Android Open Source - CarRemote Control Activity

• Back to App/control  ↑

From Project

Back to project page CarRemote.

License

The source code is released under:

GNU General Public License

Java Source Code

package at.cartoffel.remote;
//from w w w .j a v a 2s .  c  o  m
import java.util.Timer;
import java.util.TimerTask;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.util.Log;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.TextView;

public class ControlActivity extends Activity {
  Thread orders;
  
  static boolean pressed = false;

    //Create references for showing the distances
  static TextView textview_frontDistance;
  static TextView textview_backDistance;
  static TextView textview_leftDistance;
  static TextView textview_rightDistance;
  static TextView textview_speed;


  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_control);
    
    //Start thread for receiving messanges from Arduino Microcontroller
    Thread receive = new Thread(new WifiReceiver(this));
    receive.start();
    
    setButtonListeners();
    
    textview_frontDistance = (TextView) findViewById(R.id.textview_frontDistance);
    textview_frontDistance.setTextColor(Color.WHITE);
    textview_backDistance = (TextView) findViewById(R.id.textview_backDistance);
    textview_backDistance.setTextColor(Color.WHITE);
    textview_leftDistance = (TextView) findViewById(R.id.textview_leftDistance);
    textview_leftDistance.setTextColor(Color.WHITE);
    textview_rightDistance = (TextView) findViewById(R.id.textview_rightDistance);
    textview_rightDistance.setTextColor(Color.WHITE);
    textview_speed = (TextView) findViewById(R.id.textview_speed);
    textview_speed.setTextColor(Color.WHITE);

    //Update the TextViews for distances every 500ms 
    Timer updateTimer = new Timer("sensorUpdate");
    updateTimer.scheduleAtFixedRate(new TimerTask() {
      public void run() {
        updateUI();
      }
    }, 0, 200);

        Canvas canvas = new Canvas();
        Paint paint = new Paint();
        paint.setColor(Color.WHITE);

        canvas.drawRect(50,50,50,50,paint);

    }
  
  public void send(String order){
    orders = new Thread(new WifiSender(order, this));
    orders.start();
  }
  
  /**
   * Updates the UI so that the proper distance is shown
   */
  public void updateUI()
  {  
    runOnUiThread(new Runnable() {
      @Override
      public void run() {
        ControlActivity.textview_frontDistance.invalidate();
        ControlActivity.textview_backDistance.invalidate();
        ControlActivity.textview_leftDistance.invalidate();
        ControlActivity.textview_rightDistance.invalidate();
      }
    });
  }
  
  /**
   * Sets the TouchListeners which handle events of the Buttons
   */
  public void setButtonListeners() {
    // Forward Button
    Button btnForward = (Button) findViewById(R.id.btnForward);
    btnForward.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
          Log.d("forward button", "forward pressed");
          ControlActivity.pressed = true;
          send("f");
        }
        if (event.getAction() == MotionEvent.ACTION_UP) {
          ControlActivity.pressed = false;
        }
        return true;
      }
    });

    // Backward Button
    Button btnBackward = (Button) findViewById(R.id.btnBackward);
    btnBackward.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
          Log.d("backward button", "backward pressed");
          ControlActivity.pressed = true;
          send("b");
        }
        if (event.getAction() == MotionEvent.ACTION_UP) {
          ControlActivity.pressed = false;
        }
        return true;
      }
    });
    
    // Left Button
    Button btnLeft = (Button) findViewById(R.id.btnLeft);
    btnLeft.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
          Log.d("left button", "left pressed");
          ControlActivity.pressed=true;
          send("l");
        }
        if (event.getAction() == MotionEvent.ACTION_UP) {
          ControlActivity.pressed=false;
        }
        return true;
      }
    });
    
    // Right Button
    Button btnRight = (Button) findViewById(R.id.btnRight);
    btnRight.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
          Log.d("right button", "right pressed");
          ControlActivity.pressed=true;
          send("r");
        }
        if (event.getAction() == MotionEvent.ACTION_UP) {
          ControlActivity.pressed=false;
        }
        return true;
      }
    });
    
    //Stop Button
    Button btnStop = (Button) findViewById(R.id.btnStop);
    btnStop.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
          Log.d("stop button", "stop pressed");
          ControlActivity.pressed = true;
          send("s");
        }
        if (event.getAction() == MotionEvent.ACTION_UP) {
          ControlActivity.pressed = false;
        }
        return true;
      }
    });

    Button btnPark = (Button) findViewById(R.id.btnPark);
    btnPark.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
          Log.d("park button", "park pressed");
          ControlActivity.pressed = true;
          send("p");
        }
        if (event.getAction() == MotionEvent.ACTION_UP) {
          ControlActivity.pressed = false;
        }
        return true;
      }
    });
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.control, menu);
    return true;
  }
}

Java Source Code List

• Back to App/control  ↑