Services - Zahraa

mainActivity
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package com.example.zahra.lightpolice;

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

public class MainActivity extends AppCompatActivity {
    Activity activity;
    BoundedService boundedService;
    Button start_btn, stop_btn;

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

    private void setPointer() {
        activity = this;
        start_btn = (Button) findViewById(R.id.start);
        stop_btn = (Button) findViewById(R.id.stop);

    }

    ServiceConnection serviceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            //cast the IBinder and get service instance
            MyBinder binder = ((MyBinder) service);
            boundedService = binder.myBinder;
            boundedService.policeLight(activity);

        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            boundedService.isOn = false;
        }
    };

    // strat & bind to Bounded Service
    public void startPoliceLight(View view) {
        super.onStart();
        Intent myIntent = new Intent(this, BoundedService.class);
        bindService(myIntent, serviceConnection, Context.BIND_AUTO_CREATE);

    }

    // stop & unbind service
    public void stopPoliceLight(View view) {
        boundedService.isOn = false;
        unbindService(serviceConnection);
        super.onStop();

    }

}
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myBinder
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package com.example.zahra.lightpolice;

import android.os.Binder;

/**
 * Created by zahra on 11/12/2017.
 */

public class MyBinder extends Binder {

  public BoundedService myBinder ;
}

======================================================
service
======================================================
package com.example.zahra.lightpolice;

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;

/**
 * Created by zahra on 11/12/2017.
 */

public class BoundedService extends Service{
    Activity activity;
    LinearLayout redColor, blueColor;
    Runnable light1, light2, light3;
    final int SLEEP = 300;
    protected Boolean isOn = false;


    @Nullable
    @Override
    public IBinder onBind(Intent intent) { //Using methods of IBinder Class
        Toast.makeText(this, "Service Was bounded", Toast.LENGTH_SHORT).show();
        MyBinder binder = new MyBinder();
        binder.myBinder = this;
        isOn = true;
        return binder;
    }

    @Override
    public boolean onUnbind(Intent intent) {
        Toast.makeText(this, " unbound service", Toast.LENGTH_LONG).show();
        return super.onUnbind(intent);

    }

    public void policeLight(final Activity activity) {
        this.activity = activity;
        redColor = activity.findViewById(R.id.red_layout);
        blueColor = activity.findViewById(R.id.blue_Layout);


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

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

                    try {
                        activity.runOnUiThread(light1);
                        Thread.sleep(SLEEP);
                        activity.runOnUiThread(light2);
                        Thread.sleep(SLEEP);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();

    }
}
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xml
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">

    <LinearLayout
        android:layout_width="123dp"
        android:layout_height="match_parent"
        android:layout_marginBottom="400dp"
        android:orientation="vertical">

        <Button
            android:id="@+id/stop"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="stopPoliceLight"
            android:text="Stop" />

        <Button
            android:id="@+id/start"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="startPoliceLight"
            android:text="Start" />
    </LinearLayout>
    <LinearLayout
        android:id="@+id/red_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="100dp"
        android:layout_weight="1"
        android:orientation="horizontal"></LinearLayout>

    <LinearLayout
        android:id="@+id/blue_Layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="100dp"
        android:layout_weight="1"
        android:orientation="horizontal">

    </LinearLayout>
</LinearLayout>

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