Identify the item clicked on ListActivity method onListItemClick

I'm developing an 开发者_运维技巧Android application.

I have several objects loaded on a ListActivity. I want to know the item clicked on event onListItemClick.

I see method onListItemClick has a parameter called id. How can I setup this id?

My objects are identified by an ID, how can I add this ID to listItem?

Thanks.

if SectionObj is your object that you want to access later, set that in the adapter when you set the source.

ArrayList<SectionObj> li

ArrayAdapter<SectionObj> adapter=new ArrayAdapter<SectionObj>(getApplicationContext(),android.R.layout.simple_list_item_1, li);
    setListAdapter(adapter);

then in ur listener method..

protected void onListItemClick(ListView l, View v, int position, long id) {

SectionObj o=(SectionObj)getListView().getItemAtPosition(position);

}

What is the source of your list data? If you are using a cursor - then the id passed in onListItemClick(ListView l, View v, int position, long id) will automatically be the id of the cursor row.

Use the following;

listView.getItemAtPosition(position);

Where listView is the name of your list view.

You can set the id in your ArrayAdapter view. Checkout the following pages then you should find the solution.

http://developer.android.com/reference/android/app/ListActivity.html#onListItemClick(android.widget.ListView,%20android.view.View,%20int,%20long)

http://sudarmuthu.com/blog/using-arrayadapter-and-listview-in-android-applications