[Q] Complete newbie "hello world" help - Android Software Development

Just been following the "hello world" tutorial on android developers, (hopefully i've installed all the right software) But I am getting an error when I choose "run" from eclipse.
The code as copied from the tutorial is;
tv.setText("Hello, Android");
setContentView(tv);
eclipse says "tv cannot be resolved" "java problem" on both lines?
Can anyone tell me where i'm going wrong ?
eclipse version "Eclipse Java EE IDE for Web Developers.
Build id: 20100218-1602"

You must have missed a line out somewhere from the tutorial - compare what you've got against the example again.
The error implies that the compiler doesn't know what "tv" is - it should've been defined and initialised on the previous line:
PHP:
TextView tv = new TextView(this);

I did yes I dont get errors now, but when I choose run it takes a loooong time for the screen to pop up and only displays "ANDROID" with a flashing cursor and not the "hello android" as displayed in the tutorial.
Also the screen shows no other icons at all I thought the screen would look like my galaxy s, maybe I need to set that up somewhere as well ?
Can anyone provide links to easier to understand step by step tutorials ?
Many thanks

The emulator will be booting a full version of the Android OS (assuming you set it up following the instructions in the tutorial) - it's well known to be very slow, and will sit on the boot screen for ages - just wait and eventually you'll see an Android desktop and your app should run. (Have patience - on my netbook it takes well over 10 minutes to boot!)
When you're done, DON'T close the emulator window, just minimize it. This way you won't have to wait all that time again next time you run your app, since the emulator will already been booted.
Also, you could put your phone into USB debugging mode, and run your code on the phone directly, which will be much faster!
(see http://developer.android.com/guide/developing/device.html )

Related

Exe files on Android?

This might be in another thread. I searched pretty extensively for an answer and can't find one. Is there an app or way to install exe files and run them on my Magic 32B? My phone is rooted and running Cyanogen's 4.2.5 I figured my phone does everything else, why shouldn't it be able to run exe files?
Sorry for the bump. I can access the exe file on my memory card with Linda File manager, but I don't know what the open the file with??? Linda File Manager gives me the option to > Open With... Any ideas?
Android cannot open Windows based files.......
WEAK!
One thing I have learned from xda is that if theres a will theres a way! Comon guys there has gotta be a way!
Android is not windows..
In theory you could port qemu or something and run it in that. But that would be so slow a turtle would think of itself as fast if it saw it
Sent from my Gingerbread on Sapphire using XDA Premium App
tvall said:
Android is not windows..
In theory you could port qemu or something and run it in that. But that would be so slow a turtle would think of itself as fast if it saw it
Sent from my Gingerbread on Sapphire using XDA Premium App
Click to expand...
Click to collapse
Agreed. I want to say someone got Wine to install in Android but could never get it to work right.
Sent from my LG-P500 using Tapatalk
The idea is sweet and innocent but is much more complex...
The "exe" files are binaries. The .exe extension is something windows has as a standard for postfix, and is not necessary for running binaries (linux does not use any postfix and therefor also Android).
So what is a binary?
It's a list of machine instructions which the intended cpu understands. Every cpu has it's own instruction set ( a language). You need to make sure that the list of instructions you are running can be understood by the cpu. Inside this list you will find special instructions which is called "system calls". They are not intended for the cpu but for the operation system which you are running on.
So to sum up;
1) to run windows binaries on Android you need to change to instruction set of the binary because the cpu you have is not the same as those running on the Android device. E.g. x86 cpu on computer vs. ARM cpu on mobile devices vs. PIC micro-controllers. So the binary does not speak the same language as the cpu.
2) You need to change the system calls because Windows and Android does not have the same system calls.
So as a final sum up, it's not easy to make those binaries to run on Android, specially those which has a instructions list bigger than 20-30 instructions... They are just to complex and sometimes not even possible!
The WINE project is shot of doing the exact problem. It will run the binaries and translate them on the fly for the operating system. It succeed most times and fail others. But it's a HUGE project and need a normal computer power for it to run. The devices we have right now, does not have the horse power to run such projects.
I hope the info shades some lights on the problem :0)
NB: i know some of the info is not 100% but it's REALLY simplified to give the general idea and complexity of the problem :0)
mumilover said:
The idea is sweet and innocent but is much more complex...
The "exe" files are binaries. The .exe extension is something windows has as a standard for postfix, and is not necessary for running binaries (linux does not use any postfix and therefor also Android).
So what is a binary?
It's a list of machine instructions which the intended cpu understands. Every cpu has it's own instruction set ( a language). You need to make sure that the list of instructions you are running can be understood by the cpu. Inside this list you will find special instructions which is called "system calls". They are not intended for the cpu but for the operation system which you are running on.
So to sum up;
1) to run windows binaries on Android you need to change to instruction set of the binary because the cpu you have is not the same as those running on the Android device. E.g. x86 cpu on computer vs. ARM cpu on mobile devices vs. PIC micro-controllers. So the binary does not speak the same language as the cpu.
2) You need to change the system calls because Windows and Android does not have the same system calls.
So as a final sum up, it's not easy to make those binaries to run on Android, specially those which has a instructions list bigger than 20-30 instructions... They are just to complex and sometimes not even possible!
The WINE project is shot of doing the exact problem. It will run the binaries and translate them on the fly for the operating system. It succeed most times and fail others. But it's a HUGE project and need a normal computer power for it to run. The devices we have right now, does not have the horse power to run such projects.
I hope the info shades some lights on the problem :0)
NB: i know some of the info is not 100% but it's REALLY simplified to give the general idea and complexity of the problem :0)
Click to expand...
Click to collapse
Just in addition, most programs aren't just based on the .exe file. DLLs and other files are needed for the program to run, attempting to port all this stuff to Android would most probably result in failing.
K3n H1mur4 said:
Just in addition, most programs aren't just based on the .exe file. DLLs and other files are needed for the program to run, attempting to port all this stuff to Android would most probably result in failing.
Click to expand...
Click to collapse
I just hope Android is so popular that, like turning Windows into Linux using Wine (excuse the metaphor or whatever that was), someone might persist with this no doubt huge endeavour. I'm sure I'm not alone in wanting to never run a Windows app in Windows ever again, nor kowtow to Apple's interface demands even though I'd like something as responsive, integrated and occasionally useful as an iSomething.
Android was my future salvation till my employer handed over a handy Win App recently that I can't really avoid using - well I could, but I'd have to work that much harder - fat chance! So I'm stuck with a Samsung XP netbook and WM6.5 on my HTC Touch HD until someone somewhere, or lots of someones everywhere, do a Wine for Android
Seriously, you want to pretend in some reality somewhere that someone will first create an x86 emulator for an arm chip that barely likes to play xvid files then on top of that use wine to run a mobile windows app rather than just use something similar or pay someone to write you something similar that runs natively on android?
Which do you think is the non-insane option?
you cant run it on android persay but you can download dosbox and run it that way sorry for the bump
work for now
For now install your exe app on a windows PC if you have one. And run something like team viewer. Won't look the best but you'll get basic function out of it.
Thanks for the suggestions (cellsafemode excepted! )
I ended up buying a couple of iPads and have installed VMWare View, ICAB HD and Slashtop/CamCam giving remote access to my Windows PC at home. Gets the job done - bit slower, but the small Windows-only app I need to run infrequently isn't a huge load on the hardware or the network. Saves carting a netbook around for just one small but important task, and I guess it's accomplishing much the same as the Android suggestions above. When my iPad enthusiasm wears off, I'll have an Android option
Found a Way
Ok, I got a way! You need root, and itll be very slow on a phone but faster on a tablet!!
http s : / / play . google. com / store / a pps / de tail s? id = com . galoula.LinuxInstall&feature=search_result#?t=W251bGwsMSwyL DEsImNvbS5nYWx vdWxhLkxpbnV4S W5zdG FsbCJd
1)Download Above Link remove spaces
2)On your new Ubuntu or whatever you chose get wine from winehq
3)Get your exe and presto!!
--DISCLAIMER--
I havent tried it so if it breaks your phone/tablet its not my fault... USE AT OWN RISK
nikhiljha said:
Ok, I got a way! You need root, and itll be very slow on a phone but faster on a tablet!!
http s : / / play . google. com / store / a pps / de tail s? id = com . galoula.LinuxInstall&feature=search_result#?t=W251bGwsMSwyL DEsImNvbS5nYWx vdWxhLkxpbnV4S W5zdG FsbCJd
1)Download Above Link remove spaces
2)On your new Ubuntu or whatever you chose get wine from winehq
3)Get your exe and presto!!
--DISCLAIMER--
I havent tried it so if it breaks your phone/tablet its not my fault... USE AT OWN RISK
Click to expand...
Click to collapse
Good luck finding wine compiled for arm and some windows programs built for the (currently nonexistent) arm version of windows
2Noob4U said:
This might be in another thread. I searched pretty extensively for an answer and can't find one. Is there an app or way to install exe files and run them on my Magic 32B? My phone is rooted and running Cyanogen's 4.2.5 I figured my phone does everything else, why shouldn't it be able to run exe files?
Click to expand...
Click to collapse
if your mobile does everything else then can you do multitasking just like people do in Nokia N9??
yes its possible ..
ohhh yaaa its possible to install .exe file on any android device ..
just follow these simple steps and you are done :
Step 1
Install a DOSBox app on your Android device. AnDOSBox, aDosBox and DosBox Turbo are three different DOSBox apps available from the Google Play store.
Step 2
Open the DOSBox app.
Step 3
Type "cd \foldername" into the command line, where "foldername" denotes the folder in which your EXE is contained. For example, if your EXE is in the Download folder, type "cd \download."
Step 4
Click Enter on your Android keyboard.
Step 5
Enter the name of the EXE file. You do not need to enter the .exe extension.
Step 6
Tap "Enter" on your Android keyboard.
Tip
The command-line interface is not case-sensitive.
mydevilace said:
ohhh yaaa its possible to install .exe file on any android device ..
just follow these simple steps and you are done
Click to expand...
Click to collapse
Excellent! Never say 'Never'!
I also see it's possible to run iOS apps on Android as well.
Wing Nut said:
Excellent! Never say 'Never'!
I also see it's possible to run iOS apps on Android as well.
Click to expand...
Click to collapse
yeaaahhhhh
Sent from my Micromax A110 using XDA Free mobile app
So this confirms exe files r able to run on Android its just slow . Only thing left to do is find a way to lighten it up some by reduced graphics n bmp files ?

Need help installing the Android SDK

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!

Can I download ADT manually

I've been messing around in google app inventor getting an idea for the flow of code and figured that it's time to step up to an actual coding environment.
So I went and downloaded the most recent SDK and eclipse. I installed all the available resources and revisions.
Then i hit a snag. The guide said that in order to properly set up Eclipse i need the ADT plugin. I opened the help menu and went to install new software and clicked on the add button. In the name section i put "ADT Plugin" and in location i put the exact web address they gave and it kept giving an error that said unable to connect to repository... i even tried http over https but still experienced the same issue. I entered the website enter my web browser in hopes that it would connect to a ftp server or start a direct download but unfortunatly it was a google site that was no longer available.
So i want to know if theres a mirror download somewhere that i can manually install to eclipse.
Also my eclipse info
Eclipse SDK
Version: 3.6.1
Build id: M20100909-0800
Sent from my futuristic phone
Yes mate, from here...
http://developer.android.com/sdk/eclipse-adt.html
Towards the bottom of the page it tells you what to do if the URL doesn't work.
johncmolyneux said:
Yes mate, from here...
http://developer.android.com/sdk/eclipse-adt.html
Towards the bottom of the page it tells you what to do if the URL doesn't work.
Click to expand...
Click to collapse
I freaking love you in a strictly platonic way.
I kinda feel like an idiot cause I didn't read farther lmao
Sent from my futuristic phone
ironlood said:
I freaking love you in a strictly platonic way.
I kinda feel like an idiot cause I didn't read farther lmao
Sent from my futuristic phone
Click to expand...
Click to collapse
lol - glad to help mate.
Okay just ran into another hitch
I downloaded the zip file and go to install new software but instead of the website i use the archive. It provides me with a list of 3 options
Android DDMS
Android Development Tools
Android Hierarchy Viewer
I put a check in each box and click next it says calculating Dependencies and requirements then i get an error that says
Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 8.0.1.v201012062107-82219 (com.android.ide.eclipse.adt.feature.group 8.0.1.v201012062107-82219)
Missing requirement: Android Development Tools 8.0.1.v201012062107-82219 (com.android.ide.eclipse.adt.feature.group 8.0.1.v201012062107-82219) requires 'org.eclipse.gef 0.0.0' but it could not be found
Now this has me at a loss. If i downloaded the Archive in theory i shouldn't have to connect to any more sites to install the plugin. I want to know if there is a way to drag and drop the contents of the archive to a plugins folder then open eclipse and refresh the installed plugins in order to show that ADT has been installed.
Not sure if the 64 bit side of things could be an issue (either for you or for anyone), but this guy seems to have solved the same problem...
http://superuser.com/questions/221944/huh-jdk-not-found-on-windows-7-64-bit
Hope it helps mate.
KK ill see if i can follow this and come up with a fix to my issue. not too sure how this will work since im running a 32bit system with windows Vista
I'm still experiencing the same issue with eclipse unfortunately, i even downgraded to Galileo instead of Helios thinking that it was an incompatibility issue with the newest version or the most recent version. I even tried dragging the .JAR files in the ADT zip into the eclipse folder in an attempt to get Eclipse to recognize the plugins without having to install them through the "install new software" dialog.
Everytime I try to connect to the download server it gives me a message that says An exception stack trace is not available. Or Unable to connect to repository http://dl-ssl.google.com/android/eclipse/content.xml
Connection refused: connect

[TOOL] NEW! Derp -- scriptable, platform-neutral device installer

DERP (Device Environment Replacement Program)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
initial pre-alpha version 0.001
(Aug 3, 2013)
by fattire (twitter: @fat__tire)
tldr?​
Derp is a general-purpose, platform-independent installer, written in python with wxpython, that executes .derp XML-based scripts to walk the user step-by-step through a ROM installation (or do whatever you want.) The idea is to replace text-based walkthroughs, howtos, and installation instructions by requiring a user to do almost nothing but run a .derp script and sit back. Derp walks through a series of scripted steps (as in, say, a ROM installation) and automatically does all the file downloading/adb/fastboot stuff while the user waits and maybe reads what's happening (at the script author's discretion). Derp also pre-installs and keeps Google's Android SDK tools up to date and even gives adb & fastboot a simple UI. .derp scripts are human-readable XML. Embedding bash and python is also supported in Derp, as is restricting scripts or even script parts to certain platforms. Derp runs as root on the local computer (it's an installer after all), and is open source/GPLv3 licensed. It also comes with sample scripts and a built-in tutorial for creating your own.
Still tldr? It's a script-runner thing!
-----
LONGER DISCUSSION...​
WARNING: RIGHT NOW, DEVELOPER TYPES ONLY! This is not for end users...yet. Hopefully people will find bugs and help fix them before an end user uses this on a “live” computer with an actual device. Again, because this is a software installer, DERP AND ITS SCRIPTS RUNS AS ROOT. Never run random .derp or .xml scripts you find on the Internet. This could screw up your device AND your computer, so... treat it just like any other script you’d (not) run as root. Also, the discussion in this forum is how Derp is supposed to work, but of course, there may be (probably are?) bugs.
THE "PROBLEM" AS I SEE IT
Working on the CM wiki, I've grown to appreciate how varied firmware install methods can be. Some devices need rooting. Some need firmware downgrades. Sometimes you can use fastboot. Other times you can’t. Some systems need to unlock the bootloader, etc. etc.
Installing this stuff can be hard. Okay, maybe not for you, but how about your mom or dad? Could your grandparents buy a device today and put CM on it themselves? There's been some chatter on the interwebs about how to make rooting and replacing firmwares easier... some kind of graphical installer seems to be the answer. But there are a million devices out there...
So people have been using text-based HOWTOs, walkthroughs, step-by-step instructions, and/or shell scripts and batch-type files to do this. I thought maybe a generic, unified scripting method might work better that gives the users readable instructions but optionally automatically does technical steps for them.
Hoping to avoid creating yet-another-standard-way-to-do-something, back in February, I searched online for generic installation solutions. But they all seemed to be platform-dependent, or weren’t licensed for general use, or looked really ridiculously complicated....
So (and big caveat here-- I'm not a programmer!) I whipped up a proof-of-concept for developers to play with to start thinking about how to address the issue. It took me a few weeks to get going, but ended up sitting collecting dust for months as I worked on other things and occasionally bothered friends to test the latest version.
Derp is not necessarily intended as any kind of final solution per se-- it’s just for further discussion/testing. A totally legit question to be answered: is this in any way even a good idea?
Let's find out.
SO WHAT IS DERP?
It's a general-purpose installer, written in python with wxpython, that executes .derp XML-based scripts to walk the user step-by-step through a ROM installation, optionally doing all the "technical stuff" like downloading files and running commands in the background. Ideally, you wouldn't have to write a long tutorial for every platform on how to do stuff-- a .derp script could BE the walkthrough.
The first thing Derp does is install the latest adb and fastboot from Google. That looks like this:
(Mac version)
Next, when you run a .derp script, it can automatically download and verify ROM files like CyanogenMod or tools or whatever from the Internet, and then install them.
(Linux version)
(Mac version)
As it does all this, the script can provides information and/or feedback to the user via a UI that hopefully looks like a normal installer. What the user sees is written by the script author in simple HTML. As the .derp script runs, the user simply ftaps "Continue" to proceed through the scripted steps.
As mentioned, .derp scripts are written in XML, which is platform-generic and easy for a human to read. The .derp script syntax, explained below, is also very simple. The script author is also free to embed bash shell scripts or python (or both) if advanced stuff is needed.
Worth mentioning too-- sections, steps, text, actions, or entire scripts can be restricted by the type of computer its running on (ie, don't run certain python commands on Mac, but do run them in Linux, or whatever).
And finally-- while my initial thought was to use this for installations of ROMS like CyanogenMod to a device, I'd think Derp can be used for many kind of installations or scripted operations-- even to wrap a UI around a bash or python script to make it easier for users to run without having to open a Terminal and start typing. Derp scripts don't even have to have to be used for anything to do with mobile devices, though it does pre-set up the Google SDK tools for that purpose.
In fact, a Derp script can do NO actions-- simply serve as a click-through set of HTML-based instructional steps for a user to follow by hand. Conversely, it can say nothing to the user but "Stand by, doing everything." and that's it.
FEATURES:
Easy to install. Debian-based Linux just uses sudo dpkg -i derp_0.001-1_all.deb and it's ready to go. Mac users: it’s Derp.app. Done and done.
Derp is GPLv3-licensed and source code is available now. Read license for terms, conditions, and more disclaimers.
Automatically downloads/updates all SDK tools (primarily adb and fastboot) directly from Google at every launch. So the user is always up to date. (also requires users to agree to Google's T&C...)
Uses an XML-based, OS-neutral installation script format that is easy to write and understand. Just about anything you want the user to do-- restart in bootloader mode, unlock the device, etc-- the derp script should be able to do. Even run bash or python scripts from within the script.
XML Tags:
<derp> - the main tag for a derp script.
<section> - a major category for individual steps.
<step> - Put as many of these in a section as you want.
<info> - The stuff the user sees as the script runs. You can add HTML tags to make it look good.
<file> - tell derp a file’s URL, MD5/SHA hash, and local filename. Derp will grab it and verify it for you automatically. These files can be roms, scripts, recovery images, etc. whatever your script needs to do its job.
<action> - valid “action” types include “adb”, “fastboot”, “python”, and “bash”. Future versions of Derp can add more. <action> allows your script to do stuff. Never worry about whether the user installed and set up the latest versions of adb or fastboot properly. They should "just work".
Using the above tags, you can not only have your scripts automatically do full installations, rooting, bootloader unlocks, etc, but simultaneously tell the user what’s happening behind the scenes if you choose. The user feedback is written in standard HTML-formatted text. The user just hits “Continue” whenever you want to move from one step to the next.
Included are example scripts to install CyanogenMod 10.1.2 on stock Nexus 7, Nexus 4, Galaxy Nexus, and HTC One. The latter script, written by Cowmix, demonstrates how to embed python to interact with the user, and they all include bootloader unlocking.
The only things I can think of that can’t be done automatically are steps that requires hands-on (ie, holding down buttons during power-on) or where, say, debugging mode needs to be manually turned on, or the slider needs to be physically unlocked. In the few cases where user involvement can’t be avoided, the <info> tag can be used to walk them in “real time” through that step.
A built-in tutorial on how to write your own .derp scripts explain how the tags work. (The tutorial itself is a .derp script.)
A console window helps you see what derp is doing in real-time...
Also included: a quick-access adb and fastboot text-entry in the console. This lets you start up Derp and type quick adb or fastboot commands without needing a terminal (or to deal with PATH issues)
“Debug Mode” lets you go through the script without invoking the <action> tags. Makes writing scripts easy.
Derp should automatically detect when a device is connected via adb or fastboot and let you know.
You may filter any Derp tag (including <action> tags) by operating system. This means that using a single script, the user can see different text or the script may behave differently depending on the platform. In fact, you can restrict the entire script to a particular operating system(s).
The script doesn’t actually have to “do” anything. It can be used simply to create walkthroughs or tutorials in a much nicer format than a step-by-step text file. Just link to a .derp file and let it walk the user through whatever. Easy to convert a text walkthrough to an interactive click-through just by adding <section> and <step> tags.
WHY MUST DERP RUN AS ROOT?
Remember, Derp is an installer. It needs to do important stuff, and as such it runs as root. I had considered trying to sandbox the parts that "needed" root and only enable it there and ask for permission for a single operation via an "enter your password" type of dialog box. But because the .derp format is so flexible, there were a million potential places where a script author could do varying kinds of trickery-- by breaking out of Derp to execute python code, spoofing directory paths, abusing the embeddable bash scripts, etc. It just didn't seem to make sense to try to anticipate and counteract all that. Playing cat-and-mouse endlessly is pointless. Again, Derp is an installer. Installers get administration permissions. Just like any installation script you'd run with "sudo" would get. Just like the package installer on OS X. Also, it is much easier to run adb and fastboot with root permission-- you can easily kill all running versions of adb for example, and fastboot seems to prefer it. Plus, it avoids the need for playing with udev configuration stuff in Linux.
This means that, like pretty much every other type of installer, .derp scripts will have full access not only to your mobile device, but to the computer Derp is running on. This seems to make the most sense to me, but I invite others to chime in on improving the design if you disagree.
All caveats and considerations apply. Do not run untrusted scripts, and do not run Derp on a "sensitive" computer (however you wish to define that).
WHAT IS MEANT BY "CROSS-PLATFORM"? (IN OTHER WORDS, WHERE'S THE WINDOWS VERSION?!)
I don't have/use Windows. Right now, Mac & Linux builds are currently available. Derp still needs to be ported to Windows, but since it’s wxpython, and I tried to make as little dependent on the underlying operating system, 95% of the work is hopefully done. Anyone with Windows who’d like to help, let me know.
I think it should be some minor changes to the setup.py file and a few definitions. Also, not sure if Windows supports the “bash” shell...
ANYTHING ELSE?
Ummm... That’s it. Remember, this is a work in progress and a proof of concept... Again, I dunno if anyone will see the value here, and maybe it will need a complete rethink. There are likely to be bugs, maybe even really bad ones. But after a few months of playing around, I kinda feel it’s ready for other developers to at least see and even try in a secure environment (as suggested, maybe a VM or something).
SHOW ME THE CODE!
The code is on github-- please submit commits-- fixes, new features, whatever-- as well as bug reports there. And again, figure there will be tons of bugs to be squashed.
Enjoy.
fattire (@fat__tire)
THANKS TO...
Big thanks for helping me test w/different devices: cowmix, hashcode, kornyone, ciwrl, utkanos, verygreen, and jeagoss
DOWNLOADS:
Debian-based Linux (Debian, Ubuntu, Mint)
derp_0.001-1_all.deb
MD5: 6e8eabe94cdfdba649ea41198211bb64
SHA512: 307aed0ad79de17793bb445d2b588388bf66b42716de36a055227f555bfc12ab3e61d5f0e3de804eb4c0c560f140a6318ea6dd1608cc78ee84b50336895cdfc2
Mac OS X (Tested on: Snow Leopard, Lion, Mountain Lion)
Derp-v0.001-mac.zip
MD5: b738e0a270f53d274baec0ce121577fb
SHA512: 3cf7d438c4dfd0c5c5d7c2f29fe19a76dcbb728acfe73a24e28cdb3f21624510c94f1c4224ad31118851f17205e4d7152619c15281c98189cb33ccac82c1505a
Source code on GITHUB is here.
SAMPLE DERP SCRIPTS
Nexus 7 stock to CM 10.1.2 installer - included (written by me)
Nexus 4 stock to CM 10.1.2 installer - included (written by me)
HTC One stock to CM 10.1 nightly installer - included (written by cowmix)
Galaxy Nexus stock to CM 10.1.2 installer - included (written by cowmix)
EXTERNAL SCRIPTS BY OTHERS
None yet...?
DONATIONS?
Not to me, please. If you feel the need to give someone money, consider donating to the EFF or the Software Freedom Law Center. It's really a donation to your digital rights. (I'm not affiliated with them except as a huge fan and occasional donor.)
REMEMBER, DERP IS EXPERIMENTAL AND YOU RUN IT AT THE RISK OF YOUR COMPUTER, YOUR DEVICE, AND YOUR VERY EXISTENCE AS A HUMAN BEING. I TAKE NO RESPONSIBILITY FOR WHAT DOES OR DOESN'T HAPPEN. DON'T RUN DERP SCRIPTS YOU DON'T TRUST COMPLETELY. YOU ARE ADVISED, JUST IN CASE, TO ONLY RUN SCRIPTS IN A SANDBOXED VIRTUAL COMPUTER. And let me know what y'all think.
Script Syntax (Tutorial)
SCRIPT SYNTAX​
So you want to write a Derp installation script? It's easier than you might think. Derp isn't too complicated-- it doesn't have a lot of "logic". It just follows a script and does what you tell it.
To start a script file, just get out any text editor (or XML editor) and name it something with the .derp file extension, such as:
sample.derp
Once you write up a sample script, you can load the file with Derp to see if it works.
The <derp> tag
Every script starts with the <derp> tag and ends with the </derp> tag. Within the "<derp>" tag, at least for this pre-alpha version, you need to put at least one required attribute, app_version:
<derp app_version="0.001">
</derp>
This is to identify the version of Derp that your script is for. Future versions may not support your script. You can put other attributes that might be used in the future:
<derp device_codename="mako" os="Linux Darwin" title="CM10.1-M1 for Mako" device_name="Nexus 4" device_vendor="lge" app_version="0.001" script_version=".5" author = "fattire" author_email="[email protected]" author_twitter="@fat__tire" license="GPLv2">
These additional tags may be required in future versions of Derp, so if you are able to supply 'em, it's recommended. They'll simply be ignored if they're not needed.
The title="CM10.1-M1 for Mako" is a general title for the script. VERY briefly explain what it does. It's not required, but recommended.
The one other important attribute, os="Linux Darwin", will be explained later. For now, just know that it is optional, but you can use it to restrict the whole script to only run only in certain operating systems.
The <section> tag
Every set of instructions should be divided into logical sections, such as the ones on the left. The section has its own required attribute, the name:
<derp app_version="0.001" os="Linux Darwin" script_version=".5">
<section name="This is the first section"></section>
</derp>
Notice the name attribute is used with a section to identify what the section is for.
There's not much more to say about sections. It's easy. Let's move on.
The <step> tag
Each Section can be made of (at least one but) an unlimited number of individual steps. And the tag for that is called <step>. Here's how it's used:
<derp app_version="0.001" script_version=".5">
<section name="This is the first section">
<step name="This is step one"></step>
<step name="This is step two"></step>
</section>
<section name="This is the second section">
<step name="This is step three"></step>
<step name="This is step four"></step>
</section>
</derp>
Notice that steps, like sections, need to have a designated name attribute so that Derp knows what to display. The step name will appear to the user at the top on the right as the centered step heading.
The <info> tag
The stuff that appears in the main info area should be wrapped in info tags.
Example:
<derp app_version="0.001" script_version=".5">
<section name="This is the first section">
<step name="This is step one">
<info>This is the text you'll see! It explains what's going on to the user. <b>I'm bolding this part because it's really important for the user to see.</b></info>
</step>
</section>
</derp>
Note: The stuff that you put between the <info> and </info> tags is...HTML!
So you can format it however you want. You can even include images from the Internet.
Here is the list of HTML tags that are recognized:
A NAME=[string]
HREF=
TARGET=[target window spec]
ADDRES... can add os="Linux Darwin" to the <derp> tag.
RESERVED
RESERVED
Derp
Derp is a pretty slick interface for scripting not only device installation, but resources needed for modifications on Android devices (namely the Android SDK). A developer can create a custom script to automate the installation, decreasing one off bad installs, and ensuring the process is completed as intended.
People new to Android customization or developers could find this of use. I am excited to see where it goes.
kornyone said:
Derp is a pretty slick interface for scripting not only device installation, but resources needed for modifications on Android devices (namely the Android SDK). A developer can create a custom script to automate the installation, decreasing one off bad installs, and ensuring the process is completed as intended.
People new to Android customization or developers could find this of use. I am excited to see where it goes.
Click to expand...
Click to collapse
Thanks.. BTW for those asking about the Windows port (in IRC)...
I simply don't have windows, but it was written to be as platform generic as possible. Anyone with a tiny amount of programming skills (again, I have zero myself) should be able to add Windows compatibility pretty quickly... I think it's a matter of just fixing that setup.py file to work with py2exe. See here for more info.
fattire said:
Thanks.. BTW for those asking about the Windows port (in IRC)...
I simply don't have windows, but it was written to be as platform generic as possible. Anyone with a tiny amount of programming skills (again, I have zero myself) should be able to add Windows compatibility pretty quickly... I think it's a matter of just fixing that setup.py file to work with py2exe. See here for more info.
Click to expand...
Click to collapse
Windows dev here, I may be able to help. Also, any interest in a Mono version? Looking for an excuse...
fattire said:
Thanks.. BTW for those asking about the Windows port (in IRC)...
I simply don't have windows, but it was written to be as platform generic as possible. Anyone with a tiny amount of programming skills (again, I have zero myself) should be able to add Windows compatibility pretty quickly... I think it's a matter of just fixing that setup.py file to work with py2exe. See here for more info.
Click to expand...
Click to collapse
Grats BTW, great idea...
I've come across several usages of Linux only Python functions so far and I don't see drop-in alternatives for Windows, so I've just commented out that particular section (line 1183). I managed to get the tool download working. Suggestion, maybe sticking with MD5 hashes would be simpler as the script receives updates to match Android SDK download updates. I can understand why you would want to use SHA512, but google offers MD5 on the site next the downloads for simple copy/paste replacement. There's the potential for lots of hard-coded configuration and for those configurations to be platform specific, such as the download folders for tool updates. I'll see if I can finish up the first bit of win compat this afternoon, but my Android device is at work and is a Dell Streak at that, so my test options are a bit limited.
http://docs.python.org/2/library/platform.html
1183 - os.geteuid()
1196 - os.uname()
fork:
https://github.com/strvmarv/derp
screen:
Windows... already?!!
Holy crap! I don't think it's been 12 hours and there's an early windows port.. amazing job!
The unix-only stuff was from a last second addition I did when I realized that dero would try to run on ARM-based linux machines. The easy fix is to simply indent everything past:
if platform.system() == "Linux"
so that the if not os.geteuid() == 0: and testarch = os.uname() stuff is conditional on it running Linux. (Unless there's a windows ARM version, in which case it also won't work).
In both cases it would work except for the fact that Google doesn't provide libraries for ARM. Interestingly though, debian does. So if we REALLY wanted, we could just apt-get install the tools for ARM Linux users. But that would (1) require a debian-based version of Linux, and (2) we wouldn't know that adb/fastboot/etc are the very latest from Google. But it might be a good version .002 feature, with a preference to turn it on or something.
Again, amazing work. Keep it up!
strvmarv said:
http://docs.python.org/2/library/platform.html
1183 - os.geteuid()
1196 - os.uname()
Click to expand...
Click to collapse
fattire said:
Holy crap! I don't think it's been 12 hours and there's an early windows port.. amazing job!
The unix-only stuff was from a last second addition I did when I realized that dero would try to run on ARM-based linux machines. The easy fix is to simply indent everything past:
if platform.system() == "Linux"
so that the if not os.geteuid() == 0: and testarch = os.uname() stuff is conditional on it running Linux. (Unless there's a windows ARM version, in which case it also won't work).
In both cases it would work except for the fact that Google doesn't provide libraries for ARM. Interestingly though, debian does. So if we REALLY wanted, we could just apt-get install the tools for ARM Linux users. But that would (1) require a debian-based version of Linux, and (2) we wouldn't know that adb/fastboot/etc are the very latest from Google. But it might be a good version .002 feature, with a preference to turn it on or something.
Again, amazing work. Keep it up!
Click to expand...
Click to collapse
Good deal, glad I could help. If you ever want to give a Mono/GTK# port a try just give me a shout. I could do the majority of the leg work code in C# very quickly, lightweight app, which is excellent these days.
I just pushed up my initial changes for the setup.py. I haven't figured it out yet, there are some imports, specifically in derp.py line 23 (platform) that aren't getting consolidated into the build with py2exe. It's most definitely how I've setup the options in the setup.py, hopefully someone is more familiar with py2exe than I and can provide some insight.
strvmarv said:
Good deal, glad I could help. If you ever want to give a Mono/GTK# port a try just give me a shout. I could do the majority of the leg work code in C# very quickly, lightweight app, which is excellent these days.
I just pushed up my initial changes for the setup.py. I haven't figured it out yet, there are some imports, specifically in derp.py line 23 (platform) that aren't getting consolidated into the build with py2exe. It's most definitely how I've setup the options in the setup.py, hopefully someone is more familiar with py2exe than I and can provide some insight.
Click to expand...
Click to collapse
Okay, let me take a second and fix the bug I described above... then-- damn, I wish I could try the setup.py myself. So you're saying that the platform stuff doesn't get imported into the build for some reason?
Standby for the fix.. just gotta test it and stuff.
Update: Pushed. Also added /build, /dist, and one other mac build-related directory to .gitignore to make things a little easier to see...
strvmarv said:
I haven't figured it out yet, there are some imports, specifically in derp.py line 23 (platform) that aren't getting consolidated into the build with py2exe. It's most definitely how I've setup the options in the setup.py, hopefully someone is more familiar with py2exe than I and can provide some insight.
Click to expand...
Click to collapse
Question, would doing something like this on line 52 do anything:
options = {'py2exe': {'bundle_files': 1, 'optimize': 2, 'compressed': 1,}},
I think you can also do something like:
includeList=["a list", "of modules", "to include"]
first, and then replace the line above with something like...
options = {'py2exe': {'bundle_files': 1, 'compressed': 1, 'optimize': 2, 'includes': includeList}},
see more info here and let me know if the above gets those modules in there! I see some option called "unbuffered".. dunno if that needs to be set to true.
bundle_files to 1 means that it hopefully will end up being a self-contained .exe
Let me know! Thanks!
Suggestion, maybe sticking with MD5 hashes would be simpler as the script receives updates to match Android SDK download updates. I can understand why you would want to use SHA512, but google offers MD5 on the site next the downloads for simple copy/paste replacement.
Click to expand...
Click to collapse
Forgot to answer this. You're totally right that MD5 is the one Google provides, and at first I used MD5 for everything-- then sluo reprimanded me, told me how MD5 can't be taken seriously any more, that it's really really easy for anyone to create a MD5 spoofed file these days... So I figured, since this runs as root, it's better to be very extra super-cautious and make absolutely sure the right file is downloaded
Of course, in a user-provided script, you can use md5s or whatever the author wants, but for the Android tools themselves I figured it was better practice to use SHA512 to be more forward/future looking and make sluo (a *real* programmer) happy
More work done by hashcode on a windows port
Okay strvmarv and other windows folk--
Hashcode helped me out by testing on his machine that has Windows.. we did a little debugging, and the result are these two commits:
Pull Request #1
He was able to run derp successfully and do adb/fastboot commands from the Console interface.
But because he's using win64, he couldn't build (apparently only win32 supports building .exe files) all the way.
So, if you have a win32 system-- after applying these, does python setup.py py2exe build an .exe?
Questions:
* on win32 does it build into an .exe?
* If so, does the .exe run properly as the administrator-- right-click and select "Run as Administrator" I am told
* if so, does it install the android tools and ask you to agree to the License?
* if so, does it download/detect your devices?
* if so, can you run scripts (does it work?)
Note: You may also need to manually install Java, since the android sdk updater uses java.
I'm wondering too if the installer installs any drivers, and/or if any were needed.
Thanks!
fattire said:
Okay, let me take a second and fix the bug I described above... then-- damn, I wish I could try the setup.py myself. So you're saying that the platform stuff doesn't get imported into the build for some reason?
Standby for the fix.. just gotta test it and stuff.
Update: Pushed. Also added /build, /dist, and one other mac build-related directory to .gitignore to make things a little easier to see...
Click to expand...
Click to collapse
Awesome, will take a look tonight. It's very likely I'm just not setting the options in the setup.py correctly.
You're running snow leopard, correct? You could grab a copy of the Windows 8.1 Preview (free until Jan something I believe - http://preview.windows.com) and dual-boot, or even just run a VM...if you wanted. I had to install Python 2.7 x86, wxPython x86, python2exe x86, and then run derp.py from source directly (powershell or cmd) to get where I'm at now.
strvmarv said:
Awesome, will take a look tonight. It's very likely I'm just not setting the options in the setup.py correctly.
You're running snow leopard, correct? You could grab a copy of the Windows 8.1 Preview (free until Jan something I believe - http://preview.windows.com) and dual-boot, or even just run a VM...if you wanted. I had to install Python 2.7 x86, wxPython x86, python2exe x86, and then run derp.py from source directly (powershell or cmd) to get where I'm at now.
Click to expand...
Click to collapse
Ideally I'd like to test it on a win32 system because that's the one that py2exe will make a .exe for. But that said, hashcode has it running and adb installs and works and such. It's now a matter of getting it packaged up properly I think. If you can double-check that it works for you, that would be a good start. Then hopefully the .exe can be made. It should also check to make sure java is installed (which is needed by the Google updater) and if not, maybe help the user do it (or even do it for them)...
Also, his version of windows already had drivers on them, so we're not sure whether derp (well, the android tools installer from Google) will take care of that or not.
One last note-- you may have had problems with the looping downloads because the sha512sum seemed to have been off. I did my own sha and it was different.. The new one worked for hashcode.. it's in his commit linked above..
Thanks!
fattire said:
Okay strvmarv and other windows folk--
Hashcode helped me out by testing on his machine that has Windows.. we did a little debugging, and the result are these two commits:
Pull Request #1
He was able to run derp successfully and do adb/fastboot commands from the Console interface.
But because he's using win64, he couldn't build (apparently only win32 supports building .exe files) all the way.
So, if you have a win32 system-- after applying these, does python setup.py py2exe build an .exe?
Questions:
* on win32 does it build into an .exe?
* If so, does the .exe run properly as the administrator-- right-click and select "Run as Administrator" I am told
* if so, does it install the android tools and ask you to agree to the License?
* if so, does it download/detect your devices?
* if so, can you run scripts (does it work?)
Note: You may also need to manually install Java, since the android sdk updater uses java.
I'm wondering too if the installer installs any drivers, and/or if any were needed.
Thanks!
Click to expand...
Click to collapse
* on win32 does it build into an .exe?
- I'm not win32, I'm running 8.1 x64, but it builds/executes just fine if you're using the 32 bit versions of Python, wxPython, and py2exe due to WOW64, long story
- It does build into an exe, see screen
Output
View attachment output.txt
Screen of dist folder
* If so, does the .exe run properly as the administrator-- right-click and select "Run as Administrator" I am told
- I'm running it with Run as Administrator, no, it still seems to blow up and stop running when it get's to __init__, it appears it can't find it for some reason when built with py2exe, likely the need for inclusion, not exactly sure yet...hard to capture error since it flashes by very quickly and then the console closes
* if so, does it install the android tools and ask you to agree to the License?
- If I run derp.py directly in Python it works just fine, android tools, etc...I haven't tried a script yet
* if so, does it download/detect your devices?
- I haven't tried a script yet
* if so, can you run scripts (does it work?)
- Ditto
Note: You may also need to manually install Java, since the android sdk updater uses java.
- Java SDK already installed, I dabble in Android
These missing modules indicated in build output worry me, not certain how to install them...
The following modules appear to be missing
['Carbon', 'Carbon.Files', 'ElementC14N', '_scproxy', '_sysconfigdata', 'win32api', 'win32con', 'win32pipe']
I've pulled a fresh copy of your repo, added Hashcodes changes, and tweaked the setup.py according to what I've found so far. Still blowing up as indicated above, but still moving in the right direction. If you want to go ahead and merge Hashcode's pull and ignore mine I'll reapply my changes so things don't get weird.
Pull request 2: https://github.com/fat-tire/derp/pull/2
I'll look over py2exe documentation and see if I can figure out what we need to change.
Ah, now we're getting somewhere, I changed console=["src/derp.py"] to windows=["src/derp.py"] as indicated here http://www.py2exe.org/index.cgi/ListOfOptions , get an error on execute, which is dumped into a text file, and looks like this...
Traceback (most recent call last):
File "derp.py", line 48, in <module>
NameError: name '__file__' is not defined
Any ideas?
scriptFolder = os.path.join(os.path.dirname(os.path.realpath(__file__)), "..", "scripts/")
UPDATE:
This may help...
http://stackoverflow.com/questions/...e-path-of-the-current-executed-file-in-python
Nice.. thanks!
strvmarv said:
* on win32 does it build into an .exe?
- I'm not win32, I'm running 8.1 x64, but it builds/executes just fine if you're using the 32 bit versions of Python, wxPython, and py2exe due to WOW64, long story
Click to expand...
Click to collapse
Ah, cool.
- It does build into an exe, see screen
Output
View attachment 2167579
Screen of dist folder
View attachment 2167586
* If so, does the .exe run properly as the administrator-- right-click and select "Run as Administrator" I am told
- I'm running it with Run as Administrator, no, it still seems to blow up and stop running when it get's to __init__, it appears it can't find it for some reason when built with py2exe, likely the need for inclusion, not exactly sure yet...hard to capture error since it flashes by very quickly and then the console closes
Click to expand...
Click to collapse
The file size looks tiny... it looks like it doesn't build into it all the stuff it needs...
* if so, does it install the android tools and ask you to agree to the License?
- If I run derp.py directly in Python it works just fine, android tools, etc...I haven't tried a script yet
Click to expand...
Click to collapse
^ This is awesome and a good sign for this working once we get the build finished.
* if so, does it download/detect your devices?
- I haven't tried a script yet
* if so, can you run scripts (does it work?)
- Ditto
Click to expand...
Click to collapse
Now that I think about it-- the "welcome" stuff and auto-download of the tools are all a running .derp script (welcome.derp) so yes, you are running them
These missing modules indicated in build output worry me, not certain how to install them...
The following modules appear to be missing
['Carbon', 'Carbon.Files', 'ElementC14N', '_scproxy', '_sysconfigdata', 'win32api', 'win32con', 'win32pipe']
Click to expand...
Click to collapse
Hmm.. Did you try adding them explicitly in the optionList as I suggested above?
And another way to do it is to use the -p and -i paremeters when you do python setup.py py2exe
Also maybe try adding:
import win32com
after "import py2exe" in setup.py I saw some reference to that somewhere...
What else...
looks like elementc14n is something related to the elementree module of python... win32api is here I think... but I think it would be installed when you installed python to begin with.
I've pulled a fresh copy of your repo, added Hashcodes changes, and tweaked the setup.py according to what I've found so far. Still blowing up as indicated above, but still moving in the right direction. If you want to go ahead and merge Hashcode's pull and ignore mine I'll reapply my changes so things don't get weird.
Pull request 2: https://github.com/fat-tire/derp/pull/2
I'll look over py2exe documentation and see if I can figure out what we need to change.
Click to expand...
Click to collapse
I'm looking too... See this?
For py2exe to work with packages loaded during runtime, the main thing seems to be that u explicitly import the modules needed by your app somewhere in your app. And then give py2exe in setup.py with moudlefinder.AddPackagePath( , ) the hint, where to search for modules it couldn't find by std. introspection. in the app
I won't do a full-on pull to the repo until everything is working and tested against linux/mac just to make sure we're only fixing stuff and not breaking the other platforms in the process
strvmarv said:
Ah, now we're getting somewhere..
UPDATE:
This may help...
http://stackoverflow.com/questions/...e-path-of-the-current-executed-file-in-python
Click to expand...
Click to collapse
Ah yes-- does this help as recommended in the link above..?
http://www.py2exe.org/index.cgi/WhereAmI
fattire said:
Ah yes-- does this help as recommended in the link above..?
http://www.py2exe.org/index.cgi/WhereAmI
Click to expand...
Click to collapse
jpath wouldn't pull in for some reason, despite installing via pip and having an import, so I resorted to logic to assign "." as the path (very hacky)...
So, here it is...running from derp.exe compiled with py2exe...when I get a moment I'll put together a quick summary of how to get a local win environment going..
Here's another pull:
https://github.com/fat-tire/derp/pull/3
UPDATE:
Ack, storing sdk tools in Program Files\Common Files is great and everything, but it needs to be store in Program Files (x86)\Common Files since it's x86 compiled. Pretty sure things may go wrong at some point as it is...

[Q] Problem getting started on Android Studio

Hey guys,
I have been having trouble getting started developing applications for android. I know how to use Java, and frequently use the netbeans ide for my java homework ect. But I decided why not adventure out and build upon what I learned in school. Unfortunately I have ran into nothing but problems. The first problem is this:
"Gradle project sync failed. Basic functionality (e.g editing, debugging) will not work properly. "
In the messeages window it reads:
[file path to \app\build.gradle]
Failed to Find: com.android.support:appcompact-v7:21+
I have had trouble using grade in eclipse....well I only got eclipse to work once, when I first got my phone, and managed to make a small pop-up app for my self. I did not know any programming language at the time. I merely just copy and pasted most of the code.
and problem number two;
The generated code is riddled with errors?
I look through most of these errors and they state that certain things can be resovled. For example, cant resolve "support" <--- I think that by not having this imported correctly (I think this falls into the first problem) is causing the rest of the errors in my MainActivity file to go crazy.
Is their any way to post more information? Like a log file, maybe that might be of more help too. I just am unfamiliar with Android Studio, as of right now. Attached is a picture of the IDE when is spawns the error.
Thanks for the help in advance!
How to Fix said issue
KJ4CCH said:
Hey guys,
I have been having trouble getting started developing applications for android. I know how to use Java, and frequently use the netbeans ide for my java homework ect. But I decided why not adventure out and build upon what I learned in school. Unfortunately I have ran into nothing but problems. The first problem is this:
"Gradle project sync failed. Basic functionality (e.g editing, debugging) will not work properly. "
In the messeages window it reads:
[file path to \app\build.gradle]
Failed to Find: com.android.support:appcompact-v7:21+
I have had trouble using grade in eclipse....well I only got eclipse to work once, when I first got my phone, and managed to make a small pop-up app for my self. I did not know any programming language at the time. I merely just copy and pasted most of the code.
and problem number two;
The generated code is riddled with errors?
I look through most of these errors and they state that certain things can be resovled. For example, cant resolve "support" <--- I think that by not having this imported correctly (I think this falls into the first problem) is causing the rest of the errors in my MainActivity file to go crazy.
Is their any way to post more information? Like a log file, maybe that might be of more help too. I just am unfamiliar with Android Studio, as of right now. Attached is a picture of the IDE when is spawns the error.
Thanks for the help in advance!
Click to expand...
Click to collapse
Ok guys, I figured it out. We need to install a package from the sdk manager. The picture shows which one needs to be installed. The package is "Android Support Repository"
Seems you have already gotten the answer. But for this kind of questions, past the main line of the error log into Google is much faster than post a question, I think.

Categories

Resources