Load 10 image on first page

Question

I use this method to load 10 image on first page but i have one problem. first image takes a lot of time to load. After first image other image loading fast. I don`t know why?

calling method new DownloadImageTask((ImageView) findViewById(R.id.imageView_bb1).execute(db.getURLimgMahsol(id_bb2));

loadImage method

private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
        ImageView bmImage;

        public DownloadImageTask(ImageView bmImage) {
            this.bmImage = bmImage;

        }

        protected Bitmap doInBackground(String... urls) {
            String urldisplay = urls[0];
            Bitmap mIcon11 = null;
            try {
                InputStream in = new java.net.URL(urldisplay).openStream();
                mIcon11 = BitmapFactory.decodeStream(in);
            } catch (Exception e) {
                Log.e("Error", e.getMessage());
                e.printStackTrace();
            }
            return mIcon11;
        }

        protected void onPostExecute(Bitmap result) {
            bmImage.setImageBitmap(result);
        }
    }

score 1 · Answer 1 · answered Mar 31 '16 at 14:19

1

Use Glide, Picasso or some other image loader. Also it's not good practice to hold reference on UI element in AsyncTask, or to have private inner AsyncTask class. You can see here why.

answered Mar 31 '16 at 14:19

Vladimir Jovanović

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Gueorgui Obregon · Answer 2 · 2016-04-01T14:08:00.760

1

Check that you call DownloadImageTask with execute() and not with get(). Executing get() will block your UI until the task is finished.

Please DON'T reinvent the wheel! There is many good library to handle efficiently loading an image from url.

Hope this helps!!

edited Apr 01 '16 at 14:08

answered Mar 31 '16 at 14:39

Gueorgui Obregon

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score -1 · Answer 3 · edited May 23 '17 at 11:50

-1

Probably you start 10 AsyncTask's one by one, so UI gets freeze.
You should make queue: start first AsyncTask -> onPostExecute start second and so on.

I suggest you to use Glide.
Here is the discussion about Glide and other ImageLoaders.

edited May 23 '17 at 11:50

Community

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1

answered Mar 31 '16 at 14:11

Volodymyr Kulyk

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Tnx for your answer I read Glide but I don`t know how i can using this should i have import ? – Sobhan Moradi Mar 31 '16 at 14:22
@SobhanMoradi so you don't know how to use Gradle dependencies in Android Studio? Google will help you! – Volodymyr Kulyk Mar 31 '16 at 14:27
AsyncTasks always run on one thread, so no matter how many you run at one they will run one after other. – Vladimir Jovanović Apr 01 '16 at 11:56

Load 10 image on first page

3 Answers3