一.Android导出jar或aar包到Unity
当在Android Studio开发时，将unity的jar包导入后，可自定义一个类继承自com.unity3d.player.UnityPlayerActivityimport com.unity3d.player.UnityPlayerActivity;public class MainActivity extends UnityPlayerActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);}}
而UnityPlayerActivity代码如下：
public class UnityPlayerActivity extends Activity {protected UnityPlayer mUnityPlayer;public UnityPlayerActivity() {}protected void onCreate(Bundle var1) {this.requestWindowFeature(1);super.onCreate(var1);this.mUnityPlayer = new UnityPlayer(this);this.setContentView(this.mUnityPlayer);this.mUnityPlayer.requestFocus();}...}
因为子类创建时不会创建父类对象，所以这个this是子类对象的引用。
UnityPlayer的代码如下：
public UnityPlayer(Context var1) {super(var1);if (var1 instanceof Activity) {currentActivity = (Activity)var1;this.c = currentActivity.getRequestedOrientation();}...}
此时的currentActivity就是MainActivity对象的引用
所以在Unity中获取的currentActivity就是MainActivity，代码如下:
AndroidJavaClass javaClass3 = new AndroidJavaClass("com.unity3d.player.UnityPlayer");AndroidJavaObject javaObject = javaClass.GetStatic<AndroidJavaObject>("currentActivity");
在Android中同样可以获取currentActivity
public static Activity GetActivity(){Activity activity = null;try {Class<?> classtype = Class.forName("com.unity3d.player.UnityPlayer");activity = (Activity)classtype.getDeclaredField("currentActivity").get(classtype);}catch (Exception e){}return activity;}
此时AndroidManifest.xml中的入口Activity
此时Activity的name可以为:
name = “包名.MainActivity”
或
name = “.MainActivity” (与上面表示的相同)
另：
当改为name = “com.unity3d.player.UnityPlayerActivity” 也运行正常
<activity android:name="包名.MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter><meta-dataandroid:name="unityplayer.UnityActivity"android:value="true" /></activity>
二.Unity导出project到Android进行二次开发
Andrioid平台Gradle模式 勾选Export Project
该操作会自动生成一个 包名.UnityPlayerActivity,其路径为:
xxx\src\main\java\com\xxx\xxx\UnityPlayerActivity.java
代码如下:
package com.xxx.xxx;public class UnityPlayerActivity 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);mUnityPlayer = new UnityPlayer(this);setContentView(mUnityPlayer);mUnityPlayer.requestFocus();}...}
若原本Android/plugins下没有AndroidMainfest.xml,则使用的是默认的AndroidMainfest.xml,且入口Activity默认为:
name=“com.unity3d.player.UnityPlayerActivity”
<activity android:name="com.unity3d.player.UnityPlayerActivity"android:label="@string/app_name"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter><meta-data android:name="unityplayer.UnityActivity" android:value="true" /></activity>
导出project生成的AndroidMainfest.xml中：
name=“包名.UnityPlayerActivity”
