Android :: Building Your Own UI Library
Nov 5, 2009
I was just wondering where there is any information on creating custom user interface libraries for Android. I would like to create a library and include it in an application by specifying something like <uses- library android:name="com.foo.bar" /> in the manifest (just like maps) and have an Activity that can be inherited from like the MapActivity. How can one create and build a library like this?
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Jul 29, 2010
I'm updating my application to take advantage of Android library projects. While I can get everything to build fine within Eclipse, I'm stuck trying to update my build.sh script to support library projects. At the moment, I can't figure out what options to pass to appt to tell it to look at my library projects when building my main project. Checking aapt--help has not been illuminating so far. Any suggestions?
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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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Nov 4, 2009
i need my app to support 1.5 and above. i noticed that if I create my build.xml file using --
c: oolsandroid2.0r3 oolsandroid update project --name MyProject -- path C:MyProject --target 2
it complains about my resource directory names "res/drawable-hdpi, res/ drawable-ldpi, etc... res/layout-large, etc..." saying "invalid resource directory name".
If I use 1.6r1 tool set c: oolsandroid1.6r1 oolsandroid update project --name MyProject -- path C:MyProject --target 2
Everything works fine.
If I use target 3 (1.6 and above) c: oolsandroid2.0r3 oolsandroid update project --name MyProject -- path C:MyProject --target 3
Everything works fine. So, do I basically *have* to use 1.6r1 to build for 1.5? And does that mean that those special directory names will only work on 1.6 and above?
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Dec 1, 2009
I've G1 dev phone. Earlier I upgraded it to 1.5 using HTC website. Now I want to customize (make some changes to ) source code and keep the changes running on G1 phone. I wanna go with cupcake release. Could any body please give me some pointers. If I download cupcake source code from android website and do 'make' for which target it will generate the images ?[Emulator or G1 phone etc.,]
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May 19, 2010
So, I'm new to developing apps (altogether) and I thought that it would be fun to start out on the Android. I did the test with "HelloAndroid" app, but I have no clue on how to run the app on my phone via Eclipse. I remember reading about it a long time ago (sometime in February) but I have no idea where to find it.
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Jun 1, 2010
I want to use DTLS (on OpenSSL) using JNI on Android 2.1/2.2. Can someone help me get started (tutorials, howto, pointers etc) with building OpenSSL for Android (2.1/2.2) using the Android NDK?
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Aug 31, 2009
When I download the source and build it according to http://source.android.com/download, then try to build the eclipse dev evironment as described on http://source.android.com/using-eclipse, I get 100s of Java Errors when trying to build the project.
Linux is 2.6.28-15-generic #49-Ubuntu Eclipse is eclipse-java-galileo-linux-gtk.tar.gz
18# java -version java version "1.5.0_18" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_18-b02) Java HotSpot(TM) Client VM (build 1.5.0_18-b02, mixed mode, sharing) 19#
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Sep 16, 2010
I am trying to build android example app by using phonegap. Here are the the system details.
Operating System : Windows XP
Android Sdk : 1.5 ( Previously i had 2.2 but deleted suspecting problem was with that)
Ruby : 1.9.1-p430
Ant: 1.8.1
Java JDK 5
PhoneGap 0.9.1
System Enviroment Variables
ANDROID_HOME : D:workandroid-sdk_r3-windowsandroid-sdk-windows
ANT_HOME : D:workANTapache-ant-1.8.1
JAVA_HOME : C:SunSDKjdk
CLASSPATH : C:SunSDKjdklib
Path : D:workandroid-sdk_r3-windowsandroid-sdk-windows;C:Ruby191in;D:workANTapache-ant-1.8.1in;D:workandroid-sdk_r3-windowsandroid-sdk-windows ools;
I ran ruby script and get output as below
$ ruby ./droidgap "D:/work/android-sdk_r3-windows/android-sdk-windows" pgtest c
om.example.android.pgtest example/ "D:/work/droid_apps/output1"
Building the JAR...
BUILD FAILED
D:workandroid-sdk_r3-windowsandroid-sdk-windows oolsantant_rules_r3.xml:28
3: null returned: 1
Total time: 1 second
Creating Android project for target level 1
Adding www folder to project...
Generating manifest...
Copying over libraries and assets and creating phonegap.js...
c:/Ruby191/lib/ruby/1.9.1/fileutils.rb:1265:in initialize': No such file or dir
ectory - D:/work/phonegap/phonegap-android/framework/phonegap.jar (Errno::ENOENT)
CODE:......
I even changed ant to ant.bat at one place, android to android.bat at two places in ruby script. I also set target_id = 1 which is for 1.5 sdk.
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Apr 23, 2010
When using an Android-generated ant build file, the file references your SDK installation via an sdk.dir property inside the local.properties files which is generated by "android update project -p .".
The comments in build.xml suggest that local.properties should NOT be checked into version control.
BUT, when you run your build from Hudson, it does a fresh checkout of your code from version control, hence local.properties does not exist and subsequently the build fails without sdk.dir being set. So its kind of chicken and egg problem. As a workaround I have checked local.properties into version control for now (nobody else will use it) but I was curious as to how other developers had tackled this problem ?
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Feb 4, 2009
Solved this by following the instructions at http://www.mail-archive.com/android-porting@googlegroups.com/msg01340... Also realised - that looks like a more appropriate mailinglist too :)
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Oct 17, 2010
I'm tinkering around with trying to build a speedometer using only the accelerometer for use when I go snowboarding. I can read values from the accelerometer but I'm not sure how I would derive the velocity. I was thinking of taking the square root of (X^2 + Y^2 + Z^2) where X, Y, and Z are the values reported by the accelerometer in each axis but that only would only give me the amplitude of acceleration at any given instant. I could multiple that by the sampling frequency to get my instantaneous velocity but this approach fails when I'm moving at a constant speed.
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Feb 26, 2010
I want to know if we can create builds using ant's build.xml and when i'm trying to do this an error is displayed SDK location not mentioned and besides that I'm unable to find local.properties file to mention the SDK Location. My aim is that I want to use my exiting code and make a build for new Android SDK's with changes in the resources and and some constant values is this task Possible with making a build using Ant and if by some other way. I have no idea about Ant and its functioning so it would very appreciable if minute details are also provided.
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Apr 21, 2010
I just installed NetBeans and the Android SDK following the instructions here. I am running Ubuntu 9.10 (Karmic). NetBeans is 6.7.1. The Android SDK is version 7.W.When I go into that directory, I see that the file does exist and it has proper permissions to be executable by anyone, yet even bash can't find it!
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Jul 1, 2010
Suggestions for building a treeview control in Android
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Aug 6, 2010
I want to start making cellphone apps with Android as first choice but not the only one. I have 10 years of experience with Java, C#, C++ in commercial applications and I know that many things and practices for this applications are not valid for cellphones. Where do I start reading? How do I adapt my way of thinking to this new environment as quickly as posible? I plan to make some money with it sometime in the future as an extra income or a career change maybe, who know.
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Jul 15, 2010
I want to build Alarm Clock application on android .Is there any tutorial available on net??
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Sep 10, 2010
I seek instructions for buiulding Android on the HTC Nexus. I have tried looking atthe OpenMoko ones, but could not find any useful guides. I have the Android SDK and Java JDK and this is it. All the guides on the Android site refer to installing Eclipse, which is for build Java apps so not a lot of use. Has anyone got some links? Please note that this is a question about building the kernel and the distribution around it. It is not about building applications for Android).
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Mar 5, 2010
I want to modify the Skia graphics library in Android slightly.
Is it possible to only rebuild the modified library without downloading and building the whole platform? The platform is massive and this is too much a bother..
Downloading and building the small number of projects Skia depends on seems ok to me, but the build script requires everything!
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May 15, 2010
I'm trying to build dschaefer android-box2d, and did follow the recipe.
I do get this error when trying to build the TestBox2d with eclipse:
Make all
CODE:........................
The only thing I did change was in the TestBox2dMakefile where i did change the path to the NDK.
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Dec 23, 2009
I'm going to start building some apps for android in the new year and i was wondering if people would like to suggest any apps they would like to see developed for their HEROS.Any suggestions welcome - the more unique the better.
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Mar 16, 2010
With my current code base I'd like to build two or more different versions of my Android app (free, premium,). For the iPhone (XCode) I can definte different targets. Is there something similar implemented in Eclipse?
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Feb 23, 2013
I am trying to make an app base on HTML and java actually I have this mobile site and contents are mostly text and 2 java picture galleries, and I need to run it as a native app. Is it possible to make mobnile website in other tools and somehow import them manually to Eclipse to get the app built? Because when I use new-->android application, the projects have only XML files and I am not familiar with xml.
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Nov 1, 2011
I am doing a project where we have to use the Android Terminal Emulator. I downloaded the the Jackpal Android Terminal Emulator from github and using the instructions in the document to build the terminal emulator.
[code].....
I am having trouble installing the package in the first step itself, i.e. building the ndk shared libraries.
According to the instructions provided:
Build the shared library:
cd <the-android-terminal-emulator-directory>
<path-to-the-android-ndk>/ndk-build
Accordingly, I typed the following in my cmd
C:>cd androidterm
C:androidterm>android-ndk-r6b/ndk-build
I got the following error message:
'android-ndk-r6b' is not recognized as an internal or external command, operable program or batch file.
I am still learning Android and have never worked with the command line before. Is it a problem with the way I have typed the command?
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Sep 23, 2010
When i try to clean and rebuild a project, eclipse hangs on the "building workspace" progress bar. the last thing i did was paste an image into a drawable folder - that caused a lockup and i forced eclipse close. now it's not rebuilding the project.
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Oct 23, 2009
I created a sample project using the below command:
android create project --target 1 --name HelloAndroid --path ./ HelloAndroid --activity HelloAndroid --package com.helloandroid
Then attempted to build it using ANT. It gives the below error while creating the .dex file.
CODE:............
BUILD FAILED C:android-sdk-windows-1.6_r1platformsandroid-1.1 emplates android_rules.xml: 129: apply returned: 2
Total time: 5 seconds
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