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Hello!
Thanks for taking the time to help!
So i am trying to create my own rom for the nexus s, and I am almost done setting up the environment on my debian Linux vm. I was wondering though, is there some sort of step by step tutorial to get the android source for debian? I'm stuck on trying to get the correct repositories.
Also for rom building, what exactly do I have to change once I get the source?
One last thing, are there any good books/tutorials for rom/kernel building? I'm still trying to improve my c and Unix skills
Thanks!
Sent from my Nexus S using XDA App
I found many good books at google.. including about java, linux, c...and much more
So if this is a stupid question - please be kind.
It seems the Prime has the power to run the full Java instead of the phone based version.
I noticed this the other day when I was trying to run a java video app from within BlackBoard for one of my assignments. I just get a bunch of symbols at the top of the frame and it extends the screen endlessly to the right.
So is adding the full java something that can be done in a new firmware update or be a part of a rooting package of the future? It sure would be nice to take advantage of the power of this tablet by adding the upgraded java.
Thoughts? Suggestions? Am I crazy?
Dalvik is a full JVM, it's just that Android doesn't implement a lot of the Java libraries dedicated to writing desktop apps. It might not be too much work to get, e.g., hidden Java applets running. It would be a lot of work to get Java applications with graphical interfaces working.
I think it'd be cool to run a Minecraft server off my tablet... but that's just me.
Noxious Ninja said:
Dalvik is a full JVM, it's just that Android doesn't implement a lot of the Java libraries dedicated to writing desktop apps. It might not be too much work to get, e.g., hidden Java applets running. It would be a lot of work to get Java applications with graphical interfaces working.
Click to expand...
Click to collapse
But this tablet has the horsepower to run it if it were done, correct? I'm just thinking quad core tablet- a GB of ram. Seems like a ripe apple for the developers to add something a little more tricked out in the software now that there is hardware that would support it.
Of course I am not a developer, but my understanding is java is scaled back due to hardware limitations. The Prime is a beast of a tablet. What would it take for this to happen?
redraider II said:
What would it take for this to happen?
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Click to collapse
A lot of time and money? Months of work at an absolute minimum. I don't know all the missing APIs, but at least pretty much all the graphics stuff from desktop Java is missing on Android.
Noxious Ninja said:
A lot of time and money? Months of work at an absolute minimum. I don't know all the missing APIs, but at least pretty much all the graphics stuff from desktop Java is missing on Android.
Click to expand...
Click to collapse
Oh crap. Well..... I suppose that hope just went out the window.
I am happy with the Prime as it is. I was just curious about the possibilities of taking it to the next level java wise now that there are devices capable of running it.
I see you are in SA, Noxious. I'm just up the road in Austin. Have to come down there every other month or so to Methodist Transplant hospital. Had a liver transplant almost 5 years ago now. Graduated from Judson.
Thanks for your replies.
RedRaider II
You can run Java SE and even a JDK but you lose Android integration. Example: I have JRE/JDK and most of the Android SDK running on mine, in a Debian chroot. All I am missing seems to be a couple x86 C/C++ programs that I don't know where to find the source for, otherwise I could get them ported to ARM and do Android development on my tablet with the usual build system (not what terminal ide does).
But note that if you want to do GUI crap in Java, like AWT/Swing/JWT, then you need the x11/vnc stuff or to push the built code to another machine you can remote into. Running headless Java code is also possible via dalvik (just like the Android SDK does for what goes into .apk files) in some cases but I would not want to test complicated parts of core libs and classpath dancing.
Sent from my Transformer Prime TF201 using Tapatalk
Run Linux (ARMel or ARMhf) OS ontop of Android and run "ARM_Linux_Moder" from the following link after cloning it to the Linux file system
https://github.com/S0AndS0/Debian-Kit-Mods
Full directions are in readme file and I've a guide on xda and google docs to set up Linux on Android using Debian Kit.
Currently you can run JDK hard or soft float on Android and run almost any .jar file or java program that runs on PC Linux OS's using the scripts provided and install Java dependent software I've tested and scripted installers for.
I'll be working on Android SDK and NDK soon.
Sent from my SPH-D700 using xda app-developers app
Khyrdantai said:
I think it'd be cool to run a Minecraft server off my tablet... but that's just me.
Click to expand...
Click to collapse
I think it would be great too
I'm wondering what are the steps I should take to learn/know how to develop apps for Android OS.
It would be very appreciated if you would consider me as a complete nooblet and advised me what I should learn/study.
For example, first thing I assume I should do, is study to code/language for Android platforms. So what is it?
What are the necessary development environment required? (Linux PC?)
My ultimate goal is to be able to create a launcher (ex. Go Launcher Ex).
I'm willing and able to invest my time into properly learning how to develop apps for Android, and I just need some help on an outline of a
syllabus, per say, of how I should progress with my studies.
On another note, I was wondering what the difference is between Launchers and Themes?
I was reading up on this Theme guide http://forum.xda-developers.com/showthread.php?t=916814 and it got me wondering if this only pertains to themes
or ADW launcher?
As you can see I'm quite confused
Thank you for your time.
Download SDK and start looking at the examples. You'll find an excellent step-by-step tutorial at developer.android.com/training/basics/firstapp/index.html
http://www.xda-developers.com/xda-tv-2/how-to-build-an-android-app-part-3-arduino-development/
refer this series of 5 awesome episodes by Adamoutler
Thank you for the replies
I will look into every mentioned content.
Linux seem's the right choice, for app development and ROM development, i personally use Linux for ROM development, kernel compiling also most of tutorials are based on Linux, and for app development i use windows, you can do both on windows but i prefer a full Linux OS that Cygwin for more complex Android stuff.
hmmm, as I stated above, my ultimate goal is to create a launcher of my own which I can create themes and customize at will.
Launchers fall into the Apps category if I'm not mistaken, so I wouldn't need another testing platform, and just use my trusty ol' PC with Win 7 x64, right?
Creating Launchers would be an 'Advanced' step in App development. First you have to get used with the Eclipse and android-sdk, debugging, editing and modifying the xml's etc. So I'd suggest you to take some sample tutorials based on App development. If you have enough knowledge in Java, then its so easy. But getting straight into creating Launchers would be slightly difficult IMHO.
Anyways I've created some Threads (You can see by visiting my Profile) based on beginner level app development. If you're interested you may refer and do as mentioned in the guide.
~Cheers
So the initial step I should take is learn comprehensive Java.
Thanks for the input.
coolsandie said:
Creating Launchers would be an 'Advanced' step in App development. First you have to get used with the Eclipse and android-sdk, debugging, editing and modifying the xml's etc. So I'd suggest you to take some sample tutorials based on App development. If you have enough knowledge in Java, then its so easy. But getting straight into creating Launchers would be slightly difficult IMHO.
Anyways I've created some Threads (You can see by visiting my Profile) based on beginner level app development. If you're interested you may refer and do as mentioned in the guide.
~Cheers
Click to expand...
Click to collapse
I started learning not to long ago as well, and I have found that youtube is pretty good. I can't sit and read books for a decent amount of time, so videos really help me. Here is one I have been watching :
http://www.youtube.com/playlist?list=PL2F07DBCDCC01493A&feature=plcp
or this bootcamp series is pretty good.
http://www.youtube.com/playlist?list=PLE08A97D36D5A255F&feature=plcp
I downloaded all the videos so I can watch whenever and jump around. Feel free to pm me, I have some more resources...
Just picked up a Java book :fingers-crossed:
In addition, looking into various Java beginner tutorials to back up the readings.
Hopefully, after I gain some basic understanding about Java (language), my transition into app dev for Android will be easier
AER0 said:
Just picked up a Java book :fingers-crossed:
In addition, looking into various Java beginner tutorials to back up the readings.
Hopefully, after I gain some basic understanding about Java (language), my transition into app dev for Android will be easier
Click to expand...
Click to collapse
If a Launcher is your ultimate goal, go with Java.
If you would also settle for lesser goals like simple timer apps, barcode scanner apps etc, trash your Java book.
Start with Python and the Python for android. You will be able to programm your first semi-sophisticated apps within a week.
AER0 said:
Just picked up a Java book :fingers-crossed:
In addition, looking into various Java beginner tutorials to back up the readings.
Hopefully, after I gain some basic understanding about Java (language), my transition into app dev for Android will be easier
Click to expand...
Click to collapse
i can suggest a few books...java for android developers , the android cookbook , linux in a nutshell , linux kernel by o'reily
Try to modify some android app/games first just like what im doing now:good:
Learning Java is for sure the first step, then look at the SDK examples.
Will do :good:
Thanks for the suggestions
Can I use android app on ubuntu Phone?
No. Ubuntu for android would run its own apps I would assume.
pureexe said:
Can I use android app on ubuntu Phone?
Click to expand...
Click to collapse
no u cant because ubuntu is without java virtual machine...
I bet the devs will have some way to hack it to be able to run android apps.
Me
jon7701 said:
I bet the devs will have some way to hack it to be able to run android apps.
Click to expand...
Click to collapse
Well I want to be the first one to do it!
---------- Post added at 06:10 PM ---------- Previous post was at 05:53 PM ----------
jon7701 said:
I bet the devs will have some way to hack it to be able to run android apps.
Click to expand...
Click to collapse
Hey U dont need to hack ubuntu Its open!! So there gonna be some way to run android apps on your phone!
Cant we load up the Android SDK and run stuff that way? I know it would be slower than molasses but its a start....
I would imagine running bluestacks on a windows virtual machine would get the job done.
Ubuntu running Windows running Android on a phone. Crazy!
Sent from my Nexus 7 using xda premium
mvgadagi said:
no u cant because ubuntu is without java virtual machine...
Click to expand...
Click to collapse
Couldn't one just install a Java Virtual Machine?
I think we should wait for sources before starting this kind of discussions.
thenewshaft said:
I would imagine running bluestacks on a windows virtual machine would get the job done.
Ubuntu running Windows running Android on a phone. Crazy!
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
I don't think you would be able to use a Windows because the processor would still be 16 bit
hay just wait!!!!!!!!!!!!!
u can install android apps just so easy
install wine for windows emulator
install blue stack throw wine
run android app from wine
but i i think there will be much easy way than that in the future cus the system is not out yet so i think it will easy cus ubuntu or linux in fact is open source
neonlove said:
u can install android apps just so easy
install wine for windows emulator
install blue stack throw wine
run android app from wine
but i i think there will be much easy way than that in the future cus the system is not out yet so i think it will easy cus ubuntu or linux in fact is open source
Click to expand...
Click to collapse
[sarcasm]
Yeah sure x86 apps works completely fine on a arm operating system which we don't even know if there is going to be a full ubuntu running on the background. [/sarcasm]
I think the main goal is running web apps on the OS not java or objective-c, so even if it has some sort of java support it would probably suck.
Android app on Ubuntu should be doable
Looking around it seems android apps don't actually use the android runtime. they are running on a vm called dalvik which itself is forked off of zygote. Both running on the Linux kernel. According to stackoverflow.com/questions/1297678/how-do-i-make-isolated-dalvik dalvik can be compiled separately from android. Shouldn't be too tough. Once I get full up Ubuntu running on my Next9p I'm going to attempt this. It would be nice to get a couple of android apps running on Ubuntu.
leventccc said:
[sarcasm]
Yeah sure x86 apps works completely fine on a arm operating system which we don't even know if there is going to be a full ubuntu running on the background. [/sarcasm]
Click to expand...
Click to collapse
Mark Shuttleworth said that this is the full Ubuntu OS just repolished and trimmed down for mobile.. Btw I think .deb packages will work.
darkforester67 said:
Mark Shuttleworth said that this is the full Ubuntu OS just repolished and trimmed down for mobile.. Btw I think .deb packages will work.
Click to expand...
Click to collapse
I hope deb packages will work but I don't expect too much because its still mobile and it's designed to run light and small apps. Of course compiling a kernel for my device, on my device would be very cool but probably not gonna happen
neonlove said:
u can install android apps just so easy
install wine for windows emulator
install blue stack throw wine
run android app from wine
but i i think there will be much easy way than that in the future cus the system is not out yet so i think it will easy cus ubuntu or linux in fact is open source
Click to expand...
Click to collapse
WINE is a recursive acronym which stands for WINE Is Not an Emulator. It translates Win32 API calls into Linux API calls, but it does not emulate a different processor architecture. You couldn't use it on an ARM processor to run apps compiled for X86.
Given the shared kernel and drivers and open-source nature, if Canonical releases the Galaxy Nexus images and source in a timely fashion, there will probably be enough developer interest for someone to bring Dalvik to Ubuntu mobile fairly quickly. The question is will it kill developer interest in building truly native apps for the Ubuntu mobile platform.
x86 on ARM
The question is will it kill developer interest in building truly native apps for the Ubuntu mobile platform.
Click to expand...
Click to collapse
The attractiveness of Ubuntu on these increasingly powerful "mobile" devices is the millions of applications already available in the repositories (Ubuntu's "app store"). All of which are already free downloads. Granted some of them will be more usable than others on smaller screens. But, given a 10 inch screen or bigger, almost everything should run just fine. Since Ubuntu has only one code base for all of their varying distributions, I'm looking forward to UI and efficiency improvements across the entire platform.
As far as x86 hardware emulation... there are a couple of projects doing some work on implementing at least a subset of the more than 700 x86 instructions as an application level translator. One Russian company (1) has a working translator, albeit a slow one. They expect to be able to release something usable in the next year or so. Also, there is a thread (2) on the winehq mailing list that discussed this very possibility last year. IDK how far it went or whether anyone associated with the wine project is actually working on this or not.
(1) computerworld.com/s/article/9232222/Russian_startup_working_on_x86_to_ARM_software_emulator
(2) winehq.org/pipermail/wine-devel/2011-April/089562.html
Qemu android is really fast with kvm on x86 in emulator. Choosing the custom screen resolution make it looks like SDL game. Can we do the same for arm to emulate android dalvik for apps? It can be just a separate package with android for ubuntu phone if seamless integration is impossible.
Of course you can run Android Apps in your Ubuntu on Android Desktop without Bluestacks or some sort of virtualisation...
Here are the facts:
http://www.youtube.com/watch?v=JISeFQ_1QzU 1:15 - Presentation by Canonical as you can see from all the Pictures with the Canonical Logo in the Image Viewer Application.
I am planning to develop launcher/home screen replacement, what is your recommendation for me to start?
Some questions that crosses my mind at the moment:
* What language I should use
* Any open source samples I can look at
* How to properly debug an Android app
* How to profile & optimise the app
I'm quite well-versed in programming, but for the desktop. I haven't ever created a program for Android, yet. So, I'm going to need some guidance here.
sent from Sony Xperia SP C5302 (stock 4.1, LB, root) via Tapatalk
pepoluan said:
I am planning to develop launcher/home screen replacement, what is your recommendation for me to start?
Click to expand...
Click to collapse
You'll have to do this in Java. You could possibly write parts in C++, but the base app will be Java. Get the Android SDK, it contains a small sample launcher app that can serve as a starting point. Since android is open source, you can also look at the code for the default launcher:
For debugging, I've personally used Emacs with jdb, because I cannot stand working with Eclipse. But Android Studio seems to be coming along nicely, and this might be your best bet when starting out.
pepoluan said:
How to properly debug an Android app
Click to expand...
Click to collapse
For work I've done, the output of the logcat has usually been enough to point me in the right direction for Java and C++. If you happen to do anything with the NDK, and stick with Eclipse, here's a guide mhandroid.wordpress(dot)com/2011/01/23/using-eclipse-for-android-cc-debugging/. If you're not comfortable with using other editors, I'd recommend Eclipse, but I despise it, like the poster above me.