E/dalvikvm( 2456): ERROR: couldn't find native method

对比了下native 函数传参返回值 ，看起来没错，但就是报没找到native函数，但是用历史遗留已经Build出来的apk就没有这个问题。

所以问题应该出现在apk的mk 文件里面。

后来搜索E/dalvikvm( 2456): ERROR: couldn't find native method的关键字找到了解决方法：

在mk文件里面加入这一行：LOCAL_PROGUARD_ENABLED := disabled

如果没加的话就会混淆代码进行优化，可能导致native文件找不到而出现问题。

V/playerManager( 2456): .... loadLibrary mm_player_jni

I/C_MM_Sample_JNI( 2456): audiomanager JNI_OnLoad

E/dalvikvm( 2456): ERROR: couldn't find native method

E/dalvikvm( 2456): Requested: Lcom/ics/mm/PlayerManager;.deinit:()I

I/C_MM_Sample_JNI( 2456): RegisterNatives failed for 'com/ics/mm/PlayerManager'

I/C_MM_Sample_JNI( 2456): ERROR: registerNatives failed

W/dalvikvm( 2456): Exception Ljava/lang/NoSuchMethodError; thrown while initializing Lcom/ics/mm/PlayerManager;

D/AndroidRuntime( 2456): Shutting down VM

W/dalvikvm( 2456): threadid=1: thread exiting with uncaught exception (group=0x41f6eba8)

E/AndroidRuntime( 2456): FATAL EXCEPTION: main

E/AndroidRuntime( 2456): Process: com.player, PID: 2456

E/AndroidRuntime( 2456): java.lang.NoSuchMethodError: no static or non-static method "Lcom/ics/mm/PlayerManager;.deinit()I"

E/AndroidRuntime( 2456):        at java.lang.Runtime.nativeLoad(Native Method)

E/AndroidRuntime( 2456):        at java.lang.Runtime.doLoad(Runtime.java:421)

E/AndroidRuntime( 2456):        at java.lang.Runtime.loadLibrary(Runtime.java:362)

E/AndroidRuntime( 2456):        at java.lang.System.loadLibrary(System.java:526)

E/AndroidRuntime( 2456):        at com.ics.mm.PlayerManager.<clinit>(PlayerManager.java:227)

E/AndroidRuntime( 2456):        at com.player.MM_demoActivity.<init>(MM_demoActivity.java:18)

E/AndroidRuntime( 2456):        at java.lang.Class.newInstanceImpl(Native Method)

E/AndroidRuntime( 2456):        at java.lang.Class.newInstance(Class.java:1208)

E/AndroidRuntime( 2456):        at android.app.Instrumentation.newActivity(Instrumentation.java:1061)

E/AndroidRuntime( 2456):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2101)

E/AndroidRuntime( 2456):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)

E/AndroidRuntime( 2456):        at android.app.ActivityThread.access$800(ActivityThread.java:135)

E/AndroidRuntime( 2456):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)

E/AndroidRuntime( 2456):        at android.os.Handler.dispatchMessage(Handler.java:102)

E/AndroidRuntime( 2456):        at android.os.Looper.loop(Looper.java:136)

E/AndroidRuntime( 2456):        at android.app.ActivityThread.main(ActivityThread.java:5001)

E/AndroidRuntime( 2456):        at java.lang.reflect.Method.invokeNative(Native Method)

E/AndroidRuntime( 2456):        at java.lang.reflect.Method.invoke(Method.java:515)

E/AndroidRuntime( 2456):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)

E/AndroidRuntime( 2456):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:604)

E/AndroidRuntime( 2456):        at dalvik.system.NativeStart.main(Native Method)

W/ActivityManager( 1581):   Force finishing activity com.player/.MM_demoActivity

D/dalvikvm( 1651): GC_EXPLICIT freed <1K, 15% free 7642K/8948K, paused 5ms+4ms, total 49ms

参考博客：http://www.tuicool.com/articles/uUFrMj