Database Users

What programming language do Android developers use??

A) What programming language do Android developers use??
B) and what language are most apps written on?

B) Java
http://developer.android.com/guide/topics/fundamentals.html Everything to get started is there.

Android programming is done in linux, apps are written in java.

jroid said:
Android programming is done in linux, apps are written in java.
Click to expand...
Click to collapse
Android programming can be done on any OS platform.

kopykatkiller said:
Android programming can be done on any OS platform.
Click to expand...
Click to collapse
Yes, but the operating system is based in linux.
Sent from my Vibrant using Tapatalk

bahnburner said:
Yes, but the operating system is based in linux.
Sent from my Vibrant using Tapatalk
Click to expand...
Click to collapse
Yeah, but the way he said it sounded wrong. The Android kernel is programmed in c,c++ and is a Linux based os. You can program apps for Android in most languages now: c++, c, and ruby just to name a few. Most choose java since google has pushed it enough and made it simple.
Sent from my Samsung Vibrant using the XDA App

The app itself is written in java. And, there is some XML.
Check out eclipse.
Here is a help site for windows: but you can apply it to linux or macosx
http://www.vogella.de/articles/Android/article.html

SuperMiguel said:
A) What programming language do Android developers use??
B) and what language are most apps written on?
Click to expand...
Click to collapse
GREEK.......................................

dattas said:
Yeah, but the way he said it sounded wrong. The Android kernel is programmed in c,c++ and is a Linux based os. You can program apps for Android in most languages now: c++, c, and ruby just to name a few. Most choose java since google has pushed it enough and made it simple.
Sent from my Samsung Vibrant using the XDA App
Click to expand...
Click to collapse
This. Java is certainly the most widely-used and most supported by Google, but more and more compilers and VMs are emerging. For example, the MonoDroid project is working on a Mono VM for apps written in C#.

PHP is also on the rise
http://www.infoworld.com/d/develope...-google-android-652?source=rss_infoworld_news
http://www.slideshare.net/coogle/building-php-powered-android-applications

bahnburner said:
Yes, but the operating system is based in linux.
Sent from my Vibrant using Tapatalk
Click to expand...
Click to collapse
Linux isn't a language. The user is asking for programming languages.

Pretty sure you can also code apps in C using the NDK. Or maybe that's just OS code, can't remember. Either way it runs extraordinarily faster than Java obviously.
EDIT: Just read up on it and apparently you can only embed C in apps using the NDK in conjunction with the SDK

I think I am going to jump in. I am a software/web developer and I have the Android SDK, Eclipse, Visual Studio 2008 and a number of other tools on my dev box. I love coding in C# but I can do Java and some other stuff too. What is a good way to get my feet wet....aka "Hello World" ?

frankencat said:
I think I am going to jump in. I am a software/web developer and I have the Android SDK, Eclipse, Visual Studio 2008 and a number of other tools on my dev box. I love coding in C# but I can do Java and some other stuff too. What is a good way to get my feet wet....aka "Hello World" ?
Click to expand...
Click to collapse
http://developer.android.com/guide/tutorials/hello-world.html
http://www.vogella.de/articles/Android/article.html

Thanks. I just got Eclipse (Helios) setup with the ADT pluging and I am messing around with the emulator. So this is basically what it used for testing/debugging etc. or is there something better?

frankencat said:
Thanks. I just got Eclipse (Helios) setup with the ADT pluging and I am messing around with the emulator. So this is basically what it used for testing/debugging etc. or is there something better?
Click to expand...
Click to collapse
That's pretty much it. You won't enjoy anything remotely on the level of what you're used to out of something like Visual Studio, but once you figure out Eclipse (and that can take awhile, it's probably one of the more inscrutable modern-style IDEs I've ever used, and I've been doing this for 30 years; and I'm sure I'll get flamed for that)... but once you see the world through Eclipse's eyes, it's about like writing any other app.
I've gotten into Android dev and back out again several times. Usually I get tired of Google's rather sub-par developer support and go back to some type of paying project.
But for some reason, there is a certain kick to seeing your app run on a phone the first few times.

frankencat said:
Thanks. I just got Eclipse (Helios) setup with the ADT pluging and I am messing around with the emulator. So this is basically what it used for testing/debugging etc. or is there something better?
Click to expand...
Click to collapse
Yeah you can either use the Virtual Android Device to test your app OR use your phone and you the ADT plugin will install the app onto your device. The emulator takes a long time to start up. Whenever I'm bored and want to write a app for fun, I tend to use my old device (G1) as a debugging device because I can't stand how long emulator takes to stat up.

Thanks guys. I have my first little app up and running in the VAD emulator.
I found out that you need Eclipse 3.5 (not 3.6) and the JRE 1.6 for everything to be happy. Now where to go from here....

This is turning into a nice little getting started thread. I hope people who have other suggestions for noob developers will continue to post.

dex1701 said:
This. Java is certainly the most widely-used and most supported by Google, but more and more compilers and VMs are emerging. For example, the MonoDroid project is working on a Mono VM for apps written in C#.
Click to expand...
Click to collapse
Google is also big on Python (Google app engine), supposedly there will be support to create .apk's using python in the feature.

[Q] Develop ROM

Hi,
I want to develop a ROM for the x10...
How should I begin.
Thanks in advance.
PlauGunsta

My friend,
It's so easy to do.
You just need the Flashtool SW (pls use the last version) I guest it is on rev. 0.2.9
then after you look for a tutorial explaining how to make it.. you can find it here in XDA Developers.
BR/

Hi,
well you need good knowledge of C and java. C is used for kernel related stuff and programs runned from shell and java is needed for android and all,because it is running in the so called dalvikVM (a java virtual machine).
Aswell a little asm knowledge might be useful but not that important.
Get the X10 kernel-source install a unix distro and start compiling modules to integrate in the the phone, just like its done on custom roms.
Thats the best you can do to learn, beside reading books
Sent from my Xperia Arc using XDA Premium App

<AdY> said:
Hi,
well you need good knowledge of C and java. C is used for kernel related stuff and programs runned from shell and java is needed for android and all,because it is running in the so called dalvikVM (a java virtual machine).
Aswell a little asm knowledge might be useful but not that important.
Get the X10 kernel-source install a unix distro and start compiling modules to integrate in the the phone, just like its done on custom roms.
Thats the best you can do to learn, beside reading books
Sent from my Xperia Arc using XDA Premium App
Click to expand...
Click to collapse
To do that I will need a faster computer right? If it's so I won't be able to be a good developer for the x10 I got just 1gb RAM on my slow laptop with windows 7 )
Do you think it's possible for me if I have no knowledge to create a own 2.2.1 ROM? I want to release one with a great theme, tweaks and stuff.

Yes its better to have a faster PC. There have been many cases where either the motherboard or the hard disk gets burnt due to excessive load while compilation.
About the froyo question, my answer is no.
You have to know Java for development of roms
Sent from my Xperia Arc using XDA Premium App

PlayGunsta said:
To do that I will need a faster computer right? If it's so I won't be able to be a good developer for the x10 I got just 1gb RAM on my slow laptop with windows 7 )
Do you think it's possible for me if I have no knowledge to create a own 2.2.1 ROM? I want to release one with a great theme, tweaks and stuff.
Click to expand...
Click to collapse
no way, lol.
It Takes many years of practice before you can really do that...

A damn...

Well if you want to start from Scratch it is going to be a Mission Imposible to develop without the knowledge. But if you take let's say Zdizihu's AOSP Froyo ROM which is really clean with no extra ads and you add your theme (Framework and services.jar) and made the "Tweaks" most of them are stored in build.prop then you don't need that much knowledge just:
Winrar
Notepad++
and enough time to test it.
My suggestion don't release it as ROM since there are too many "ROMS" using Z's base and quite honestly is boering to see that lol... I myself have in my phone Z's ROM with CM Settings, Arc Launcher, OpenVPN tweaks, build.prop tweaks etc but not releasing it since it is not a real ROM.
If you have a good theme then release it as theme, people will equaly appreciate it my friend and the best thing it will not wipe their data
Have a good day.

A thanks, how do I create themes then ?

There is a tutorial regarding the same in the themes and apps section. Make a search there. All the best
PlayGunsta said:
A thanks, how do I create themes then ?
Click to expand...
Click to collapse
Sent from my Xperia Arc using XDA Premium App

PlayGunsta said:
Hi,
I want to develop a ROM for the x10...
How should I begin.
Thanks in advance.
PlauGunsta
Click to expand...
Click to collapse
In x10 mini sectio you have a tutorial how to make a rom!
http://forum.xda-developers.com/showthread.php?t=888227

Thanks for all replies, I will look into it.

IPA to APK

can someone of the developers make a converter.
IPA to APK converter, something like the PSXperia tool.

Doesn't work, ipa is iPhone and apk is Android

Posts like this remind me of when Super Nintendo came out and all these parents were freaking out on the evening news that their kids would want it and it wasn't fair... and that they should make an "adapter" so that the old NES system could play the new games. LOL

This has got to be the stupidest question I have ever seen on XDA.

Agreed
Sent from my R800i using XDA Premium App

PaulForde said:
This has got to be the stupidest question I have ever seen on XDA.
Click to expand...
Click to collapse
More so than this one?
http://forum.xda-developers.com/showthread.php?t=1370549

I like IPA... But I also like APK.
But which one's better ?
.........
There's only one way to find out......

DeadlyDazza said:
I like IPA... But I also like APK.
But which one's better ?
.........
There's only one way to find out......
Click to expand...
Click to collapse
whats that? u have me wondering now...

Lmao
Swyped from my Xperia Play via Tapatalk

Wow...
You guys need to calm down. It's just a question. You don't need to make him look like an idiot, you look like an idiot when calling him one. Just sayin.
Anyway, sorry, its not that easy. I wish it was that easy and often wondered the same thing at times.

Excpet the guy who ask the question your all idiota since devlopers are working on this just havent said whsts going on for a while it can be done just takes so much work

lyricalchaos said:
Excpet the guy who ask the question your all idiota since devlopers are working on this just havent said whsts going on for a while it can be done just takes so much work
Click to expand...
Click to collapse
Developers are working on what? An .ipa to .apk converter? Lmfao Android uses java. Its not even the same language as the iPhone
Sent from my R800i using Tapatalk

Rofl the other one is funnier lol can my xplay be 3d
Sent from my SPH-D710 using XDA App

lyricalchaos said:
Excpet the guy who ask the question your all idiota since devlopers are working on this just havent said whsts going on for a while it can be done just takes so much work
Click to expand...
Click to collapse
Spoken by someone who has never written a program in his life.
The logistics of this requires human interaction. Android programs are written in a COMPLETELY different language than iOS programs. While both programming languages can produce the same results, and obviously use the same graphics data and stuff like that, a human programmer must make that conversion as how they get to that end result is completely different.
No developers are working on this. Its a waste of time.

Question: if I remember properly, Android uses a virtual machine, called Dalvik, to run Java code. Could Dalvik actually run Objective C (iOS language) code somehow?

Logseman said:
Question: if I remember properly, Android uses a virtual machine, called Dalvik, to run Java code. Could Dalvik actually run Objective C (iOS language) code somehow?
Click to expand...
Click to collapse
programs that are coded in C run natively they dont run in a VM like android apps. Thats why its possible to use android apps on other platforms (providing they have the dalvik VM) like the blackberry playbook but you couldn't do that the other way around.

Logseman said:
Question: if I remember properly, Android uses a virtual machine, called Dalvik, to run Java code. Could Dalvik actually run Objective C (iOS language) code somehow?
Click to expand...
Click to collapse
The Dalvik VM is just a Java VM right?
Sent from my R800i using Tapatalk

I remember reading somewhere that it doesn't actually run Java code by itself...

AndroHero said:
The Dalvik VM is just a Java VM right?
Sent from my R800i using Tapatalk
Click to expand...
Click to collapse
Logseman said:
I remember reading somewhere that it doesn't actually run Java code by itself...
Click to expand...
Click to collapse
No its not just a Java VM and actually works quite differently than a normal Java VM. A regular Java VM works almost like an Emulator within the device running it. The Dalvik VM actually takes the program and uses its own class libraries, it converts some of the java files when its compiled into its own format. This saves space and memory usage, due to the programs obviously needing to be run on devices with limited memory.
The Android SDK also has an ungodly huge amount of libraries within it as well withe specific code design to do basically anything.

have an idea ask Google to try and create android to read IPA or other formats then android will be the best as developers will want to create games, apps and other things and make life easier for everyone as it will be like this in left hand iphone in right hand Samsung galaxy s2 really good android phone which will you pick me i would go for the Samsung as it's better as i have one but if it could run IPA. Iphone will probably unexistant just saying but it's best to ask google. for more easier methods to create games and apps just like ipa is really easy to create apps

Doing cool things with our ancient phone

Hi all,
Personally I still love my G1. It is the 1st Android phone so historically something that is interesting on its own.
I assume most of the G1 owners on this forum are having the same geekish interests as me and I was wondering what you are doing with the device that you concider 'cool' and can impress fellow geeks
Some things I think are impressive:
1. Having a rooted device with a custom very stable and fast Gingerbread firmware (ezgingerbread)
2. The droid2600 and Frodo C64 emulators that run great on the G1 with its keyboard.
3. Haven't done this myself yet, but seeing videos of debian run on the G1 was pretty impressive.
4. Eventhough it is probably not ready for daily use but having ICS on the G1 is amazing.

My G1 is running debian for a while now. But it mostly sits in drawer now, I just bring myself to sell it. No matter how much my wife nags at me.

Sirfearoth said:
My G1 is running debian for a while now. But it mostly sits in drawer now, I just bring myself to sell it. No matter how much my wife nags at me.
Click to expand...
Click to collapse
How well does it run? I guess you can't use it as a phone if you started debian?

I am using Frayo
And I use it mainly for forums and IRC and stuff

frankdrey said:
I am using Frayo
Click to expand...
Click to collapse
Running a customized rom you created yourself does belong in the 'wish I could say that' category.
Compiling programs from source does seem to be possible for the lesser educated with the scriptset smitna has created. http://forum.xda-developers.com/showthread.php?t=1444792
Not as cool as creating your own rom, but you have to start somewhere

I been using it mainly to try roms and stuff,
but every time a friend lost or have no phone, until they get a proper.
I give it to them to use it
and to try to convert them to android
so I use it for educational porposes
Im using frayo too (thanks )

tagm said:
Running a customized rom you created yourself does belong in the 'wish I could say that' category.
Compiling programs from source does seem to be possible for the lesser educated with the scriptset smitna has created. http://forum.xda-developers.com/showthread.php?t=1444792
Not as cool as creating your own rom, but you have to start somewhere
Click to expand...
Click to collapse
What do you mean?
I am really honestly using Frayo....
Froyobylaszlo is /the/ best G1 ROM and I use my mod for the (few) features it adds
Did I say I used that script?
Well...no, I didn't
And I can compile a ROM on my own from source thank you very much.
I just don't really see the need anymore since froyobylaszlo is as good as it gets
And instead of working my way up from aosp, learning along the way since I don't know a lot, I decided to just mod in features I like
And no I didn't use some scripts or rom kitchen
I tried using an apk compiler and a theme kitchen thing to fix certain problems, but then I decided against it...
Also, as of now I'm stopping working on my ROM and MOD and am gonna go for some pure PC development to work on my skills
I'm not too sure what you were trying to say but that's my response
If I misunderstood you, sorry
Edit: I think I did....now I'm debating wheter I should delete the above....
Sorry
Just ignore it all...I though you were saying that I shouldn't advertise here (I'm not btw I'm actually using it to post even)
And I thought you said I used that script and didn't do anything
Well, if you want to jumpstart into rom development with modding,, just open up the rom with winrar/7zip and start looking around
And at the google source website you can find how to compile a rom
The second option may require some programming skills

frankdrey said:
Well, if you want to jumpstart into rom development with modding,, just open up the rom with winrar/7zip and start looking around
And at the google source website you can find how to compile a rom
The second option may require some programming skills
Click to expand...
Click to collapse
Nice ideas. Might do some research, thx!
Was indeed giving you a compliment for your rom modding, maybe my indirect approach was not clear enough (I am not a native English speaker... that probably doesn't help as well)

tagm said:
Nice ideas. Might do some research, thx!
Was indeed giving you a compliment for your rom modding, maybe my indirect approach was not clear enough (I am not a native English speaker... that probably doesn't help as well)
Click to expand...
Click to collapse
Oh ok thanks
Sorry bout that...http://forums.androidcentral.com/hacking/6037-general-rom-faq.html
This is very useful
Go to "building a rom"
Idk if the link works, its been strange for me, so just scroll down to it
Whenever you edit a rom, you have to sign it...
That link has the files and directions
Also,

I've just had fun experimenting with my G1. I didn't root it myself, but I have learned a lot since I got it. I ran through about 10 or 15 different roms until I found one that I like personally (Ginger yoshi) and customized it the way I wanted. I think the coolest thing that I did on it running a SNES emulator (although I only did it once because of ridiculous lag). I started toying around with DOS box but that didn't go anywhere. I wasn't able to do much with it because it is my primary phone and it got extremely annoying to have to fix it every time I messed something up.
Anyway, it was tons of fun... then it broke :'( And now I'm getting my friend to give me his for free! and the fun will continue.

The Next Big Thing for S II (ROM Feature)

Hey!
I am kinda interested to see what S II users want for the next big Feature in all ROM or a suggestion of ROM.
Except the basic features which all ROMs have like Root,Init.d,BLN etc.
And if the suggestion is clicky I will try to develop the ROM ASAP! with the same feature. OF COURSE...DUH!

Taimur Akmal said:
Hey!
I am kinda interested to see what S II users want for the next big Feature in all ROM or a suggestion of ROM.
Except the basic features which all ROMs have like Root,Init.d,BLN etc.
And if the suggestion is clicky I will try to develop the ROM ASAP! with the same feature. OF COURSE...DUH!
Click to expand...
Click to collapse
Make a ROM that gives me the power of seduction.

NO one does simply ask question like this

How about Dual/Multi boot? I know that this has already been done by the great 'HellCatDroid' but it still has certain limitations and it's a proof-of-concept but when it comes to actual practice, it's not possible to use it. May be someone could design a 'multi' boot loader (/bootmanager?)

Find a way to recover the hidden 500 meg partition on our phone and use it for something useful.
But I still say power of seduction.

No wakelock implementation of BLN...

Make a rom which has better battery life than all other roms out there

I want my phone to implement the latest CM9 commits each time I reboot. I also want it to have a kernel built from source.
I'll keep dreaming.

kwankl said:
No wakelock implementation of BLN...
Click to expand...
Click to collapse
This would be good.

Miui based ROM with built in app drawer
Sent from my GT-I9100 using XDA App

AOSP ICS with everything working. No other requests.

mudferret said:
I want my phone to implement the latest CM9 commits each time I reboot.
Click to expand...
Click to collapse
just talking here, but this isn't too far fetched. on a fairly complicated setup, you can actually accomplish something similar with: cronjob to compile CM automatically on your linux computer + ClockworkMod scripts (Koush might have removed this in recent recoveries, not too sure) + Tasker. strictlyrude27 and brandall used to backup their ROMs automatically with Tasker executing shell commands, so flashing a ROM was/is probably possible. Just figure a way to get the compiled ZIP over to your SD card (probably rsync) and have Tasker execute shell commands on a reboot..

karendar said:
Make a ROM that gives me the power of seduction.
Click to expand...
Click to collapse
I have something in my trousers that does that .
jje

JJEgan said:
I have something in my trousers that does that .
jje
Click to expand...
Click to collapse
Bet it hurts when you plug it in for charging though...

gpat_XDA said:
AOSP ICS with everything working. No other requests.
Click to expand...
Click to collapse
Thats what we need the most right now! +1

An exchange email application that doesn't drain battery like the stock Samsung app on active sync.
It needs the sources to fix but no suitable sources have ever been released to fix the bug.
Even the market ones drain battery.
I'll keep dreaming that one day we'll get a battery friendly exchange application with push.
And no I won't get a blackberry I had one before and as well as it works the whole o/s is severely lacking.
Sent from my GT-I9100 using Tapatalk

I have already done the Next Big thing for S II
http://bit.ly/bb7dhd

sahibunlimited said:
I have already done the Next Big thing for S II
http://bit.ly/bb7dhd
Click to expand...
Click to collapse
Rick Rolling is so 2008.

mudferret said:
Rick Rolling is so 2008.
Click to expand...
Click to collapse
But sir u have been RickRoll'D
NVM

sahibunlimited said:
But sir u have been RickRoll'D
NVM
Click to expand...
Click to collapse
lol!! me too