要在扩展Service的类中实现Android ImageView的捏合缩放和旋转功能，你可以使用GestureDetector和ScaleGestureDetector类来处理触摸手势，并将其应用于ImageView。下面是一个示例解决方法的代码：

1. 首先，在你的扩展Service类中定义一个内部类，名为TouchImageView，继承自ImageView，并实现OnTouchListener接口：

import android.content.Context;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;
import android.widget.ImageView;

public class YourService extends Service {
    // ...

    private class TouchImageView extends ImageView implements OnTouchListener {
        private GestureDetector gestureDetector;
        private ScaleGestureDetector scaleGestureDetector;

        public TouchImageView(Context context) {
            super(context);
            setOnTouchListener(this);
            gestureDetector = new GestureDetector(context, new MyGestureListener());
            scaleGestureDetector = new ScaleGestureDetector(context, new MyScaleGestureListener());
        }

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            gestureDetector.onTouchEvent(event);
            scaleGestureDetector.onTouchEvent(event);
            return true;
        }

        private class MyGestureListener extends GestureDetector.SimpleOnGestureListener {
            @Override
            public boolean onDoubleTap(MotionEvent e) {
                // 处理双击事件
                return true;
            }

            @Override
            public boolean onSingleTapConfirmed(MotionEvent e) {
                // 处理单击事件
                return true;
            }

            @Override
            public void onLongPress(MotionEvent e) {
                // 处理长按事件
            }

            // 可以根据需要重写其他手势事件的回调方法
        }

        private class MyScaleGestureListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
            @Override
            public boolean onScale(ScaleGestureDetector detector) {
                // 处理缩放事件
                return true;
            }

            @Override
            public boolean onScaleBegin(ScaleGestureDetector detector) {
                // 缩放开始时的处理
                return true;
            }

            @Override
            public void onScaleEnd(ScaleGestureDetector detector) {
                // 缩放结束时的处理
            }
        }
    }

    // ...
}

2. 接下来，你可以在你的Service类中使用TouchImageView替代普通的ImageView来显示图像：

public class YourService extends Service {
    // ...

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

        // 创建TouchImageView实例，并设置要显示的图像
        TouchImageView touchImageView = new TouchImageView(this);
        touchImageView.setImageResource(R.drawable.your_image);

        // 将TouchImageView添加到WindowManager中显示
        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.TRANSLUCENT);
        WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
        windowManager.addView(touchImageView, params);
    }

    // ...
}

请根据你的具体需求和实际情况进行修改和适配。