Android :: Droid-ndk : Difference Between Static And Shared Library?
Jul 9, 2010
I'm new to Android ndk and i didn't understand yet which are the differences between static and shared library. Could you explain me what these differences are? When developing a library how could i choose one of them?
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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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Apr 2, 2009
How to compile android app with static library?could somebody give me a example?
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Apr 1, 2010
In my application, I want to use chm library.
Can anyone tell me How to build shared library (.so file) for chm reader in Android?
And which toolchain is used. what is the steps for building it?
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Jul 16, 2010
I have a cross-platform C library that I need to compile for Android as a *.so file. The library consist of many .c and .h files, and it use autotools as it's buid system. (./configure && make dep && make). Afaik, the library does not depend on other libraries, other than libc and OpenSSL (which should be present on Andriod).
I'm trying to find the simplest (read fastest in terms or not needing to read hundreds of pages of manuals and then apply try && fail brute-force approaches to complete the task) way of getting the library off my machine in source code form, and into the Android phones as a .so. The library will eventually be accessed from Java's native library interface. For development, I have both Windows and Debian machines on my desk.
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Apr 27, 2010
I have an existing C++ library that I want to compile into a static library, and call commands from it with Java on the Android platform. I am brand new to Android development, and just need to figure out how to set the Java interface up so my C++ lib works on the Android. Where do I start?
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May 31, 2010
I'm trying to compile a static library to use on Android but I can't figure out how to compile it. The library uses standard libraries (stdio.h etc...) and libxml2.
I am trying to compile using arm-eabi-gcc but I get the following error:
/cygdrive/c/android-ndk-r4/build/platforms/android-8/arch-x86/usr/include/asm/posix_types.h:15:28: error: posix_types_64.h: No such file or directory
How do I get this to work?
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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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Mar 7, 2010
I am successfully linking some of my code stored in a .jar-based library to my Android app. The .jar code references Android library content just fine.
The problem is I need to include 'res' resources in the library but can't work out how to do this. Any suggestions?
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Mar 22, 2010
After installing the smokedglass v6 rom, it deleted some apps, when i try to reinstall the apps that got deleted, i got an error that says "Installation error, Missing shared library." i went into manage apps to make sure they aren't there, and i used root explorer to delete any trace of the apps, yet i still get this error.
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Sep 27, 2010
I have some information stored as SharedPreferences. I need to access that information from outsite an Activity (in from a domain model class). So I created a static method in an Activity which I only use to get the shared preferences. This is giving me some problems, since apparently it is not possible to call the method "getSharedPreferences" from a static method. Here's the message eclipse is giving me:
Cannot make a static reference to the non-static method
getSharedPreferences(String, int) from the type ContextWrapper
I tried to work around this by using an Activity instance, like this:
public static SharedPreferences getSharedPreferences () {
Activity act = new Activity();
return act.getSharedPreferences("FILE", 0);
}
This code gives a null point exception. Is there a work-around? Am I going into an android-code-smell by trying to do this?
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Oct 19, 2010
In my Android application, I have to call the getSharedPreferences in non-activity classes. In order to avoid passing a Context object to each constructor of these classes (and because many of them are classes with only static methods which don't have a constructor), I have implemented these steps : The main activity of my application (which is launched at startup) is called Dispatcher. In the onCreate method of this class, I keep a reference to the created Dispatcher object in a static public variable of the Dispatcher class which can be accessed from any class in the project.
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Apr 22, 2010
I am developing a library for Android applications which does not use native code (JNI). I have tried suppling the library as an external jar in my Android projects but this method does not include the library contents in the apk and thus throws class not found errors when run in the emulator or device. I have also tried creating the library as an Android project in itself and this does work, but only for public static properties (not methods). With the library and application both being in separate apk's I can see that the VM notices references to the library and can read some properties, but when an attempt to instantiate a class in the library is executed I get class not found even though I can read the public static properties from it.
I realize that Davlik byte code is not the same as Java byte code but I am having trouble even finding good information about how to solve what would seem to be a very simple issue in Android. I am looking into the old PlatformLibrary stuff right now but I am not convinced this will work either since the sample has been removed from the Android site.
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Mar 20, 2010
I am now writing a java application. On java side I use System.loadLibrary() to load my own native shared library( named a.so ). I want a.so can communicate with another native shared library(named b.so). When a.so and b.so are loaded in the memory, they belonged to 2 different process. I am not familiar with IPC in android and binder mechanism. How can I do to make a.so communicate with b.so?
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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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Nov 11, 2010
I am taking over a project, and am trying to launch it in the Android Emulator. I get the following error in Logcat:
11-11 06:21:42.215: ERROR/PackageManager(58): Package com.android.xxx requires unavailable shared library com.google.android.maps; failing!
Console displays:Installation error: INSTALL_FAILED_MISSING_SHARED_LIBRARY
How can I make sure com.google.android.maps is included in my project?
UPDATE:I am using a min sdk level of 3 in my androidmanifest.xml:
CODE:............
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Aug 3, 2009
we're developing applications that will use a single 'shared library' jar file. the jar file will be packed as part of the operating system (built & packed by us)several trials & errors & manual readings had led us to the conclusion that for our projects (both shared lib & dependent apps) to correctly compiled they must
(a) reside UNDER the mydroid source root and
(b) be compiled with the same java version as mydroid.
both a & b are somewhat inconvenient for us (the latter a bit more). is there a way around them?
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Dec 7, 2009
When i tried to execute my project. It is showing error as:- Package pack.com requires unavailable shared library com.google.android.maps; failing!
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Mar 8, 2010
I create one static library(alogrithm.a) by using android 2.0. Now I want to use this library to work at android 2.1. Can I rebuild source code to create at android 2.1? Or directly use this library binary file by creating android 2.0?
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Apr 14, 2010
I am currently moving from Xcode and iPhone development to Android with Eclipse. I want to have a shared code project so that I can store all the code to be shared across apps in one common library. However it would appear that the only android project available is for applications and not for code libs how can i achieve this?
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Aug 23, 2010
I have a static library, Foo, that is used by a shared library, Bar. Bar is the native shared library loaded by my Android app. Foo contains JNI functions that are only called by Java code and not by any C++ code in Bar. Because of this, those JNI functions get stripped out of the static library (Foo) when the shared library (Bar) is built. I'm currently using a slightly hacky method to prevent that from happening.So, in this case, is there a way to tell the compiler to not strip the JNI (or any) functions out when linking?
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Jan 24, 2012
I would like to extend the functionality of one of the shared native libraries called from within the android.jar code. How can I rebuild the affected shared libraries such that the android code can utilize my modifications?
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Sep 29, 2010
I'm getting an error when trying to use an external jar file to access Forward facing camera in Android. But when we try to load, i get error ""Installation error: INSTALL_FAILED_MISSING_SHARED_LIBRARY" on my console window of myeclipse.
"
when i saw a log file, the error was "unavailable shared library com.sprint.hardware.twinCamDevice"
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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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Dec 9, 2013
I have a thread on StackOverflow (titled: NoClassDefFoundError for Jersey 2.4.1 client in Android) but I thought I would reach out here in hope of getting a more specific/targeted audience group.I have followed instructions from other posts about the libs Android dependency fix but I still get the issue.
I am using Eclipse Juno, with an Android App targeting API 17. Basically I am getting a NoClassDefFoundError at runtime for the org. glassfish. jersey. model.internal.CommonConfig$1 class located in jersey-client-2.4.1.jar. This is when I just do a Run As... deploy from within Eclipse and it fails when I instantiate the CommonConfig class or one that depends on it internally. The start up log is given below:
[HIGH]12-10 12:25:20.657: I/dalvikvm(10170): Failed resolving Lorg/glassfish/jersey/model/internal/CommonConfig$1; interface 920 'Lcom/google/common/base/Function;'
12-10 12:25:20.657: W/dalvikvm(10170): Link of class 'Lorg/glassfish/jersey/model/internal/CommonConfig$1;' failed
12-10 12:25:20.657: E/dalvikvm(10170): Could not find class 'org.glassfish.jersey.model.internal.CommonConfig$ 1', referenced from method
[code]....
It doesn't seem to find a static inner class of CommonConfig. In the SO forum I tinkered with some options in ProGuard but I've come to learn that this isn't even used in the standard debug mode, only when you do a release build (Export from Eclipse). It would appear that something is happening with the class but I can't figure out why it would not be included if its parent is. Is there some kind of 'light' ProGuard process that goes on when a debug deploy is done? how to resolve this particular case of NoClassDefFoundError?
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Sep 14, 2010
I would like to know why the size of my shared library .so is bigger than my .apk file generated with Eclipse? Approximatly the so size is twice the apk one. What is strange is after having installed it in the device (2.1 firmware) I checked the size of the apk when I uninstalled it from the device and surprisingly the apk size indicated is bigger even than the .so one. Is there any explaination of that?
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Jun 20, 2012
I am looking for a music application for android that will allow me to stream from my music library that is on my NAS. I can share my music via CIFS/SMB, NFS or iTunes server. HTC Vision
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Mar 30, 2010
i want to display a msg to the user (msg box or Toast) when exception happend in a static SQLite Database class that i use. the problem is that i cant call a non static method in a static class , how can i handle this. this is the class
private static SQLiteDatabase getDatabase(Context aContext) {
and i want to add something like this in the class when exception happen but context generates the problem of reference to non static in static class.
Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
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Feb 7, 2010
I'm having some issues with the old "Cannot make a static reference to a non-static method" error in my Android program. I am creating a sand falling game (similar to the Powder Game) and I created a class called Control to create a Control Bar at the bottom of the screen with a slider for brush size (that works fine) and a button to pop up a Dialog to allow users to pick the selected element. However, when I call DemoActivity.showDialog(2) from my code, it gives the static reference to non-static error (DemoActivity is the main activity of my application). I also tried changing it to just Activity.showDialog(2), but I got exactly the same error!
Here's my code:
CODE:................
I fixed it by adding the following to my Control.java code:
CODE:..........
And then calling control.setActivity(this); from my onResume section of DemoActivity.java!
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May 26, 2010
I am modifying the source code here: http://thinkandroid.wordpress.com/2009/12/30/getting-response-body-of-httpresponse/
I get this error:
code:.............
This error is line 13 on the second box.
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