Issue
I have been trying to download videos from a url, I have implemented my downloading method in the doInBackground() of asynctask, but the doInBackground method is taking a lot of time to get called(5-10 mins), I am using another asyntask to download image in the activity from which I am directed to download video activity and its working fine. My onPreExecute method is being called on time, but after that doInBackground takes almost 5-7 minutes to start. I will be really grateful for any help provided. Here is mycode
btnDownloadLQ.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0)
{
try
{
new DownloadVideoTask().execute(videoURL);
}
catch(Exception e)
{
Log.e("Vidit_TAG","I got an error",e);
}
}
});
private class DownloadVideoTask extends AsyncTask<String, String, String>
{
@SuppressWarnings("deprecation")
@Override
protected void onPreExecute() {
super.onPreExecute();
showDialog(DIALOG_DOWNLOAD_PROGRESS);
}
protected String doInBackground(String... urls)
{
int i=0;
try
{
URL url = new URL (urls[0]);
InputStream input = url.openStream();
try {
//The sdcard directory e.g. '/sdcard' can be used directly, or
//more safely abstracted with getExternalStorageDirectory()
String root = Environment.getExternalStorageDirectory().toString();
File storagePath = new File(root + "/vidit");
storagePath.mkdirs();
OutputStream output = new FileOutputStream (new File(storagePath,title+".mp4"));
try
{
byte[] buffer = new byte[1024];
int bytesRead = 0;
while ((bytesRead = input.read(buffer, 0, buffer.length)) >= 0)
{
output.write(buffer, 0, bytesRead);
}
}
catch(Exception e)
{
Log.e("Vidit_TAG","I got an error",e);
}
finally
{
output.close();
}
}
catch(Exception e)
{
Log.e("Vidit_TAG","I got an error",e);
}
finally
{
input.close();
//tvTitle.setText("Completed");
}
}
catch(Exception e)
{
Log.e("Vidit_TAG","I got an error",e);
}
return null;
}
@SuppressWarnings("deprecation")
@Override
protected void onPostExecute(String unused)
{
dismissDialog(DIALOG_DOWNLOAD_PROGRESS);
alertbox(title);
}
}
Solution
make sure no other asyncTasks are running , by cancelling them if needed.
on most android versions , asyncTask runs on a single background thread , and should only run small tasks .
in case the task might take too long (or there are multiple tasks) , consider cancelling them or use an alternative approach (like using executeOnExecutor as described on the API ) .
Answered By - android developer
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