In my android application I want simple list which should be initially blank when I add item it would my root list item. Further, when I add more item in that list it all should be under that root list item and it should keep number of item added under that root list .
How can I achieve this?
Have a look this answer listView dynamic add item
In this code we are add data at run time.
first of all we set the an empty adapter to listview after that at run time we add the new item on button click
If you want nested items then your best bet is to use the ExpandableListView http://developer.android.com/reference/android/widget/ExpandableListView.html
If you want more than one level of nesting then I do not believe there is anything out-of-the-box to achieve this.
Just use an ArrayAdapter to show items on the list.
When you need to add items just add them to the array and call notifyDataSetChanged();
Related
Android ListView show elements as checked base on element position. So if I add new element to the top, while some elements are checked, or remove element from the middle, wrong elements are shown as checked.
I have access to checked items ids list.
Is it possible to update ListView to show only checked items as checked? On which event I should do this (which method should I override)?
You can try this::
for this purpose you can use custom adapter for listview and in listview adapter there is GetView() method that can be used to achieve that you want.
Here is the Link for more info and Example
Hope it Helps!!
It was a bug in old Android version. I wasn't able to fix it there. In newer Androids it doesn't exist.
I'm trying to find a way to add a checkBox to a ListView layout that can be used to allow the user to select items to be processed. The listview is populated using a cursor via a SimpleCursorAdapter. Can anyone point in the direction on documentation describing how to do such a thing.
You need to manage the selected items in the listview in the getView method manually. At last you will get the selected items. use Arraylist or hashmap as per your need and comfort.
Hope it will help you.
Also refer these links:
Android ListView with Checkboxes: How to capture checked items?
Android ListView
Adding CheckBoxes to a Custom ListView in Android
how to display all checked items from multiple choice listview
How to create a listview in android so that when I want to click on of the list items, it expand to show more details?
Just override the methods below
setOnChildClickListener(ExpandableListView.OnChildClickListener onChildClickListener)
setOnGroupClickListener(ExpandableListView.OnGroupClickListener onGroupClickListener)
This inside this, you can to whatever you need, when you click on child or group item
You can use the expandable list methods
I have a simple ListView in my application. What I want to do on a row select is to expand it and show additional details in there and then if some other is selected then collapse the previous one and expand the new one.
I can modify the contents list item row in onListItemClick() method. However how do I animate the change in height of the list item row.
Is there a better way to do it? Or is there a better component still? I don't want to use the expandable list as it's not a group of child lists, instead just expanding the contents with more details.
Any help is much appreciated.
Cheers
Have a look at Lazylist below this.
http://open-pim.com/tmp/LazyList.zip
i think this example is great for build your custom ListView
How to remove item from a list view? how to reload the list after removal?
Here you can find all the informations.
Anyway you can call
mListAdapter.remove(x); // to remove an item
and
mListAdapter.invalidate(); // to refresh the content
or
mListAdapter.notifyDataSetChanged();
Please, there's no need to write with multiple question marks like that. Removing items from your ListView depends on how you put in the items in the beginning. Edit your question to provide some details on how you did that. Updating your list afterwards can be done with notifyDataSetChanged() called by your ListView adapter.
Remove from the adapter, and the list will refresh automatically.