AsynkTask's mission, but how does it open up a picture upload?

[Saumya]

Here's the code.

public class PromoProductsActivity extends AppCompatActivity {
private static final String ServletURL = "здесь адрес сервера";
@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_promo_products);
// получаем Intent и название магазина, которое он хранит
Intent intent = getIntent();
String shopName = intent.getStringExtra("shopName");

new ServletTask().execute(shopName);

}
private class ServletTask extends AsyncTask<String, Void, List<Product>>{
@Override
protected List&lt;Product&gt; doInBackground(String... params) {
    //String shopName = params[0];
    String shopName = "all";
    List&lt;Product&gt; productList = new ArrayList&lt;&gt;();
    try {
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(ServletURL +shopName);

        HttpResponse httpResponse = httpClient.execute(httpGet);
        HttpEntity httpEntity = httpResponse.getEntity();
        String outputString = EntityUtils.toString(httpEntity);
        JSONArray output = new JSONArray(outputString);
        for (int i = 0; i &lt; output.length(); i++) {
            try {
                JSONObject object = (JSONObject) output.get(i);
                Product product = new Product(object.getString("productName"), object.getString("newPrice"),
                        object.getString("startPromo"), object.getString("endPromo"), object.getString("urlPhoto"));
                productList.add(product);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    } catch (JSONException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return productList;
}

@Override
protected void onPostExecute(List&lt;Product&gt; productList) {
    LinearLayout itemLayout = (LinearLayout) findViewById(R.id.itemLayout);
    LayoutInflater inflater = getLayoutInflater();

    for (Product p : productList){
        View item = inflater.inflate(R.layout.item, itemLayout, false);
        // поле с названием продукта
        TextView product_name_tv = (TextView) item.findViewById(R.id.product_name_tv);
        product_name_tv.setText(p.getProductName());
        // поле с новой ценой продукта
        TextView new_price_tv = (TextView) item.findViewById(R.id.new_price_tv);
        new_price_tv.setText(p.getNewPrice());
        // поле с датой начала акции
        TextView start_promo_tv = (TextView) item.findViewById(R.id.start_promo_tv);
        start_promo_tv.setText(p.getProductName());
        // поле с датой конца акции
        TextView end_promo_tv = (TextView) item.findViewById(R.id.end_promo_tv);
        end_promo_tv.setText(p.getProductName());
        // поле с картинкой товара
        ImageView product_photo = (ImageView) item.findViewById(R.id.product_photo);
        try {
            product_photo.setImageBitmap(BitmapFactory.decodeStream(new URL(p.getUrlPhoto()).openConnection().getInputStream()));
        } catch (IOException e) {
            e.printStackTrace();
        }

        // устанавливаем размеры каждого пункта с товаром и отображаем на экране
        item.getLayoutParams().width = ViewGroup.LayoutParams.MATCH_PARENT;
        itemLayout.addView(item);
    }
}

}

♪

In this case, receive the NetworkOnMainThreadException, which means another flow?
If I write from the lamp

product_photo.setImageURI(Uri.parse(p.getUrlPhoto()));

It's kind of working, but instead of a picture of the crabs. The glass says it can't decode the picture.
Can you tell me how to download the ImageView picture?

[rielyn]

Method onPostExecute mainly (UI) flow. We'll sit back when you're online.

product_photo.setImageBitmap(BitmapFactory.decodeStream(new URL(p.getUrlPhoto()).openConnection().getInputStream()));

You're right. NetworkOnMainThreadException♪

If you need to look at it. ImageView You have two options:

1. One more challenge, too, doInBackground I need you to download the picture to make her. ImageView Total onPostExecute♪ That's it. bad A way.

2. Using one of the libraries for purposes. For example https://github.com/nostra13/Android-Universal-Image-Loader :

   ImageLoader imageLoader = ImageLoader.getInstance();
   imageLoader.displayImage(imageUri, imageView);
   

This and similar libraries will take care of the flow, asynchronity and other. And they'll cut the code once.