Question

I have two classes one of them that I pass to sends two parameters which are
1- file URL
2- file name
because I dont want to create this class for every file I have

first class passes the parameters from OnItemClickListener

     list.setOnItemClickListener(new ListView.OnItemClickListener() {
         public void onItemClick(AdapterView<?> parent, View view,
                  int position, long id) {
                if (position == 0) {
                    // pass parameters file name & file url

                  }

the second class

public void onClick(View v) {
            // starting new Async Task
            new DownloadFileFromURL().execute(file_url);
        }
OutputStream output=new FileOutputStream(new File(dir, filename));

Answer 1

You can do this by following code :

first class passes the parameters from OnItemClickListener

     list.setOnItemClickListener(new ListView.OnItemClickListener() {
         public void onItemClick(AdapterView<?> parent, View view,
                  int position, long id) {
                if (position == 0) {
                    // pass parameters file name & file url
                    Intent i = new Intent(FirstClass.this,SecondClass.this);
                    i.putExtra("FileName",fileName);
                    i.putExtra("FileURL",fileURL);
                    startActivity(i);

                  }

the second class

public void onClick(View v) {
                    filename = getIntent().getStringExtra("fileName"); 
                    file_url = getIntent().getStringExtra("fileURL");
            // starting new Async Task
            new DownloadFileFromURL().execute(file_url);
        }
OutputStream output=new FileOutputStream(new File(dir, filename));