c# - 如何在软键盘Unity3d中检测 "done"按钮

Question

我在我的 android 应用程序中使用 InputField 来获取一个字符串，当我输入一个字符串时会弹出一个软键盘，但现在我想在用户按下软键盘中的“完成”按钮时调用一个函数，我该怎么做？
Unity3d 4.6.2f1

Answer 1

我发现的最佳方法是将 InputField 子类化。您可以在 bitbucket 上查看 UnityUI 的源代码。在该子类中，您可以访问 protected m_keyboard 字段并检查完成是否已按下且未取消，这将为您提供所需的结果。使用 EventSystem 的“提交”无法正常工作。如果将它集成到 Unity EventSystem 中，效果会更好。

是这样的:提交输入字段.cs

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine.Events;
using System;
using UnityEngine.EventSystems;
using UnityEngine.Serialization;

public class SubmitInputField : InputField
{
    [Serializable]
    public class KeyboardDoneEvent : UnityEvent{}

    [SerializeField]
    private KeyboardDoneEvent m_keyboardDone = new KeyboardDoneEvent ();

    public KeyboardDoneEvent onKeyboardDone {
        get { return m_keyboardDone; }
        set { m_keyboardDone = value; }
    }

    void Update ()
    {
        if (m_Keyboard != null && m_Keyboard.done && !m_Keyboard.wasCanceled) {
            m_keyboardDone.Invoke ();
        }
    }
}

编辑器/SubmitInputFieldEditor.cs

using UnityEngine;
using System.Collections;
using UnityEditor;
using UnityEngine.UI;
using UnityEditor.UI;

[CustomEditor (typeof(SubmitInputField), true)]
[CanEditMultipleObjects]
public class SubmitInputFieldEditor : InputFieldEditor
{
    SerializedProperty m_KeyboardDoneProperty;
    SerializedProperty m_TextComponent;

    protected override void OnEnable ()
    {
        base.OnEnable ();
        m_KeyboardDoneProperty = serializedObject.FindProperty ("m_keyboardDone");
        m_TextComponent = serializedObject.FindProperty ("m_TextComponent");
    }


    public override void OnInspectorGUI ()
    {
        base.OnInspectorGUI ();
        EditorGUI.BeginDisabledGroup (m_TextComponent == null || m_TextComponent.objectReferenceValue == null);

        EditorGUILayout.Space ();

        serializedObject.Update ();
        EditorGUILayout.PropertyField (m_KeyboardDoneProperty);
        serializedObject.ApplyModifiedProperties ();

        EditorGUI.EndDisabledGroup ();
        serializedObject.ApplyModifiedProperties ();
    }
}