让Android NDK与libspotify一起使用

时间:2012-11-06 21:44:45

标签: android-ndk spotify

我试图将libspotify用于Android应用程序,但我在构建我的c包装器时遇到了一些问题。我创建了一个非常小的包装器,只询问libspotify它的版本是什么。

我的文件夹结构如下所示:

jni
 |-libs
 |  |-Android.mk
 |  |-libspotify.so    (symlink)
 |  |-libspotify.so.12 (symlink)
 |  |-libspotify.so.12.1.51
 |
 |-include
 |  |-libspotify
 |     |-api.h
 |
 |-Android.mk
 |-spotifywrap.c

/jni/Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_SHARED_LIBRARIES := libspotify
LOCAL_MODULE := spotifywrap
LOCAL_SRC_FILES := spotifywrap.c
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
include $(BUILD_SHARED_LIBRARY)

/jni/spotifywrap.c

include <jni.h>
include <libspotify/api.h>

jstring Java_com_example_ndktest_MainActivity_getBuild(JNIEnv * env, jobject this)
{
    jstring result = (*env)->NewStringUTF( env, sp_build_id() );
    return result;
}

/jni/libs/Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_MODULE := libspotify
LOCAL_SRC_FILES := libspotify.so
include $(PREBUILT_SHARED_LIBRARY)

当我运行ndk-build时,我得到了这个:

spotifywrap.c:6: undefined reference to `sp_build_id'

sp_build_id是api.h中接口的一部分。

关于我做错什么的任何想法?

1 个答案:

答案 0 :(得分:1)

我感觉jni子目录中的目录结构是导致问题的原因。尝试编辑Android.mk构建文件以添加此内容:

LOCAL_CPPFLAGS = -std=c++0x -D__STDC_INT64__
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include

另外,我觉得您需要将libspotify.so复制到顶级libs/armeabi目录才能成功链接。