Android onitemclicklistener问题

Question

Dont know if I am even doing this right as I am new to android programming but I have set an OnItemClickListener to respond to the users listitem selection by beginning a new intent.

When the user selects whatever article in the listview they should see the corresponding txt file in the new activity.

So in the new activity I have tried to find a way to open the corresponding file in the subfolder of the Assets Folder ....

@Override 
protected void onCreate(Bundle savedInstanceState) {            
super.onCreate(savedInstanceState);         
            setContentView(R.layout.activity);

    Intent i = getIntent();
    int position = i.getExtras().getInt("position");

    TextView news = (TextView) findViewById(R.id.txtView);
    AssetManager as = getAssets();

    InputStream is;
    try{
        is = as.open(""); <----- !!!
        int bytes = is.available();
        byte[] b = new byte[bytes];
        is.read(b);
        is.close();

        String s = new String (b);
        news.setText(s);
    }catch (IOException e){
        e.printStackTrace();
    }
}

.... however i will only succeed in opening a single txt file. How can I implement this activity to respond to the OnItemClickListener from the previous activity as shown here...

    ls = (ListView) findViewById(R.id.bArt);
    ls.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> av, View v, int position, long id) {

            Intent i = new Intent (getApplicationContext(), New_Activity.class );
            i.putExtra("id", position);
            startActivity(i);
        }
    });

... to open the correct .txt file from the Assets Folder

I have been stuck on this for a long time now so my Appreciation points (no cash value) to the functional answer will be unending Much Obliged

Answer 1

Change this

 int position = i.getExtras().getInt("id");

Your Id name must same when ever you passing some data between Activity .

Answer 2

Instead of store the position, store the file name inside the intent. Yon can retrieve it with AdapterView.getItemAtPosition

ls.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    public void onItemClick(AdapterView<?> av, View v, int position, long id) {

        Intent i = new Intent (getApplicationContext(), New_Activity.class );
        i.putExtra("id", av.getItemAtPosition(position));
        startActivity(i);
    }
});

In the other activity retrieve the file name and pass this to the AssetsManager

String  fileName = i.getStringExtra("id");
InputStream is;
    try{
        is = as.open(fileName); <----- !!!
   // other code
   }