Develop Reference

How to add a item to Listview but always make it the last item?

I am going to manually add one item to the listView but i always want that item to be the last item in the listview because i am already adding items the listView dynamically
here is what i am using to add the items:
tableItems.Add(new TableItem("Test","Test",Resource.Drawable.Icon));

you should use your custom adapter.
In your adapter, create Add method and make the new item as the last item of ArrayObject or another way make sure that method getItem (int position) return the item you had added with position == (arrayObject.size - 1)

You could probably use listView.setFooterView(footerView); like shown here.

You need to add data in your listview adapter and need to notify your adapter.
i.e.
_youAdapter.add("ABC");
_youAdapter.notifyDataSetChanged();
Your data will add in listview at the end of the list always.

Notify your adapter after this line
tableItems.Add(new TableItem("Test","Test",Resource.Drawable.Icon));
mAdapter.notifyDataSetChnaged();
if in any case this not work then directly add item to adapter ie.
mAdapter.Add(new TableItem("Test","Test",Resource.Drawable.Icon));
mAdapter.notifyDataSetChnaged();

How to reload Gridview's Items after changing selected item in Spinner

In my application, I have a Spinner which includes list of categories and GridView to show list of
Images according to selected category.
My question is: "How to reload images on GridView after changing category in Spinner?"

From the code that gets the selected category from the Spinner, get your GridView's adapter and then call clear() on it and then addAll(T... items) with the new category items you want to show.
Keep in mind that this assumes you've created the adapter by passing it a mutable List.
If you created the adapter with an immutable List or T[], then you can create a new adapter and set it on the GridView instead.

Add Items dynamically in ListView without affecting other already added items in Android

How to add Items dynamically in ListView such a way that it does not affect already added Items.
I am using custom ListView which contains TextView, Spinner and EditText. I want that if user has entered some text in EditText and then if he/she adds another items then already added/changed values does not affect anyway. After that, I also want values of all 3 controls on ButtonClick
Please help me for this.

Create adding method whitch will loop your listview adapter's items for the same and if contains this value then call return in add method or some other action, if not contains then add new item to your adapter and call for it notifyDataSetChanged() to update ListView in yuor Activity or Fragment.
void addMethodExample(String someValue) {
for (String item : arrayInYourAdapter)
if (item.equals(someValue)
return;
arrayInYourAdapter.add(someValue);
arrayInYourAdapter.notifyDataSetChanged();
}
It's example of adding String value to the ListView. By this logic write adding method of item in your adapter's items array.

ListView Inflation/Preservation

I have a GridView of ImageButtons where the user can select an element to add to the ListView which is the following View. The user will need to make multiple selections from the GridView. This means they will have to navigate back and forth between the two Views, adding their selections to the ListView. I need to know how to re-inflate the ListView with the elements that have already been chosen along with the new choice. Basically, I am struggling with how to preserve the list contents and then inflate the contents when another selection is made. I have been trying to use an ArrayAdapter, but I have been unsuccessful.

It's common to overlook the need to use notifyDataSetChanged() when getting to grips with ListView. Below is a basic rundown of how to populate and refresh a ListView.
Create an ArrayList for your list of elements, a ListView to display them in, and an ArrayAdapter to connect them:
private ArrayList<String> mMyElements;
private ListView mMyListView;
private ArrayAdapter<String> mMyArrayAdapter;
Setup your ListView:
mMyListView = (ListView)findViewById(R.id.myListView);
mMyListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); // There are other ChoiceModes available,
// but I'm guessing this is the most likely one you want for your situation.
Setup your ArrayAddapter and assign it to the ListView:
mMyArrayAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_activated_1, mMyElements);
mMyListView.setAdapter(mMyArrayAdapter);
Now you can change what is displayed in the ListView, by changing what is contained in your ArrayList. Use notifyDataSetChanged() to signal to the ArrayAdapter that it needs to update the display of the ListView:
...
// Code which changes the elements contained in the ArrayList
// For example..
myElements.add(x);
myElements.remove(y);
...
// Notify the ArrayAdapter that it's ArrayList has changed.
mMyArrayAdapter.notifyDataSetChanged(); // This line is vital to get the altered ArrayList to display.
mMyListView.clearChoices(); // You may want to clear any old selections from the ListView when you refresh the display.
<Additional>
If by "re-inflate" you mean that your GridView and ListView are in different Activites or Fragments, all you need to do is maintain the ArrayList myElements when navigating between them. You can pass the ArrayList between them in an intent.

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