Armeabi armeabi-v7a mips x86 understanding, armeabiarmeabi-v7aIntroduction
Armeabi, armeabi-v7a, mips, x86 how to understand?
ABI: indicates the instruction set based on which the application is compiled. ABI has four types:
In the ANE if the SDK calls the so library, you need to place the so library under the ANE Android-arm/lib/armeabi (debug mode) or armeabi-v7a (release mode).You can put an ADT code to illustrate the problem:Whether M_configtype.equals ("apk") is a release mode(Hascaptiveruntime () with Run-timeif ((M_configtype.equals ("apk")) | | (Hascaptiveruntime ())){Destapk
The CPU type of the Android device (often referred to as "ABIs")
ARMEABIV-V7A: 7th-generation and above ARM processors. Most of the Android devices produced since May 2011 use it.
ARM64-V8A: 8th generation, 64-bit ARM processor, few devices, Samsung Galaxy S6 is one of them.
Armeabi: 5th generation, 6th generation ARM processor, early mobile phone use more.
x86: There are more plates an
The CPU type of an Android device is often referred to as Abis
Problem description
Workaround
1 before the resolution
2 after the settlement
3 workaround
Why you need to focus on so files
Where the app might go wrong
Other places could be wrong.
So files compiled with the ANDROID-21 platform version run on ANDROID-15 devices
Mixing so files with different C run-time compilations
No corresponding so files are provided
Many friends in the development of the Android JNI, will encounter Findlibrary returned null error, for some reason, so is not packaged into the APK. The following is an analysis of the cause of the error and platform compatibility issues.First, there is no reason to pack so into the APK.When you find findlibrary returned null error, the most straightforward solution is to unzip the APK to see if there is a corresponding so in the x86, Armeabi, and
Many friends in the development of the Android JNI, will encounter Findlibrary returned null error, for some reason, so is not packaged into the APK. The following is an analysis of the cause of the error and platform compatibility issues.first, there is no reason to pack so into the APK. When you find the findlibrary returned null error, the most straightforward solution is to unzip the APKto see the APK x86, Armeabi, If there is a corresponding so i
1. After OpenCV is transplanted to android, an error occurs during development: android fatal signal 11 (SIGSEGV) at 0 xdeadbaad (code = 1 ). some people say that AsyncTask is used in the program. It happens that it is actually used in my program. However, after careful research, it is found that if the error is: android fatal signal 11 (SIGSEGV) at 0 xdeadbaad (code = 1). The first check is the local C/C ++ code error. It turns out that the matrix dimension is incorrect during opencv operations
First, a wave of literacy:Armeabi: for normal or old arm v5 CPUsarmeabi-v7a: arm v7 CPUs (32-bit ARM devices) with floating-point arithmetic or advanced expansion capabilitiesarm64-v8a:64-bit ARM deviceAndroid L only really support 32-bit and 64-bit art virtual machines, with 64-bit processors, justify running 64-bit softwareCompatibility and file read orderARM64-V8A can be backwards compatible, with Armeabi
I. opencv transplanted to Android, encountered in the development of the error: Android fatal signal 11 (SIGSEGV) at 0 xdeadbaad (code = 1). It is very tangled, refer to the https://community.freescale.com/docs/DOC-93378 Terminal. However, after careful research, it is found that if the error is: Android fatal signal 11 (SIGSEGV) at 0 xdeadbaad (code = 1). The first check is the local C/C ++ code error. It turns out that the matrix dimension is incorrect during opencv operations, leading to prog
Remember the former compiled so library directly using Ndk-build, today using the error is as follows:notdirectory ! thevariabletotoit. /opt/android-ndk-r10b/build/core/build-local.mk:148: *** Android NDK: Aborting . Stop.An expert's weapon is as follows:You need toSpecify3Things. Ndk_project_path- theLocation ofYour PROJECTNDK_APPLICATION_MK- thePath of theApplication.mkfileApp_build_script- thePath to theAndroid.mkfileThese is needed toOverride theDefault values of theBuild script
Error message java.lang.UnsatisfiedLinkError:Couldn ' t load baidumapsdk_v3_2_0_15 from loader dalvik.system.pathclassloader[ Dexpathlist[[zip file "/data/app/com.example.baidudemo-1.apk"],nativelibrarydirectories=[/data/app-lib/ Com.example.baidudemo-1,/vendor/lib,/system/lib]]: Findlibrary returned nullIn Lib found obviously have libbaidumapsdk_v3_2_0_15.so this file, but why still error .... Wrote a demo found, no error, the last one to speculate, foundThe difference is
project is imported into the second project as a project reference.2, after the settlement:As can be seen, in the first project and the second project does not have the Libs directory, are armeabi-v7a, Armeabi, x86 three directories, consistent. The first project is imported into the second project as a project reference.3. Solution:The solution is: from the AU
Key class: Android.os.build.*If you need to adapt to different phone brands, you can use the phone manufacturer (manufacturer) information to do code control, more accurate some of the models can be used, model can be more accurate to a mobile phone.The following is a record of some of my mobile phone information:The information obtained by product and device is also less stable, such as red Rice 3 is ido.Charm Blue Note5ID: NRD90MDISPLAY: Flyme 6.3.0.2APRODUCT: meiz
The early Android system almost only supported the ARMV5 CPU architecture, do you know how many of these are supported today? 7 kinds.The Android system now supports the following seven different CPU architectures: ARMV5. ARMV7 (since 2010), x86 (from 2011 onwards), MIPS (from 2012 onwards), Armv8,mips64 and x86_64 (from 2014), each of which is associated with a corresponding ABI.The Application Binary interface (application binary Interface) defines how binary files (especially. so files) are e
the. so file that your gdb uses to calculate the address. The most common cause of this is when Android is loaded with a bug that does not load the file under the armeabi-v7a directory, but instead loads the library file in the Armeabi directory. If you think it might be the case, try to modify the build configuration, either on the
tag, under gradle1.10 Debug, Release needs to be placed in the buildtypes tag, buildtypes in Android. Here Hellojni configuration of the Build.gradle file content is as follows:Assert gradle.gradleversion >= "1.10" Apply plugin: ' Android-library ' Android {compilesdkversion buildtoolsvers Ion "19.0.3" Defaultconfig {minsdkversion 8 targetsdkversion versioncode 1 versionname "1.0"} buildtypes {release {Runproguard false proguardfiles getdefaultproguardfile (' Proguard-android.txt '), ' Proguard
The difference between armeabi and armeabi-v7a in the libs folder of Android causes the problem that the positioning of Baidu map does not execute the positioning callback function.
Regarding the second problem encountered during development, I said that it was in a numb state. I am referring to the problem because it has plagued me for at least two days, after I
test_signed.apk test.apk android123.keystoreJarsigner is a Java signature tool.-Verbose parameter indicates that the signature details are displayed.-Keystore: Use android123.keystore in the current directory to sign the certificate file.-Signedjar test_signed.apk?generated after the signature, test.apk indicates the unsigned APK Android software, and android. keystore indicates the alias
(3), the signature generated after the META-INT folder, which contains the file is as follows:
Through th
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