chakalaka

package com.example.teacher.myapplication;

import android.content.Context;
import android.graphics.Color;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    LinearLayout blub1, blub2;
    Context context;
    boolean isRunning = true;
    Runnable l1,l2;

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

        try {
            runFirstPolice();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    private void runFirstPolice() throws InterruptedException {

        new Thread(new Runnable()
        {
            @Override
            public void run()
            {
                while(isRunning)
                {
                    runOnUiThread(l1);
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    runOnUiThread(l2);

                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();

    }



    private void setPointer() {
        blub1 = (LinearLayout) findViewById(R.id.blub1);
        blub2 = (LinearLayout) findViewById(R.id.blub2);
        l1 = new Runnable() {
            @Override
            public void run() {
                blub1.setBackgroundColor(Color.RED);
                blub2.setBackgroundColor(Color.BLUE);
            }
        };
        l2 = new Runnable() {
            @Override
            public void run() {
                blub1.setBackgroundColor(Color.BLUE);
                blub2.setBackgroundColor(Color.RED);
            }
        };
    }
}