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POAndroid: showing default image in gallery's ImageView while actual image is downloaded
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  1. POAndroid: showing default image in gallery's ImageView while actual image is downloaded
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    copied!<p>I believe this is pretty trivial but I can't get it to work.<br> I want to display a default image in gallery elements (ImageViews) while their actual image is being fetched from the net.<br> Right now, nothing is shown for an ImageView which its image has yet to arrive. Once it arrives it is immediately shown.<br> What I tried is right after the instantiation of the ImageView to call its setImageResource function like so: </p> <p>final ImageView i = new ImageView(mContext);<br> i.setImageResource(R.drawable.loading);</p> <p>But it doesn't seem to work. Below is the full getView() function.<br> Any help is appreciated.<br> Thanks.</p> <pre><code>public View getView(int position, View convertView, ViewGroup parent) { final ImageView i = new ImageView(mContext); i.setImageResource(R.drawable.loading); // if the drawbale is in the buffer - fetch it from there Drawable bufferedImage = DataManager.getInstance().getImagesBuffer()[position]; if (bufferedImage != null){ i.setImageDrawable(bufferedImage); BitmapDrawable drawable = (BitmapDrawable) i.getDrawable(); drawable.setAntiAlias(true); } // if drawable is not in buffer - fetch it from the net via AsyncImageLoader else { String imageUrl = DataManager.getInstance().getImageBufferInstance().getImageUrl(position); Drawable downloadedImage = AsyncImageLoader.getInstance().loadDrawable(imageUrl, new ImageCallback() { public void imageLoaded(Drawable imageDrawable, String imageUrl) { if (imageDrawable == null) { imageDrawable = getResources().getDrawable(R.drawable.icon); } i.setImageDrawable(imageDrawable); BitmapDrawable drawable = (BitmapDrawable) i.getDrawable(); drawable.setAntiAlias(true); } }); i.setImageDrawable(downloadedImage); } i.setLayoutParams(new CoverFlow.LayoutParams(Utils.getInstance().getScreenWidth() / 2, Utils.getInstance().getScreenHeight() / 2)); i.setScaleType(ImageView.ScaleType.CENTER_INSIDE); return i; } </code></pre>
 

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