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.
Related
I'm experimenting with a movie API (https://developers.themoviedb.org/3/) and I need some advice on what direction I should take to display its data in a RecyclerView.
For example, I want to get a list of popular movies from the API (https://api.themoviedb.org/3/movie/popular) using Retrofit and show them in a recycler view but a single call only returns 20 items/movies. When the user scrolls to the bottom of the recyclerview, I want the next page of 20 items to be loaded and so on. There are 10000 items in total and 500 pages. I know I can change the page query string to request the next 20 items but I don't know how I should design my app to achieve this. Should I use the Android pagination library? Should I do synchronous requests in a loop?
I've taken a long look at the Android pagination library but I'm confused about how to use it for what I want.
Please help :)
basically what am doing is am querying some data from firebase and inside these data is a URL for an image of a specific item. Now since its a query i could get different result form the firebase where i can get 4 images or sometime maybe 1 image.
And i want to display the images in a grid layout ( similar to that of Instagram posts) where the user can click on an image and it shows the user some details about that item. This is the part where am stuck at.. i dont know how to do it since i have a variable number of images.
if there is a way, please help
you can use the Recyclerview and provide the model with those details. It will automatically create those many rows in list.
Here you can follow this to do this.
I have a listview whose data is taken from internet.
Data is a list, a long list, so I'd like to display the first, say, 10 results.
If user scrolls down I'd like a progressbar to appear at bottom, while I ask for the next 10 results to server, then remove progressbar and add the new 10 items.
I see this behaviour in the facebook app, can you point me to a tutorial to do something similar?
First, here is a tutorial for a never-ending ListView:
Android tutorial: Dynamicaly load more items to the ListView ( Never Ending List! )
I've used this in my application and it works flawlessly.
Secondly, this tutorial will teach you how to grab data from the internet and display it in your ListView: Android Custom ListView with Image and Text
Combine both of them together and you get what you need [Provided you have the basic knowledge of Android programming. Goodluck ;)]
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.
I have implemented a Customised ListView using BaseAdapter and Lazy loading concept to load the images for the list items.
I am working with the RESTFul services . The webservice method defines the no of items in each page(20 items per page) & the total no of pages present(5 pages). Now , I am able to load the first page accordingly .
I need to call the webservice method again to download the next page contents accordingly & display it in the similar way as the first page.
Kindly provide the logic/sample source code on how to implement the pagination if anyone has already implemented.
Also , I have seen in few of the Android applications in the Android market , that the progress dialogue is displayed at the end of the list while loading the items , maybe the second page contents.
Kindly provide hints if someone has already implemented so.
Kindly provide the logic/sample source code on how to implement the pagination if anyone has already implemented.
See my EndlessAdapter.