[JAVA] I tried to make it possible to set the delay for the UDP client of Android by myself
Changes from the last time
In the previous program, the delay time was set to 500 milliseconds, but when measuring the value of the accelerometer, it has been improved so that the delay can be adjusted by yourself in order to shorten the delay time when performing motion detection. ..
Source code
AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
Please note that it will not work unless you add permission to use the Internet to AndroidManifest.xml. (2 losses)
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="Accelerometer value"
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="Start communication"
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 address"
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="port number"
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="Communication cancellation"
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" />
The layout looks like this
- For ASUS K013
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; //Accelerometer X value
private TextView Y_Data_TextView; //Accelerometer Y value
private TextView Z_Data_TextView; //Accelerometer Z value
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 registration
Sensor accel = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
sensorManager.registerListener((SensorEventListener) this,accel,SensorManager.SENSOR_DELAY_NORMAL);
}
@Override
protected void onPause(){
super.onPause();
//Event Listener unregistered
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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