Android端: package com.myc.sdkbase; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import com.unity3d.player.UnityPlayer; import com.unity3d.player.UnityPlayerActivity; public class MainActivity extends UnityPlayerActivity { private static MainActivity instance; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setContentView(R.layout.activity_main); instance = this; } @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; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } public int Sum(int x, int y) { return x + y; } public int Max(int x, int y) { return Math.max(x, y); } public static MainActivity GetInstance() { return instance; } public void CallUnityFun(String str) { String receiveObj = "Main Camera"; String receiveMethod = "Receive"; UnityPlayer.UnitySendMessage(receiveObj, receiveMethod, str + " Android Call Unity."); } }
Unity端： using UnityEngine; using UnityEngine.UI; namespace SDKBase { public class MessageHandler : MonoBehaviour { private AndroidJavaClass m_jc; private AndroidJavaObject m_jo; [SerializeField] private Text m_text; [SerializeField] private Text m_textReceive; // Start is called before the first frame update void Start() { m_jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer"); m_jo = m_jc.GetStatic<AndroidJavaObject>("currentActivity"); } public void OnClickSum() { AndroidJavaClass jc = new AndroidJavaClass("com.myc.sdkbase.MainActivity"); AndroidJavaObject jo = jc.CallStatic<AndroidJavaObject>("GetInstance"); m_text.text = jo.Call<int>("Sum", 5, 3).ToString(); } public void OnClickMax() { AndroidJavaClass jc = new AndroidJavaClass("com.myc.sdkbase.MainActivity"); AndroidJavaObject jo = jc.CallStatic<AndroidJavaObject>("GetInstance"); m_text.text = jo.Call<int>("Max", 5, 3).ToString(); } public void OnClickCall1() { m_jo.Call("CallUnityFun", "Test1"); } public void OnClickCall2() { AndroidJavaClass jc = new AndroidJavaClass("com.myc.sdkbase.MainActivity"); AndroidJavaObject jo = jc.CallStatic<AndroidJavaObject>("GetInstance"); jo.Call("CallUnityFun", "Test2"); } public void Receive(string str) { m_textReceive.text = str; } } }
参考链接： https://www.cnblogs.com/msxh/p/7220741.html
后来在看宣雨松博客时看到Unity调用Android部分可以写成： using (AndroidJavaClass jc = new AndroidJavaClass("com.myc.sdkbase.MainActivity")) { using (AndroidJavaObject jo = jc.CallStatic<AndroidJavaObject>("GetInstance")) { m_text.text = jo.Call<int>("Sum", 5, 3).ToString(); } }
了解到using后面接实现了 IDisposable 的对象可以在码块结束后自动Dispose。