Hi,
I am trying to build my own Android images, which I can do fine on my system by following Google's instructions. I have built the latest source tree and can run it in the emulator etc no problems.
What I want to do is alter some of the core apps to add/remove features to suit my needs. I can do this, again by following Google's instructions, but it doesn't give me the ability to debug the app, as per a standard Android SDK application.
Is there a way to do this, because not being able to debug and step through the source is a really big hindrance when coding??
Any help would be very appreciated. Also, I can then make a nice guide for people if it works out.
Rich
I've read the other threads about this but there is no help to be found there unfortunately.
I've been playing with App Inventor because I wanted to avoid learning Java but my think now is that seeing as I do JavaScript/PHP/mySQL and HTML/CSS anyway I might as well do my app development properly.
I've been following the instructions at the official developer.android.com site.
and the part where I have the problem is with Eclipse - at step 1 on that page. I've installed the JDK but when I try to install Eclipse I get an error telling me that there is no Virtual Java machine in the eclipse\jre\bin\ folder.
Well I'm following the instructions so what can I do about this? I don't even understand the error. Is there supposed to be a file in this folder, a folder which a.doesn't come with the standard Eclipse .zip file and which b.doesn't exist at all!
I tried this all before some time ago and got the same problem. At that time I couldn't even use App Inventor because of some JDK/JRE problem but I un-installed and reinstalled Java and App Inventor is working now.
This is one of the most frustrating computing problems I've faced because I've searched all over for an answer and there is nothing out there. Frankly I'm a little surprised at how poor the installation documentation is
The only thing I can think of is I have the wrong version of Eclipse. Which exact one is everyone else using?
Hello Subjective Effect. There is not a folder named eclipse\jre\bin in eclipse installation folder. The version i m using is eclipse-helios. I was not faced the problem you have.
I've solved that part of the problem by downloading a different version of Eclipse. It is a Helios version and is the one with Java. The installation instructions are not clear on this.
I now have another issue but I'll try work that out for the time being.
So I've no idea (again because the instructions are so poor) what to do about this.
I'm on the Android Developers site and trying to start the Hello World tutorial. I'm already stumped at the stage of creating a New Project because after I set up Project name, Application name, Package name and Create Activity clicking "Finish" gives this error:
[2010-10-28 01:33:03 - HelloAndroid] ERROR: Unable to open class file C:\workspace\HelloAndroid\gen\com\subjectiveeffect\helloandroid\R.java: No such file or directory
The reason I think the docs are poor is am I supposed to have created this directory or does Eclipse create it for you? And if it's supposed to be created for you what am I doing wrong?
Subjective Effect said:
So I've no idea (again because the instructions are so poor) what to do about this.
I'm on the Android Developers site and trying to start the Hello World tutorial. I'm already stumped at the stage of creating a New Project because after I set up Project name, Application name, Package name and Create Activity clicking "Finish" gives this error:
[2010-10-28 01:33:03 - HelloAndroid] ERROR: Unable to open class file C:\workspace\HelloAndroid\gen\com\subjectiveeffect\helloandroid\R.java: No such file or directory
The reason I think the docs are poor is am I supposed to have created this directory or does Eclipse create it for you? And if it's supposed to be created for you what am I doing wrong?
Click to expand...
Click to collapse
Mine seems to have that error no matter what I type in.
So what have you done about it? Or can I continue without worrying, is this a trivial error message?
1) you should download Eclipse 3.5.2 as Helios is not supported by Android plugin yet.
http://www.eclipse.org/downloads/packages/eclipse-classic-352/galileosr2
2) R.java problem should go away if you restart eclipse
Also, to start with better use the existing sample project HelloWorld rather than setting up your own.
This is a common known bug. You can use the latest eclipse version, once you setup a project, you will have to go under project properties and choose compiler version 1.6, which is set to 1.5 usually.
Tha will solve the problem, because i was facing the same a few days ago when starting to mess with SDK and Eclipse.
I had a similar problem and gave up for awhile and when I came back to it I found out that I didn't have my paths set correctly for the java jdk, not sure if that is it but it worked for me.
I find if I restart Eclipse it fixes things.
I've been playing with layouts!
Way back when, I could run a c# compiler on my Windows Mobile phone and create apps. I think it would be fun to do on-device "compilation" on my Desire Z too.
I'm not asking for an IDE -- just something that can take Java source code and XML files, compile to bytecode for Dalvik and produce an .apk -- all on the device itself.
Is this possible?
OK -- we'd have to both a javac (java compiler) and a dx tool running on the device to do this. The first compiles the java source, the second takes that file and converts it to Dalvik bytecode.
Anyone else interested in this?
I'm very interested too. I tried sl4a but it's limited for now.
Sent from my Desire HD using XDA App
Dexify java compiler
I'm also very interested!
I develop in Java for the Eve VM on Windows Mobile: [www t-arn com/software.htm]
but for this I needed to install a JavaVM on the device.
But it should be possible to dexify the java compiler. I found following post:
[www ist-music eu/developer-zone/documentation/phoneme-and-osgi/music-on-android]
The porting of OSGi requires the dexification of the OSGi bundles. This is a process which makes any JAR file (compliant with Java VM) compatible with Dalvik VM. It basically consists on adding a new file, classes.dex, into the JAR file. To dexify each OSGi bundle, a two-step process is required by using the Android SDK tools. In windows, the process would be:
* Create the classes.dex file associated to the JAR file:
[ANDROID_SDK]\platforms\android-1.5\tools\dx.bat --dex --output=%CD%\classes.dex my_bundle.jar
* Incorporate the classes.dex file into the JAR file:
[ANDROID_SDK]\platforms\android-1.5\tools\aapt.exe add my_bundle.jar classes.dex
Now, the dexified bundles work on both VMs: Java VM and Dalvik VM.
Click to expand...
Click to collapse
I guess, we could do that for javac. If this does not work, we could try another Java compiler:
- EJC: [thecoderlounge blogspot com/2010/05/ecj-eclipse-java-compiler.html]
- kopisusu: [klomp org/KopiSusu/download.html]
I have no idea how to dexify the dx tool, though :-((
Hope to hear more from you guys
Tom
I have not yet gotten the Android SDK (nor a device...) but it seems that the dx tool itself is written in java. There is a dx.jar in the SKD. This one might already be dexified...or we could dexify with itself.
Tom
On-device development & compiler on a server...
Hi guys, I'm new to this Forum - just got my Archos 101 and now I'm searching for some more fun with it ;-)
So I really liked you guy's idea of having a compiler on the device itself - especially since the java compiler's really fast, so no doubt it can run on a smartphone...
I was really tempted by the open source "Open Blocks" library (education.mit.edu/openblocks) from some of these "Lifelong Kindergarden" people at the MIT... they're having this neat programming environment for teaching children programming, where you can drag/drop your source code like Lego...
Here you can have a look how the programming looks:
education.mit.edu/webdav/How%20to%20Create%20a%20Procedure/How_to_Create_a_Procedure.html
Now even google is using a similar thing, probably the same sources for their "App Inventor" (appinventor.googlelabs.com/about/), but you can only develop online at a real pc, then the .apk file is packaged on the server and downloaded to your android device...
So that's practically another way of having stuff compiled "on your device" - you could do the the development on a device and then have a server dedicated for a fast compiler and dx run...
Basically, I'd say that's the perfect system to write quick programs on a touchscreen device, especially when it's a bit larger tablet...
So if anyone wants to join in, I think I'm really keen on trying to port this OpenBlocks thing to the android screen ;-)
Cheers,
wowbag
Java IDE on Android
Hello everybody
I have just finished the latest version of taJavaIDE (0.3.0)
This APK is meant to become an Android development tool with which you can create native Android apps (APKs) ON the Android device itself.
What is working so far (on my Desire HD):
- Eclipse compiler for Java is integrated and working
- dx tool is integrated (not yet tested properly)
- BeanShell Interpreter is integrated and working.
You can write your own BeanShell script, store it on your SDCard and automate
the build process with it.
What is NOT yet working:
- aapt
- apkbuilder
- jarsigner
- zipalign
apkbuilder and jarsigner should not be a problem. I think, I can integrate those in the same way I integrated ecj.
As far as I know, zipalign is not absolutely needed (I might be wrong here, though).
My biggest problem is aapt which is not a Java application but a C++ application. To make it run on Android, you would need to port it to Java (looks like a REAL challenge!) or use the NDK to create a native library that you could then access from the APK.
I have no experience with the NDK and I also don't have the necessary build environment, so I would really appreciate if someone would help me out here!
Anybody interested in contributing?
Tom
Wow, thanks for getting this started, t-arn!
It's been forever since I did any C++, but I'll take a look at aapt and see what I can figure out.
Hopefully, a true C++ programmer will come along and set us straight
I'm very interested in this project and I would be willing to try to help out if you need it. I'm a second year software engineering student and I'm currently on a work term where all of my work is with android. I may not be of much help but at least I think I have some idea what I'm doing so let me know.
you are correct in saying that zipalign is not necessary. we only need it if we want to sign the apk in release mode(for publishing it to the market). We could just use debug mode and everything would be fine. I'm sure that if someone wanted to release an apk to the market, they could just copy the files over to their pc and zipalign it there. We would still be able to use the apk on the device without using zipalign.
t-arn said:
- jarsigner
Click to expand...
Click to collapse
Serison has an application on the market to sign APK's. Just thought I would let you know it is possible.
I would like this as well, as my phone has a physical keyboard and typing code isn't that bad on it - atleast not for minor edits/tweaks
JavaIDEdroid open source project
Hello everybody
I have created an open source project for JavaIDEdroid:
http://code.google.com/p/java-ide-droid/
Everybody is welcome to join the project (and hopefully contribute to it!)
As soon as I have cleaned up the code a little bit, I'll upload the source and the current APK.
For further questions and discussions, please join the java-ide-droid group. You'll find the link on the project's home page.
See you there!
Tom
Sounds pretty promising,looking forward to give it a try！
Sent from my Dell Streak using XDA App
Sounds possible, if you have the right components. I would love this. Would definitely donate to whoever got it working easily and 100%.
Very interesting project
Look nice. Downloading now.
I have wanted this since I first got an android phone.
I ended up using a virtual debain command line running OpenJava to compile and run the stuff. But if i can do it without that hastle in one app, I will LOVE you.
Edit: I tried it out. Mind explaining how to make a beanShell script? on the ECJ it always gives me a security exception even with just -help.
Code:
java.lang.SecurityException
at java.lang.System.setSecurityManager(System.java:610)
at com.t_arn.JavaIDEdroid,.DE.fnCompile(IDE.java:44)
at com.t_arn.JavaIDEdroid.MainActivity.fnCompile(MainActivty.java:167)
at com.t_arn.JavaIDEdroid.MainActivity.tabCompile_btnCompile(MainActivity.java:137)
......
Done in 1305348377 sec.
Please join the JavaIDEdroid support group at http://groups.google.com/group/java-ide-droid and re-post your question there.
I'd like to keep discussions there.
Thanks
Tom
very interesting, ill join the group, i can make the native lib for the aapt.
I would say get gcc working on the device then you can compile anything. You can compile a javavm. A native binary. Etc. If gcc can be compiled and work then all programs most likely can be compiled on the device assuming the proper libs are there to compile against.
Sent from my Incredible using Tapatalk
I have programmed in java for quite some time, and am decent at android apps.
However, i have two questions about developing on my device (rooted samsung captivate).
First, how can i get dev tools to run correctly on my phone. I have installed it as stated in "developer.android com/guide/developing/debug-tasks html#additionaldebugging". However, when clicking on Dev Settings it crashed with HARDWARE_TEST security exception. I have read that you need to sign/run it as system.
Is it possible to run it on my rooted captivate? if so how do i install it as system or find the system signature to sign it.
My other question is about programing, compiling, and running android applications from a device. I can take my .apk and unzip it. Then edit any resource files. Then rezip and sign it. However if i want to replace the actual code i need to compile it. I can use an online java compiler but i need to convert it to android format.
I know that dx.bat does this by using dx.jar . I can add dx.jar to the referenced libraries of my app. However i cant figure out what to do past there. Is what i am attempting even possible?
Thanks for your help.
There's a couple threads in this forum from folks like me who want to do this. Perhaps you can help us figure it out
Step one is I think to get an java compiler running on the phone. Then to make a version of DX that can run on the phone to convert the class to .apk
Thanks. in normal java programs you can use "com.sun.tools.javac.Main.compile( new String[] {args} );" found in the "<sdk>/lib/tools.jar" to compile a program. And dx.jar is what is used to covert it to android, however i do not know what to call in it.
We just need to find a way to get these jars to work on android.
Hi all,
I just got my Smartwatch and I want to start playing around with the SDK. I downloaded everything and installed it (Android SDK, Sony Extra SDK, Sony Device profiles, Eclipse). I can create new Android projects and I see that I can compile with Sony Add-on SDK (API 16). I keep getting these errors when I try opening up the sample projects (EightPuzzleExtension and MusicPreferenceActivity):
The import com.sonyericsson.extras.liveware.aef cannot be resolved
I figured that the project can't find the right libraries or whatever. I don't know where to go from here....any help would be appreciated.
PS - Are there any good tutorials/guides on developing for this?
Thanks in advance!
demonzrulaz said:
Hi all,
I just got my Smartwatch and I want to start playing around with the SDK. I downloaded everything and installed it (Android SDK, Sony Extra SDK, Sony Device profiles, Eclipse). I can create new Android projects and I see that I can compile with Sony Add-on SDK (API 16). I keep getting these errors when I try opening up the sample projects (EightPuzzleExtension and MusicPreferenceActivity):
The import com.sonyericsson.extras.liveware.aef cannot be resolved
I figured that the project can't find the right libraries or whatever. I don't know where to go from here....any help would be appreciated.
PS - Are there any good tutorials/guides on developing for this?
Thanks in advance!
Click to expand...
Click to collapse
We had the exact same problems. We created a project which included SmartExtensionAPI and SmartExtensionUtils. What worked for us is, we checked
Project Properties -> Android -> Library -> Is Library
Click to expand...
Click to collapse
for both "projects".
Then we needed to add the generated jar-file from SmartExtensionAPI to both SmartExtensionUtils and our project. You can do that easily by clicking on one error in the console, then scroll up to the import, which can not be found. Then click on the red x next to it, and chose the proposed solution "fix project setup". You then can chose the library itself, or the generated jar, to add to the project setup. Adding the jar worked for us.