为统一3D创建本机Flashlight Android Java插件 [英] Create a native Flashlight Android Java plugin for unity 3D

问题描述

我有一个问题，我不知道如何从Unity访问我的Java插件.

I have an issue, I don't know how to access to my java plugin from Unity.

这是Java代码:

package fr.vincentmazet.utilslibrary;

import android.content.Context;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraManager;
import com.unity3d.player.UnityPlayerActivity;


public class FlashLight extends UnityPlayerActivity {
private CameraManager camManager;
private Context context;

public void FlashLight(Context context){
    this.camManager = (CameraManager)    context.getSystemService(context.CAMERA_SERVICE);
    this.context = context;
}

public boolean enableFlash(){
        try {
            camManager.setTorchMode("0", true);
        } catch (CameraAccessException e) {
            e.printStackTrace();
    }
    return true;
}

public boolean stopFlash(){
        try {
            camManager.setTorchMode("0", false);
        } catch (CameraAccessException e) {
            e.printStackTrace();
    }
    return true;
}
}

这是我的c#函数:

public bool startFlash(){
    if (Application.platform == RuntimePlatform.Android) {
        using (var javaUnityPlayer = new AndroidJavaClass     ("com.unity3d.player.UnityPlayer")) {

            using (var currentActivity = javaUnityPlayer.GetStatic<AndroidJavaObject> ("currentActivity")) {

                using (var androidPlugin = new AndroidJavaObject ("fr.vincentmazet.utilslibrary.FlashLight", currentActivity)) {

                    return androidPlugin.Call<bool> ("enableFlash");
                }
            }
        }
    }
    return false;
}

但是当我输入时失败了:

But it failed when I enter in :

var androidPlugin = new AndroidJavaObject  ("fr.vincentmazet.utilslibrary.FlashLight", currentActivity)

我不知道如何调试，可以从我的android访问堆栈跟踪.

And I don't know how to debug, access to the stack-trace from my android.

任何想法都很感激，谢谢你.

Any ideas is appreciated thank's you by advance.

推荐答案

我不知道如何调试，可以从我的计算机访问堆栈跟踪 android.

And I don't know how to debug, access to the stack-trace from my android.

必须自己调试Android插件.您可以使用 Unity/C#中的Debug.Log和 Android/Java 中的Log.V来实现.

Debugging your Android plugin yourself is a must. You can do this with Debug.Log from Unity/C# and Log.V from Android/Java side.

使用 Android Studio 中的 Android监视器查看来自Unity的日志以及异常日志.

Use Android Monitor from Android Studio to view the Logs and also Exception Log from Unity.

我不知道如何从Unity访问我的Java插件

I don't know how to access to my java plugin from Unity

您需要将Context的实例从Unity发送到Android插件.您也不必从UnityPlayerActivity开始扩展.这里完全没有必要.

You need to send instance of Context from Unity to the Android Plugin. You also don't have to extend from UnityPlayerActivity. Totally unnecessary here.

权限:

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.FLASHLIGHT"/>
<uses-feature android:name="android.hardware.camera.flash" android:required="false" />

Java:

public class FlashLight{
private CameraManager camManager;
static Context myContext;

// Called From C# to get the Context Instance
public static void receiveContextInstance(Context tempContext) {
        myContext = tempContext;

 this.camManager = (CameraManager)   myContext.getSystemService(context.CAMERA_SERVICE);
    }

public static boolean enableFlash(){
        try {
            camManager.setTorchMode("0", true);
        } catch (CameraAccessException e) {
            e.printStackTrace();
    }
    return true;
}

public static boolean stopFlash(){
        try {
            camManager.setTorchMode("0", false);
        } catch (CameraAccessException e) {
            e.printStackTrace();
    }
    return true;
}
}

C#:

AndroidJavaClass unityClass;
AndroidJavaObject unityActivity;
AndroidJavaObject unityContext;
AndroidJavaClass customClass;

void Start()
{
    //Replace with your full package name
    sendActivityReference("fr.vincentmazet.utilslibrary.FlashLight");

    //Enable Flashlight
    enableFlash();

   //Disable Flashlight
   //stopFlash();
}

void sendActivityReference(string packageName)
{
    unityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    unityActivity = unityClass.GetStatic<AndroidJavaObject>("currentActivity");
    unityContext = unityActivity.Call<AndroidJavaObject>("getApplicationContext");

    customClass = new AndroidJavaClass(packageName);
    customClass.CallStatic("receiveContextInstance", unityContext);
}

bool enableFlash()
{
   return customClass.CallStatic<bool>("enableFlash");
}

bool stopFlash()
{
   return customClass.CallStatic<bool>("stopFlash");
}

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