Issue
I am trying to download some files in background, for that I used download manager and I made this method:
/*** media download ***/
public long mediaDownload(ArrayList<DownloadedFile> arrayList, String foldPathName) {
long downloadReference = 0;
// Create request for android download manager
downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
for (int i = 0; i < arrayList.size();i++){
DownloadManager.Request request = new DownloadManager.Request(arrayList.get(i).getUri());
request.setTitle("Data Download");
request.setDescription("New media");
//Set the local destination for the downloaded file to a path
//within the application's external files directory
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS + "/" + folder_main + "/" + foldPathName, arrayList.get(i).getName());
File f = new File(Environment.DIRECTORY_DOWNLOADS + "/" + folder_main + "/" + foldPathName + "/" + arrayList.get(i).getName());
Log.e("File:",f.toString());
//Enqueue download and save into referenceId
downloadReference = downloadManager.enqueue(request);
}
return downloadReference;
}
I have a picture and a Video to download for test, and when checking downloaded file in Explorer I find 2 videos and 2 picture, debug that I found that onPostExecute method is called twice and I can't figure out why.
Here is my onPostExecute method:
protected void onPostExecute(String s) {
try {
JSONObject jsonObject = new JSONObject(s);
JSONArray region = null;
region = jsonObject.getJSONArray("regions");
Log.e("Regions:", String.valueOf(region.length()));
for (int i = 0; i < region.length(); i++) {
try {
JSONObject json_data = region.getJSONObject(i);
int height_view = Integer.parseInt(json_data.getString("height"));
int width_view = Integer.parseInt(json_data.getString("width"));
int left_view = Integer.parseInt(json_data.getString("left"));
int top_view = Integer.parseInt(json_data.getString("top"));
int right_view = Integer.parseInt(json_data.getString("right"));
int bottom_view = Integer.parseInt(json_data.getString("bottom"));
/**** Media in region ***/
JSONObject media = json_data.getJSONObject("media");
String type_media = media.getString("type");
url = media.getString("url");
name = media.getString("name");
uri = Uri.parse(url);
} catch (JSONException e) {
e.printStackTrace();
}
downloadedFiles.add(new DownloadedFile(name, uri));
}
Toast.makeText(MainActivity.this, "Layout Created with" + height + "x" + width, Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
Log.e("Downloaded Files:",downloadedFiles.toString());
mediaDownload(downloadedFiles, folderName); // region media's download
}
On my logcat I see that my arrayList has 2 elements, but displayed twice, which means files are downloaded twice so the onPostExecute method called 2 times, thanks for help.
Solution
I figured out after passing my time debugging all the code, when the activity is created it changes the screen orientation and so it creates a second instance, so my AsyncTask is called twice and thats why i thought onPosteExecute is called twice, thanks for everyone who tried to help.
Answered By - Laidi Oussama
0 comments:
Post a Comment
Note: Only a member of this blog may post a comment.