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?
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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.
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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?
View 2 Replies View RelatedI'm creating a new class, using eclipse "New Java Class" dialog box. I can write the superclass I want (I can't find using "browse" button), but I can't write or select an interface to implement. I click "add" but ther is nothing to select. What I'm doing wrong?
View 4 Replies View RelatedI'm just getting into Android development, and I have a question about communicating between a receiver class and an activity class. I'm very new to JAVA and Android so I hope I don't sound too stupid. I'm developing an application where I intercept an SMS message and then based on various elements of that SMS I might delete it once it's been saved to the inbox. I have a receiver class that intercepts the txt message, and I am also able to delete messages from my inbox with code in the activity class using a button at the moment. The problem I have is communicating between the receiver class and the activity class where the code to delete a message resides. I tried putting that code directly into the receiver class but as I'm sure most of you already know the BroadcastReceiver class doesn't seem to support what I need to delete messages. I've been searching for an answer to this for a while, but haven't been able to find anything. Honestly I'm not sure I know enough about JAVA and Android to even recognize a solution if I saw it.
View 2 Replies View RelatedWhat I want to do, is be able to access the object neoApi inside the Neoseeker class, from its inner class RunningTimer. Now, in my code, you can see what I would think to work, but when I run my application, nothing pops up. Nothing inside my TextView, no Toast, nothing at all. How can I remedy this?
package com.neoseeker.android.app;
import java.util.Timer;
import java.util.TimerTask;
import org.json.JSONObject;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;.......................
I'm new to Java and android development. In my application I need data which is accessible for a few activities. I've read that a good solution is to use Application class for this. So I use it like this:
public class MyApplication extends Application {
private String str;
public String getStr(){
return str;
}
public void setStr(String s){
str = s;
}
}
and I can access this variable from activity like this:........................................
I have just started android. I just want to know that how can i call activity class from other java class. i just want to pass class object to activity class.
public class GsonParser extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MagazineThread thread=new MagazineThread();
thread.start();
}
public GsonParser(JsonMagazineParser Obj)
{
}
}
and i am just doing like from other class. GsonParser obj=new GsonParser(this);passing obj to activity class.how can i achieve that.
In my app in one package there are some classes. from those classes i want to run one class that is the Gps functionality class. i want to run that class in background. how i do it, i don't know. i am not able to make it solve from any document. if anybody knows the way to solve it please me by run a "hello world" app in the background. i am not able to solve this problem by going through document.
View 2 Replies View RelatedI'm building a small Android application, but this is more of a Java question than an android question. Looking through the tutorials there are lines that look like: startService(new Intent(this, MyService.class));
What exactly does the "MyService.class" field represent? Is that just a reference to the class for a template?
I made a Dialog Class with it's view classI want to pop up the dialog when I got some packets from network. so I made a Thread which parses packets and then I made if clause in Run() method There is no problem with parsing packet but when I enter "if clause" and call showDialog() I got Error message
Is there anyone who knows how to pop up a dialog from different thread?
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?
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.
View 2 Replies View RelatedHow 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;
I was trying http-cleint tutorials from svn.apache.org. While running the application I am getting the following error in console.
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I have added android.permission.INTERNET in AndroidManifest.xml.
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The java code in HalloAndroid.java is as follows
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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
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When this failed I tried using:
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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.
I need to parse an UTF-8 encoded input stream, so I think the most appropriate method is to use
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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?
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.
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.
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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?
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)
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?
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.
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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:
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It is actually 4 files and 1 directory in the ftp root!
To enable logging for apache commons HttpClient in normal Java application I used:
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But on android I don't see logs in LogCat.
I'm new in Java.
I'm trying to do code...
but said
The type Header is not generic; it cannot be parameterized with arguments <NameValuePair>
how I can do it?
Is possible to upload a file on apache server using commons-fileuploader jar file in android.
View 1 Replies View RelatedI 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
View 1 Replies View RelatedI am trying to import the code from this tutorial http://www.anddev.org/bbc_download.php?p=777&item=7
Into my eclipse,the tutorial is oldand I have trouble importing the packages that it referes.
Are those packages deprecated? or I have to manually download and install them into my projects classhpath? if so can someone give me a link on where to find them?
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.