Unity中，将UI限制在手机的安全区内显示
说明可使用Unity的Device Simulator在编辑器模式下测试UI在各种移动设备上的显示效果。
将下面的脚本挂在顶层UI节点（通常应是一个背景Panel）即可。（有时其后面应还有一个Bg，它不用被限制在安全区内显示）
UiAdaptScreenSafeArea.cs
using System.Collections;using System.Collections.Generic;using UnityEngine;public class UiAdaptScreenSafeArea : MonoBehaviour{ private RectTransform _rectTrans; private void Start() { Init(); AdaptAnchorsValue(); } private void Init() { _rectTrans = GetComponent<RectTransform>(); _rectTrans.anchorMin = Vector2.zero; _rectTrans.anchorMax = Vector2.one; _rectTrans.anchoredPosition = Vector2.zero; _rectTrans.sizeDelta = Vector2.zero; } private void AdaptAnchorsValue() { var maxWidth = Display.main.systemWidth; var maxHeight = Display.main.systemHeight; var safeArea = UnityEngine.Screen.safeArea; var anchorMin = safeArea.position; var anchorMax = safeArea.position + safeArea.size; anchorMin.x /= maxWidth; anchorMin.y /= maxHeight; anchorMax.x /= maxWidth; anchorMax.y /= maxHeight; _rectTrans.anchorMin = anchorMin; _rectTrans.anchorMax = anchorMax; }}
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