Couldn't load libPassword from loader：NDK开发中C文件编译成cpu的so类库时，找不到类库报错的原因之一

Posted 2020-06-17 Baum

LogCat输出：

03-03 12:42:32.665: E/androidRuntime(32432): FATAL EXCEPTION: main
03-03 12:42:32.665: E/AndroidRuntime(32432): Process: com.toro.passwordencode, PID: 32432
03-03 12:42:32.665: E/AndroidRuntime(32432): java.lang.UnsatisfiedLinkError: Couldn‘t load libPassword from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.toro.passwordencode-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.toro.passwordencode-1, /vendor/lib, /system/lib]]]: findLibrary returned null
03-03 12:42:32.665: E/AndroidRuntime(32432):     at java.lang.Runtime.loadLibrary(Runtime.java:358)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at java.lang.System.loadLibrary(System.java:526)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at com.toro.passwordencode.MainActivity.<clinit>(MainActivity.java:15)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at java.lang.Class.newInstanceImpl(Native Method)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at java.lang.Class.newInstance(Class.java:1208)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2116)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2258)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.app.ActivityThread.access$800(ActivityThread.java:147)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1211)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.os.Handler.dispatchMessage(Handler.java:102)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.os.Looper.loop(Looper.java:136)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at android.app.ActivityThread.main(ActivityThread.java:5135)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at java.lang.reflect.Method.invokeNative(Native Method)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at java.lang.reflect.Method.invoke(Method.java:515)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611)
03-03 12:42:32.665: E/AndroidRuntime(32432):     at dalvik.system.NativeStart.main(Native Method)

Android.mk代码如下：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

#LOCAL_MODULE    := libEncodePassword #导致错误的行，此处so类库名前不能以“lib”开头。应该是编译时生成的so类库文件都以lib为前缀有冲突。此处打个问号，求解
LOCAL_MODULE    := EncodePassword #正确行#
LOCAL_SRC_FILES := Password.c

include $(BUILD_SHARED_LIBRARY)

 

MainActivity.java代码如下：

    //加载cpu架构对应so类库
    static{
        //System.loadLibrary("libEncodePassword"); //导致错误的行，此处so类库名前不能以“lib”开头
        System.loadLibrary("EncodePassword"); //正确
    }