Android Java调用.so和.a、Unity C#调用jar插件和C++开发的插件



Android Java调用libtwolib-first.a
输入：
新建jni目录，放入libtwolib-first.a、first.h、second.c、Android.mk四个文件
输出：
libtwolib-second.so（打包进apk了）、Caculator.apk
过程：
Android.mk内容如下：
LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

#下面这句加上去
LOCAL_LDFLAGS := $(LOCAL_PATH)/libtwolib-first.a
LOCAL_MODULE    := twolib-second
LOCAL_SRC_FILES := second.c

include $(BUILD_SHARED_LIBRARY)
second.c内容如下：
#include "first.h"
#include <jni.h>

jint Java_com_suhan_Caculator_add( JNIEnv*  env,
                                      jobject  this,
                                      jint     x,
                                      jint     y )
{
    //return x+y;
 return first(x,y);
}
Caculator内容如下：
package com.suhan;
    public native int add(int  x, int  y);
    static {        
     System.loadLibrary("hello-jni");
     System.loadLibrary("demo-jni");
     System.loadLibrary("twolib-second");
    }
点击按钮：
    int x = 3;
    int y = 50;
    int z = add(x, y);
    String Z = Integer.toString(z);
    answerValue.setText(Z);
右击Caculator工程属性，新建并配置一个Builder
Location填：
F:\android-ndk-r9\ndk-build.cmd
Working Directory填：
F:\adt-bundle-windows-x86_64-20130729\workspace001\Caculator
或
${workspace_loc:/Caculator}
点击Project|Clean，选中Caculator，即可生成libtwolib-second.so
点击Run Caculator按钮，即可生成Caculator.apk

Android Java调用libhello-jni.so、libdemo-jni.so
正确的：
HelloJni.java
package com.example.hellojni;

public class HelloJni {
 public native String stringFromJNI();
}
F:\adt-bundle-windows-x86_64-20130729\workspace001\Caculator\src\com\example\NativeMD5.java
package com.example;

public class NativeMD5 {
 
 
 public native String encryptMD5(String text);
 
}

Caculator.java
package com.suhan;
import com.example.hellojni.HelloJni;
import com.example.NativeMD5;
public class Caculator extends Activity{
 private HelloJni lib = new HelloJni();
 private NativeMD5 md5 = new NativeMD5();

点击按钮：
    String x=lib.stringFromJNI(); 
    answerValue.setText(x);  
     String x=md5.encryptMD5("123"); 
    answerValue.setText(x);

    static {       
     System.loadLibrary("hello-jni");
     System.loadLibrary("demo-jni");
    }

20150602测试Android回调Unity：
Android Java部分：
    public static void AndroidFunc1(String arg)
    {   
        UnityPlayer.UnitySendMessage("Main Camera","UnityFunc1",arg);  
    }
 
    public static void AndroidFunc2()
    {   
        UnityPlayer.UnitySendMessage("Main Camera","UnityFunc1","--AndroidFunc2--");  
    }
Unity C#部分：
   if(bflag)
   {
    ajc.CallStatic("AndroidFunc2");
   }
   else
   {
    ajc.CallStatic("AndroidFunc1", new string[]{"Call 韩AndroidFunc1 2"});;
   }
   bflag=!bflag;
  void UnityFunc1(string str)  
 {  
  strTest=str;
 }

Android Java部分：
/UnityCPP/src/com/Bjoy/UnityCPP/MainActivity.java代码如下：
package com.Bjoy.UnityCPP;

import android.os.Bundle;
import android.view.Menu;

import com.unity3d.player.UnityPlayerActivity;

 

public class MainActivity extends UnityPlayerActivity {
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  //setContentView(R.layout.activity_main);
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  //getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }
 
 
    //判断大小 
    public static int Max(int a,int b) 
    { 
        if(a>b) 
            return a; 
        return b; 
    } 

 

}

命令行生成jar：
F:\adt-bundle-windows-x86_64-20130729\workspace001\UnityCPP\bin\classes>jar cvf com.Bjoy.UnityCPP.jar com\
或者
F:\soft\Android Tools\adt-bundle-windows-x86_64-20140702\workspace\UnityCPP\bin\classes>jar cvf com.Bjoy.UnityCPP.jar com
com.Bjoy.UnityCPP.jar放在F:\client\SimplestPluginExample\Unity Project Plugin\Assets\Plugins\Android\bin目录下
AndroidManifest.xml和res放在F:\client\SimplestPluginExample\Unity Project Plugin\Assets\Plugins\Android目录下

Unity C#部分：
 private AndroidJavaClass ajc;
 private int res = 0;

  //通过unity提供的访问java插件的帮助类来找到我们的插件并创建对象
  ajc = new AndroidJavaClass("com.Bjoy.UnityCPP.MainActivity");
  res =ajc.CallStatic<int>("Max", new object[] { 10, 20 });

  GUI.Label(new Rect(450, 420, 900, 120), "Max(10,20)="+res.ToString());
  if(GUI.Button(new Rect(100,420,200,100), "ClickShake")) 
  { 
   res =ajc.CallStatic<int>("Max", new object[] { 6, 14 });
  }

获取小米手机的物理地址：
ac:f7:f3:5b:13:02
查看路由器信息：
http://10.10.10.1/
主机名: MI2S-xiaomishou
ji
IP地址: 10.10.10.106
MAC地址: AC:F7:F3:5B:13:02 

Android Java部分：
import android.util.Log;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
 public static MainActivity inst;
 
 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main);
        inst = this;
    }
 public static String getAndroidMacID()  
 {
   
     String str = null;  
   
     WifiManager wifi = (WifiManager)inst.getSystemService(Context.WIFI_SERVICE);    
     WifiInfo info = wifi.getConnectionInfo();    
     str = info.getMacAddress();    
   
     if(str==null)
     {  
         Log.e("获取android mac地址失败", "0000000"); 
     }  
     Log.e("获取android mac地址 "+str, "00000000");  
   
     return str;
 }
Unity C#部分：
string strTest;
strTest=ajc.CallStatic<string>("getAndroidMacID");
GUI.Label(new Rect (450, 50, 900, 120),strTest);

AndroidManifest.xml添加：
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
请将minSdkVersion的值改为9，如果出现下列错误：
Description Resource Path Location Type
Call requires API level 9 (current min is 8): android.app.NativeActivity#getSystemService MainActivity.java 

/UnityCPP/src/com/Bjoy/UnityCPP line 51 Android Lint Problem

使用ndk构建共享库libASimplePlugin.so：
在F:\android-ndk-r9\samples\test-libstdc++下创建一个jni的文件夹（注：不能是其它文件夹名），接着在文件夹中创建代码文件ASimplePlugin.cpp和一个配置文件Android.mk。
先看看C++文件ASimplePlugin.cpp
/*
 This is a simple plugin, a bunch of functions that do simple things.
*/

extern "C" {
 const char* PrintHello(){
  return "Hello";
 }

 int PrintANumber(){
  return 5;
 }

 int AddTwoIntegers(int a, int b) {
  return a + b;
 }

 float AddTwoFloats(float a, float b) {
  return a + b;
 }
}
再看看配置文件Android.mk，文件中比较重要的两个变量 LOCAL_MODULE表示生成出的.so的名称 LOCAL_SRC_FILES 表示需要编译的文件，如果是多个C/C++文件中间需要使用  \ 隔开。
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE := ASimplePlugin

LOCAL_SRC_FILES := ASimplePlugin.cpp
include $(BUILD_SHARED_LIBRARY)
执行ndk-build即可生成so库：
F:\android-ndk-r9\samples\test-libstdc++\jni>F:\android-ndk-r9\ndk-build.cmd
F:/android-ndk-r9/samples/test-libstdc++//jni/Android.mk:10: UILD_SHARED_LIBRARY
: No such file or directory
F:/android-ndk-r9/build/core/build-all.mk:89: Android NDK: WARNING: There are no
 modules to build in this project!
make: *** No rule to make target `UILD_SHARED_LIBRARY'.  Stop.

F:\android-ndk-r9\samples\test-libstdc++\jni>F:\android-ndk-r9\ndk-build.cmd
"Compile++ thumb : ASimplePlugin <= ASimplePlugin.cpp
SharedLibrary  : libASimplePlugin.so
Install        : libASimplePlugin.so => libs/armeabi/libASimplePlugin.so
构建了共享库后，必须把共享库复制到unity3d工程中的Assets->Plugins->Android目录下。然后就可以在Unity中使用这个插件了。
Unity中调用F:\client\UnityTest20150509\Assets\Plugins\PluginName.dll、F:\client\SimplestPluginExample\Unity Project Plugin\Assets\Plugins\Android\libASimplePlugin.so：
SomeScript.cs中平台无关代码如下：
using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;

public class SomeScript : MonoBehaviour {
 // This tells unity to look up the function FooPluginFunction
 // inside the plugin named "PluginName"
 [DllImport ("PluginName")]
 private static extern float FooPluginFunction ();
 void Awake () {
  // Calls the FooPluginFunction inside the PluginName plugin
  // And prints 5 to the console
  print (FooPluginFunction ());
 }

 // Use this for initialization
 void Start () {
 
 }
 
 // Update is called once per frame
 void Update () {
 
 }
}

Win8下C#调用C++编译的32位标准DLL：
F:\hxhwin7\c#参考\myc#>cl /c PluginName.cpp
F:\hxhwin7\c#参考\myc#>link /DLL /OUT:PluginName.dll PluginName.obj
F:\hxhwin7\c#参考\myc#>csc /platform:x86 PluginName0.cs
Microsoft(R) Visual C# 编译器版本 4.0.30319.33440
用于 Microsoft(R) .NET Framework 4.5
版权所有 (C) Microsoft Corporation。保留所有权利。

F:\hxhwin7\c#参考\myc#>PluginName0
FooPluginFunction()=5

PluginName0.cs代码如下：
using System;
using System.Runtime.InteropServices;

namespace Han
{
 class PluginName0
 {
  // inside the plugin named "PluginName"
  [DllImport("PluginName")]
  private static extern float FooPluginFunction();

  static void Main()
  {
   Console.WriteLine("FooPluginFunction()="+FooPluginFunction());
  }
 }
}

托管C++控制台程序命令行编译的例子：
using namespace System;

int main(array<System::String ^> ^args)
{
    Console::WriteLine(L"Hello World");
    Console::Read();
    return 0;
}
F:\hxhwin7\vcnet>cl /CLR ex20150507.cpp
Microsoft(R) C/C++ 优化编译器版本 16.00.30319.01
用于 Microsoft(R) .NET Framework 版本 4.00.30319.34014
版权所有(C) Microsoft Corporation。保留所有权利。

ex20150507.cpp
Microsoft (R) Incremental Linker Version 10.00.30319.01
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:ex20150507.exe
ex20150507.obj

F:\hxhwin7\vcnet>ex20150507
Hello World
C#调用C#编写的DLL：
F:\hxhwin7\vcnet>csc /target:library /out:MyDLL.DLL MySwap.cs MyMaxCD.cs
F:\hxhwin7\vcnet>csc /out:MyClient.exe /reference:MyDLL.DLL MyClient.cs
或
F:\hxhwin7\vcnet>csc /reference:MyDLL.DLL MyClient.cs
F:\hxhwin7\vcnet>MyClient 123 456
The result of swap is num1 = 456 and num2 =123
The MaxCD of 456 and 123 is 3