Question

I have two buttons in my sample application and I want to change the background image of the buttons one after another with 4-seconds delay, So far i have developed the code, you can see it below, but it gets sleep my application and display nothing.

Please somebody help me that I could do so.

   int m =0;
    int delay = 4;  //Seconds

    while(m < 4)
    {



     // int i = (int) (Math.random() * num + 1);

    if(m==0)
    {
        button1.postDelayed(new Runnable()
        {
            public void run()
            {
            // TODO Auto-generated method stub
            button1.setBackgroundResource(R.drawable.buttonyellow);
            m++;
            }
        }, 1000*delay);

    }


    else if(m==1)
    {
        button2.postDelayed(new Runnable()
        {
            public void run()
            {
                // TODO Auto-generated method stub
                button2.setBackgroundResource(R.drawable.buttonyellow);
                m++;
            }
        }, 1000*delay);

    }





    if(m==2)
    {
        button1.postDelayed(new Runnable()
        {
            public void run()
            {
            // TODO Auto-generated method stub
            button1.setBackgroundResource(R.drawable.buttonblue);
            m++;
            }
        }, 1000*delay);

    }


    else if(m==3)
    {
        button2.postDelayed(new Runnable()
        {
            public void run()
            {
                // TODO Auto-generated method stub
                button2.setBackgroundResource(R.drawable.buttonblue);
                m++;
            }
        }, 1000*delay);

    }



    }

Answer 1

int mark = 0; 

button2.postDelayed(new Runnable()
    {
        public void run()
        {
            switch(mark++){
                 case 0:button2.setBackgroundResource(R.drawable.buttonyellow); break;
                 case 1:button2.setBackgroundResource(R.drawable.buttongreen); break;
                 ..ect
            }
            if(mark==Max)mark=0;

         button2.postDelayed(this,4000);
        }
    }, 4000);

Note, this will go on till the end of time, or when your app stops.