如何在Android的第二个项目中使用.so？

Question

我正在做一个应用程序在Android上使用本机代码与JNI，我有一个问题给你。

我在C++中构建了一些代码来创建.so库。那么我使用这个.so在我的项目和我的Nexus 5工作正常，但当我尝试在其他设备应用程序崩溃。

我做了很多测试和失败是由于在我的项目中使用这个.so，但我不知道，因为在nexus 5是好的，在其他设备没有。

这是我的Android.mk：

LOCAL_PATH := $(call my-dir) 

# Create `DSP-prebuilt` local prebuilt library from `DSP.so` 
include $(CLEAR_VARS) 
LOCAL_MODULE   := DSP-prebuilt 
LOCAL_SRC_FILES   := lib/libDSP.so 
LOCAL_EXPORT_C_INCLUDES := C:\libreriasSISTOLE\SP++3.0\SP++3.0\include 
include $(PREBUILT_SHARED_LIBRARY) 

include $(CLEAR_VARS) 
LOCAL_SRC_FILES := nativo.cpp Parameters.cpp Pre_proc_mono.cpp Calc_ToF_low.cpp Runnable.cpp Trilateracion.cpp Tracking.cpp qr_solve.cpp r8lib.cpp 
LOCAL_C_INCLUDES += $(LOCAL_PATH) 
LOCAL_LDLIBS  += -llog -ldl 
LOCAL_MODULE  := native_code 
# Reference the local prebuilt: 
LOCAL_SHARED_LIBRARIES := DSP-prebuilt 
include $(BUILD_SHARED_LIBRARY) 

，这我的logcat：

01-23 14:42:12.556: E/AndroidRuntime(19380): FATAL EXCEPTION: main 
01-23 14:42:12.556: E/AndroidRuntime(19380): java.lang.ExceptionInInitializerError 
01-23 14:42:12.556: E/AndroidRuntime(19380): at com.sistoleaudiocapture.Sistole_main.onCreate(Sistole_main.java:62) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.Activity.performCreate(Activity.java:5244) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1082) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2037) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2098) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.ActivityThread.access$600(ActivityThread.java:138) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1204) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.os.Handler.dispatchMessage(Handler.java:99) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.os.Looper.loop(Looper.java:137) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at android.app.ActivityThread.main(ActivityThread.java:4905) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at java.lang.reflect.Method.invokeNative(Native Method) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at java.lang.reflect.Method.invoke(Method.java:511) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at dalvik.system.NativeStart.main(Native Method) 
01-23 14:42:12.556: E/AndroidRuntime(19380): Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: link_image[1891]: 217 could not load needed library 'libDSP.so' for 'libnative_code.so' (load_library[1093]: Library 'libDSP.so' not found) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at java.lang.Runtime.loadLibrary(Runtime.java:370) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at java.lang.System.loadLibrary(System.java:535) 
01-23 14:42:12.556: E/AndroidRuntime(19380): at com.sistoleaudiocapture.Processing.<clinit>(Processing.java:11) 
01-23 14:42:12.556: E/AndroidRuntime(19380): ... 15 more 

终于这是我处理类，其中i加载本地库：

package com.sistoleaudiocapture; 
import android.util.Log; 
public class Processing { 

    private long retorno; 
    private double prueba[]; 

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

    public Processing() { 
     retorno = init_variables(); 

    } 

    public double[] prueba(byte[] data, int lenbytes) { 

     prueba = prueba_nativa(retorno, data, lenbytes); 

     return (prueba); 

    } 

    private static native long init_variables(); 

    private static native double[] prueba_nativa(long retorno, byte[] data, 
      int lenbytes); 

} 

[求助]

在加载本机库之前，我在Processing类中添加了System.loadLibrary("DSP");，并且它的罚款。

Answer 1

217 could not load needed library 'libDSP.so' for 'libnative_code.so' (load_library[1093]: Library 'libDSP.so' not found

你需要预加载你的依赖。确保它们也存在。

static { 
    System.loadLibrary("DSP"); 
    System.loadLibrary("native_code"); 
}