Android :: How To Create Own Library For Android Development?
Nov 3, 2010
I am a Delphi programmer and have written, over the years, hundreds of classes and routines which I can use in every Delphi program I write. This library is called d lib and can be *used in every Delphi program by putting this folder in my library path and using one of the units in the uses section of a Delphi unit. Being completely new to Java and Android development, I am wondering how to do this in s similar way. So my question, how can I write own classes, put them in some global folder, and use these classes and routines in every Android program I write ? I know this is a basic question, which I can probably find out by searching Google and trying it out in Eclipse, but if someone can put me on the right track, I know I will save much time.
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Mar 21, 2010
I'm a bit hesitant to present this here already but today i put out the first architecturally frozen release of my game development library called libgdx. I go ahead and post the content of the description page of libgdx here so you get an idea what it is all about. A series of articles is currently in preparation at my blog at. I will continue extending the library in the near future and hope that some of consider joining the effort. Without further ado, here's a simple FAQ for libgdx. === What is libgdx? === Libgdx is my attempt at a cross-platform game development library written in Java with some JNI code for performance hungry code. It abstracts away the differences between writting an OpenGL application for the desktop via Jogl and doing the same for the Android platform.
This allows you to prototype and develop your application entirely on the desktop and only needing 6 lines of code to execute it on Android. Neat, so what does it offer? Libgdx offers modules for graphics via OpenGL ES, audio, input and file i/o. All modules abstract away system specifics so you can execute the same code on the desktop and Android. The graphics module offers full bindings to OpenGL ES 1.0, 1.1 and 2.0. On the desktop almost all of the OpenGL ES functionality is emulated.
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Jun 9, 2010
Specifically some that may cater to an experienced developer (C#) but not necessarily familiar with Java/Eclipse?I have seen a couple vids on YouTube but they are either short (not much you can learn in 3mins or patronizing)
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Jun 30, 2010
I need to write a dynamic link library in C++ that is used by Java on Android. As I get, it should be .so library, but I don't know how to do that. I tried Cygwin, but it crashes: Code...
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Aug 12, 2009
I'm trying to create an app for Android that simply sends a command to an SSH server. No response needed, I just need to be able to send a command. I was wondering if there's any java library out there that I could use? No advanced stuff needed, just a pure connection to send the command.
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Jul 17, 2010
I'm new to JNI, i'm developing a native library for an Android project. I read some papers about JNI programming but i didn't understand if it is possible to create a library that can be loaded in different project classes with different packages. I read that to declare a new JNI method the syntax is:
the prefix "Java_"
an encoded fully qualified class name
an underscore ("_") separator
an encoded method name
Based on this definition it shouldn't be possible...
Suppose i had defined a class A in the package pkg1 with the native method foo contained in libfoo, and then i defined a class B in the package pkg2. Can i use libfoo and the foo method in B? How should i define the native method to achieve the result?
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Jan 4, 2010
Is it possible create android applications using PHP? can we port php code in to the android applications?
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Jul 30, 2009
I have several apps (each in its own apk, process etc) running at the same time on user's device.
these apps are all linked to a single common jar file (internally devloped) which contains a large portion of their overall code size.
is there a way for me to force Android to make this common jar load only once (e.g. into shared memory)?
the reason we want to do it this way, btw, are to reduction of each of the single apps memory intake, on disk footprint and possibly of their startup time.
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Dec 1, 2009
Is it possible to create a custom library in android (having its own layout resources) for use across several android applications?
I created a regular *.jar file but when I tried to create/style my views dynamically most of the properties do not work. Even referencing simple styles from the android.jar file such as android.attr.listSeparatorTextViewStyle did not work.
I created an android project without any Activity, having its own resource files and then referenced this project from another Android project to use in its build path. Everything seems to work fine but the emulator keeps crashing (with no meaningful error message in the LogCat) when I try to run the project.
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Jul 19, 2010
I need to provide some SDK as third party library for other applications. We don't want to open our source code. How could make a jar file?
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Nov 4, 2010
I am developing droid apps with eclipse (new to both) and have a basic Layout question. When using the layout tab (rather than the coding tab) in my main.xml, I am trying to create a home screen for when my app opens.
There is going to be the logo at the top center, then 3 simple buttons below, all centered. How do I go about formatting the Logo so it maintains a size relative to the person's screen size, and stays in the center?
I don't want to write sloppy code to where my program looks fine (UI wise) on my screen and is poorly formatted on other's screens. Also, is there good documentation explaining all of the Property values in the layout view?
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Oct 23, 2010
I'm having a problem while accessing a web service through ksoap2 library, is there any other way to access the web service. I can't use ksoap2 library for my project. Should I create a soap library or any other way.
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Feb 4, 2010
I have a static library: libhello.a and I want to create a executable file that link with this static library:Code...
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Feb 19, 2010
I ask something about static library..
" how to create executable static library in android?"
and
"How to connect static library in eclipse?"
Static library is a binary file, How to understand static library in jni?
I wondering static library operation method in android.. (such as static library in vc++).
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Jan 21, 2009
I am trying to create object of FileTransferManager manager = new FileTransferManager(this.connection);
it is giving error, the same error gives for , OutgoingFileTransfer otransfer = manager.createOutgoingFileTransfer("nimit@pc3/Smack");
I am testing demo app for android, smack library and openfire server (FileTransfer settings are enabled in open fire).
What is solution for this.
But when I put
try{
FileTransferManager manager = new FileTransferManager (this.connection);
}catch(Exception e){}
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Aug 12, 2009
How i can create android project's library that can be used in any different project. I create a jar file that contains all activities and add this jar file into my eclipse project build path. But if i need to use any activity then i must need to register this jar activity into my project AndroidManifest.xml. This looks very odd. I need a solution in which i have a jar or any other deployable file that contains multiple activities and any user can use them in his project without registering these jar activities into NEW android application AndroidManifest.xml file.
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Sep 17, 2012
I am a student searching for a master who can teach me how to create or make a libs for audio. I wanna make a difference between the people to creating mods of audio.
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Jan 27, 2010
I can build a daemon with my algorithm code and main function.I put all files in one folder under /development and make This executable file works successfully
Now I want to separate my algorithm code and main function code. I hope to build a binary library with my algorithm code and main function will link this binary library to use.
Where to put my algorithm code to create binary library and how to link this binary library in main function code?
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Mar 11, 2010
I have an app, say My App Free. I want to create My App Pro which I can charge for that has some additional functionality. The obvious way is to have a library that contains almost all my app code, then two Android app projects for the Free and Pro versions which reference that library.
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Nov 11, 2010
I have an Android library project that makes calls to PreferencesManager.getDefaultSharedPreferences.
I have 2 version of my app, paid/free, and they are not able to access the preferences stored by the library code.
Can someone tell me the right way to store values in SharedPreferences in library code and have the values available to projects that include the library?
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Aug 17, 2010
According to this SDK guide, unit-testing a Library project can be achieved by creating a standard application project, reference the Library project and then instrument the application for unit testing. However, when I do this and launch the test application I get the message.No tests found with test runner 'JUnit 3".I'm using Eclipse and the Android ADT plugin, all latest versions.the projects compile just fine. The test project also installs fine to the emulator. But in the console I can see that it looks for <library>.apk, which of course doesn't exist since I'm compiling this as a library into the test project.
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Aug 26, 2009
I created a jni library which depends the third shared library, I must copy the third shared library to /system/lib, otherwise, Java application can't load jni library. But you know, on G1 with official OS image, /system/lib is readonly. I tried to call System.setProperty to set java.library.path to the location stored the thired shared library before load jni library, but the issue still exists.
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Jul 15, 2010
As I understand, the three ways of distributing my application are via Jar, Android Library and Android Library Project.Jar - cannot contain resources or XML layouts (so this is out for me)Android Library - I don't really know how this works but the Google API uses it..Android Library Project - includes resources but allows the client free rein on the code as it is distributed as source.If I am to create a closed source application that requires drawables and XML files that I want to distribute to other Android programmers, what should I use? And can someone direct me to a tutorial on creating an Android Library?
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Apr 26, 2010
Android AMF client library Aftek has extensive experience in developing enterprise Flex applications. We have used BlazeDS extensively and we believe that it would nice to provide all the benefits provided by AMF for Android applications as well. We have developed an Android AMF client library which would enable Android application developers use the same extensively. The Android AMF client library supports remoting and secured remoting. This will allow all android applications to use the existing backend like .NET, Java, or PHP. The implementation is asynchronous in nature providing success and failure callbacks. This allows application to perform other tasks without blocking the application. We are currently performing some performance benchmarking and plan to release our library very soon. We would also be incorporating the messaging feature as well.
Android RTMP client library:Aftek has extensive experience in developing voip and audio/video and media applications. Media applications has a huge market and there would be quite a few people eager to develop the medial applications on Android. We believe that it would nice to provide all the benefits provided by RTMP for Android applications as well. We are developing an Android RTMP client library which would enable Android application developers use the same extensively. Our Android RTMP client library would support some add-ons that would help developers to deliver robust media solutions.
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Jul 17, 2009
How to create an HTTP request object of POST type in android? Which class need to be extend or what method need to implement? How to establish connection to a server? Actually i want to connect to a microsoft exchange server, and then i have to send a request to it using HTTP.
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Nov 15, 2010
I've studied several Android books in 2009 and have fiddled with SDK 1.0 with a couple of test projects; then I moved to another side project with different technologies and I have not followed the updates of the SDK in term of cool new features. Do you mind to give a brief recap of what I've missed since SDK 1.0?
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Jun 25, 2010
1- I am an iphone application developer, all iphones have very similar Operating systems, and the size and everything is the same, so I don't need to create applications specific for each iphone.
But with android there are different phones, different sizes, So How can i possibly know that my app works, and looks fine on all these devices
2- I don't already own an android but i completed my first application using the simulator. Which android phone do u suggest for testing? I am an AT&T user and i use an iphone. Can i simply insert my sim-card in the new android to be able to test my app on the device?
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Nov 24, 2010
With the latest SDK release, and the ability to download separate platforms releases into the SDK, the hardware resources required to develop for Android have increased significantly. Assuming that the developer targets all currently available seven platforms - that could take your dev machine to its knees. Taken alone the 'Android SDK Content Loader' takes nearly two minutes on a dual-core machine with 2GB memory.
As the title suggest the reason for creating this wiki is for everyone to list their development hardware configurations, and thus determine what is a well-suited machine for Android development.
The secondary reason for the wiki is that I'm trying to get my employer to provide me with a decent machine for development as I'm currently forced to work on a nearly 4 year old randomly-built machine, and expected to deliver great results. However, the reality is that my system keeps running out of memory, and I can hardly get a chance to write a few lines of code in between the numerous crashes.
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Apr 29, 2009
Is Ubunto 9.04 compatible with development in Android? Before i ugrade, deploy on device was normal. Now, using 9.04, doesn't recognize it using "adb devices". This below is already set on my ubuntu: 1. Login as root and create this file: /etc/udev/rules.d/50- android. rules.
For Gusty/Hardy, edit the file to read: SUBSYSTEM=="usb", SYSFS{idVendor}=="0bb4", MODE="0666"
For Dapper, edit the file to read: SUBSYSTEM=="usb_device", SYSFS{idVendor}=="0bb4", MODE="0666" 2. Now execute: chmod a+rx /etc/udev/rules.d/50-android.rules
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Sep 13, 2010
I'm trying to develop on android's platform. I'm working with netbeans and using this tutorial: Introducing Android Development with NetBeans. I seem to have everything installed properly, and have no trouble creating android projects,Does anyone know what might be causing this or how I could fix it?
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