PlayerConnectionGUIUtility.GetConnectionState

参数

返回值

IConnectionState 返回与 Player 的连接的未序列化状态，在 PlayerConnectionGUI.ConnectionTargetSelectionDropdown 或 PlayerConnectionGUILayout.ConnectionTargetSelectionDropdown 中使用。返回的连接状态对象包含有关 Player 连接到哪个目标以及哪些目标可用的信息。

描述

此方法生成一个状态跟踪对象，用于建立和显示编辑器到 Player 的连接。

此状态和相应的 GUI 方法（PlayerConnectionGUI.ConnectionTargetSelectionDropdown 和 PlayerConnectionGUILayout.ConnectionTargetSelectionDropdown）应该在 EditorWindow 中使用。提供的 Editor Window 用于：1. 在连接时显示覆盖层 2. 在建立连接后重新绘制窗口 3. 在使用相同连接类型的其他窗口建立连接时，通过 connectedCallback 接收回调调用。从技术上讲，可能可以将 parentWindow 作为 null 并将其用于 EditorWindow 之外，但我们既不推荐也不打算支持这种用例。

还要记住，接收到的状态未序列化，需要进行处置。推荐的使用模式是在 EditorWindow 的 OnEnable 中获取状态，并在 OnDisable 中对其进行处置。

例如，如果连接是通过自动建立与 Player 的探查器连接或回退到与编辑器的连接而建立的，则不会触发 connectedCallback。相反，它仅响应用户主动选择目标，并等待该连接建立。如果连接类型是在编辑器窗口之间共享的，则当用户在不同的 EditorWindow 中选择它时，也会触发它。

返回的状态知道当前连接了哪个目标以及哪些目标可用。

using UnityEngine;
using UnityEngine.Profiling;
using UnityEditor;
using UnityEngine.Networking.PlayerConnection;
using UnityEditor.Networking.PlayerConnection;

public class MyWindow : EditorWindow
{
    // The state can survive for the life time of the EditorWindow so it's best to store it here and just renew/dispose of it in OnEnable and OnDisable, rather than fetching repeatedly it in OnGUI.
    IConnectionState attachProfilerState;

    [MenuItem("Window/My Window")]
    static void Init()
    {
        MyWindow window = (MyWindow)GetWindow(typeof(MyWindow));
        window.Show();
    }

    private void OnEnable()
    {
        // The state of the connection is not getting serialized and needs to be disposed
        // Therefore, it's recommended to fetch it in OnEnable and call dispose on it in OnDisable
        attachProfilerState = PlayerConnectionGUIUtility.GetConnectionState(this, OnConnected);
    }

    private void OnConnected(string player)
    {
        Debug.Log(string.Format("MyWindow connected to {0}", player));
    }

    private void OnGUI()
    {
        // Draw a toolbar across the top of the window and draw the drop-down in the toolbar drop-down style too
        EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
        PlayerConnectionGUILayout.ConnectionTargetSelectionDropdown(attachProfilerState, EditorStyles.toolbarDropDown);

        switch (attachProfilerState.connectedToTarget)
        {
            case ConnectionTarget.None:
                //This case can never happen within the Editor, since the Editor will always fall back onto a connection to itself.
                break;
            case ConnectionTarget.Player:
                Profiler.enabled = GUILayout.Toggle(Profiler.enabled, string.Format("Profile the attached Player ({0})", attachProfilerState.connectionName), EditorStyles.toolbarButton);
                break;
            case ConnectionTarget.Editor:
                // The name of the Editor or the PlayMode Player would be "Editor" so adding the connectionName here would not add anything.
                Profiler.enabled = GUILayout.Toggle(Profiler.enabled, "Profile the Player in the Editor", EditorStyles.toolbarButton);
                break;
            default:
                break;
        }
        EditorGUILayout.EndHorizontal();
    }

    private void OnDisable()
    {
        // Remember to always dispose the state!
        attachProfilerState.Dispose();
    }
}