Android :: Best Way To Implement RPC Layer To Communicate With Server
May 25, 2009
I'm starting my first Android Application and I'm trying to figure out the best way to implement an RPC layer to communicate with my Tomcat server. Basically, I've got POJOs on the Android Client and on the Server. I simply would like to seserialize the POJOs on Android, send up an HTTP Post, deserialize on the server, do some work, then serialize a POJO response back down to the client. I've seen a number of posts referencing JSON and XML but nothing really definitive.
Further clouding the matter is the different Android SDKs out there that seem to have different levels of support for each. Obviously, if Android has a native library that works well, I'd like to use that. Additionally, I'd like something that could work with my existing POJOs without a great deal of trouble. What are the best practices for this sort of thing? Can anyone send me to any tutorials that have some solid examples on how to get this implemented and going?
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Sep 12, 2010
How to implement a layer above a layout? like this pic: http://ss12.sinaimg.cn/orignal/5d8cb30ag8f47eca43a5b&690
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Aug 2, 2012
how can we implement the tiled layer (java net beans) in android?does we use open gl for this?
is that called "texture" or "wallpaper" or ...?
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May 4, 2010
I'm pretty new to Android and Java, though I've really been excited about what I've learned so far. I'm a little uncertain though on how to implement the Model layer.I come from a background in PHP web applications with Zend Framework and the like. I'm used to having an ORM component, through which the Model maps to a database. I haven't really seen anything like this yet for Android, although it's possible I've just not looked hard enough.Are there any good tutorials, articles, 3rd party libraries, etc. that specifically address setting up your Model layer for Android apps?
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Jan 17, 2010
Can any body tell me why this is happening..Whenever i try to open a website located in the intranet server,(or even a local machine with tomcat web server) i get this message.Data connectivity problem..Server failed to communicate.Please try again later The browser works fine for all other websites i tried google,youtube,yahoo,etc all of them worked fine.Do i need to set any other value in the emulator? Any one else got the same problem?
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Sep 22, 2010
Every time I try to do an update on this phone it says "failed to communicate with the server".I have not rooted or sideloaded or done anything to the phone. How will I be able to get the updates?
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Jun 4, 2010
Has anybody received an error "the server failed to communicate" when attempting to get an internet connection?A restart didn't appear to resolve it so I took the battery out and now its working.I don't think its network related as I had a HSDPA signal at the time.
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Dec 21, 2009
Ok so I know many are having battery issues. You, like me, probably have more battery life than you think. This is because the application layer of the phone is not receiving the hardware layer's data correctly (hold talk button, end call button, and middle button upon starting up your turned-off phone, this boots in test mode which shows you hardware layer battery power, aka the correct battery life estimate). It's causing another problem because some applications can't be run when the phone THINKS it's about to die.
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Apr 1, 2009
I want to implement SyncML on android. I want to sync my contacts and calendar on my server.Is it possible in android ? if yes then how ?. I am waiting your response.
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Aug 16, 2010
I've got a standard RelativeLayout laying out my Buttons and TextAreas. What I want to do now is be able to draw various sparks, flying cows etc. at arbitrary places on the screen on top of the whole thing. What's the best way to do this? Should I override onDraw() on the containing View and draw after calling super.onDraw()? Or is there some better way of drawing a layer on top?
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Jun 24, 2010
just got my incredible today which btw I am loving it. However I have run into an annoying issue, Layer Reality will not install. I downloaded the app from the Android store and while it appears in my download list completed it will not install saying (download unsucessfull) after around 2 seconds or so. I am really wanting to check this app out.
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Jun 23, 2009
I have a GIS layer, that holds information about some areas. It is basically a rating for a specic area. So each shape defines a specific rating. I would like to be able to add this layer to Google Maps and then in my Google Android phone be able to open a little application that just shows that rating based on your current location as a big number on the screen. I am fairly new to Android development, so I don't know the Google Maps API that well yet. I would be very happy for any pointers in the right direction and even happier if anyone could present an example.
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Oct 18, 2010
If I draw a round rect shape by code I can use setShadowLayer to get a shadow drawn for the shape. Is there an equivalent when defining shapes in XML?The following example draws a round rect background to a shape. What would I need to add to get a shadow added to the shape? Is it even possible using XML? Code...
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Sep 30, 2010
Does someone tell me what is application and middle layer in android. I have to know details these 2 layers and about linux kernal and how is related to android.
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Dec 30, 2009
I dont know wether this is the right place to post this, but I had a great idea for a implementation of Contacts within google maps. Maybe it is already possible or someone already is developing this, but here it is: Add a selectable Layer to the Google Maps on the Android system that integrates with the Contacts list and shows them in Google Maps. Only contacts with an adress can be shown in Maps and have to be in a certain format ofcourse. Also, you have entered a contact's adress information, from the Contact's menu with 'Call' and 'Text you should be able to use 'Navigate to', which is a Google Maps route from your current location to this person's house.
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Jun 21, 2010
I have a few already written C libraries which i want to embed into the library layer of the android architecture at the same level as the already existing libraries such as libc etc.... i dont want to insert it as .jar packages at the application or framework layer. is that possible.
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Feb 9, 2009
I am working on a device that uses dns names and IP addresses to make calls. This is not phone device. We are planning to replace the RIL layer bottom end to talk to our own call backend that accepts IP addresses. When I invoke a ACTION_CALL intent with a dns name, I see the Phone app coming up and changing the dns name into a phone number. Is there any option to turn that behavior off? Basically the phone app passes whatever string I passed all the way to RIL layer as is without mangling it.
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Mar 29, 2010
i want set my footer at the top layer of my app. it should not have any shakes and moves while the activity navigation or showing up the keyboard. it should always settled in the bottom of the screen. how to do that?
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Nov 1, 2009
So I heard on NPR today that I can use my android phone to track where the money from the Stimulus package (ARRA) is going. I googled it, and came up with this info:
Sunlight Labs: Blog - Recovery.gov Augmented Reality Mashup
Layar App Maps Stimulus Money Onto The World Around You
I search on layar for "recovery" or "sunlight", but I don't get anything. Anyone else get this working?
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Apr 13, 2010
I want to create a communication layer in android. The layer will communicate with server asynchronously. Multiple activities should be able to call methods of the communication layer. The layer will get messages from the server (it is not important for the scope of this question how) and should be able to tell activities to do some work based on these messages.
How should I implement this? Should I do this using android Service?
The main questions that I need to answer are: How can activities access the layer? How can the layer access activities? How can i make the communication layer live for the lifetime of the application?
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Jan 20, 2010
Is there any Java ME compatibility layer for Android, which makes porting Java ME (aka. J2ME) applications easier? I mean a third party class library which redirects calls to internal Android API.
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Sep 29, 2010
I have a hosting account at godaddy ruinning Linux. Is has MySQL. I am creating a J2ME application that runs on android and I was wondering if there is any simpler way to connect from j2me application to my MySQL server?
Is it required to install anything at my server? which I cannot do because of the shared account. Any way to just open the connection, update some data in the MySQL from j2me application?
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Feb 27, 2009
I am using a TabHost one tab with a list and another to show the details of a specific item selected in the list. Does anyone know how I can communicate between tabs?
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Mar 25, 2009
I am trying to send AT commands via Ril from LocationManager as there is only one AT port I can use. But it seems like that there is no ways to call the function refer to Ril. Can I just new a commandsinterface and to call ril's functions via it?
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Apr 22, 2009
I have read 'http://developer.android.com/guide/tutorials/notepad/notepad-ex2.html', specifically step 4 ahow can I return a different result to the 'calling activity', in this example, it always return ACTIVITY_CREATE. What if the 'activity being launcher' has a 'okay' and a 'cancel' button. How can the 'calling activity' knows which button user presses in the 'activity being launcher'.
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Nov 24, 2010
my machine is running window 7.i want to communicate bw two android emulators running on same machine.Emulator 1 is listening on some ip 10.0.2.15 when emulator two tries to create Socket socket = new Socket ("10.0.2.15",8080);it gives exception, unable to connect to 10.0.2.15.does any know how to solve this problem??
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Apr 9, 2012
I want to control my pc with an app on my android device over usb. Is this possible.
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Aug 25, 2009
Google Map's traffic layer is working for my area on my G1. Really, really convenient to see how fast traffic is moving at a glance from my phone!
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Sep 22, 2009
Can a core class such as "AbsListView" access resources, such as xml files, and .png's, in a 3rd party app installed in the normal way (at the app level)?
I realize this is a change in framework code, and that is fine for my purposes. So, for example, if I know that I am going to install an app called "MyApp", could I go into frameworks/base/core/java/android/ widget/AbsListView.java and tell it to use an xml file and .png's that live in that app? Here is the line I would want to modify: setSelector(getResources().getDrawable( com.android.internal.R.drawable.list_selector_background));
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Jul 19, 2010
I read an article from the web on SL4A (which is also known as Android Scripting Environment). The site from where i got an article is: http://infoworld.com/d/developer-world/php-development-comes-google-android-652. But i got the theoretical knowledge only for SL4A (ASE). Anybody having practical idea or practical example, pleas suggest to me. Which are the scripting language supported by ASE? How do i download script?
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