update samples

Assets/YooAsset/Samples~/Space Shooter/ThirdParty/StreamingAssetsHelper/Editor/StreamingAssetsHelperEditor.cs

@@ -13,22 +13,24 @@ internal class AndroidPost : UnityEditor.Android.IPostGenerateGradleAndroidProje
 		path = path.Replace("\\", "/");
 		string untityActivityFilePath = $"{path}/src/main/java/com/unity3d/player/UnityPlayerActivity.java";
 		var readContent = System.IO.File.ReadAllLines(untityActivityFilePath);
-		string postContent = "  //auto-gen-function\n" +
+		string postContent =
-			"   public boolean CheckAssetExist(String filePath){\n" +
+			"    //auto-gen-function \n" +
+			"    public boolean CheckAssetExist(String filePath) \n" +
+			"    { \n" +
 			"        android.content.res.AssetManager assetManager = getAssets(); \n" +
-			"       java.io.InputStream inputStream = null;\n" +
+			"        try \n" +
-			"       try {\n" +
+			"        { \n" +
-			"           inputStream = assetManager.open(filePath);\n" +
+			"            java.io.InputStream inputStream = assetManager.open(filePath); \n" +
-			"           if(null != inputStream)return true;\n" +
+			"            if (null != inputStream) \n" +
-			"       }catch(java.io.IOException e) {\n" +
+			"            { \n" +
-			"           e.printStackTrace();\n" +
-			"        }finally{\n" +
-			"            try {\n" +
 			"                 inputStream.close(); \n" +
-			"           } catch (java.io.IOException e) {\n" +
+			"                 return true; \n" +
-			"               e.printStackTrace();\n" +
 			"            } \n" +
 			"        } \n" +
+			"        catch(java.io.IOException e) \n" +
+			"        { \n" +
+			"            e.printStackTrace(); \n" +
+			"        } \n" +
 			"        return false; \n" +
 			"    } \n" +
 			"}";
@@ -37,3 +39,25 @@ internal class AndroidPost : UnityEditor.Android.IPostGenerateGradleAndroidProje
 		System.IO.File.WriteAllLines(untityActivityFilePath, readContent);
 	}
 }
+
+/*
+//auto-gen-function
+public boolean CheckAssetExist(String filePath)
+{
+	android.content.res.AssetManager assetManager = getAssets();
+	try
+	{
+		java.io.InputStream inputStream = assetManager.open(filePath);
+		if(null != inputStream)
+		{
+			inputStream.close();
+			return true;
+		}
+	}
+	catch(java.io.IOException e)
+	{
+		e.printStackTrace();
+	}
+	return false;
+}
+*/

Assets/YooAsset/Samples~/Space Shooter/ThirdParty/StreamingAssetsHelper/Runtime/StreamingAssetsHelper.cs

@@ -1,10 +1,13 @@
 //-------------------------------------
 // 作者：Stark
 //-------------------------------------
+using System.Collections.Generic;
 using UnityEngine;
 
 public sealed class StreamingAssetsHelper
 {
+	private static readonly Dictionary<string, bool> _cacheData = new Dictionary<string, bool>(1000);
+
 #if UNITY_ANDROID && !UNITY_EDITOR
 	private static AndroidJavaClass _unityPlayerClass;
 	public static AndroidJavaClass UnityPlayerClass
@@ -33,12 +36,22 @@ public sealed class StreamingAssetsHelper
 	/// </summary>
 	public static bool FileExists(string filePath)
 	{
-		return CurrentActivity.Call<bool>("CheckAssetExist", filePath);
+		if (_cacheData.TryGetValue(filePath, out bool result) == false)
+		{
+			result = CurrentActivity.Call<bool>("CheckAssetExist", filePath);
+			_cacheData.Add(filePath, result);
+		}
+		return result;
 	}
 #else
 	public static bool FileExists(string filePath)
 	{
-		return System.IO.File.Exists(System.IO.Path.Combine(Application.streamingAssetsPath, filePath));
+		if (_cacheData.TryGetValue(filePath, out bool result) == false)
+		{
+			result = System.IO.File.Exists(System.IO.Path.Combine(Application.streamingAssetsPath, filePath));
+			_cacheData.Add(filePath, result);
+		}
+		return result;
 	}
 #endif
 }