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