Chackalaka

MainActivity
==================
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    Activity activity; // set activity
    BoundedService boundedService; // set BoundedService class
    Button button,off_btn; // set buttons

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

    private void setPointer() {
        activity = this;
        button = (Button) findViewById(R.id.on_button);
        off_btn = (Button)findViewById(R.id.off_btn);

    }

    // this method to start the onBind method and start the service
    public void startMe(View view)
    {
        Intent myIntent = new Intent(this, BoundedService.class);
        bindService(myIntent, serviceConnection, Context.BIND_AUTO_CREATE);
    }
    // This method to start the onUnbind and stop the Service
    public void stopMe(View view)
    {
        boundedService.isRun = false;
        unbindService(serviceConnection);

    }

    ServiceConnection serviceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {

            MyBinder ourBinder = ((MyBinder) service);
            boundedService = ourBinder.binderService;
            boundedService.policeSirinna(activity);

        }

        @Override
        public void onServiceDisconnected(ComponentName name) {

        }
    };
}



BoundedService
=========================
import android.app.Activity;
import android.app.Service;
import android.content.Intent;
import android.graphics.Color;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.widget.LinearLayout;
import android.widget.Toast;



public class BoundedService extends Service {


    protected Boolean isRun = false;  // Boolean for Chacalaka methods
    Runnable light1, light2,light3;
    final int SLEEP = 200;
    LinearLayout red_color, blue_color;
    Activity activity;


    @Nullable
    @Override //  Method to start the service
    public IBinder onBind(Intent intent)
    {
        Toast.makeText(this, "Service Was bounded", Toast.LENGTH_SHORT).show();
        MyBinder binder = new MyBinder();
        binder.binderService = this;
        isRun = true;
        return binder;
    }

    @Override // Method to stop the service
    public boolean onUnbind(Intent intent) {
        Toast.makeText(this, "Un Bind!\n stop", Toast.LENGTH_LONG).show();
        return super.onUnbind(intent);

    }
    // method to set the chakalaca lights
    public void policeSirinna(final Activity activity) {
        this.activity = activity;
        red_color = (LinearLayout) activity.findViewById(R.id.red_color);
        blue_color = (LinearLayout) activity.findViewById(R.id.blue_color);


        light1 = new Runnable() {
            @Override
            public void run() {
                red_color.setBackgroundColor(Color.RED);
                blue_color.setBackgroundColor(Color.BLUE);
            }
        };
        light2 = new Runnable() {
            @Override
            public void run() {
                red_color.setBackgroundColor(Color.BLUE);
                blue_color.setBackgroundColor(Color.RED);
            }
        };
        light3 = new Runnable() {
            @Override
            public void run() {
                red_color.setBackgroundColor(Color.WHITE);
                blue_color.setBackgroundColor(Color.WHITE);
            }
        };

        new Thread(new Runnable() {
            @Override
            public void run() {
                while (isRun) {

                    try {
                        activity.runOnUiThread(light1);
                        Thread.sleep(100);

                        activity.runOnUiThread(light1);
                        Thread.sleep(100);

                        activity.runOnUiThread(light1);
                        Thread.sleep(100);

                        activity.runOnUiThread(light2);
                        Thread.sleep(100);

                        activity.runOnUiThread(light2);
                        Thread.sleep(100);

                        activity.runOnUiThread(light2);
                        Thread.sleep(100);

                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();

    }

}




MyBinder
=======================
import android.os.Binder;

public class MyBinder extends Binder {

    public BoundedService binderService;

}



activity_main.xml
==========================
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/polic_btn"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">


    <Button
        android:id="@+id/on_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="15dp"
        android:layout_marginTop="28dp"
        android:text="On"
        android:onClick="startMe"
        />

    <LinearLayout
        android:id="@+id/red_color"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:layout_alignTop="@+id/on_button"
        android:layout_marginStart="28dp"
        android:layout_toEndOf="@+id/on_button"
        android:orientation="horizontal"></LinearLayout>

    <LinearLayout
        android:id="@+id/blue_color"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:layout_alignTop="@+id/red_color"
        android:layout_marginStart="36dp"
        android:layout_toEndOf="@+id/red_color"
        android:orientation="horizontal"></LinearLayout>

    <Button
        android:id="@+id/off_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignStart="@+id/on_button"
        android:layout_below="@+id/on_button"
        android:text="Off"
        android:onClick="stopMe"/>


</RelativeLayout>