(){

            handler.post(new Runnable() {
                @Override
                public void run() {
                    final String address = ((EditText) findViewById(R.id.IP_Address)).getText().toString();
                    String port = ((EditText) findViewById(R.id.Port)).getText().toString();
                    int Port = Integer.parseInt(port);
                    byte buf[] = new byte[Data.length()];

                    try {
                        buf = Data.getBytes("SHIFT_JIS");
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    }

                    InetSocketAddress inetSocketAddress = new InetSocketAddress(address, Port);
                    final DatagramPacket datagramPacket = new DatagramPacket(buf, buf.length, inetSocketAddress);


                    AsyncTask<DatagramPacket, Void, Void> task = new AsyncTask<DatagramPacket, Void, Void>() {
                        @Override
                        protected Void doInBackground(DatagramPacket... datagramPackets) {
                            DatagramSocket datagramSocket = null;

                            try {
                                datagramSocket = new DatagramSocket();
                                datagramSocket.send(datagramPackets[0]);
                                datagramSocket.close();
                            } catch (SocketException e) {
                                e.printStackTrace();
                            } catch (IOException e) {
                                e.printStackTrace();
                            }

                            return null;
                        }

                    };
                    task.execute(datagramPacket);
                }
            });

        }
    }
}
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