How to display an image from an URL within textView

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野的像风
野的像风 2020-12-20 01:54

I have a textView. In my code I am adding some lines of text in it. I also want to display some image from an external URL (not from my resource folder) just in between thos

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  •  野趣味
    野趣味 (楼主)
    2020-12-20 02:25

    You are going to probably want to use an asynctask to grab the image. This will run in the background from your other tasks. Your code may look something like this:

        public class ImageDownloader extends AsyncTask{
    
        private String url;
        private final WeakReference imageViewReference;
    
        //a reference to your imageview that you are going to load the image to
        public ImageDownloader(ImageView imageView) {
            imageViewReference = new WeakReference(imageView);
        }
    
        @Override
        protected Bitmap doInBackground(String... arg0) {
            if(isCancelled())
                return null;
            Bitmap retVal;
    
            url = arg0[0];//this is the url for the desired image
            ...download your image here using httpclient or another networking protocol..
            return retVal;
        }
        @Override
        protected void onPostExecute(Bitmap result) {
            if (isCancelled()) {
                result = null;
                return;
            }
            ImageView imageView = imageViewReference.get();
            imageView.setImageBitmap(result);
        }
        @Override
        protected void onPreExecute() {
            ...do any preloading you might need, loading animation, etc...
        }
    

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