AndroidStudio给Unity打jar包

环境：

AndroidStudio2.0

Unity4.68

AS打jar包

新建空工程

删除无用的MainActivity等。

新建Module

Module选择Android Library，起名为unitylib

向Module中引入Unity的classes.jar

不同版本unity   classes.jar的位置

...........\Unity468\Editor\Data\PlaybackEngines\androidplayer\release\bin

...........\Unity53\Editor\Data\PlaybackEngines\AndroidPlayer\Variations\mono\Release\Classes

把unity classes.jar直接放入新建module文件下的libs中

把classes.jar引入，具体过程为

选择unitylib，点击+号，确定引入了classes.jar后点击ok保存，退出Project Structure界面

想删除新建的module，需要在ProjectStructure中先点-号，然后回到把unitylib delete调，然后在回到工程中把unitylib整个delete掉

打包内容填写

这里要打包一个MainActivity，所以在module中新建一个MainActivity.java

MainActivity内容为

package com.n.unitylib;

import android.app.Activity;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.Window;
import android.view.WindowManager;

import com.unity3d.player.UnityPlayer;

public class MainActivity extends Activity {

    protected UnityPlayer mUnityPlayer;		// don't change the name of this variable; referenced from native code

    // Setup activity layout
    @Override protected void onCreate (Bundle savedInstanceState)
    {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);

        getWindow().takeSurface(null);
        getWindow().setFormat(PixelFormat.RGBX_8888); // <--- This makes xperia play happy

        mUnityPlayer = new UnityPlayer(this);
        if (mUnityPlayer.getSettings ().getBoolean ("hide_status_bar", true))
            getWindow ().setFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN,
                    WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(mUnityPlayer);
        mUnityPlayer.requestFocus();
    }

    // Quit Unity
    @Override protected void onDestroy ()
    {
        mUnityPlayer.quit();
        super.onDestroy();
    }

    // Pause Unity
    @Override protected void onPause()
    {
        super.onPause();
        mUnityPlayer.pause();
    }

    // Resume Unity
    @Override protected void onResume()
    {
        super.onResume();
        mUnityPlayer.resume();
    }

    // This ensures the layout will be correct.
    @Override public void onConfigurationChanged(Configuration newConfig)
    {
        super.onConfigurationChanged(newConfig);
        mUnityPlayer.configurationChanged(newConfig);
    }

    // Notify Unity of the focus change.
    @Override public void onWindowFocusChanged(boolean hasFocus)
    {
        super.onWindowFocusChanged(hasFocus);
        mUnityPlayer.windowFocusChanged(hasFocus);
    }

    // For some reason the multiple keyevent type is not supported by the ndk.
    // Force event injection by overriding dispatchKeyEvent().
    @Override public boolean dispatchKeyEvent(KeyEvent event)
    {
        if (event.getAction() == KeyEvent.ACTION_MULTIPLE)
            return mUnityPlayer.injectEvent(event);
        return super.dispatchKeyEvent(event);
    }

    // Pass any events not handled by (unfocused) views straight to UnityPlayer
    @Override public boolean onKeyUp(int keyCode, KeyEvent event)     { return mUnityPlayer.injectEvent(event); }
    @Override public boolean onKeyDown(int keyCode, KeyEvent event)   { return mUnityPlayer.injectEvent(event); }
    @Override public boolean onTouchEvent(MotionEvent event)          { return mUnityPlayer.injectEvent(event); }
    /*API12*/ public boolean onGenericMotionEvent(MotionEvent event)  { return mUnityPlayer.injectEvent(event); }

    public static void Test()
    {
        Log.e("nafio","success!");
    }
}

AndroidManifest.xml内容为

<?xml version="1.0" encoding="utf-8"?>
<manifest
    xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.n.unitylib"
    android:installLocation="preferExternal"
    android:versionCode="1"
    android:versionName="1.0">
    <supports-screens
        android:smallScreens="true"
        android:normalScreens="true"
        android:largeScreens="true"
        android:xlargeScreens="true"
        android:anyDensity="true"/>

    <application
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
        android:label="@string/app_name"
        >
        <activity android:name=".MainActivity"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
            </intent-filter>
            <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
            <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false" />
        </activity>
    </application>
</manifest>

配置gradle打包参数

在module的build.gradle最后添加

task makeJar(type: Copy) {
    delete 'build/libs/unitylib.jar'
    from('build/intermediates/bundles/release/')
    into('build/libs/')
    include('classes.jar')
    rename('classes.jar', 'unitylib.jar')
}

makeJar.dependsOn(build)

打jar包

然后在Terminal中输入gradlew makejar

第一次运行Androidstudio可能会更新gradle，20-30分钟，更新完会自动打jar包

jar包位置在

android调试module

module用来打包，如果要调试

把module中的build.gradle中

apply plugin: 'com.android.library'

改为

apply plugin: 'com.android.application'

然后同步下gradle module就是普通工程了

Unity调用

新建空工程

在Assets下新建Plugins/Android/

把打出的unitylib.jar和对应的AndroidManifest.xml（这个从哪copy都可以，单独写都可以，只要内容对就行）

新建脚本，随便挂一个节点上

using UnityEngine;
using System.Collections;

public class TestAS : MonoBehaviour {
	private AndroidJavaObject _java;
	public AndroidJavaObject Java
	{
		get
		{
			if (_java == null)
			{
				var javaClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
				_java = javaClass.GetStatic<AndroidJavaObject>("currentActivity");
			}
			return _java;
		}
	}
	// Use this for initialization
	void Start () {
		Debug.Log("nafio-----START");
		Java.CallStatic("Test");
		Debug.Log("nafio-----END");
	}

	// Update is called once per frame
	void Update () {

	}
}

打包时注意一点，包名保持跟jar包中的包名一致（如果jar包中包含的不是主Acticity，而是其他java类，应该不一致也可以)

打apk出来，运行输出  android中写的log  

 Log.e("nafio","success!");

遇到问题记录

Lint found errors in the project; aborting build

解决办法

文件build.gradle，添加如下信息

android {
   lintOptions {
       abortOnError false
   }
}