Unity如何在手机端截图

    public Camera arCamera;
        public void OnScreenShotClick()
    {
        System.DateTime now = System.DateTime.Now;
        string times = now.ToString();
        times = times.Trim();
        times = times.Replace("/", "-");

        string fileName = "ARScreenShot" + times + ".png";
        if (Application.platform==RuntimePlatform.Android)
        {
            #region 带ui的截图
            ////生成截图
            //Texture2D texture = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);
            //texture.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
            //texture.Apply();

            ////保存截图到内存
            //byte[] bytes = texture.EncodeToPNG();
            //string destination = "/sdcard/DCIM/" + "Screenshots";//前面固定写法，打开手机的存储位置，后面是手机默认的截屏文件夹（可以自定义）
            ////判断文件是否存在
            //if (!Directory.Exists(destination))
            //{
            //    Directory.CreateDirectory(destination);
            //}
            //string pathSave = destination + "/" + fileName;
            ////写入内存中的图片
            //File.WriteAllBytes(pathSave, bytes);
            #endregion


            #region 不带ui的截图
            RenderTexture rt = new RenderTexture(Screen.width, Screen.height, 1);
            arCamera.targetTexture = rt;
            arCamera.Render();

            RenderTexture.active = rt;

            //生成截图
            Texture2D texture = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);
            texture.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
            texture.Apply();

            //重置
            arCamera.targetTexture = null;
            RenderTexture.active = null;
            Destroy(rt);

            //保存截图到内存
            byte[] bytes = texture.EncodeToPNG();
            string destination = "/sdcard/DCIM/" + "Screenshots";//前面固定写法，打开手机的存储位置，后面是手机默认的截屏文件夹（可以自定义）
            //判断文件是否存在
            if (!Directory.Exists(destination))
            {
                Directory.CreateDirectory(destination);
            }
            string pathSave = destination + "/" + fileName;
            //写入内存中的图片
            File.WriteAllBytes(pathSave, bytes);

            #endregion

        }
    }

将上面的方法绑定到你ui的截屏按钮即可，有一点需要注意，这个相机是你想要截屏的图像渲染的相机，比如这里我使用了两个相机，分别渲染场景和ui，物体相机的depth为1，所以实例化RenderTexture的时候最后的参数选为1，但是如果你事先像我这个样子给的固定的相机，这个参数影响不大