I am using list view using "ArrayAdapter" to display number of items while user is looking at results when user click on load button i want results to load and prepends(add in the beginning)
Found solution
use adapter's insert method and add it to position 0 every time and also before adding reverse order so that first item will display at the beginning if don't reverse first item will display at end.
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I am having a custom list view. In general it shows some 5-6 data depending to the data. i want a small message in the end of a ListView saying "End of list of results". How to achieve that?
Use addFooterView method of ListView.
I'm using Android Studio, and I have a listView that musts display an important amount of items. showing all of these items have a huge impact on performances. SO I would like to show them 10 by 10, and with a button show the 10 next items. After some researches, I found this android How to limit list items display in ListView and a button show more and this How to limit list items display in ListView by 10 and next 10after clicking next button. But these didn't lead me to a success. The 1st link looks easier but I didn't know where to put the code samples to make it work. Thanks for help !
You dont need to show "Load More" Button always. You can use Android's Recycler View for this. It will load only the data which can be shown on screen. Rest of the data will be loaded as you scroll down. And the view which is scrolled up (Vanishing views) are recycled automatically.
Check this links
https://developer.android.com/training/material/lists-cards.html
https://guides.codepath.com/android/using-the-recyclerview
https://www.binpress.com/tutorial/android-l-recyclerview-and-cardview-tutorial/156
First link question have a simple answer, If you made a custom adapter for populating listview then there will be a getCount() method which will return the number of items you want to show on listview. if you have not getCount() method then simply override it.
Link
there i(variable) have that value which number if items you want to show on listview, on refresh button click increment the value of i(variable) that will again refresh the whole listview and add the total number of items in listview which is the value of i(variable)
I'm building an android app and I'm trying to replace a list view with another list view if you click a button, like the notifications page on Instagram. On that page, if you click on the top "following" button it will show you a listview of what your followers have liked. If you click on the "you" button it will show you a listview of what people have liked your photos.
Any help would be greatly appreciated!
You can do it by following ways,
1. add Two listviews and can change the visibility as per your requirement.
2. On button click you can load the other data into same list view and can update your adapter in the same list view.
in 1 you have to load two list view at first which will consume more time if data is larger sure you can write a login in asynctask to load list views in background thread.
in 2 you have to update your adapter at the button so you will have to provide some progress bar of dialog for user while you list view is getting update.
You can use either of this whichever suites you best.
Simply , You don't need to switch Listview , you only need to switch adapters .
eg, you can switch to mFollowingAdapter when clicked on Following button and switch to mYouAdapter when you select "You" tab. that's it.
You should write a list, that has a custom adapter. This adapter will be able to display BOTH views you want to display.
If the data to be displayed is the same format (ie. both have an imageview next to a textview), you are in good shape.
When you want to switch to a different list, get the information you would like to display, replace the data in your the collection backing your list, then notify the list that the data has changed, and it should redraw.
So, this might look like:
create ArrayList() with data A
setup List, with this data and display
replace the ArrayList() with data B
call listView.notifyDataSetChanged
You can still do this if the Data A, and Data B have different views, in this case, you would need to handle this logic in your custom adapter.
after multiple try's, i'm using "mListView.setSelection(0);" to select the first row in my ListView when the list appears. But dunno why its not working. So how can I let the first row always clicked? Because in my application i have a listview on left side and a webview on right side. So i need that when my app launchs, the first row always selected so the webview loads the details of the first element per default. The data of the listView are loaded using a cursor Adapter that communicates with an SQLite Database.
This is a part of my code :
code
Try setting up an OnGlobalLayoutListener to your ViewTreeObserver, which sets the selection as soon as the layout is set. (Remember to remove the listener as soon as it's called the first time to avoid repeated calls.)
Check the android sources whether setSelection(int) handles unpopulated lists right.
You can try using smoothScrollToPosition(int position) it should work for you.
mListView.smoothScrollToPosition(0);
I've tried, but have had no luck trying to find this answer elsewhere.
I want to add a row to the bottom of my listview that displays "Loading..." and maybe a spinning progress indicator.
My program already loads additional information into the listview once the user scrolls to the bottom. But I want the user to be able to see that the program is indeed loading something.
Example: If you go to the android marketplace and scroll to the bottom of one of the lists, the last row will say "Loading...". Then once the data is loaded, that bar is replaced with the first item of the new data.
Sorry, it's a little hard to describe. I am NOT trying to add a footer to the bottom of the list view. I want it to be an actual item in the listview.
Take a look at the following library:
https://github.com/commonsguy/cwac-endless
It does exactly what you're looking for and it's also very easy to use.
I've used it myself on one of my apps: WorldSpeak. Take a look on it to see the result.
Assuming you have a TextView in the list items, you could add a new item to the end of the list that says "Loading..." and then remove that item when you update the list. I.e., if "hashlist" contains the data as declared in the adapter,
ArrayList<HashMap<String,String>> hashlist ;
HashMap<String,String> loadingitem ;
loadingitem.put( "line1",getString(R.string.loading));
hashlist.add(loadingitem) ;
and then...
// remove "loading..." list item if it's there
hashlist.remove(loadingitem) ;
// then add the new items