获取安卓模拟器截图

最简单的方法当然是使用adb

adb shell screencap -p >screenshot.png

不过有些app会限制adb进行截图，这个时候adb截屏为黑屏

此时有两种方法获取截图

第一使用模拟器自带截图快捷键,获取安卓自带截图键，逍遥模拟器为alt+F3

可模拟键盘输入按键（自行百度）

第二种：使用winapi + 电脑屏幕截图

以下为C#代码，python请自行转换（memu为逍遥模拟器的窗口名称）

先获取模拟器句柄，然后使窗口显示，根据窗口大小和位置截图，然后隐藏窗口

        /// <summary>
        /// 获取模拟器截屏
        /// </summary>
        /// <param name="num"></param>
        public static Bitmap GetEmulatorScreen(int num)
        {
            Process[] procList = Process.GetProcessesByName("memu");
            for (int i = 0; i < 20; i++)
            {
                if (i == num)
                {
                    IntPtr handle = procList[i].MainWindowHandle;
                    ShowWindow(handle, 1);
                    RECT rECT = new RECT();
                    GetWindowRect(handle, ref rECT);
                    Task.Delay(200).Wait();
                    Bitmap bitmap = ScreenShot.GetScreen(rECT.Left, rECT.Top, rECT.Right, rECT.Bottom);
                    ShowWindow(handle, 2);
                    return bitmap;
                }
            }
            return null;
        }
        /// <summary>
        /// 获取窗口位置
        /// </summary>
        /// <param name="hWnd"></param>
        /// <param name="lpRect"></param>
        /// <returns></returns>
        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);

        [StructLayout(LayoutKind.Sequential)]
        private struct RECT
        {
            public int Left;                          //最左坐标
            public int Top;                           //最上坐标
            public int Right;                         //最右坐标
            public int Bottom;                        //最下坐标
        }

        /// <summary>
        /// 显示窗口
        /// 0    关闭窗口
        /// 1    正常大小显示窗口
        /// 2    最小化窗口
        /// 3    最大化窗口
        /// </summary>
        /// <param name="hwnd"></param>
        /// <param name="nCmdShow"></param>
        /// <returns></returns>
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        private static extern int ShowWindow(IntPtr hwnd, int nCmdShow);


        /// <summary>
        /// 获取屏幕
        /// </summary>
        /// <param name="sourceX">左上角x</param>
        /// <param name="sourceY">左上角y</param>
        /// <param name="destinationX">右下角x</param>
        /// <param name="destinationY">右下角y</param>
        /// <returns></returns>
        public static Bitmap GetScreen(int sourceX, int sourceY, int destinationX, int destinationY)
        {
            if(sourceX < 0)
            {
                sourceX = 0;
            }
            if (sourceY < 0)
            {
                sourceY = 0;
            }
            if(destinationY <= sourceY)
            {
                destinationY = sourceY + 10;
            }
            int Width = destinationX - sourceX;
            int Height = destinationY - sourceY;
            Bitmap bmSave = GetScreen();
            Graphics g = Graphics.FromImage(bmSave);//绘制这个图像
            g.CopyFromScreen(sourceX, sourceY, destinationX, destinationY, new Size(Width, Height), CopyPixelOperation.SourceCopy);
            // 2.New一个指定规格的新图片（参数为规格大小）
            Bitmap tempBitmap = new Bitmap(Width, Height);
            //3.将新图片绑定到Graphics
            Graphics graphics = Graphics.FromImage(tempBitmap);
            //4.截图图片（原图，新图片的矩形参数，需要截取的矩形区域参数，像素度量单位）
            graphics.DrawImage(bmSave, new Rectangle(0, 0, Width, Height), new Rectangle(sourceX, sourceY, Width, Height), GraphicsUnit.Pixel);
            return tempBitmap;
        }

        /// <summary>
        /// 获取全屏截图
        /// </summary>
        /// <returns></returns>
        public static Bitmap GetScreen()
        {
            Bitmap bmSave = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
            Graphics g = Graphics.FromImage(bmSave);//绘制这个图像
            g.CopyFromScreen(0, 0, 0, 0, new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height), CopyPixelOperation.SourceCopy);
            return bmSave;
        }