From 5e0560d75acb73cb133439f4145184507d832531 Mon Sep 17 00:00:00 2001
From: yuqucheng <>
Date: Tue, 7 Jul 2026 10:43:07 +0800
Subject: [PATCH] feat(editor): add iOS icon auto-replace post processor
MIME-Version: 1.0
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解决Unity打包iOS时压缩图标导致模糊的问题，将Assets/Icons/iOS/下的高清图标自动替换到Xcode项目的Assets.car中
---
 Assets/Editor/iOSIconPostProcessor.cs | 100 ++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 Assets/Editor/iOSIconPostProcessor.cs

diff --git a/Assets/Editor/iOSIconPostProcessor.cs b/Assets/Editor/iOSIconPostProcessor.cs
new file mode 100644
index 0000000..0803d6a
--- /dev/null
+++ b/Assets/Editor/iOSIconPostProcessor.cs
@@ -0,0 +1,100 @@
+#if UNITY_IOS
+using UnityEditor;
+using UnityEditor.Callbacks;
+using System.IO;
+using System.Text;
+
+/// <summary>
+/// iOS 出包后自动替换高清 App 图标，解决 Unity 压缩导致图标模糊的问题。
+/// 使用方式：将精确尺寸的 PNG 图标放入 Assets/Icons/iOS/ 目录下，打包时自动生效。
+/// </summary>
+public class iOSIconPostProcessor
+{
+    private const string SOURCE_ICON_DIR = "Assets/Icons/iOS/";
+
+    // 各尺寸图标配置 (idiom, scale, size, 文件名)
+    private static readonly (string idiom, string scale, string size, string file)[] ICON_CONFIGS =
+    {
+        ("iphone", "2x", "20x20",       "icon-20@2x.png"),
+        ("iphone", "3x", "20x20",       "icon-20@3x.png"),
+        ("iphone", "2x", "29x29",       "icon-29@2x.png"),
+        ("iphone", "3x", "29x29",       "icon-29@3x.png"),
+        ("iphone", "2x", "40x40",       "icon-40@2x.png"),
+        ("iphone", "3x", "40x40",       "icon-40@3x.png"),
+        ("iphone", "2x", "60x60",       "icon-60@2x.png"),
+        ("iphone", "3x", "60x60",       "icon-60@3x.png"),
+        ("ipad",   "2x", "20x20",       "icon-20@2x.png"),
+        ("ipad",   "2x", "29x29",       "icon-29@2x.png"),
+        ("ipad",   "2x", "40x40",       "icon-40@2x.png"),
+        ("ipad",   "2x", "76x76",       "icon-76@2x.png"),
+        ("ipad",   "2x", "83.5x83.5",   "icon-83.5@2x.png"),
+        ("ios-marketing", "1x", "1024x1024", "icon-1024.png"),
+    };
+
+    [PostProcessBuild(int.MaxValue)]
+    public static void OnPostProcessBuild(BuildTarget target, string pathToBuiltProject)
+    {
+        if (target != BuildTarget.iOS) return;
+
+        string iconSetPath = Path.Combine(pathToBuiltProject, "Unity-iPhone/Images.xcassets/AppIcon.appiconset");
+        if (!Directory.Exists(iconSetPath))
+        {
+            UnityEngine.Debug.LogWarning($"[iOSIconPostProcessor] 未找到 AppIcon.appiconset 目录: {iconSetPath}");
+            return;
+        }
+
+        int copied = 0;
+        foreach (var cfg in ICON_CONFIGS)
+        {
+            string src = Path.GetFullPath(Path.Combine(SOURCE_ICON_DIR, cfg.file));
+            string dst = Path.Combine(iconSetPath, cfg.file);
+            if (File.Exists(src))
+            {
+                File.Copy(src, dst, overwrite: true);
+                copied++;
+            }
+            else
+            {
+                UnityEngine.Debug.LogWarning($"[iOSIconPostProcessor] 缺少图标文件: {src}");
+            }
+        }
+
+        if (copied > 0)
+        {
+            WriteContentsJson(iconSetPath);
+            UnityEngine.Debug.Log($"[iOSIconPostProcessor] 已替换 {copied} 个 App 图标到 Xcode 项目");
+        }
+    }
+
+    private static void WriteContentsJson(string iconSetPath)
+    {
+        var sb = new StringBuilder();
+        sb.AppendLine("{");
+        sb.AppendLine("  \"images\" : [");
+
+        for (int i = 0; i < ICON_CONFIGS.Length; i++)
+        {
+            var cfg = ICON_CONFIGS[i];
+            sb.Append("    {");
+            sb.Append($"\"idiom\" : \"{cfg.idiom}\", ");
+            sb.Append($"\"scale\" : \"{cfg.scale}\", ");
+            sb.Append($"\"size\" : \"{cfg.size}\"");
+            if (!string.IsNullOrEmpty(cfg.file))
+                sb.Append($", \"filename\" : \"{cfg.file}\"");
+            sb.Append("}");
+            if (i < ICON_CONFIGS.Length - 1) sb.Append(",");
+            sb.AppendLine();
+        }
+
+        sb.AppendLine("  ],");
+        sb.AppendLine("  \"info\" : {");
+        sb.AppendLine("    \"version\" : 1,");
+        sb.AppendLine("    \"author\" : \"xcode\"");
+        sb.AppendLine("  }");
+        sb.AppendLine("}");
+
+        string jsonPath = Path.Combine(iconSetPath, "Contents.json");
+        File.WriteAllText(jsonPath, sb.ToString());
+    }
+}
+#endif