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I want to develop an app in android through which I can easily transfer Voice over Internet (VoIP). There are many application in market like CSIPSIMPLE. Is there any tutorial which can start from beginning and also how to maintain its server. What are the basic terminologies which we have to use. Please suggest.
Thanks in advance
http://developer.android.com/guide/topics/connectivity/sip.html
Android has a simple sip stack included which should satisfy your needs. Apps like CSipSimple (most of them) use their own sip stack with different codecs/filters applied to the device's input/output, but that requires more work as these are native due to performance.
So for a simple VoIP application, feel free to use android's utilities. Server software choice and maintenance is depending on what you want to achieve, just google for sip servers and read.
CSipSimple is open source. Just start there. Note that it is GPL, so you won't just be able to copy and use it in a commercial application, but you'll see what's involved internally.
For the server, Asterisk has been around for over a decade. There are other alternatives, but Asterisk is the de-facto standard for open source PBX.
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Is it possible to adapt this java code from this webpage http://www.dreamincode.net/forums/topic/27950-steganography/ to be used on the android sdk.
It has ImageIO, WritableRaster and things from java.awt. If its possible please tell me how!
Thanks
Is it possible to adapt this java code from this webpage http://www.dreamincode.net/forums/topic/27950-steganography/ to be used on the android sdk.
Is steganography possible using the Android SDK? Yes. You would manipulate the byte[] of a Bitmap, either in Java code, in native code via the NDK, or perhaps using Renderscript Compute.
Can you perhaps leverage the steganographic algorithms from that code when you write your Android implementation? Presumably yes.
However, as you note, that code depends heavily upon classes that are not part of Android, which is why would you be better served starting with the algorithm and creating a native Android implementation from there, rather than trying to "adapt" the AWT-dependent Java code directly.
Or, see if somebody already has an Android steganography library that you can use.
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Do you know how to set an Android or iPhone device's datetime
using a feaure within your mobile app
that you built using Delphi XE5?
This should of course happen at runtime.
Delphi offers no cross-platform way of setting the system time.
On iOS, you don't have access to the API for changing the time; that functionality is reserved for the OS.
On Android, you need elevated privileges, and then you can use AlarmManager.setTime. At that point, your problem is simply one of adapting the native Java techniques to Delphi. I assume that's pretty much the same for any API, so it's beyond the scope of this question.
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I am new in android and i develop an application that receive data from MYSQL external database using PHP.
I need to create a service to check frequently the database if there is any change made on it the end user will get notification , so how i can create this like this service ??
any article to read ?!
thanks in advance
Well, what are the specifics of the service? What are your requirements? Do you just want to poll your database, and then stop the service once data is retrieved. Will you need a separate worker thread to do this work?
You might want to look into Intent Service for this. Documentation on it can be found here
A standard service may be fine too, but I'm not sure what the specifics are for your project, so I would read up them both and figure out exactly which would be best for your needs.
See this SO question that gives a brief outline of them both.
Firstly, welcome to android development.
Unfortunately your seemingly simple example will require you to learn a lot of android concepts so I cannot answer your question as directly as you might like.
That said, the following site is very good for android tutorials
http://www.vogella.com/android.html
I have also compiled a list of android resources on my site that you might benefit from:
http://www.sage42.org/we-recommend/
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How can I implement an OCR function in my android app? I want to make an app that takes a picture and translates a text from it. Any APIS or tutorials for that?
Thanks
Update: Here some additional links I found that may assist you on configuring tesseract. I personally have not use this, as I personally opted for 2D code approach.
http://rmtheis.wordpress.com/2011/08/06/using-tesseract-tools-for-android-to-create-a-basic-ocr-app/
http://gaut.am/making-an-ocr-android-app-using-tesseract/
Original answer
Well without knowing anything about your app, I would like to note that you probably could not beat Google Googles when it comes to OCR features. Maybe you can add additional detail what kind of text do you want to be able to translate? So we know your not reinventing the wheel :)
I found a few links
https://code.google.com/p/tesseract-ocr/
http://ocrsdk.com/producttour/many-more/
But if I may suggest, if you it specific message that can you want to parse, I would recommend actually using QR barcode. You can convert a CSV file into 2D code and then have your app scan it then parse it to do some custom feature.
Here library I used for 2D code and found it quite useful in the past. Zxing which is open source and free to use
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I am writing an application which I hope to build a client for in Android.
However, I am fairly inexperienced in Android development and am looking for droid devs who would be willing to contribute to my open source client.
Where can I find such people? I dont care where they are, just as long as they have a strong grasp on the english language.
*edit: to clarify - I am not trying to recruit people through stackoverflow, merely where such people would register as willing contributors looking for a project, so I can look through their profiles and get in contact with them.
I would post you project on an open source repository website like GitHub or Google Code. And start making commits and post information on the app. Most open source projects start with a few devs and the community kicks in once you have a decent user base. I feel like the best way to recruit people to to put your project out there and show people that it has potential. Then people will want to contribute to it.
Maybe you are looking for Android contributors group.