i use the base adapter to fill the list view with the dat fetched from SQL lite . My actual requirement is to show only 10 row in a list view , when i click next ,the set of next 10 data from local database need to fetched and update the current list View. but i don`t know how to implement this.
anyone provide some sample code or solution to solve this issue.
Thanks
The simplest way would be to send the adapter only a subset of the entire data ( in your case 10 elements) . When the next button is pressed , you can send the adapter the next 10 set of elements and then call notifyDataSetChanged on it to update the listview.
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I am trying to create a VanSale model app in android. I have a form with customer name and customers item field. In the item field I have created a custom listview with 7 columns.Column contains Sl No, ItemCode, ItemName, Quantity,Discount,Rate and Amount. 5 items will shown in the list. When I pressed a add button will add 5 more items to listview. List items can be upto 100. I want to insert the each items in the listview into sqlite database. How can I done this? Is there any other easy methods to done this?
First Think, you have to learn about looping, iteration conceptual in your mind and take a practice using simply array or list data. if You already know about the sqlite database and listview, i thought you only need to made some function to get from listview using position, and another function to write into database.
Second, Listview has position parameter if you passing it into onSelectedItem method, or you can get directly from listview self and get using position, and sqlite db which you use list or array has position also.
I think its a logical question. so my answer is logical too, or you can attach your code's also here to detailing your problem, good luck.
I want to create a dashboard wherein I want to populate some data in a GridView in android. For example,
Activity - GridView in which there are two columns.
Each grid is Header Text and Result Text.
Now I want to update only Result Text with time as I am fetching it from database and updating the values in real time.
Keeping my Header and whole view intact.
Can anyone suggest any quick way to do so...??
You only need to update the underlying data of the adapter and call notifyDataSetChanged() so the adapter knows the data was changed.
I am retrieving a list of database records and displaying them using a ListView. In my bindView method in my SimpleCursorAdapter i manipulate the data to display to my requirements. This works fine.
I however want to add the data retrieved to a list, so thought I could do that in each bindView method call and store on a private variable in the Activity. What subsequently happens is that my list grows to 21 items in size whereas there are only 7 results displayed in the layout.
Why does this happen? If i add a breakpoint, I can see it's hitting the method 21 times.. Its definitely is a multiple of 3 thing too, as if i have 8 items in my cursor, I end up with 24 in my list.
I don't think you should be using the data retrieved for your list view to populate a local variable. It would make more sense to just pull this data back and populate the var in a separate call. The ListView operation is complicated and you are best to stick with the standard ways of using it. This is worth watching.
I would like to know how to paginate in my listview from my first page to the second and so on and so forth. I have read abt using the Endless Adapter but that isn't a good idea since my data could go up to 1000. Preferably would be to press a 'Next' button and my listview would load the 2nd set of data.
Thanks in advance
Just clean your list and refill it with the next set of data on the button's click. Add a constraint for your list to have, for example, 20 or 30 items.
I have the following requirements.
I am displaying 10 items in a ListView in which each List item displays 2 text views & one thumbnail image . I have coded to display the images asynchronously , since I need to fetch the images using url. The data for the list item is being fetched from server. In the response , I get the information whether any more pages are available for display.
After the user scrolls to the 10 items , I need to call the webservice to fetch the next 10 list of items from the server . When the user scrolls to the 10 th element of the first page , a small progress dialog is displayed at the end of the screen & information is fetched from the server & the view is updated . Also if the user scrolls up , new call to the webservice is not made to the server & the display contains all the list items.
I received few suggestions but am unable to implement the pagination .
Kindly help as I am stuck on this problem for more than 3 weeks.
You might try my EndlessAdapter and see if either it can solve your problem directly or give you ideas of how to implement your own take on the concept.