dispatchKeyEvent不会在Unity中触发-本机Android插件

Question

I want to trigger onKeyUp or dispatchKeyEvent in Android, and send a message to Unity3D of the keyPress

I made a Java native Plugin with:

public class VolumeKeyClass extends Activity {

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        Log.d("Unity","onKeyUp UP");
        int action = event.getAction();
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
                if (action == KeyEvent.ACTION_DOWN) {
                    Log.d("test", "Volume UP pressed! " + event);
             UnityPlayer.UnitySendMessage("MainController","logStatus","Volume up!!");
                }
                return true;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
                if (action == KeyEvent.ACTION_DOWN) {
                    Log.d("test", "Volume DOWN pressed! " + event);
                    UnityPlayer.UnitySendMessage("MainController","logStatus","Volume Down!");
                }
                return true;
            default:
                return super.dispatchKeyEvent(event);
        }
    }

Already Tested the communication, between Unity and The plugin, is correctly loggin the message, but onKeyUp nor dispatchKeyEvent is not triggering to send the message, nor the Logcat. (target API 15, Ice Cream Sandwich)

Answer 1

You have to use OnKeyListener like this:

   public class VolumeKeyClass extends Activity {

        void InitializeKeyListener ()
        {
           OnKeyListener keyListener = new OnKeyListener() {
        @Override
        public boolean onKeyUp(int keyCode, KeyEvent event) {
            Log.d("Unity","onKeyUp UP");
            int action = event.getAction();
            switch (keyCode) {
                case KeyEvent.KEYCODE_VOLUME_UP:
                    if (action == KeyEvent.ACTION_DOWN) {
                        Log.d("test", "Volume UP pressed! " + event);
                 UnityPlayer.UnitySendMessage("MainController","logStatus","Volume up!!");
                    }
                    return true;
                case KeyEvent.KEYCODE_VOLUME_DOWN:
                    if (action == KeyEvent.ACTION_DOWN) {
                        Log.d("test", "Volume DOWN pressed! " + event);
                        UnityPlayer.UnitySendMessage("MainController","logStatus","Volume Down!");
                    }
                    return true;
                default:
                    return super.dispatchKeyEvent(event);
            }
           };
        }
    }