Comment faire pour afficher l'image à partir de l'URL sur Android

J'ai essayé ce code fonctionne chez moi,obtenir de l'image directement à partir de l'url

      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);
      }
    }

utiliser à l'intérieur onCreate() la méthode

nouveau DownloadImageTask((ImageView) findViewById(R. id.image))
.execute("http://scoopak.com/wp-content/uploads/2013/06/free-hd-natural-wallpapers-download-for-pc.jpg");

Vous pouvez essayer de Picasso, c'est vraiment agréable et facile.
N'oubliez pas d'ajouter les autorisations dans le manifeste.

Picasso.with(context)
                     .load("http://ImageURL")
                     .resize(width,height)
                     .into(imageView );

Vous pouvez aussi jeter un oeil à un tutoriel ici :
Youtube /
Github

J'ai retenté une image à partir d'une URL et stockées sur ma carte SD en utilisant le code suivant:

public String Downloadfromurl(String Url)
{
String filepath=null;
try {
URL url = new URL(Url);
//create the new connection
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
//set up some things on the connection
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true); 
//and connect!
urlConnection.connect();
//set the path where we want to save the file
//in this case, going to save it on the root directory of the
//sd card.
folder = new File(Environment.getExternalStorageDirectory().toString()+"/img");
folder.mkdirs();
//create a new file, specifying the path, and the filename
//which we want to save the file as.
String filename= "page"+no+".PNG";   
file = new File(folder,filename);
if(file.createNewFile())
{
file.createNewFile();
}
//this will be used to write the downloaded data into the file we created
FileOutputStream fileOutput = new FileOutputStream(file);
//this will be used in reading the data from the internet
InputStream inputStream = urlConnection.getInputStream();
//this is the total size of the file
int totalSize = urlConnection.getContentLength();
//variable to store total downloaded bytes
int downloadedSize = 0;
//create a buffer...
byte[] buffer = new byte[1024];
int bufferLength = 0; //used to store a temporary size of the buffer
//now, read through the input buffer and write the contents to the file
while ( (bufferLength = inputStream.read(buffer)) > 0 ) {
//add the data in the buffer to the file in the file output stream (the file on the sd card
fileOutput.write(buffer, 0, bufferLength);
//add up the size so we know how much is downloaded
downloadedSize += bufferLength;
//this is where you would do something to report the prgress, like this maybe
Log.i("Progress:","downloadedSize:"+downloadedSize+"totalSize:"+ totalSize) ;
}
//close the output stream when done
fileOutput.close();
if(downloadedSize==totalSize)  
filepath=file.getPath();
//catch some possible errors...
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
filepath=null;
e.printStackTrace();
}
Log.i("filepath:"," "+filepath) ;
return filepath;
}

Écrire le code à l'aide de ASyncTask pour la gestion http.

Bitmap b;
ImageView img;
......
try
{
URL url = new URL("http://10.119.120.10:80/img.jpg");
InputStream is = new BufferedInputStream(url.openStream());
b = BitmapFactory.decodeStream(is);
} catch(Exception e){}
......
img.setImageBitmap(b);

Vous pouvez simplement utiliser l'API Glide. Il évite tout le code réutilisable et la tâche peut être réalisée en deux lignes de code. Vous consultez ce lien https://blog.mindorks.com/downloading-and-showing-image-with-glide-library-in-android. Profitez de