Question

why my imageview is not updating in the for loop,only the image from last url is showing in the imageview not all the images,what i am doing wrong?

public class LoadImageActivity extends Activity {
    ImageView image_view;
    Bitmap bitmap;

    String[] imageLocation={
            "http://wallbase1.org/thumbs/rozne/thumb-499842.jpg",
            "http://ns3002439.ovh.net/thumbs/rozne/thumb-2493796.jpg",
            "http://ns3002439.ovh.net/thumbs/rozne/thumb-2486664.jpg" };  

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        image_view = (ImageView)findViewById(R.id.imageview);

        for (int i = 0; i < 2; i++) {
            bitmap = loadImage(imageLocation[i]);
            image_view.setImageBitmap(bitmap);

            Animation rotate = AnimationUtils.loadAnimation(LoadImageActivity.this, R.anim.rotate);
            findViewById(R.id.imageview).startAnimation(rotate);
        }
    }

    public  Bitmap loadImage(String image_location){
        URL imageURL = null;
        try {
            imageURL = new URL(image_location);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }

        try {
            HttpURLConnection connection = HttpURLConnection)imageURL.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream inputStream = connection.getInputStream();

            bitmap = BitmapFactory.decodeStream(inputStream);//Convert to bitmap
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bitmap;
    }
}

Answer 1

Well, at first, how slow is you device that you would switch between images in two successing lines of code (effectively)?

Secondly, the system has to be layouted first which happens after onCreate() returns. What you did is:

-set reference to bitmap that will be shown when layouted
-changed that reference
-let the system do the layout (Question: Which reference will be read?)

It looks like you want to set the first bitmap, rotate it and then set the other bitmap.
What you need to do is:

-set bitmap
-start animation with an Animation.AnimationListener, which sets the second bitmap in onAnimationEnd().

@Thanks to Adam!