Поместите это в onCreate()
ImageView imageView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.order);
imageView = (ImageView)findViewById(R.id.imgView);
new DownloadFilesTask().execute();
}
И ваш класс AsyncTask
должен быть таким,
private class DownloadFilesTask extends AsyncTask<Void, Void, Void> {
Drawable drawable;
@Override
protected Void doInBackground(Void... params) {
drawable = createDrawableFromURL(
"http://savagelook.com/misc/sl_drop2.png");
return null;
}
protected void onPostExecute(Void result) {
imageView.setImageDrawable(drawable);
}
}