UI Block on creating imageview at runtime

Question

I want to create 600 imageview at runtime and add it to linear layout at runtime.It cause block my user interface. My activity appear when all imageview created and added to linear layout. How to resolve this.

Please help for this.

       for(int index = 0; index < ProductItemArray.Image_URL.length; index++)
        {
            ImageView bottomImageView = new ImageView(context);
            bottomImageView.setTag(index);

            if(Helper.isTablet(context))
                bottomImageView.setLayoutParams(new Gallery.LayoutParams(VirtualMirrorActivity.convertDpToPixel(100, context), VirtualMirrorActivity.convertDpToPixel(100, context)));
            else
                bottomImageView.setLayoutParams(new Gallery.LayoutParams(VirtualMirrorActivity.convertDpToPixel(80, context), VirtualMirrorActivity.convertDpToPixel(80, context)));

            UrlImageViewHelper.setUrlDrawable(bottomImageView, ProductItemArray.Image_URL[index]);
            bottomImageView.setBackgroundResource(R.layout.border);
            linearLayout3.addView(bottomImageView);
            bottomImageView.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    final int position = (Integer) v.getTag();
                    linearLayout.removeAllViews();
                    Thread newThread = new Thread(new Runnable() {
                        public void run() {
                            isAlreadyExistInWishlist = true;
                            URL url_1 = null;
                            try {
                                VMProductListPaging.productUrl = ProductItemArray.Image_small_URL[position];
                                VMProductListPaging.productId = ProductItemArray.productId[position];
                                VMProductListPaging.productName = ProductItemArray.product_Name[position];

                                url_1 = new URL(ProductItemArray.Image_small_URL[position]);
                                bmp = BitmapFactory.decodeStream(url_1.openConnection().getInputStream());
                                isExecuted = true;
                                bitmapModelsHandler.sendMessage(bitmapModelsHandler.obtainMessage());
                            }
                            catch (Exception e) {
                                //Toast.makeText(context,"Sorry!! This link appears to be broken",Toast.LENGTH_LONG).show();
                            }
                        }
                    });
                    newThread.start();
                }
            });
        }

600 `ImageViews` at one moment? If yes this will not works as you're creating to many views. — user, Nov 20 '12 at 08:18
you should use lazy load to show images. please refer this [URL](http://codehenge.net/blog/2011/06/android-development-tutorial-asynchronous-lazy-loading-and-caching-of-listview-images/) — Talha, Nov 20 '12 at 08:23
Look at this post, it is a good tuorial,i think it helps to you . http://androidtrainningcenter.blogspot.com/2012/04/how-to-create-simple-android-gallery.html — Talha, Nov 20 '12 at 08:38
@fiddler Really, if it is, what we will use instead of gallery ? — Talha, Nov 20 '12 at 08:47
They say "This widget is no longer supported. Other horizontally scrolling widgets include HorizontalScrollView and ViewPager from the support library." [here](http://developer.android.com/reference/android/widget/Gallery.html) — sdabet, Nov 20 '12 at 08:48
I see, thanks for your information, because of your info i give you 40 rep bounty :) — Talha, Nov 20 '12 at 08:50

score 4 · Accepted Answer · answered Nov 20 '12 at 08:18

4

Having 600 images in memory in the same time is probably not a good idea.

You should consider using some lazy loading via an adapter (with a ListView, a Gallery, a GridView, a Spinner,etc...) which will manage recycling/releasing of views.

answered Nov 20 '12 at 08:18

sdabet

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Spinner is like a dropdown list. ListView might be better suited for your case, no? – sdabet Nov 20 '12 at 08:23
i want these imageview in horizontal which one is best – Ajay S Nov 20 '12 at 08:23
Then you might want to use a HorizontalScrollView – sdabet Nov 20 '12 at 08:25
i am using like this – Ajay S Nov 20 '12 at 08:26
and add imageview in linearlayout at runtime – Ajay S Nov 20 '12 at 08:27
how can i add adapter on horizontal scrollview – Ajay S Nov 20 '12 at 08:27
Look at this: http://stackoverflow.com/questions/7763821/horizontalscrollview-and-adapter – sdabet Nov 20 '12 at 08:28
but in gallery i have a problem on click on imageview it places in center that is problem in that how to resolve this – Ajay S Nov 20 '12 at 08:30

UI Block on creating imageview at runtime

1 Answers1