This document defines an AsyncTask class that executes work asynchronously on a background thread. The AsyncTask takes a double as a parameter, does not update progress, and returns a string. It overrides methods like doInBackground to run work on a background thread, onProgressUpdate to handle progress updates, and onPostExecute to run after work is completed.

1. //calling the thread...
...
double data = 0;
new EjemploAsyncTask().execute(data);
...
public class EjemploAsyncTask extends AsyncTask<Double,Integer,String>{ //-----
Thread to execute in background
/* <to-bacground,to_update, from-background >
1st parameter: to-backround is the data type which
is gonnna enter in doInBackground
2nd parameter: to-update is the data type which is
gonna be passed form publishprogress in
doInbackground to on ProgressUpdate
3th parameter: from-background is the data type
which returns doInbackground
and is pased to onPostExecute and
onCancelled
*/
@Override
protected void onPreExecute() { //----- Things to do before execyte
super.onPreExecute();
}
@Override
protected String doInBackground(Double... params) { //---- Thing to do
in background
//Here we can use publish progress to comunicate with update
int x=0 ;
double z= params[0];
publishProgress(x); //----call update and pass the data Integer
return null;
}
@Override
protected void onProgressUpdate(Integer... values) {
// This is executed when publish progress is call
super.onProgressUpdate(values);
//example: progressbar.setProgress(values[0].intValue);
}
@Override
protected void onPostExecute(String s) { //--------------- After
finish of execute
super.onPostExecute(s);
}
@Override
protected void onCancelled(String s) { //-------- When the thread is
cancelled
super.onCancelled(s);
}

2. }