Develop Reference

Need to add a customized horizontalistview beneath RSS Feed application

Can we append component from async task to main activity (add a component beneath the main activity)

you can use open source libraries like.. Sephiroth Horizontal listview
Meetme Horizontal listview and there is many other libraries. you can grab than on github.
NOTE Google your question before asking and search on stackoverflow you will surely get your answer.

See, 1. if you have a listview already created. and want to add more items same as first listview items. you can add the items to the adapter.but items should be same. or so. (I am not clear)
2. if it is not listview (may be it is linear layout horizontal) in this you can also add views in your onPostExecute().
In listView how can we add view is like
ListView lv= (ListView)findViewById(R.id.listview);
assume you have set the adapter.now you want to add a view.
lv.addFooterView(here you can add view layout);
same you can do with (linear layout.)

android layout slider in custom listview

I have this row item in my custom list view, and in my array-adapter which I'm using to populate data in this list contains another list in each item. Which I want to show inside the layout out with arrows (shown in image above).
Any tutorial would be helpful

It sounds like you want a create your own View for each item in your listview.
This view would probably be a LinearLayout that you could programatically add new views to. Simply loop through your list within each item, generate the textview / image / whatever that you need, and add it to the linearlayout.
Note: your inner list can't be scrollable independently of the main listview.

Android listview with horizontal lines when empty

I have a Listview in my Android app, and I want there to be some horizontal lines when the list is empty to indicate to the user that this is a List. I know that there is the setEmptyView method on ListView, but I'm not sure what to put in that view if I want there to be list rows with horizontal lines. How would I accomplish this?

Having a bunch of horizontal lines for an empty list is an iOS convention. If you want your app to fit in with Android better you should set something else. Perhaps notify the user there was an error or that there are no items in the list. You can add this right to your layout.xml file if you're using a ListActivity. All you need to do is create a view and give it the id #android:id/empty.

put the listView in a FrameLayout and add another view in that Frame.
if you having any item in the list hide its (visiblity="gone") and show the other view.
OR
change your adapter to return multi ViewType
in your adapter if you have no item return other type of view

android listview

I have created one list view.. it is having 5 items...
Now I want split the list items...
when user clickon the first listitem or focus on first item then immediately it has to show followed some text views or other things..but it has to show same list..
and agian same when he clickon or focus on the second item that first item has to be close and second item has to act some thing....

I think you need to implement the concept of "Expandable Listview", so that the clicking on one item, it will be expanded with their sub-items.
Refer the android-sdk page of Expandable ListView: http://developer.android.com/reference/android/widget/ExpandableListView.html
For having an example, check this site: http://mylifewithandroid.blogspot.com/2008/05/expandable-lists.html
Pls, check the below image, do you want to perform as same ????
If you want to do the same, it is already given in the "API-Demos" at Views/Expandable Lists/1. Custom Adapter.
Enjoy !!

The problem is that you cannot use the standard ListView in your case, because in the standard ListView, the View of each row has to be one TextView.
In your case, you need it to be at least two TextViews (The standard Text, and the one that's gonna show up onClick/onFocus).
You have to create your custom ListAdapter, and override the getView() function.
Here is a code snippet that shows how to do it properly:
Custom Adapter
In the getView(), you have to inflate the XML file that describes your List Row, and return it.
In your case, I believe your XML file should contain 2 TextViews, one visible and one invisible.
Then, to handle the clicks, you can set a onItemClickListener on your ListView in your Activity class.
The best way may be to have your Activity class implementing onItemClickListener, and to use this onItemClickListener to handle those.
In the onClick() function, you just have to set the Visibility of your hidden TextView to VISIBLE.

You need to build custom rows, and handle showing more text on each row, there is no easy magicall way of doing it, but inflating your own rows, and setting a couple of attributes visibility isnt all that hard either.

Android: How to work with Checked ListViews

I wish to work with checked list views wherein only one item can be selected at a time. Some queries related to this:
Is it advised to work with CheckedTextView as the ListView items, or a combination of CheckBox and TextView?
If using CheckedTextView, the text comes first and the checkbox appears on the right edge. Is it possible to make the checkbox appear on the left of the TextView?
How can I make one of the items as checked in onCreate()?
Note: I am using array adapter and calling setAdapter() to populate list.

You need to extend ArrayAdapter and use LayoutInflater to inflate the row layout as you need. This way you have full flexibility in list creation.
Please check this example, where basic idea is described:
Custom list view