Hi!
Is it possible to write programs using Java on an android device?
I would like to learn how to write code in Java, and it would have been at lot easier if I was able to do it on the go i.e on my SGS.
Does there exist some sort of program for Android devices that enables me to write Java code just like in Windows?
What about C/++?
thanks in advance
The answer is sort of. Most android apps are written in Dalvik, which is a type/variant of Java. The easiest way to write apps is to download the android SDK (software development kit) and Eclipse (a java app writing program). You can find a lot of good information at:
http://developer.android.com/guide/index.html
The instructions for how to download and set up the SDK are at
http://developer.android.com/sdk/installing.html
There are quite a few steps, but just carefully follow each one and you should be fine. Have Fun!
Related
Hello Guys,, Im Going 2 Install Linux " Ubuntu 9.10 " And i wanted 2 know if is that ( operating system ) the 1 i need for making rom's and such.
And if so then could anyone help me with the steps on how to create a rom.
im really getting serious about this soo please help.
and i have a cdma hero "sprint"
Rooted
Recovery Img 1.5.2
Rom: [Rom-dev] (2-18-10) AOSP 2.1 | Sensors Now Work by darchstar
Thankx In Advance
lonnie23 said:
Hello Guys,, Im Going 2 Install Linux " Ubuntu 9.10 " And i wanted 2 know if is that ( operating system ) the 1 i need for making rom's and such.
And if so then could anyone help me with the steps on how to create a rom.
im really getting serious about this soo please help.
and i have a cdma hero "sprint"
Rooted
Recovery Img 1.5.2
Rom: [Rom-dev] (2-18-10) AOSP 2.1 | Sensors Now Work by darchstar
Thankx In Advance
Click to expand...
Click to collapse
You should be okay using Ubuntu 9.10. I currently have that installed, but haven't done anything yet with it. Although, I actually plan on switching to Fedora 12 -- since I'm more familiar with the Red Hat distro's.
If you need help getting started, you should look into these tutorials below, provided and documented by Gbhil from Android Central.
How to create custom Icons:
http://forum.androidcentral.com/htc-hero-roms-hacks/6070-changing-hero-application-icons.html
ROM FAQ/How to Build ROMS:
http://forum.androidcentral.com/hacking/6037-general-rom-faq.html
How to setup Ubuntu for the Android SDK:
http://forum.androidcentral.com/hac...ramming-envrionment-using-ubuntu-windows.html
OR here:
http://www.futuredesktop.org/developing_android_apps_on_ubuntu.html
Gbhil does an excellent job explaining how things work and how to begin your journey with Android development, hope that helps.
I've used the links above to begin making a custom icon pack, and hopefully soon enough another AOSP ROM.
I use Ubuntu 9.10 for everything I do. Make sure you're root user in that by doing these commands in the terminal:
Code:
sudo passwd
*your root password here*
*repeat root password*
Then, log out of that user, and click "other" to log in. Type root for username, and the password you set with sudo passwd for password. Note, Ubuntu 9.10 is also referred to as Ubuntu Karmic or Karmic Koala, so those are the same as 9.10.
Thankx But could you help with more?
When i try to install the Sun's Java Runtime Engine (JRE) and Java Development Kit (JDK) thier both .bin files + i dont understand on how to make them work.
could you help?
lonnie23 said:
Thankx But could you help with more?
When i try to install the Sun's Java Runtime Engine (JRE) and Java Development Kit (JDK) thier both .bin files + i dont understand on how to make them work.
could you help?
Click to expand...
Click to collapse
I don't know about that, I just use the java built into ubuntu.
How did you set up yours then?
Doo you make roms and stuff??
Because i have a dual boot with my win7 and ubuntu
lonnie23 said:
How did you set up yours then?
Doo you make roms and stuff??
Because i have a dual boot with my win7 and ubuntu
Click to expand...
Click to collapse
All the links I gave you will give you the information to get started. Again, follow this think, it even says what its going to help you install:
We are now going to install these programs
• The Ubuntu Linux Desktop.
• Sun's Java Runtime (JRE) and Development Kit (JDK).
Java Runtime is only needed to run the Eclipse IDE. Android has its own optimized Java VM (Dalvik).
• The Eclipse IDE.
• The Android Software Developer's Kit (SDK).
• The Android Developer Tool (ADT), a special Eclipse plugin.
http://www.futuredesktop.org/developing_android_apps_on_ubuntu.html
If you want to test if Java works -- you can run the commands java --version, which java and echo $JAVA_HOME (which java and echo $JAVA_HOME should correctly state where you chose to set your environment variables when you run them). Otherwise you could open a text editor (I use VIM) and write the universal "hello world" in Java and test Java that way to make sure the program runs.
Lastly, everyone here is more than willing to help you -- but try to search for the information via Google, here on XDA, or other Android forums yourself first -- you'd be surprised that they probably already have your answer.
HeroMeng said:
I use Ubuntu 9.10 for everything I do.
Click to expand...
Click to collapse
I don't think Ubuntu 9.10 is bad -- but I've always worked with Red Hat/CentOS and at work we use RHEL servers, so Fedora is an easy switch for me.
Hey all I was wondering if someone could help me out in installing and setting up eclipse. I tried before and ended up installing something called glassfish3 or something like that so what would be ideal is a list of links to the downloads I need to get maybe in the order I need to install them in? =P It would really be greatly appreciated!
Thanks,
D3luSi0n4L
Anyone? Please! I have the JDK & Java & Eclipse installed and Eclipse will not startup, I get an error....
"A Java Runtime Enviroment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java Virtual machine was found after searching the following locations:
C:\eclipse\jre\bin\javaw.exe
javaw.exe in your current PATH"
Someone suggested that I need to install the SDK but I thought that was only needed specifically for Android? & Before i setup Android I'd like to have Eclipse fully functional to avoid and problems that could occur. I installed Eclipse for EE Developers or whatever, the biggest file they and I installed JDK 6 Update 21
Eclipse (Top One) : eclipse*dot*org/downloads/
Java : oracle*dot*com/technetwork/java/javase/downloads/index.html
Any and all help is greatly appreciated!
Sincerely,
D3luSi0n4L
I'm almost close of not asking any more questions but I had problems with apk manager, I got it right, and I had problems with Avabox, and I got that right but now I'm having problems with Eclipse. I installed basically both files of Eclipse the big file and the small fiile (I didn't know which one I needed).
when I open the eclipse program I get this message:
"Failed to load the JNI shared library : c:\program files (x86)\java\jre6\bin\client\jvm.dll
I don't know what this means. can someone help me? thanks.
Sorry I'm also a noob at installing eclipse, but thought this might be a good place to ask my question too. I found a tutorial on how to install everything (i.e. eclipse, JDK, and SDK) put it said I needed to change my PATH to point to /tools and now after doing that I can't open eclipse. I go the same error you did in your first post. I'm thinking I needed the other lines that were in the PATH, but now I don't know what they were.
If you follow the steps here, it is fairly simple and easy:
http://developer.android.com/sdk/installing.html
You have to download first de java JDK (jre is not enought) and then download and instal eclipse... Just follow the instructions on the link
Sent from my GT-P1000 using XDA App
I've gone through this and had eclipse up and running. Even created some AVDs. Here is the part that screwed it up though.
"On Windows, right-click on My Computer, and select Properties. Under the Advanced tab, hit the Environment Variables button, and in the dialog that comes up, double-click on Path (under System Variables). Add the full path to the tools/ and platform-tools/ directories to the path. "
D3luSi0n4L said:
Anyone? Please! I have the JDK & Java & Eclipse installed and Eclipse will not startup, I get an error....
"A Java Runtime Enviroment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java Virtual machine was found after searching the following locations:
C:\eclipse\jre\bin\javaw.exe
javaw.exe in your current PATH"
Someone suggested that I need to install the SDK but I thought that was only needed specifically for Android? & Before i setup Android I'd like to have Eclipse fully functional to avoid and problems that could occur. I installed Eclipse for EE Developers or whatever, the biggest file they and I installed JDK 6 Update 21
Eclipse (Top One) : eclipse*dot*org/downloads/
Java : oracle*dot*com/technetwork/java/javase/downloads/index.html
Any and all help is greatly appreciated!
Sincerely,
D3luSi0n4L
Click to expand...
Click to collapse
I downloaded the 32 bit version of eclipse and javaw.exe was not missing anymore. How do i use eclipse though?
Edit: I get it, JDK.
Hello, Developers!
Yes, I'm a Newb looking to get educated...
I have experience programming algorithms (VBA), but no experience with Linux syntax, nor Android app development.
In turn, I figure the best way to learn is to start from the very begining.
I'd like to learn, through step-by-step instructions (or someone working hand-in-hand with me), by begining with how to root a device.
I want to work from scratch by altering the existing files on my tablet, instead of using pre-packaged scripts, files, apps, or programs.
I have already installed (on my Desktop), what I believe to be, all the potentially necessary tools, such as: Android SDK, JDK, Eclipse, Android device drivers, Virtualbox, and Ubuntu.
So? What's next?
Which files do I need to start tearing into and examining to determine what alterations need to be made to enable SuperUser Root access?
Thank you in advance for your time and patience.
Equipment
Coby Kyros, MID9742
Android ICS 4.0.3
Someone please tell me page where how to install adt plugin for eclipse juno is described
Hi caponer, to do that u need to provide the url https://dl-ssl.google.com/android/eclipse from within eclipse. Then provide the location of android sdk. You do not need eclipse or adt to develop android apps though. You can use sdk instead.
Baaaaa I get http method not allowed error. Please help
That's because you used wrong url. Type https://dl-ssl.google.com/android/eclipse
That solved it. Thx
Its just hung on calculating requirements and dependencies
Wait
Ok I have installed the adt plugin - the ndk tools because some component was missing and now I am downloading sdk rev to resolve version issue.
Atta boy. No quickly write hello world app and post it
Dear all,
I'm trying to reconstruct the Andriod on my phone. So far i managed to download source code for Linux core including files like "mount, cp, modprobe,...", however I notices thete are other files in /system/bin like "am, pm, ..." which control the other layer of Android OS. How can I download the source code for these kind of files. Also in framework we have "am.jar" which seems to have direct relation to Java VM. Maybe it is better to also ask how Java VM works on Android. I do not ask about general knowledge because more or less I know how it works. Basicly I need to know which files are related to the process of running Apps on Android and what they do.
Best wishes.