I get response from server and I want to save these images url in an array .and show one image at a time after ten seconds image change

Question

For example I get three images in response from a web service and I want to show one image at a time in screen ..After every ten seconds image should change itself....how this can be done?

Answer 1

The code under the run(){} method will repeat after a interval of time mentioned.

// make global variables
 int 1=0;
 private Handler handler;
 Timer timer;
 Runnable mUpdateResults;


// Declare ArrayList of type Bitmaps
 final ArrayList<Bitmap> images = new  ArrayList<Bitmap>();

// get the images from drawable folder and convert it into bitmaps plus add them in arrayList
    images.add(BitmapFactory.decodeResource(this.getResources(),R.drawable.ic_launcher));
    images.add(BitmapFactory.decodeResource(this.getResources(),  R.drawable.one));
    images.add(BitmapFactory.decodeResource(this.getResources(), R.drawable.two));

// get the imageview
   final ImageView a = (ImageView)findViewById(R.id.imageView1);

    timer = new Timer();
    handler = new Handler();
    mUpdateResults = new Runnable() {
        public void run() {
       // checking if i==0 so set first image.. similarly so on
       if(i == 0)
        {
            a.setImageBitmap(images.get(0));
        }
         if(i ==1)
        {
             a.setImageBitmap(images.get(1));
        }// .. add more if you like
         i++;
        }
      }
    };
    int delay = 1000 ; // you can adjust it according to your need
    int period = 8000; // you can adjust it according to your need


    // execute timer

    timer.scheduleAtFixedRate(new TimerTask() {
    public void run(){handler.post(mUpdateResults); }}, delay, period);

for stopping the timer

     handler.removeCallbacksAndMessages(mUpdateResults);
             timer.cancel();

here

delay--This is the delay in milliseconds before task is to be executed.

period--This is the time in milliseconds between successive task executions.