Unity3D与Android互相调用踩坑总结

来源：https://blog.csdn.net/kongxingxing/article/details/81119831

1.引入unity的 classes.jar包
本人安装unity-5.6.1版本，目录为D:Program Filesunity-561UnityEditorDataPlaybackEnginesAndroidPlayerVariationsmonoReleaseClassesclasses.jar

若直接将classes.jar导入AndroidStudio项目，编译出aar,Unity编译会报错：

IOException: Failed to Move File / Directory from 'Temp/StagingAreaandroid-librariesapp-debugclasses.jar' to 'Temp/StagingAreaandroid-librariesapp-debuglibsclasses.jar'.
UnityEditor.Android.PostProcessor.Tasks.ProcessAAR.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (BuildPostProcessArgs args)
UnityEditor.PostprocessBuildPlayer.Postprocess (BuildTargetGroup targetGroup, BuildTarget target, System.String installPath, System.String companyName, System.String productName, Int32 width, Int32 height, System.String downloadWebplayerUrl, System.String manualDownloadWebplayerUrl, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.BuildReporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:186)
UnityEditor.HostView:OnGUI()
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将classes.jar更名unity-classes.jar后又报如下错误：

CommandInvokationFailure: Unable to convert classes into dex format.
D:/Program Files/Java/jdk1.8.0_181injava.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="D:/AndroidSDK ools" -Dfile.encoding=UTF8 -jar "D:Program Filesunity-561UnityEditorDataPlaybackEnginesAndroidPlayer/Toolssdktools.jar" -

stderr[
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lbitter/jnibridge/JNIBridge;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lbitter/jnibridge/JNIBridge$a;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/NativeLoader;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/ReflectionHelper;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/ReflectionHelper$1;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/ReflectionHelper$a;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/UnityPlayer;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/UnityPlayer$1;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/UnityPlayer$10;

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.RuntimeException: Translation has been interrupted
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:614)
at com.android.dx.command.dexer.Main.runMonoDex(Main.java:310)
at com.android.dx.command.dexer.Main.runDx(Main.java:288)
at com.android.dx.command.dexer.Main.main(Main.java:244)
at com.android.dx.command.Main.main(Main.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at SDKMain.main(SDKMain.java:130)
Caused by: java.lang.InterruptedException: Too many errors
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:606)
... 9 more
]
stdout[
processing archive D:UnityWorkSpaceNew Unity ProjectTempStagingAreaandroid-librariesapp-debuglibs.classes.jar...
processing com/example/cyk/myapplication1/BuildConfig.class...
processing com/example/cyk/myapplication1/UnityActivity.class...
processing com/example/cyk/myapplication1/UnityActivity$1.class...
processing archive D:UnityWorkSpaceNew Unity ProjectTempStagingAreaandroid-librariesapp-debuglibs.unity-classes.jar...
processing bitter/jnibridge/JNIBridge.class...
processing bitter/jnibridge/JNIBridge$a.class...
processing com/unity3d/player/NativeLoader.class...
processing com/unity3d/player/ReflectionHelper.class...
processing com/unity3d/player/ReflectionHelper$1.class...
processing com/unity3d/player/ReflectionHelper$a.class...
processing com/unity3d/player/UnityPlayer.class...
processing com/unity3d/player/UnityPlayer$1.class...
processing com/unity3d/player/UnityPlayer$10.class...
processing com/unity3d/player/UnityPlayer$1$1.class...
processing com/unity3d/player/UnityPlayer$11.class...
processing com/unity3d/player/UnityPlayer$12.class...
processing com/unity3d/player/UnityPlayer$12$1.class...
processing com/unity3d/player/UnityPlayer$13.class...
processing com/unity3d/player/UnityPlayer$14.class...
processing com/unity3d/player/UnityPlayer$15.class...
processing com/unity3d/player/UnityPlayer$16.class...
processing com/unity3d/player/UnityPlayer$17.class...
processing com/unity3d/player/UnityPlayer$18.class...
processing com/unity3d/player/UnityPlayer$19.class...
processing com/unity3d/player/UnityPlayer$2.class...
processing com/unity3d/player/UnityPlayer$20.class...
processing com/unity3d/player/UnityPlayer$21.class...
processing com/unity3d/player/UnityPlayer$3.class...
processing com/unity3d/player/UnityPlayer$4.class...
processing com/unity3d/player/UnityPlayer$5.class...
processing com/unity3d/player/UnityPlayer$6.class...
processing com/unity3d/player/UnityPlayer$7.class...
processing com/unity3d/player/UnityPlayer$8.class...
processing com/unity3d/player/UnityPlayer$9.class...
processing com/unity3d/player/UnityPlayer$a.class...
processing com/unity3d/player/UnityPlayer$b.class...
processing com/unity3d/player/UnityPlayer$c.class...
processing com/unity3d/player/UnityPlayer$c$1.class...
processing com/unity3d/player/UnityPlayer$d.class...
processing com/unity3d/player/UnityPlayerActivity.class...
processing com/unity3d/player/UnityPlayerNativeActivity.class...
processing com/unity3d/player/UnityPlayerProxyActivity.class...
processing com/unity3d/player/UnityWebRequest.class...
processing com/unity3d/player/WWW.class...
processing com/unity3d/player/a.class...
processing com/unity3d/player/a$a.class...
processing com/unity3d/player/b.class...
processing com/unity3d/player/b$1.class...
processing com/unity3d/player/b$2.class...
processing com/unity3d/player/b$3.class...
processing com/unity3d/player/b$4.class...
processing com/unity3d/player/c.class...
processing com/unity3d/player/d.class...
processing com/unity3d/player/e.class...
processing com/unity3d/player/f.class...
processing com/unity3d/player/f$1.class...
processing com/unity3d/player/g.class...
processing com/unity3d/player/h.class...
processing com/unity3d/player/h$1.class...
processing com/unity3d/player/h$2.class...
processing com/unity3d/player/h$3.class...
processing com/unity3d/player/i.class...
processing com/unity3d/player/i$1.class...
processing com/unity3d/player/i$a.class...
processing com/unity3d/player/j.class...
processing com/unity3d/player/k.class...
processing com/unity3d/player/l.class...
processing com/unity3d/player/l$a.class...
processing com/unity3d/player/m.class...
processing com/unity3d/player/m$a.class...
processing com/unity3d/player/m$b.class...
processing org/fmod/FMODAudioDevice.class...
processing org/fmod/a.class...
processing binclasses.comexamplecykmyapplication1R.class...
processing binclasses.comexamplecykmyapplication1R$attr.class...
processing binclasses.comexamplecykmyapplication1R$drawable.class...
processing binclasses.comexamplecykmyapplication1R$id.class...
processing binclasses.comexamplecykmyapplication1R$layout.class...
processing binclasses.comexamplecykmyapplication1R$mipmap.class...
processing binclasses.comexamplecykmyapplication1R$string.class...
processing binclasses.comexamplecykmyapplication1R$style.class...
processing archive binclasses.jar...
processing bitter/jnibridge/JNIBridge.class...
processing bitter/jnibridge/JNIBridge$a.class...
processing com/unity3d/player/NativeLoader.class...
processing com/unity3d/player/ReflectionHelper.class...
processing com/unity3d/player/ReflectionHelper$1.class...
processing com/unity3d/player/ReflectionHelper$a.class...
processing com/unity3d/player/UnityPlayer.class...
processing com/unity3d/player/UnityPlayer$1.class...
processing com/unity3d/player/UnityPlayer$10.class...
processing com/unity3d/player/UnityPlayer$1$1.class...
processing com/unity3d/player/UnityPlayer$11.class...
processing com/unity3d/player/UnityPlayer$12.class...
processing com/unity3d/player/UnityPlayer$12$1.class...
processing com/unity3d/player/UnityPlayer$13.class...
processing com/unity3d/player/UnityPlayer$14.class...
processing com/unity3d/player/UnityPlayer$15.class...
processing com/unity3d/player/UnityPlayer$16.class...
processing com/unity3d/player/UnityPlayer$17.class...
processing com/unity3d/player/UnityPlayer$18.class...
processing com/unity3d/player/UnityPlayer$19.class...
processing com/unity3d/player/UnityPlayer$2.class...
processing com/unity3d/player/UnityPlayer$20.class...
processing com/unity3d/player/UnityPlayer$21.class...
processing com/unity3d/player/UnityPlayer$3.class...
processing com/unity3d/player/UnityPlayer$4.class...
processing com/unity3d/player/UnityPlayer$5.class...
processing com/unity3d/player/UnityPlayer$6.class...
processing com/unity3d/player/UnityPlayer$7.class...
processing com/unity3d/player/UnityPlayer$8.class...
processing com/unity3d/player/UnityPlayer$9.class...
processing com/unity3d/player/UnityPlayer$a.class...
processing com/unity3d/player/UnityPlayer$b.class...
processing com/unity3d/player/UnityPlayer$c.class...
processing com/unity3d/player/UnityPlayer$c$1.class...
processing com/unity3d/player/UnityPlayer$d.class...
processing com/unity3d/player/UnityPlayerActivity.class...
processing com/unity3d/player/UnityPlayerNativeActivity.class...
processing com/unity3d/player/UnityPlayerProxyActivity.class...
processing com/unity3d/player/UnityWebRequest.class...
processing com/unity3d/player/WWW.class...
processing com/unity3d/player/a.class...
processing com/unity3d/player/a$a.class...
processing com/unity3d/player/b.class...
processing com/unity3d/player/b$1.class...
processing com/unity3d/player/b$2.class...
processing com/unity3d/player/b$3.class...
processing com/unity3d/player/b$4.class...
processing com/unity3d/player/c.class...
processing com/unity3d/player/d.class...
processing com/unity3d/player/e.class...
processing com/unity3d/player/f.class...
processing com/unity3d/player/f$1.class...
processing com/unity3d/player/g.class...
processing com/unity3d/player/h.class...
processing com/unity3d/player/h$1.class...
processing com/unity3d/player/h$2.class...
processing com/unity3d/player/h$3.class...
processing com/unity3d/player/i.class...
processing com/unity3d/player/i$1.class...
processing com/unity3d/player/i$a.class...
processing com/unity3d/player/j.class...
processing com/unity3d/player/k.class...
processing com/unity3d/player/l.class...
processing com/unity3d/player/l$a.class...
processing com/unity3d/player/m.class...
processing com/unity3d/player/m$a.class...
processing com/unity3d/player/m$b.class...
processing org/fmod/FMODAudioDevice.class...
processing org/fmod/a.class...
]
exit code: 2
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.HostView:OnGUI()
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解决方法：
更改libs文件名，如unitylibs，classes.jar不用改名或者取任意名称即可，如图

2.AndroidManifest.xml配置

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.cyk.myapplication1">

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@android:style/Theme.NoTitleBar">
<activity android:name=".UnityActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<!--固定写法-->
<meta-data android:name="unityplayer.UnityActivity"
android:value="true"/>
</activity>
</application>

</manifest>
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3.Android Activity设置

package com.example.cyk.myapplication1;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;

import com.unity3d.player.UnityPlayer;
import com.unity3d.player.UnityPlayerActivity;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class UnityActivity extends UnityPlayerActivity {

private LinearLayout mLlUnityContainer;
private Button mBtnRotate;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_unity);
initView();
}

private void initView() {
mLlUnityContainer = (LinearLayout) findViewById(R.id.ll_unity_container);
mBtnRotate = (Button) findViewById(R.id.btn_rotate);

//将Unity的View添加到布局里
View scene = mUnityPlayer.getView();
mLlUnityContainer.addView(scene);

mBtnRotate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//向Unity的Cube对象上的脚本里的RotateCube方法发送消息
//第三个参数是传递的消息
UnityPlayer.UnitySendMessage("Cube", "RotateCube", "80");
}
});
}

public void getNowTime(String temp) {
long time = System.currentTimeMillis();
String strTime = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss", Locale.CHINESE).format(new Date(time));
Toast.makeText(this,temp+" haha "+strTime,Toast.LENGTH_LONG).show();
}
}
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4.将aar及AndroidManifest.xml文件导入到unity项目中
打开unity项目文件夹，目录不存在则创建相应文件夹，AssetsPluginsAndroid，导入后效果如下

5.创建C#Script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RotateTest : MonoBehaviour
{

// Use this for initialization
void Start()
{
Debug.Log("RotateTest Start");
}

// Update is called once per frame
void Update()
{
//Debug.Log("RotateTest Update");
}

void RotateCube(string angle)
{
Debug.Log("RotateTest RotateCube angle:" + angle);
this.gameObject.transform.Rotate(Vector3.up, float.Parse(angle));
}

public void unityBtnClick()
{
Debug.Log("RotateTest unityBtnClick");
//通过报名获取java class (固定写法，好坑，不要以为是自已的Android包名)
AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");

//获取当前的activity （固定写法，不要以为是自己定义的Activity名称。。。）
AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity");

//调用activity里面的方法，传入方法名和参数
jo.Call("getNowTime", "Get Android Time");
}

}
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版权声明：本文为CSDN博主「德星」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/kongxingxing/article/details/81119831