UI异形适配

CanvasHelper resizes a RectTransform to iPhone X's safe area - Unity Forum

UI适配可以拿手机的安全区域对Canvas进行等比修改

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
[RequireComponent(typeof(Canvas))]
public class CanvasHelper : MonoBehaviour
{
    private static List<CanvasHelper> helpers = new List<CanvasHelper>();

    public static UnityEvent OnResolutionOrOrientationChanged = new UnityEvent();

    private static bool screenChangeVarsInitialized = false;
    private static ScreenOrientation lastOrientation = ScreenOrientation.Landscape;
    private static Vector2 lastResolution = Vector2.zero;
    private static Rect lastSafeArea = Rect.zero;

    private Canvas canvas;
    private RectTransform rectTransform;
    private RectTransform safeAreaTransform;

    void Awake()
    {
        if (!helpers.Contains(this))
            helpers.Add(this);

        canvas = GetComponent<Canvas>();
        rectTransform = GetComponent<RectTransform>();

        safeAreaTransform = transform.Find("SafeArea") as RectTransform;

        if (!screenChangeVarsInitialized)
        {
            lastOrientation = Screen.orientation;
            lastResolution.x = Screen.width;
            lastResolution.y = Screen.height;
            lastSafeArea = Screen.safeArea;
            screenChangeVarsInitialized = true;
        }

        ApplySafeArea();
    }

    void Update()
    {
        if (helpers[0] != this)
            return;

        if (Application.isMobilePlatform && Screen.orientation != lastOrientation)
            OrientationChanged();

        if (Screen.safeArea != lastSafeArea)
            SafeAreaChanged();

        if (Screen.width != lastResolution.x || Screen.height != lastResolution.y)
            ResolutionChanged();
    }

    void ApplySafeArea()
    {
        if (safeAreaTransform == null)
            return;

        var safeArea = Screen.safeArea;

        var anchorMin = safeArea.position;
        var anchorMax = safeArea.position + safeArea.size;
        Debug.Log(canvas.pixelRect);
        anchorMin.x /= canvas.pixelRect.width;
        anchorMin.y /= canvas.pixelRect.height;
        anchorMax.x /= canvas.pixelRect.width;
        anchorMax.y /= canvas.pixelRect.height;

        safeAreaTransform.anchorMin = anchorMin;
        safeAreaTransform.anchorMax = anchorMax;
    }

    void OnDestroy()
    {
        if (helpers != null && helpers.Contains(this))
            helpers.Remove(this);
    }

    private static void OrientationChanged()
    {
        //Debug.Log("Orientation changed from " + lastOrientation + " to " + Screen.orientation + " at " + Time.time);

        lastOrientation = Screen.orientation;
        lastResolution.x = Screen.width;
        lastResolution.y = Screen.height;

        OnResolutionOrOrientationChanged.Invoke();
    }

    private static void ResolutionChanged()
    {
        //Debug.Log("Resolution changed from " + lastResolution + " to (" + Screen.width + ", " + Screen.height + ") at " + Time.time);

        lastResolution.x = Screen.width;
        lastResolution.y = Screen.height;

        OnResolutionOrOrientationChanged.Invoke();
    }

    private static void SafeAreaChanged()
    {
        // Debug.Log("Safe Area changed from " + lastSafeArea + " to " + Screen.safeArea.size + " at " + Time.time);

        lastSafeArea = Screen.safeArea;

        for (int i = 0; i < helpers.Count; i++)
        {
            helpers[i].ApplySafeArea();
        }
    }
}

可以在Unity的插件下载里面下载预览插件Device Simulator，能模拟在手机上上到的效果，这里建议下载2.2.4版本，最新的3.0.3版本没看到预览设置。