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android-studio - Android ndk 示例原生音频错误

转载 作者:行者123 更新时间:2023-12-03 17:06:02 24 4
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我尝试使用 OpenSl ES 的示例代码,它包含在 Android Studio 的 NDK 中。正如您稍后将看到的那样,它不起作用。所以我需要帮助才能使用 Android Studio 中的代码。 该代码是为 Eclipse 编写的,但我使用了 Android Studio 中的导入功能来包含它。我也尝试了 Eclipse,它运行良好,但是当尝试在 Android Studio 中运行代码时,我得到以下错误代码

/home/flex/AndroidStudioProjects/native-audio1/app/src/main/jni/native-audio-jni.c
Error:(155) undefined reference to `slCreateEngine'
Error:(165) undefined reference to `SL_IID_ENGINE'
Error:(165) undefined reference to `SL_IID_ENGINE'
Error:(170) undefined reference to `SL_IID_ENVIRONMENTALREVERB'
Error:(170) undefined reference to `SL_IID_ENVIRONMENTALREVERB'
Error:(215) undefined reference to `SL_IID_BUFFERQUEUE'
Error:(215) undefined reference to `SL_IID_EFFECTSEND'
Error:(215) undefined reference to `SL_IID_VOLUME'
Error:(215) undefined reference to `SL_IID_BUFFERQUEUE'

...

collect2: error: ld returned 1 exit status
make: *** [/home/flex/AndroidStudioProjects/native-audio1/app/build/intermediates/ndk/debug/obj/local/arm64-v8a/libnative-audio-jni.so] Error 1
Error:Execution failed for task ':app:compileDebugNdk'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/home/flex/android-ndk-r10e/ndk-build'' finished with non-zero exit value 2
Information:BUILD FAILED
Information:Total time: 2.942 secs
Information:38 errors
Information:0 warnings
Information:See complete output in console

到目前为止我做了什么:我变了build.gradle (app) 到

apply plugin: 'com.android.application'

android {
compileSdkVersion 21
buildToolsVersion "21.1.2"

defaultConfig {
applicationId "com.example.nativeaudio"
minSdkVersion 19
targetSdkVersion 19

ndk {
moduleName "native-audio-jni" //I included this one
}
}

buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}

}

我进一步将 local.properties 更改为

sdk.dir=/home/flex/Android/Sdk
ndk.dir=/home/flex/android-ndk-r10e

我的 Android.mk 看起来像这样

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := native-audio-jni
LOCAL_SRC_FILES := native-audio-jni.c
# for native audio
LOCAL_LDLIBS += -lOpenSLES
# for logging
LOCAL_LDLIBS += -llog
# for native asset manager
LOCAL_LDLIBS += -landroid

include $(BUILD_SHARED_LIBRARY)

我的应用程序.mk:

APP_ABI := all

最佳答案

解决方案是编译源代码两次。

所以在终端我第一次用命令编译:ndk-build
我第二次使用命令:ndk-build TARGET_PLATFORM=android-xy
xy必须换成android版本

这绝对不是正确的方法,但至少它使它起作用了。

关于android-studio - Android ndk 示例原生音频错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30314557/

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