UE4对本地文件的操作

首先是文件的读写

.h

    UFUNCTION(BlueprintCallable, Category = "File operation")        static FString ReadStringToFile(FString Dir);    UFUNCTION(BlueprintCallable, Category = "File operation")        static void WriteStringToFile(FString FileName, FString content);

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.cpp

FString ACPP_Test::ReadStringToFile(FString Dir){    FString Result;    FFileHelper::LoadFileToString(Result, *Dir);    return Result;}void ACPP_Test::WriteStringToFile(FString FileName, FString content){    FFileHelper::SaveStringToFile(content, *FileName);}

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查找文件或者文件夹#include "Runtime/Core/Public/HAL/FileManagerGeneric.h"

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.h

    UFUNCTION(BlueprintCallable, Category = "File operation")        static TArray<FString> FindFiles(FString Path, FString Filter, bool Files, bool Directory);

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.cpp

TArray<FString> ACPP_Test::FindFiles(FString Path, FString Filter, bool Files, bool Directory){    TArray<FString> FilePathList;    FilePathList.Empty();        FFileManagerGeneric::Get().FindFilesRecursive(FilePathList, *Path, *Filter, Files, Directory);    return FilePathList;}

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指定文件移动到某处(修改文件路径)#include "Runtime/Core/Public/HAL/FileManagerGeneric.h"

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.h

    UFUNCTION(BlueprintCallable, Category = "File operation")        static bool MoveFileTo(FString To, FString From);

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.cpp

bool ACPP_Test::MoveFileTo(FString To, FString From){    return IFileManager::Get().Move(*To, *From);}

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删除指定文件#include "Runtime/Core/Public/HAL/FileManagerGeneric.h"

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.h

UFUNCTION(BlueprintCallable, Category = "File operation")        static bool DeleteFile(FString FilePath);

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.cpp

bool ACPP_Test::DeleteFile(FString FilePath){    return IFileManager::Get().Delete(*FilePath);}

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打开指定文件#include "Runtime/Core/Public/HAL/FileManagerGeneric.h"

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.h

    UFUNCTION(BlueprintCallable, Category = "File operation")        static void   OpenFile(FString FilePath);

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.cpp

void ACPP_Test::OpenFile(FString FilePath){    FPlatformProcess::CreateProc(*FilePath, nullptr, true, false, false, nullptr, 0, nullptr, nullptr);}

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创建文件夹

.h

    UFUNCTION(BlueprintCallable, Category = "File operation")        static void CreateDic(FString filePath);

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.cpp

void ACPP_Test::CreateDic(FString filePath){    IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();    PlatformFile.CreateDirectory(*filePath);}

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删除文件夹

.h

UFUNCTION(BlueprintCallable, Category = "File operation")        static void DeleteDic(FString filePath);

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.cpp

void ACPP_Test::DeleteDic(FString filePath){    IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();    PlatformFile.DeleteDirectory(*filePath);}

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奈斯，很赞