[iOS] FileSystem

file system

 

    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *dirPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true);
    NSString *docDir =  [dirPath objectAtIndex:0];
    NSLog(@"currentPath %@", docDir);

    NSURL *documentsUrl = [[fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] objectAtIndex:0];
    NSURL *fileUrl = [documentsUrl URLByAppendingPathComponent:@"testFile.txt"];
    NSString *myTestString = @"HELLO WORLD";
    [myTestString writeToFile:fileUrl atomically:true encoding:NSUTF8StringEncoding error:nil];

 

//   NSURL *downloadURL = [fileManager URLForDirectory:NSDownloadsDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:nil];
    //download
//    NSFileManager *fileManager = [NSFileManager defaultManager];
//
//    NSArray *dirPath = [fileManager URLsForDirectory:NSDownloadsDirectory inDomains:NSUserDomainMask];
////    NSArray *dirPath = NSSearchPathForDirectoriesInDomains(NSDownloadsDirectory, NSUserDomainMask, true);
//    NSString *docDir = [dirPath objectAtIndex:0];
//
//    NSArray *fileList = [fileManager contentsOfDirectoryAtPath:docDir error:nil];
//    for(NSString *fileName in fileList) {
//        NSLog(@"array in fileName: %@", fileName);
//    }
    
    //customPath 테스트
//    NSFileManager *fileManager = [NSFileManager defaultManager];
//    NSArray *dirPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true);
//    NSString *docDir = [dirPath objectAtIndex:0];
//
//    NSBundle *bundle = [NSBundle bundleForClass:MLROCRManager2.class];
//    NSArray *bundleFiles = [fileManager contentsOfDirectoryAtPath:[bundle bundlePath] error:nil];
//
//    for(NSString *fileName in bundleFiles) {
//        NSLog(@"array in fileName: %@", fileName);
//        NSString *bundlePath = [bundle pathForResource:fileName ofType:nil];
//        NSString *savePath = [docDir stringByAppendingPathComponent:fileName];  //저장할 Path
//        [fileManager copyItemAtPath:bundlePath toPath:savePath error:nil];
//    }
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *dirPath = [fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask];
//    NSArray *dirPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true);
    NSURL *docURL = [dirPath objectAtIndex:0];
    NSURL *downULR = [docURL URLByAppendingPathComponent:@"Downloads"];

 

NSData 파일로 저장하기

/*
 NSData를 fileName으로 저장하는 함수

 @param data NSData
 @param fileName 파일 이름(확장자도 필요함)
 */

-(void) saveDataWithData:(NSData*)data withFileName:(NSString*)fileName
{
    NSString *documentPath =[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    NSString *file;
    BOOL flag;
    file= [documentPath stringByAppendingPathComponent:fileName];
    flag= [data writeToFile:file options:NSDataWritingFileProtectionComplete error:nil];
    if (flag) NSLog(@"saving Suceess!!!");
}

 

zeddios.tistory.com/440

iOS ) FileManager를 이용해 파일/폴더 만드는 법

www.appcoda.com/files-app-integration

How to Integrate Your App with Files App in iOS 11 | Swift Tutorial

https://life-shelter.tistory.com/147

[iOS] NSData 파일로 저장하기