I know about that:
Inspect your APK or app bundle for native code.
You can check for .so files using APK Analyzer.
Identify whether they are built from your own code or are imported by an SDK or library that you are using.
If you do not have any .so files in your APK, you are already 64-bit compliant.
Enable 64-bit architectures and rebuild native code (.so files) imported by your own code. See the documentation for more details.
Upgrade any SDKs and libraries to 64-bit compliant versions, if needed. Reach out to the SDK or library owner if one is not available. We’re working with top library owners on their 64-bit compatibility.
Test for issues locally once you’ve rebuilt your app.
Rollout to your testers using testing tracks for thorough testing.
But I miss anything else? Any recommendations?
Thank you for your help!
If you have no native (NDK) code, that is you only write Java/Dex code, then you don't need to do anything.
If you have native code (or libraries) then you need to supply their 64-bit versions.
reference
Related
I want to know the exact difference between SDK Tool and Build Tools.According to some article and answer, both tools are used to build apk. I went through officials document but did't get anything.
Please provide difference/Detail of all Android SDK components.
SDK TOOL : A software development toolkit (SDK) is a set of software tools and programs provided by hardware and software vendors that developers can use to build applications for specific platforms.
BUILD TOOL : Build tools are programs that automate the creation of executable applications from source code. Building incorporates compiling, linking and packaging the code into a usable or executable form.
The Platform tools are more specifically suited to the version of Android that you want to target. Generally, it is best to install the latest Platform tools, after first installation though, you need to keep your Platform-tools constantly updated.
The Android Debug Bridge (ADB) is a program that allows you to communicate with any Android device. It relies on Platform-tools in order to understand the Android version that is being used.
The Android emulator is what lets you test and monitor apps on a PC, without necessarily needing to have a device available
In my understanding build tool will control the overall build process and will finally generate an APK using the SDK tools. Build toll uses zip align tool to optimize the app to use minimal memory and will use the app signer which signs the APK for verification. It can also use other additional tools for the build process.
I agree that names are confusing because the overall build systems are being developed over the years and new tools are introduced and sometimes old names are modified. For example, Build tools were under Platform-tools previously but later it got more importance and become a separate tool.
When I am trying to run one of my Java application (which is deployed in IBM Websphere App server), I am getting the below error,
java.lang.UnsatisfiedLinkError: PATH/file.so (EDC5253S An AMODE64
application is attempting to load an AMODE31 DLL load module.
(errno2=some_address)) at
java.lang.ClassLoader.loadLibraryWithPath(ClassLoader.java:1344)
Did anyone face the same issue of AMODE64 ?
Or could someone provide info on how to compile code to AMODE64.
Any reference in this would also be of great help.
Thanks in advance.
On z/OS, you can't have a mixed single-address application that has some parts compiled 31-bit and some parts compiled 64-bit, if you are using Language Environment. All modern high level languages -do- use Language Environment (e.g. C, C++, Java, COBOL, PL/I), and so this is what is causing your problem.
Depending on the version of Java you are using, you can either switch to a 31-bit JVM or (preferably) recompile and relink your C DLLs as 64-bit.
You asked for info on how to compile code in 64-bt mode, but typically, as the end-user, you would not be the one to do that, the provider of the native library/dll would do that because you need the source code. You replaced the file name of the library in the error message above with PATH/file.so, so I can't provide you any guidance on who the provider of that library might be. Using the name of the library, search for for the provider and then ask them for a version of the library compiled in 64-bit mode.
On the outside chance you own the code for the library, see this IBM KnowledgeCenter topic for information on how to compile and bind code in 64-bit mode.
I'm using Android Studio with Gradle in order to develop an application.
Is it necessary to create a different .APK to allow proper operation on X86 architecture (Asus Zenfone 2)?
As far as I understand all architectures are supported by default in the single .APK file that is built (arm, x86, ex86_64, armeabi-v7a, mips).
I know that it is possible to use splits closure in Gradle for different abi's but I would really like to avoid it.
Thanks,
If you are app is coded in Java:
You don't have to worry about the CPU architecture it will be running on.
Indeed, the runtime (Dalvik or ART) VM insulates your code from the underlying platform.
If you use the NDK:
A single APK can support multiple architectures. Follow the instructions here to make sure your APK includes the required libraries and support the architectures you target.
https://www.tizen.org/ Tizen Mobile & IPad Linux very exciting.
Its allowing GCC. But does it run Dalvik JVM or OpenJDK?
Will then it will be compatible with 32-bit or 64-bit compilers?
Or we need to convert our source to be re-compiled using ARM compilers? of GCC?
Will it be easier to port C, Java code's now to Tizen? Where its complex and not natively available under Android phones/platforms?
As far as I know, it will be possible to package applications as DEB or RPM packages, you will be able to include an embedded VM (for example Avian VM) if you want, probably no JVM will be installed by default. JavaSE Embedded and OpenJDK should work (maybe with small modifications) under Tizen even though the documention only mentions C/C++ for native apps and HTML5/JavaScript for web apps. Moreover, there is no Java binding to its native APIs yet except those already available for Linux ARM and for APIs supported in any Linux distribution (for example JOGL 2.0). If you really need some help to use Java under Tizen, please contact the JogAmp Foundation here. Xerxes already succeeded in running JOGL 2.0 under Meego as you can see here, why not doing the same thing under Tizen?
N.B: Don't expect official Java support under Tizen.
If you check this two presentation from May:
Tips and Tricks: Designing Low-Power Native and Web Apps on page 3.
and this
Implementation of Standard Accessibility APIs for Tizen on page 9.
You see that basically Tizen will have two APIs and hence two types of applications:
Native;
Web(HTML5) pretty well documented already.
So no JVM or OpenJDK, don't know the Native API apps binaries will be compiled to but probably will know soon.
Since Tizen is pretty much in development you can check from time to time the official site.
I have a very basic JNA test setup that I want to use to verify whether or not I can use JNA with Java 1.4 on SCO. Yes, this is very much a legacy project. No, I'm required to use these technologies. I've already verified that Java 1.4 is capable of supporting JNA by running it on a local Windows machine, however, when I move things over to a SCO VM I have setup and try to run it there, I get an UnsatisfiedLinkError:
jnidispatch (/com/sun/jna/openserver-ia32/libjnidispatch.so) not found in resource path
I can't seem to find a place where I can download this. I figured it might be bundled into the platform.jar on JNA's github, but alas not. So where can I get this?
Any help is greatly appreciated.
if you look inside the jna.jar, you can see the platforms they support (by default):
darwin
freebsd-amd64
freebsd-i386
linux-amd64
linux-arm
linux-i386
linux-ia64
linux-ppc
linux-ppc64
sunos-amd64
sunos-sparc
sunos-sparcv9
sunos-x86
w32ce-arm
win32-amd64
win32-x86
looks like you need to build your own for SCO (it uses ant, shouldn't be that hard).