fix auto generate icon's error & platform protect

Assets/Stickers/Editor/AssetCatalog.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -706,3 +707,4 @@ public override void Write()
     }
 
 } // namespace UnityEditor.iOS.Xcode
+#endif

Assets/Stickers/Editor/PBX/Objects.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System.Collections.Generic;
 using System.Collections;
 using System.Text.RegularExpressions;
@@ -891,3 +892,5 @@ public override void UpdateVars()
     }
 
 } // namespace UnityEditor.iOS.Xcode
+
+#endif

Assets/Stickers/Editor/PBX/Sections.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System;
 using System.Collections;
 using System.Collections.Generic;
@@ -119,3 +120,4 @@ public PBXProjectObjectData project
     }
 
 } // UnityEditor.iOS.Xcode
+#endif

Assets/Stickers/Editor/PBX/Serializer.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System;
 using System.Collections.Generic;
 using System.Text;
@@ -256,3 +257,4 @@ public static void WriteArray(StringBuilder sb, PBXElementArray el, int indent,
     }
 
 } // namespace UnityEditor.iOS.Xcode
+#endif

Assets/Stickers/Editor/PBX/Utils.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System;
 using System.Collections.Generic;
 using System.Text;
@@ -352,3 +353,4 @@ public static string[] SplitPath(string path)
     }
 
 } // UnityEditor.iOS.Xcode
+#endif

Assets/Stickers/Editor/PBXProject.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System.Collections.Generic;
 using System.Text;
 using System.Text.RegularExpressions;
@@ -1361,3 +1362,4 @@ public static string FixSlashes(string s)
     }
 
 } // namespace UnityEditor.iOS.Xcode
+#endif

Assets/Stickers/Editor/PBXProjectData.cs

@@ -1,3 +1,4 @@
+#if UNITY_IOS
 using System.Collections.Generic;
 using System.Text;
 using System.Text.RegularExpressions;
@@ -683,3 +684,4 @@ bool RepairStructureImpl(Dictionary<string, bool> allGuids)
 
 } // namespace UnityEditor.iOS.Xcode
 
+#endif

Assets/Stickers/Editor/StickerPackEditor.cs

@@ -174,7 +174,7 @@ private void DrawElementBackgroundCallback(Rect rect, int index, bool selected,
 
             GUI.Box(Rect.MinMaxRect(rect.xMin + 1f, rect.yMin, rect.xMax - 3f, rect.yMax), string.Empty);
 
-            if (Event.current.type != EventType.Repaint)
+            if (Event.current.type != UnityEngine.EventType.Repaint)
                 return;
 
             if (elementStyle == null)

Assets/Stickers/Editor/StickerTest.cs

@@ -1,4 +1,5 @@
-using System.IO;
+#if UNITY_IOS
+using System.IO;
 using Agens;
 using UnityEngine;
 using UnityEditor;
@@ -47,4 +48,5 @@ private static void AssertSequence(Sticker sticker, int i)
             Assert.LessOrEqual(StickerPackEditor.CalculateFileSize(sticker), 500000, "Sticker " + sticker.Name + " is larger than the allowed 500KB");
         }
     }
-}
+}
+#endif

Assets/Stickers/Editor/StickersBuildPostProcess.cs

@@ -1,4 +1,5 @@
-using UnityEditor;
+#if UNITY_IOS
+using UnityEditor;
 using UnityEditor.Callbacks;
 
 namespace Agens.Stickers
@@ -16,4 +17,5 @@ public static void OnPostprocessBuild(BuildTarget target, string pathToBuiltProj
             StickersExport.WriteToProject(pathToBuiltProject);
         }
     }
-}
+}
+#endif

Assets/Stickers/Editor/StickersExport.cs

@@ -1,4 +1,5 @@
-using System;
+#if UNITY_IOS
+using System;
 using UnityEngine;
 using System.IO;
 using System.Linq;
@@ -372,4 +373,5 @@ private static PlistDocument CreatePList(string name, string versionString = "1.
             return list;
         }
     }
-}
+}
+#endif

Assets/Stickers/StickerPackIcon.cs

@@ -552,7 +552,7 @@ public Texture2D GetDefaultTexture(int width, int height)
                 return null;
             }
 
-            var scaled = TextureScale.ScaledResized(appStore, width, height, Settings.BackgroundColor, Settings.FillPercentage / 100f, Settings.FilterMode, Settings.ScaleMode);
+            var scaled = TextureScale.ScaledResized(width == height ? appStore : messagesAppStore, width, height, Settings.BackgroundColor, Settings.FillPercentage / 100f, Settings.FilterMode, Settings.ScaleMode);
             if (scaled != null)
             {
                 scaled.name = width + "x" + height;

Assets/Stickers/TextureScale.cs

@@ -15,7 +15,7 @@ public static Texture2D ScaledResized(Texture2D src, int width, int height, Colo
             }
 
             var rtt = CreateScaledTexture(src,width,height,backgroundColor,fillPercentage,mode, anchor);
-
+            RenderTexture.active = rtt;
             var texR = new Rect(0,0,width,height);
             result.ReadPixels(texR,0,0,true);
             result.Apply(false);