如何链接的＆QUOT;跛脚＆QUOT; MP3连接codeR共享对象到Android Studio项目 [英] How to link the "lame" mp3 encoder shared object to an Android studio project

问题描述

我尝试编写使用跛脚MP3连接codeR Android应用程序。我的发展
环境的是Android 1.1工作室

I am trying to write an Android app that uses the Lame mp3 encoder. My development environment is Android Studio 1.1.

继下的提示
跛脚MP3恩codeR编译为Android
我设法安装Android NDK和编译跛。下
的 /应用/ src目录/主/库/ armeabi 的
我所获得的共享对象libmp3lame.so，用

Following the hints under Lame MP3 Encoder compile for Android I managed to install the Android NDK and compile Lame. Under /app/src/main/libs/armeabi I obtained the shared object "libmp3lame.so", with

libmp3lame.so：ELF 32位LSB的共享对象，ARM版本1（SYSV），动态链接（使用共享库），剥去

libmp3lame.so: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), dynamically linked (uses shared libs), stripped.

但是，试图加载该文件在一个简单的Andr​​oid Studio项目，利用

However, trying to load this file in a simple Android Studio project, utilizing

static {
    System.loadLibrary("mp3lame");
}

总是会导致以下错误：

always results in the following error:

java.lang.UnsatisfiedLinkError中：dalvik.system.PathClassLoader [DexPathList [zip文件/data/app/.../base.apk\"],nativeLibraryDirectories=[/data/app/.../lib/ arm64，/供应商/ lib64下，/系统/ lib64目录]]]找不到libmp3lame.so

java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/.../base.apk"],nativeLibraryDirectories=[/data/app/.../lib/arm64, /vendor/lib64, /system/lib64]]] couldn't find "libmp3lame.so"

我也试图装入文件

System.load(*full file name*);

但是这导致了同样的错误。

but this resulted in the same error.

据我至今读我认为这是一个问题的Gradle，但我不知道如何解决。任何帮助将大大AP preciated！

From what I've read so far I assume that this is a gradle issue but I have no clue how to solve that. Any help will be much appreciated!

我的Andr​​oid.mk看起来像这样

My Android.mk looks like this

LOCAL_PATH：= $（叫我-DIR）

LOCAL_PATH := $(call my-dir)

    include $(CLEAR_VARS)

    LOCAL_MODULE        := libmp3lame
    LOCAL_SRC_FILES     := \
    ./libmp3lame/bitstream.c \
    ./libmp3lame/encoder.c \
    ./libmp3lame/fft.c \
    ./libmp3lame/gain_analysis.c \
    ./libmp3lame/id3tag.c \
    ./libmp3lame/lame.c \
    ./libmp3lame/mpglib_interface.c \
    ./libmp3lame/newmdct.c \
    ./libmp3lame/presets.c \
    ./libmp3lame/psymodel.c \
    ./libmp3lame/quantize.c \
    ./libmp3lame/quantize_pvt.c \
    ./libmp3lame/reservoir.c \
    ./libmp3lame/set_get.c \
    ./libmp3lame/tables.c \
    ./libmp3lame/takehiro.c \
    ./libmp3lame/util.c \
    ./libmp3lame/vbrquantize.c \
    ./libmp3lame/VbrTag.c \
    ./libmp3lame/version.c

    LOCAL_LDLIBS := -llog

    include $(BUILD_SHARED_LIBRARY)

这是我的build.gradle

And this is my build.gradle

应用插件：'com.android.application

apply plugin: 'com.android.application'

安卓{
    compileSdkVersion 21
    buildToolsVersion21.1.2

android { compileSdkVersion 21 buildToolsVersion "21.1.2"

defaultConfig {
    applicationId "eu.martinloeser.android.lamefromscratch"
    minSdkVersion 15
    targetSdkVersion 21
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.3'
}

正如我以前说过，任何帮助将大大AP preciated！

As I said before, any help will be much appreciated!

推荐答案

感谢您的反馈意见。我终于得到它的工作。关键在于对build.gradle'文件中。

Thanks for your feedback. I finally got it to work. The key lies inside the 'build.gradle'-file.

在'defaultConfig'节你一定要告诉你要链接跛脚Android的工作室。因此，添加

In the 'defaultConfig'-section you have to tell Android studio that you want to link lame. Therefore, add

        ndk{
        moduleName "Lame"
        ldLibs "log"
    }

这奏效了我： - ）

干杯，

马丁

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