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Android Add custom items in costum ListView

I am creating a costum ListView
In this ListView I have the a list.xml with an item which has an image and three text fields.
Now to my problem :P
How can I add this custom ListView ITEM to my ListView (after a Button from another activity is clicked) and save it somewhere like in SQL...

Don't use ListView. Use RecyclerView instead.
https://developer.android.com/training/material/lists-cards.html#RecyclerView
You need to create adapter where you point proper XML file for an item

1. First, create a custom layout XML for your list row item(Image and 3 TextViews).
2. Create a custom adapter class to populate your ArrayList<OBJECT> on custom list row XML.
Here are some good tutorials:
Android Custom ListView with Image and Text
Android Custom ListView with Image and Text using Volley
Android Working with Recycler View
FYI, You can use RecyclerView instead of ListView. Android RecyclerView is more advanced version of ListView with improved performance and other benefits.
Hope this will help~

Android - How to implement a List with detail on the same List?

I'm using a ListActivity to list events, and i want to show the events and after that i want to show the list of participants on the same List.
I'm getting JSON data to get the information and one element is a List of the participants.
To show the data i'm using an ArrayAdapter.
EventosAdapter adapter = new EventosAdapter(this, R.layout.item_evento, EventosList);
setListAdapter(adapter);
The question is, what is the correct way to do this?
Use a LinearLayout inside the ListActivity and to show the detail info use another ArrayAdapter?

You can use Expandable ListView
https://developer.android.com/reference/android/widget/ExpandableListView.html
Example,
http://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/

Populate custom listview when I click on another custom listview item

I have two listviews with custom adapters. The first listview contains names of lists. When I click on the name of a list, the second listview have to be populated with the contents of the clicked list. I need to read the contents of the list from a local SQLite database that's located in assets, but that's not important. Assume that I have array of the contents. I know how to do this if I have to populate them on button click, but I don't know to do it this way. Both listviews are in the same activity.

by using onItemClickListener of listview u can do this.
on onitemclickListener of first listview u set adapter for the second listview
u can do this using one customadapetr and u can write separate customadapter for both
listview.
if u post some sample code i will try to give more specific answer

How does listview differ from listactivity

I would like to know what is the diff b/w listview and listactivity. According to my understanding, if we have only list in a screen then better to use listactivity correct?.
If we want to add either simple button at the bottom of list or include search on top of list, then we should use listview in layout file right?

List activity is the activity which has a listview as its layout by default... and you can even customise the listview in the ListActivity by using a layout inflater and adding views...and yes.. for simple listview use list activity.. and to add such components use listview in layout..
To customise your rows in list use listactivity like this..

Layout problem with Custom List and native controls

I am trying to have a layout with 6 TextViews and a Custom List.
TextView number 3,4,5 have images next to them,followed by the Custom List.
The custom list is done , but I am not sure how I can get the upper part ( TextView controls and images ) and the custom list in one layout.
For other custom lists I have always extended from ListActivity and set the list adapter in the same class as it is the only control on the screen.
In this case the class extends from Activity,how can I set the list adapter in the Activity class ?
Any pointer's to achieve this layout and which layout will be the optimal choice(Linear,Relative..) ?
Thanks,
Salil.

I found the answer to my problem.
Add a listview to the layout xml
Get the listview object using findViewById
User etAdapter to set the custom list adapter
Now I can use the custom list along with other controls in the same Activity.
Thanks,
Salil.