用unity写一个安卓app的悬浮窗

在 Unity 中创建安卓悬浮窗需要使用 Unity 的 Android 库和一些 Java 代码。

首先，在 Unity 中添加 Android 库。在 Unity 中，打开“Edit > Project Settings > Player”，然后选择“Other Settings”选项卡。在“Configuration”下，将“Scripting Runtime Version”设置为“.NET 4.x Equivalent”。然后，在“Configuration”下，将“Api Compatibility Level”设置为“.NET 4.x”。

接下来，需要创建一个 Java 类来控制悬浮窗的行为。将以下代码保存为“FloatingWindow.java”文件：

import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;

public class FloatingWindow extends Service {
    private WindowManager windowManager;
    private ImageView floatingWindow;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();

        floatingWindow = new ImageView(this);
        floatingWindow.setImageResource(R.drawable.floating_window_image);

        windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

        final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.TYPE_PHONE,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            PixelFormat.TRANSLUCENT);

        params.gravity = Gravity.TOP | Gravity.LEFT;
        params.x = 0;
        params.y = 100;

        floatingWindow.setOnTouchListener(new View.OnTouchListener() {
            private int initialX;
            private int initialY;
            private float initialTouchX;
            private float initialTouchY;

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        initialX = params.x;
                        initialY = params.y;
                        initialTouchX = event.getRawX();
                        initialTouchY = event.getRawY();
                        return true;
                    case MotionEvent.ACTION_UP:
                        return true;