In the past I have used Python for backend stuff along with Django for frontend stuff, but I don't know how well those two work with Android. Can anyone recommend a good way to go about making server-side software that works well with Android? Please take into account that I also want a web application as a frontend, so the backend should work with both the web app and the Android app.
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I am beginner (Both Android and Server side programming),
Am having doubt about Server side for my Android mob application
My requirements are 1. Receive request from android mob application 2.Run algorithm on Huge Database Depending on some variable "xxx" inside query request from mob app 3. Send back the result produced to Android mob application.
What type of Server should i run? Database-mysql? How can i combine algorithm and database how can i parse the request from mobile application and run appropriate algorithm.
I have tried to understand for the past 2 days what is the best approach to making the value from a variable sitting in activity A (in my case, the int position used in OnListItemClick / OnItemSelectedListener) available in another activity B (which of course sits in another class). There may be the option to write the result of the OnListItemClick int position into a small SQLite DB - but that seems to be total overkill.
Anybody could pls share the best approach with me?
I am developing an Android app that needs to communicate bi-directionally with a server. By that, I mean either the server or the device can send a message at any time, with an arbitrary amount of time in between messages. Sending data from the device to the server is a common and I think well understood task, but I'm not as sure what the best approach is to go in the opposite direction from the server to the device.
I think having the device periodically poll the server may be a bad idea due to latency and the drain on the battery, but I'd be willing to consider this option. My plan at the moment is to send text messages from the server via an email-to-SMS bridge, and to have my app run a service to receive and handle these messages.
The question I have is if there are any best practices for this scenario, and if using text messages has some downsides that I have failed to consider. For the sake of this question, I want to assume that users have an unlimited text data plan, so paying per text won't be an issue.
As I understand it, Android will only play AAC format audio if it's encoded as MPEG-4 or 3GPP.
I'm able to play AAC audio encoded as M4A when it's local to the app, but it fails when obtaining it from a server.
The following works, as the m4a file is held locally in the res/raw directory.
CODE:........................
The following doesn't work. (But does with MP3's).
CODE:...................
Can anyone shed any light on why it fails when the m4a audio file is not local?
Here's (some of) the error...
CODE:...................
I'm targeting SDK 1.6.
I'm having a problem in accessing a database on remote server from my android application. In some blogs i found that by using Webservices we can do it. but i dont know what are webservices? Can any one help me how do i do that?
View 3 Replies View RelatedI've gotten HTTP POST to send strings to the server side PHP script. My log is showing the correct return values. The script runs fine manually from the browser and inserts a new db table row. But can't get the script to run by having the apk call it... though, again, it returns all script page content including strings.
How can I get the script to run?
I am looking to create an Android application that uses Tabs.
Requirements
- When a user selects a tab and gets back to the same tab, there shouldn't be a loading period (preferably).
- Each tab will contain a listview.
- In one of the tabs, I will have to use subtabs. And that's it.
One great example I really liked (although I didn't try the app) is
http://www.usatoday.com/android/.
Is there a way I can identify a handset on the server side of an HTTP request? I realize many headers are included on the request, but I am uncertain as to how the handset might be uniquely identified? Perhaps the Sim signature or some such fingerprint?
View 3 Replies View RelatedI'm going to develop a mobile version of my webapp. Most documentation I've read suggests one of the following approaches:create a separate domain (m.example.com)using conditional css style sheets, but serve the same html
I'd like to take a completely different approach. I'm using MVC, and would decide which template to render on the server side. My model and controller will be the same, the domain will be the same, but the html will be served differently for mobile users.Has anyone tried this? Any pitfalls to this approach?
I'm working on an app that is meant to be used by fans of a sport team. In the future, I expect to use the same app but for any different team. So, what changes would be the colors, team logo, app name and the like. So, is there any technique that allows me to build binaries for different teams without having duplicated resources?
View 4 Replies View RelatedI used Eclipse with the Android SDK to develop the original application. I ask since this was my first Java (and Eclipse, and Android, and XML) project. I assume that most of the Java should run on the PC without too much trouble. I may want to restructure the code to isolate the Android specific functions. Should I stay with Eclipse or move to something like NetBeans?
View 3 Replies View RelatedFor my first application, the only testing I've really done to this point is on my Droid X. I want to think through the various hardware differences and come up with a testing plan that is representative of the Android landscape. My initial thought is to create a list of emulators that have unique qualities such as screen size and SDK levels. I've noticed very quickly how the UI of my application will need some adjustment when viewed on devices that don't carry a 4.3" screen. How have you approached this hurdle in your own development? Chris Stewart cstewart...@gmail.com http://www.androidsdkforum.com *Want to advertise your Android application for free? Email me for details!*
View 9 Replies View RelatedI'm a total newbie to Android (and to Java in general... mostly a PERL/ PHP guy here...), so forgive me if I use the wrong terminology to refer to things... I have been asked by my company to implement an application for Android that allows a user to enter a note at the end of every call. E.g., either they or the other party hangs up, immediately a notes area pops up with a "save" button and if they enter a note, the note is saved with a reference to the call log entry. As I understand it, onCallStateChange() will give a pretty good indicator of a hangup if the state has become Telephony Manager.CALL_STATE_IDLE. I've figured out how to do the UI part, how to save it in a database, etc... My question, however, is about how I implement this "listening" aspect of it. Should I have a service running all the time that has an instance of android.telephony.PhoneStateListener? If so, do I use the onBind or onStart method, and how do I make sure it doesn't go away when memory runs low? Or can I somehow attach the listener to this event, and then terminate? Or is a Broadcast Receiver the way to go?
View 16 Replies View RelatedWe need to make an application that runs on iPhone, Android and BB. What is the best approach to write the least ammount of code? I know about some frameworks but I am not sure the best approach.
View 5 Replies View RelatedI just read from internet to maintain the state of my application by overriding the onKeyDown function as given below. And set the launch mode of my activity as singleInstance. And it is working perfectly. Just want to know if it is correct approach. And how it is different from onSaveInstanceState.
View 3 Replies View RelatedWhat is the best approach to managing a small SQLite database private to the application? Open (getWritableDatabase)in OnStart and close in OnStop in each Activity?Open in OnCreate and keep open til the user quits the app (where would you put close?) Open, do work and close as soon as possible each time it is needed?
View 5 Replies View RelatedI 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?
I'm having trouble making https connection to the server , with password authentication. What is the simplest & recommended way to do it ?
View 4 Replies View RelatedWe are supposed to cache textual and audio data in our application until device is booted or maximum of two days, whichever happens earlier. To get a perspective on data to be cached, note that we are to store about 200 text headers containing around 10 fields, each of length 30 bytes and about 20 sound files each about a minute long.We are getting the textual data by parsing XMLs and then we keep them in ArrayLists. The sound files are directly written inside the app storage using File I/O (and not on SDcard or Apps Cache directory).This application is to be run on devices running Android 1.5 or later.I understand, and please correct me if I am wrong, that we can cache the files either on SDcard or inside the application or inside applications Cache directory.
View 2 Replies View RelatedBackGround: There are Facebook APIs(and SDKs) available to develop applications for other Mobile devices like iPhone, BlackBerry etc, but it seems there are no official ones for Android(?).
People have ported Java APIs to work on Android and have written FaceBook Client applications(FaceBook dev: Wiki Page). Apparently, there is also a light weight FaceBook SDK in alpha release for Android(a la FBRocket). But it is not avised to be used in Production.
Since these FaceBook functionalities have been exposed as REST based service, most of work would invove sending requests in desired format over Http. So, writing a FaceBook client app for Android certainly is doable.There are similar applications already in market e.g.: Bloo.
Questions: When asked to write a FaceBook client application what approach should one undertake? Should we choose the SDK or invoke the services over Http?
If there is already a Web application that integrates with FaceBook, can we just browse to that Application from inside a WebView and be done with this?
Now i want to write an application to make a certain text to run slowly from right side screen to left side screen and rotate to repeat. How can i do that?
View 9 Replies View RelatedI'm trying to get my textview to hug the left side of the screen while the button hugs the right side (and if possible just for ocd sake have the text view center itself vertically to be in line with the button) but not do it using absolute values.I thought layout_gravity took care of what I'm trying to do but apparently not.
View 2 Replies View RelatedI have 2 buttons side by side in RelativeLayout (170dip each) but in landscape view, they are too narrow - I want to increase their widths automatically for landscape. I need a 'fill_parent' for two buttons at once kinda thing.
View 5 Replies View RelatedI have a native android library (.so) I am bundling with some application. In the native code I want to verify the signer/package name of the calling application.
The reason is, currently anyone can open up the .apk file take my .so file and use it to built their own applications.
Is there a way to securely identify the calling application from Java side? This could be package name, signature or anything else that can identify the Android application in a unique way.
I'm developing an app and i need to detect when the user shakes the phone from side to side , that means just along one axis (in this case X).I want to know when the user shakes the phone to the left and when to the right, the problem is that my code does not detect shaking but tilt, i have tested this code and it works when i tilt the phone to left or to the right, but not when a shake it from side to side (no matter the orientation of the phone).
View 2 Replies View RelatedI was going to contact the dev to see about a fix but it's not showing in the market anymore. I installed Battery Indicator just so I could put two side by side and show the difference. They both do the same exact thing so I'll just stay with the Indicator one.
View 1 Replies View RelatedI figured the X screen would only look a tad bigger than the 4.1" Fascinate. But side by side the X looks like so much more screen real estate.Hands-on with the Verizon Fascinate | Android Central
View 27 Replies View Relatedmy buttons go one under the other, but I want them side by side.How do I place two buttons side by side?
View 8 Replies View Relatedi read the migration notes for 1.6 and I could not tell if 1.5 and 1.6 can co-exist side by side.i need to build applications for both 1.5 and 1.6, and i only have one build machine.other than changing my PATH variable, are there any other gotchas? especially for an automated build process which will need to build images for both platforms.also, i am a bit concerned about updating the ADT plugin. if I do that (update the ADT plugin), will that screw up my development on/for 1.5?
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