记录Unity与Java调用

Unity端

private AndroidJavaObject _testSDK;
private AndroidJavaObject _unityPlayer;

void Start()
{
//#if UNITY_ANDROID && !UNITY_EDITOR
        var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
        _unityPlayer = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
        var jc = new AndroidJavaClass("com.xxx.testlib.TestModuleSDK");
        _testSDK = jc.CallStatic<AndroidJavaObject>("getInstance", _unityPlayer);
//#endif
}

public void InitCallback()
{
    string result = _testSDK.Call<string>("test");
}

Java端

public class TestModuleSDK {

    public static TestModuleSDK sInstance;

    public static TestModuleSDK getInstance(Context context) {
        if (sInstance == null) {
            synchronized (TestModuleSDK.class) {
                if (sInstance == null) {
                    sInstance = new TestModuleSDK(context);
                }
            }
        }
        return sInstance;
    }

    private TestModuleSDK(Context context) {
        UnityPlayer.currentActivity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                UnityPlayer.UnitySendMessage("XXXSDK", "InitCallback", "");
            }
        });
    }

    public String test() {
        return "测试成功";
    }
}