I want to create Android app where I have items with images and descriptions - only for information, no interact. How can I download layout from server and show remote data? I'm newby - I can create simple apps, but this problem is not solved in Internet. I search in Google, Youtube but I can't find anything.
First you need to create a layout in your app (you cannot parse layout from server only data can be parsed), then connect your layout items to loading data from server.
You can check out an basic example to populate list view from server from here and here
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I have created a web portal on drupal from where users will upload files on the server.
Lets take for example after uploading files :
location of the file is :
website.com/userfiles/college/year/subject/file1.pdf
now I want to display this hierarchy in android App.
I want to display a List View / Recycler View which automatically gets the names of files in subject folder and display it dynamically.
(If i add another file in the same folder on web, same gets automatically reflected in the app, one more entry of the file should come in the view)
How can I do that?
I have no clue about it!
Thanks
You will need directory listing enabled on the remote server, and parse the HTML output in your app. (Or create an ex. Server side script (PHP?) that returns a directory listing)
Check out any of the availible http clients for Android, like third party OkHTTP, or LoopJ AsyncHTTPClient (I always liked his one) or HttpURLConnection which comes packed with Android.
I have created a list view just like a whatsapp chats list which is working fine it is loading data from server and setting its view but the problem is when the device is offline it cannot show the view which was previsouly created so my question is how to save the list view offline so that when the device is online my app recieves views from server and if the device is offline then the app should show views which were previously loaded.
And if possible please share some tutorials related to this.
You need to save your data locally using database. The most common option is sqlite. You can try this tutorial to understand what to do: http://www.tutorialspoint.com/android/android_sqlite_database.htm there are some options like Sugar Orm (or any other ORM) which uses sqlite in the background but makes it easy to work with objects (the shortage is that you are very limited when it comes to relations between tables and such). Anyway, this is their website: http://satyan.github.io/sugar/
You can try using Firebase database for your chats. You Just need one line of code to enable chats offline persistence i.e
FirebaseDatabase.getInstance().setPersistenceEnabled(true);
For more take a look on offline-capabilities.
I need to display some data from the server via my RecyclerView. The problem is how to notify the application that new data is available in the server. I have seen in some applications where the top of the list has a button with text like "Show 5 new posts." After clicking on that button, the 5 new posts download from the server without downloading the entire list of data. How can I implement that same synchronization?
There are lots of ways to achieve synchronisation in android.
You can use SyncAdapter (Highly recommended).
You can use GCM, push to client if anything new comes up and act accordingly.
Further you can use Local Broadcast Listener to notify that view
I think this link will help you to understand the synchronization between android app and server - Sync data between Android App and webserver .
I am new in Android Development. My simple question :- i want to create an e-commerce android app . I want to make it dynamic ie if a new product is added to already created JSP site or particularly Mysql database , how can i sent information including image file from mysql database to android app? I know little bit about Http request response in android, as well as jason array but was only able to send text. How to achieve same for images?
use http://developer.android.com/reference/android/webkit/WebView.html to show your server-generated html-page.
send text only - send the URL to the image and the app can then download it
I am developing Android application and trying to retrieve data from one server to display data into the android grid through a web service. I created a web service in .net and connected to server in that web service application. Now the problem is, I have data in xml file and I don't know how to bind that XML data in android GridView, if anyonw knows, please post the code. Thanks in advance.
watch this:
http://www.google.com/events/io/2010/sessions/developing-RESTful-android-apps.html
(yeah, i know its aprox. 1h, no code, etc ... but it's worth to watch, really)
use JSON instead of xml
cache data in local sqlite db
use data from cache