Unity与Andriod的交互-编程知识

Unity与Andriod的交互

Unity与安卓的信息交互

这次分享的不同于传统的方式AndroidJavaClass("com.unity3d.player.UnityPlayer")
如果是新手的话，请看交互新手教程

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这里讲的是在Unity中调用java代码，或者在unity中传参到java中，在Java代码中运行。

以下是在Java中的代码

public class UnitySdk {private final String TAG = "sdkcall";private static final class MInstanceHolder{static final UnitySdk mInstance = new UnitySdk();}public static UnitySdk getInstance() { return MInstanceHolder.mInstance; }private UnitySdk() {UnityPlayer mPlayer;try {ArrayList<Class<?>> clsList = new ArrayList<Class<?>>();Class<?> cls = UnityPlayer.currentActivity.getClass();clsList.add(cls);cls = cls.getSuperclass();while (cls != null) {clsList.add(cls);cls = cls.getSuperclass();}mPlayer = null;for (Class<?> c : clsList) {Field[] flds = c.getDeclaredFields();for (Field fld : flds) {if (UnityPlayer.class.equals(fld.getType())) {fld.setAccessible(true);mPlayer = (UnityPlayer) fld.get(UnityPlayer.currentActivity);break;}}}OnInit();} catch (Throwable t) {Log.i(TAG, "mPlayer=" + t);return;}Log.i(TAG, "add mPlayer=" + mPlayer);}public Activity activity(){return UnityPlayer.currentActivity;}private void OnInit(){Log.i(TAG, "OnInit: 初始化成功");}public int Getint(){return 520;}public String Getstring(){return "这个是个字符串信息";}public void LogIntPram(int _int){Log.i(TAG, "LogIntPram: "+_int);String str = Integer.toString(_int);Toast.makeText(activity(),str,Toast.LENGTH_LONG).show();}public void LogStringPram(String _str){Log.i(TAG, "LogStringPram: "+_str);Toast.makeText(activity(),_str,Toast.LENGTH_LONG*2).show();}
}

构建一个UnitySdk，方便在Unity中调用，而不是使用Unity自带的UnityPlayer类，在构造函数函数中，调用com.unity3d.player.UnityPlayer。将UnitySdk至为单例类。可在函数中对其他的一些方法，或自定义方法调用。
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Unity中设置

将Android studio中打好的jar包，加载到Unity中，路径为：Plugins/Android/libs
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在Unity中，将调用java的方法统一管理到Sdkmgr中。

public class Sdkmgr : MonoBehaviour
{private static AndroidJavaObject mainObject;private static Sdkmgr instance = null;public static Sdkmgr Instance{get{if (instance == null){instance = GameObject.Find("mgr").AddComponent<Sdkmgr>();}return instance;}}private void Awake(){
#if !UNITY_EDITOR && UNITY_ANDROIDDebug.Log("调用Awake");var mainClass = new AndroidJavaClass("com.wzt.sdkcall.UnitySdk");mainObject = mainClass.CallStatic<AndroidJavaObject>("getInstance");
#endif}public int GetInt(){
#if UNITY_EDITORreturn 0;
#elif UNITY_ANDROIDreturn mainObject.Call<int>("Getint");
#endif}public string GetString(){
#if UNITY_EDITORreturn "";
#elif UNITY_ANDROIDreturn mainObject.Call<string>("Getstring");
#endif}public void LogInt(int num){if (mainObject != null){Debug.Log(num);mainObject.Call("LogIntPram", num);}}public void LogString(string str){if (mainObject != null){Debug.Log(str);mainObject.Call("LogStringPram", str);}}
}

在业务逻辑中调用代码：

 void OnbtnIntClick(){txtContent.text = Sdkmgr.Instance.GetInt().ToString();}void OnbtnStrClick(){txtContent.text = Sdkmgr.Instance.GetString();}void OnbtnLogintClick(){Sdkmgr.Instance.LogInt(89);}void OnbtnLogstrClick(){Sdkmgr.Instance.LogString("这是一掉信息的！");}