Android :: No Files Return From Apache Commons Net FTPClient
Dec 6, 2009
I am writing a ftp client on android sdk 1.5 with apache-commons-net- ftp-2.0. I can successfully connect to my testing ftp server but with I use listFiles() it return an empty FTPFile[].
I put the same code in a normal java program and it works fine. I don't know where is wrong. Any compatible problem when apache-commons- net-ftp-2.0 and android works together?
Here is my test code:
CODE:..................
It is actually 4 files and 1 directory in the ftp root!
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Sep 28, 2010
I'm trying to use the Amazon Web Services java sdk jar but it has references to org.apache.commons.httpclient. All I seem to have in my Android sdk is org.apache.commons.http.client, which is a different namespace and obviously causes the build to fail. I'm new to Java and Android dev... is there a way to "map" one to the other or create some sort of symbolic link? If not, does that mean I have to import a "standard" org.apache.commons library?
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May 14, 2010
In the spirit of using existing, tested and stable libraries of code, I started using the Apache-Commons-Math library and its BigFraction class to perform some rational calculations for an Android app I'm writing called RationalCalc.
It works great for every task that I have thrown at it, except for one nagging problem. When dividing certain BigFraction values, I am getting incorrect results.
If I create a BigFraction with the inverse of the divisor and multiply instead, I get the same incorrect answer but perhaps that is what the library is doing internally anyway.
Does anyone know what I am doing wrong?
The division works correctly with a BigFraction of 2.5 but not 2.51, 2.49, etc...
[UPDATE]
This was indeed a bug in the apache-commons-math 2.0 libraries. The bug is fixed in v.2.1.
It is now listed in the Fixed Issues section of the bug tracker:
When multiplying two BigFraction objects with numerators larger than will fit in an java-primitive int the result of BigFraction.ZERO is incorrectly returned..attempting to reproduce the issue and setting me on the right track.
CODE:.....................
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Jan 24, 2010
Where do I unzip commons-io-1.4-bin.zip so that the import statement can find org.apache.commons.io.FileUtils?
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Aug 19, 2009
How to use apache.commons in my android application.
I put the right import, but when I compile it I get the following error:
: package org.apache.commons.io does not exist import org.apache.commons.io.IOUtils;
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Sep 16, 2009
I am trying a simple send mail application using apache commons library.
Here is the code.
The email sending code is working fine in a standalone application.However when I try to run it as android application
It gave following error message. trouble processing "javax/naming/AuthenticationException.class": [2009-09-17 05:33:20 - Commons]
Attempt to include a core VM class in something other than a core library. It is likely that you have attempted to include the core library from a desktop virtual machine into an application, which will most assuredly not work. If you really intend to build a core library -- which is only appropriate as part of creating a full virtual machine binary, as opposed to compiling an application -- then use the "--core-library" option to suppress this error message. If you go ahead and use "--core-library" but are in fact building an application, then please be aware that your build will still fail at some point; you will simply be denied the pleasure of reading this helpful error message. [2009-09-17 05:33:20 - Commons] 1 error; aborting [2009-09-17 05:33:20 - Commons] Conversion to Dalvik format failed with error 1
I have added mail.jar,commons jars and jndi.jar to the references of eclipse If anybody know a resolution let me know.
CODE:....................
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Jan 27, 2010
I'm using org.apache.commons.net.nntp to connect to a nntp server, however running a simple nntp.connect(host, port) crashes the android.
Anyone got any ideas? Do java packages work with android straight out of the box? or do they need editing?
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Jul 14, 2010
To enable logging for apache commons HttpClient in normal Java application I used:
CODE:...................
But on android I don't see logs in LogCat.
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Sep 13, 2010
I've removed my convoluted and badly malformed question so that it doesn't detract from the very neat and correct answer beneath. Given the (surprising) difficulty of finding an on-line example for doing this incredibly common task, I hope Yoni gets a few more up-ticks for his response.
So the question...How do I use Apache.Commons to upload a file to some destination. I'm using it in Android and uploading to a PHP script, but obviously it can work from any Java program and to any HTTP based listener.
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Jan 12, 2010
Today I tried including the apache.commons.codec package in my Android application and couldn't get it running. Android could not find method ord.apache.commons.codec.binary.* and output the following errors in DDMS
CODE:...................
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Jan 27, 2010
How do i import org.apache.commons packages into android so i can use them in my applications?
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Jul 2, 2009
I got one blog which interacts with servlets... Link as follows
http://groups.google.com/group/android-developers/browse_thread/threa...
In that program 2 libraries were used..
1---> import org.apache.commons.httpclient.HttpClient; 2---> import org.apache.commons.httpclient.methods.GetMethod;
When i check these libraries in my program, its show error....how to resolve this error?
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Aug 29, 2010
I need my app to be able to go to a specified URL and access a file, then insert text at a specific line of said file. Is this at all possible?I
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Apr 8, 2009
Some audio files return 0 from MediaPlayer.getDuration(), even though they're perfectly valid files that play ok and that players on Windows can find the duration of. There seem to be two different cases here: certain file types such as .wma and .wav always return 0 duration, and others only do so sometimes. I haven't been able to find any pattern in the latter case, but it does seem consistent per file. The music player displays 0:00 duration for these, so it's not just my code.
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Jun 17, 2010
I have a pretty big library I developed specifically for use in my Android Application. However business logic itself has no dependency on Android. To preserve that, I used Commons Logging throughout this library and it's respective JUnit tests (which I run in Eclipse).
However now that I am starting to integrate it into an Activity which I launch on Android, I am unable to get my logging to work. In Eclipse/JUnit, I had simply pulled in log4j's jar file as well as a log4j.properties file. This doesn't seem to work when deploying to a device. After struggling with attempting to get that to work for several hours, I gave up and tried replacing all my commons logging stuff with android.util.Log. Now I can log on the device.. but all JUnit tests are broken. When any JUnit tries to log using android.util.Log, it throws a RuntimeException 'Stub!'.
I would prefer to revert to my commons logging approach.. if anyone can help with that.. otherwise.. what can I do to get my JUnit test cases running using 'android.util.Log'?
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Aug 4, 2009
I want to import the org.apache.commons.net.ftp.FTP, but there is no libs for it, so I download the commons-net-2.0 lib from apache website,
I try to push this lib into /system/framework/ but I can't because the directory is a read-only filesystem, and I try to chang mode for directory, but can't work! is other methods can use the lib?
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Jul 17, 2009
I am developping an API for my web application and get a problem when i try to run my android application.
Log file:
CODE:...........
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Mar 16, 2009
I'm trying to write a simple web service client app for Android, and I'd like to use commons-digester to convert the service's XML responses into objects I can work with. However, I'm getting a VerifyError as soon as I try to invoke any Digester method.
I've set up my dependencies (external jars) using Maven (the Masa Android plugin for Maven, and the Maven Plugin for Eclipse). The Masa plugin seems a little bit bleeding edge, so that may somehow be the source of the problem, but I can't be sure.
How can I debug this issue further, and what, if anything, can I do to resolve it? Is it not possible to use a library as simple as Digester on the Android platform?
Here is my complete error output:
CODE:..............
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Aug 22, 2009
jarkata commons lib is very useful for our everyday development.is there any porting to android?or is there a good way to porting the jarkart commons libs to the android environment?
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Jun 27, 2010
If I need to return my phone before the 30 days are up and they are out of stock, will they still honor the return policy and just call you when they have one available or will you have to stick with the phone that you have?
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Mar 8, 2010
At the moment I'm trying to build some integration tests for an android project. I would like to use the same apache http classes I use on the android. Which version is this and can I get a jar of that somewhere?
Trying to use the jar that comes with android only resolves in Exceptions... But most of the tests won't need running them in the emulator all the time just because I use some apache libraries or do they?
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Aug 26, 2010
Has anyone tried to use a newer version of Apache HttpClient on Android? There's an annoying bug in the HttpClient used by Android and I was wondering if I would run into problems trying to redistribute HttpClient 4.1 with my app.
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Apr 30, 2010
I was trying http-cleint tutorials from svn.apache.org. While running the application I am getting the following error in console.
CODE:............
I have added android.permission.INTERNET in AndroidManifest.xml.
CODE:...........
The java code in HalloAndroid.java is as follows
CODE:....................
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Jun 2, 2010
Basically what I need to do is to perform digest authentication. First thing I tried is the official example available here.
But when I try to execute it(with some small changes, Post instead of the the Get method) I get a
CODE:..................
When this failed I tried using:
CODE:.................
At first I have only overridden "realm" and "nonce" DigestScheme parameters. But it turned out that PHP script running on the server requires all other params, but no matter if I specify them or not DigestScheme doesn't generate them in the Authorization RequestPreperty when I call its authenticate() method. And PHP script returns HTTP response code 200 with a message that PHP script requires cnonce, nc and qop parameters.
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May 11, 2010
Why import org.apache.commons.lang.StringUtils cannot be imported in android by default.
Do i have to include an external library? Then where can i find that library on the web?
CODE:.....................
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Jun 29, 2010
I need to parse an UTF-8 encoded input stream, so I think the most appropriate method is to use
CODE:..............
For that I need to import org.apache.harmony.xml.ExpatReader but I cannot figure out how, I mean which Java package must I install from http://harmony.apache.org/download.cgi?
Or is there an alternative method to accomplish the same goal?
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May 21, 2010
Is it possible to install MySQL and Apache servers on an Android device?
One of the requirement was that the Android app has to communicate with a local server via Wifi (via browser for accessing PHP pages).
Instead of that, the whole server side (including MySQL, Apache), has to be transferred and hosted on the Android device, so that the device doesn't have to use the Wifi.
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Aug 25, 2010
I've exported an apk from eclipse. I am able to install it without any problem if I copy it to the phone's sd card.
When trying to download via phone's (Galaxy S) browser I get:
"Download unsuccessful".
I have set mime type application/vnd.android.package-archive in the mime.types, restarted apache, still same result.
Also tried code...
Still no luck.
I am able to download and install applications from android market. I suspect that apache is not sending the mime type but this is just a shot in the dark.
How can I fix the problem and be able to install APKs from my web server? (or at least to check if apache sends correct header with mime type)
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Aug 17, 2010
I have been working with dnsjava to do a lot of DNS lookups, using the Lookup class with its own resolver per lookup, and also with a single shared resolver. No matter how I invoke it, there are always collections of sockets left open at the end of the process, and eventually my process runs out of file descriptors and is killed.
Tracing the code, I found that creating a Selector object causes two additional sockets to be created, and these are the two that are never closed. The dnsjava code is calling the Selector's close() method (I have stepped over that and verified that the two sockets, sink and source, are left open after it).
Is there some way I can force those sockets to close? I don't see any public API to get the source and sink socket references from the Selector class, but perhaps I am missing something?
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Dec 4, 2009
How can I use org.apache.harmony.luni.platform.OSNewtorkSystem in Android SDK ?
I'm working with Android SDK 1.5. And I'm programming a application running on Android Emulator.
This application used a library for communication using TCP/IP.
In debug mode, when create a instance of org.apache.harmony.nio.internal.PipeImpl class a message that is "Permission denied (maybe missing INTERNET permission)" is thrown.
CODE:.........................
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