如何使用 AccessibilityService 在 Android 上执行拖动（基于 X、Y 鼠标坐标）？

Question

我想知道如何基于 X、Y 鼠标坐标在 android 上执行拖动？考虑两个简单的例子，Team Viewer/QuickSupport分别在远程智能手机和Windows Paint的Pen上绘制“密码模式”。

我所能做的就是模拟触摸（使用dispatchGesture()和AccessibilityNodeInfo.ACTION_CLICK）。

我找到了这些相关链接，但不知道它们是否有用：

• 使用 AccessibilityService 在屏幕上滑动
• 示例 1
• 继续手势

下面是我的工作代码，用于将鼠标坐标（在PictureBox控制范围内）发送到远程电话并模拟触摸。

Windows 窗体应用程序：

private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
    foreach (ListViewItem item in lvConnections.SelectedItems)
    {
        // Remote screen resolution
        string[] tokens = item.SubItems[5].Text.Split('x'); // Ex: 1080x1920

        int xClick = (e.X * int.Parse(tokens[0].ToString())) / (pictureBox1.Size.Width);
        int yClick = (e.Y * int.Parse(tokens[1].ToString())) / (pictureBox1.Size.Height);

        Client client = (Client)item.Tag;

        if (e.Button == MouseButtons.Left)
            client.sock.Send(Encoding.UTF8.GetBytes("TOUCH" + xClick + "<|>" + yClick + Environment.NewLine));
    }
}

---

编辑：

我的最后一次尝试是分别使用鼠标坐标（C# Windows 窗体应用程序）和自定义 android 例程（参考上面链接的“滑动屏幕”代码）的“滑动屏幕”：

private Point mdownPoint = new Point();

private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
    foreach (ListViewItem item in lvConnections.SelectedItems)
    {
        // Remote screen resolution
        string[] tokens = item.SubItems[5].Text.Split('x'); // Ex: 1080x1920

        Client client = (Client)item.Tag;

        if (e.Button == MouseButtons.Left)
        {
            xClick = (e.X * int.Parse(tokens[0].ToString())) / (pictureBox1.Size.Width); 
            yClick = (e.Y * int.Parse(tokens[1].ToString())) / (pictureBox1.Size.Height);

            // Saving start position:

            mdownPoint.X = xClick; 
            mdownPoint.Y = yClick; 

            client.sock.Send(Encoding.UTF8.GetBytes("TOUCH" + xClick + "<|>" + yClick + Environment.NewLine));
        }
    }
}

private void PictureBox1_MouseMove(object sender, MouseEventArgs e)
{
    foreach (ListViewItem item in lvConnections.SelectedItems)
    {
        // Remote screen resolution
        string[] tokens = item.SubItems[5].Text.Split('x'); // Ex: 1080x1920

        Client client = (Client)item.Tag;

        if (e.Button == MouseButtons.Left)
        {
            xClick = (e.X * int.Parse(tokens[0].ToString())) / (pictureBox1.Size.Width);
            yClick = (e.Y * int.Parse(tokens[1].ToString())) / (pictureBox1.Size.Height);

            client.sock.Send(Encoding.UTF8.GetBytes("MOUSESWIPESCREEN" + mdownPoint.X + "<|>" + mdownPoint.Y + "<|>" + xClick + "<|>" + yClick + Environment.NewLine));
        }
    }
}

安卓无障碍服务：

public void Swipe(int x1, int y1, int x2, int y2, int time) {

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
    System.out.println(" ======= Swipe =======");

    GestureDescription.Builder gestureBuilder = new GestureDescription.Builder();
    Path path = new Path();
    path.moveTo(x1, y1);
    path.lineTo(x2, y2);

    gestureBuilder.addStroke(new GestureDescription.StrokeDescription(path, 100, time));
    dispatchGesture(gestureBuilder.build(), new GestureResultCallback() {
        @Override
        public void onCompleted(GestureDescription gestureDescription) {
            System.out.println("SWIPE Gesture Completed :D");
            super.onCompleted(gestureDescription);
        }
    }, null);
}

}

产生以下结果（但仍然不能像 TeamViewer 一样绘制“模式密码”）。但是就像下面评论中所说的那样，我认为通过类似的方法，这可能可以使用Continued 手势来实现。欢迎在这方面提出任何建议。

---

编辑2：

当然，解决方案是继续使用之前的Edit 中所说的手势。

• 使用 AccessibilityService 模拟操纵杆运动
• 为什么 continueStroke 功能不起作用

下面是我在这里找到的一个假定的固定代码=>

安卓无障碍服务：

// Simulates an L-shaped drag path: 200 pixels right, then 200 pixels down.
Path path = new Path();
path.moveTo(200,200);
path.lineTo(400,200);

final GestureDescription.StrokeDescription sd = new GestureDescription.StrokeDescription(path, 0, 500, true);

// The starting point of the second path must match
// the ending point of the first path.
Path path2 = new Path();
path2.moveTo(400,200);
path2.lineTo(400,400);

final GestureDescription.StrokeDescription sd2 = sd.continueStroke(path2, 0, 500, false); // 0.5 second

HongBaoService.mService.dispatchGesture(new GestureDescription.Builder().addStroke(sd).build(), new AccessibilityService.GestureResultCallback(){

@Override
public void onCompleted(GestureDescription gestureDescription){
super.onCompleted(gestureDescription);
HongBaoService.mService.dispatchGesture(new GestureDescription.Builder().addStroke(sd2).build(),null,null);
}

@Override
public void onCancelled(GestureDescription gestureDescription){
super.onCancelled(gestureDescription);
}
},null);

然后，我的疑问是：如何为上面的代码正确发送鼠标坐标，以及可以向任何方向拖动的方式？有什么想法？

---

编辑3：

我发现了两个用于执行拖动的例程，但它们使用的是UiAutomation + injectInputEvent()。AFAIK，事件注入仅适用于系统应用程序，如此处和此处所述，我不想要它。

这是找到的例程：

• 公共布尔滑动（int downX，int downY，int upX，int upY，int step，布尔拖动）
• 公共布尔刷卡（点 [] 段，整数段步骤）

然后为了实现我的目标，我认为第二个例程更适合使用（遵循逻辑，不包括事件注入）与Edit 2上显示的代码，并分别发送pictureBox1_MouseDown和pictureBox1_MouseMove（C# Windows 窗体应用程序）的所有点以Point[]动态填充和pictureBox1_MouseUp发送cmd 执行例程并使用此数组填充。如果您对第一个例程有想法，请告诉我：D。

如果在阅读此编辑后您有可能的解决方案，请告诉我答案，同时我将尝试测试这个想法。

Answer 1

以下是基于问题编辑 3 的解决方案示例。

C# Windows Froms 应用程序“ formMain.cs ”：

using System.Net.Sockets;

private List<Point> lstPoints;

private void pictureBox1_MouseDown(object sender, MouseEventArgs e) 
{
    if (e.Button == MouseButtons.Left)
    {
        lstPoints = new List<Point>();
        lstPoints.Add(new Point(e.X, e.Y));
    }
}

private void PictureBox1_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        lstPoints.Add(new Point(e.X, e.Y));
    }
}

private void PictureBox1_MouseUp(object sender, MouseEventArgs e)
{
    lstPoints.Add(new Point(e.X, e.Y));

    StringBuilder sb = new StringBuilder();

    foreach (Point obj in lstPoints)
    {
        sb.Append(Convert.ToString(obj) + ":");
    }

    serverSocket.Send("MDRAWEVENT" + sb.ToString() + Environment.NewLine);
}

android 服务“ SocketBackground.java ”：

import java.net.Socket;

String xline;

while (clientSocket.isConnected()) {

    BufferedReader xreader = new BufferedReader(new InputStreamReader(clientSocket.getInputStream(), StandardCharsets.UTF_8));

    if (xreader.ready()) {

        while ((xline = xreader.readLine()) != null) {
                xline = xline.trim();

            if (xline != null && !xline.trim().isEmpty()) {

                if (xline.contains("MDRAWEVENT")) {

                    String coordinates = xline.replace("MDRAWEVENT", "");
                    String[] tokens = coordinates.split(Pattern.quote(":"));
                    Point[] moviments = new Point[tokens.length];

                    for (int i = 0; i < tokens.length; i++) {
                       String[] coordinates = tokens[i].replace("{", "").replace("}", "").split(",");

                       int x = Integer.parseInt(coordinates[0].split("=")[1]);
                       int y = Integer.parseInt(coordinates[1].split("=")[1]);

                       moviments[i] = new Point(x, y);
                    }

                    MyAccessibilityService.instance.mouseDraw(moviments, 2000);
                }
            }
        }
    }
}

android AccessibilityService“ MyAccessibilityService.java ”：

public void mouseDraw(Point[] segments, int time) {
    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {

        Path path = new Path();
        path.moveTo(segments[0].x, segments[0].y);

        for (int i = 1; i < segments.length; i++) {

            path.lineTo(segments[i].x, segments[i].y);

            GestureDescription.StrokeDescription sd = new GestureDescription.StrokeDescription(path, 0, time);

            dispatchGesture(new GestureDescription.Builder().addStroke(sd).build(), new AccessibilityService.GestureResultCallback() {

                @Override
                public void onCompleted(GestureDescription gestureDescription) {
                    super.onCompleted(gestureDescription);
                }

                @Override
                public void onCancelled(GestureDescription gestureDescription) {
                    super.onCancelled(gestureDescription);
                }
            }, null);
        }
    }
}