problem with AsyncTask thread

I'm reading some data from a DB in an AsyncTask thread.... in this way:

    prot开发者_如何学Goected Void doInBackground(DBAdapter... db) {

        try {

            db[0].openDataBase();

            Cursor c = db[0].getCursor3(db[0].TABLE_3, user_id);

            float[] viteza = new float[c.getCount()];

            String[] time = new String[c.getCount()];

            if (c.moveToFirst()) {

                do {

                    viteza[i] = Float.parseFloat(c.getString(3));
                    time[i] = c.getString(4);


                    publishProgress(????);

                    Thread.sleep(2500);

                    i++;
                } while (c.moveToNext());

            }
            c.close();
            db[0].close();

        } catch (Exception e) {
            Log.d("Eroare", "doInBackground", e);
        }

        return null;
    }

My problem is that each time I get a new value for viteza[i] and time[i] I have to send them to

protected void onProgressUpdate(....?) {

}

both at the same time....but I don't know how to do that cause publishProgress() can take only one parameter!!!!

Can someone help me with this?Thx

---

The following should work assuming you've got the data values in right order (getString(3) should be a number and getString(4) should be a time value).

protected Void doInBackground(DBAdapter... db) {
    // ... some db work
    if (c.moveToFirst()) {
        publishProgress(c.getString(3), c.getString(4));
        // ...
    }
}

protected void onProgressUpdate(String... values) {
    float viteza = Float.parseFloat(values[0]);
    String time = values[1];
    // do something with the data that shows in UI
}

A full AsyncTask to test passing values is here:

private class SimpleTask extends AsyncTask<Void, String, Void> {

    @Override
    protected Void doInBackground(Void... params) {
        String floatAsString = "3.14159265358979";
        String timeAsString = "06-01 07:32:02.579";
        publishProgress(floatAsString, timeAsString);
        return null;
    }

    @Override
    protected void onProgressUpdate(String... values) {
        float pi = Float.parseFloat(values[0]);
        Log.i("SimpleTask", String.format("Got values '%s' and '%s'. pi = %f", values[0], values[1], pi));
    }

}

which prints the output:

Got values '3.14159265358979' and '06-01 07:32:02.579'. pi = 3.141593

---

You could leave them both String and pass an array of String[] to publishProgress(), maintaining the same order, and then convert viteza[i]'s value to a float in publishProgress(). You could also put them into a super simple class and pass the object if you don't want to worry about the array order, but I would go with the array for something this small.

public class HelloAndroid extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    MyAsyncTask myTask = new MyAsyncTask();
    myTask.execute();
}

private class MyAsyncTask extends AsyncTask<Void, String, Void> {

    @Override
    protected Void doInBackground(Void... arg0) {
        // TODO Auto-generated method stub
        String[] first = {"1", "2", "3", "4", "5"};
        String[] second = {"5", "4", "3", "2", "1"};

        for(int i = 0; i < first.length; i++) {
                            //put together a string array with our values in the desired order
            String[] vals = {first[i], second[i]};
                            //publishProgress is what is used to call onProgressUpdate()
            publishProgress(vals);
        }
        return null;
    }

    @Override
    protected void onProgressUpdate(String...strings ) {

                    //Strings are now in strings[0] and strings[1] in the order
                    //that they were put into vals array in doInBackground()
        String passedValues = strings[0] + "," + strings[1];

                    //Do whatever UI updates.
        TextView mytext = (TextView)findViewById(R.id.mytext);
        mytext.setText(passedValues);
    }

}

}

---

Consider a custom object that wraps the two values and pass this object as Progress as in:

private class MyAsynch extends AsyncTask<Void,MyObject,Void>{

JAL