iOS 關於檔案操作 NSFileManager

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• 建立檔案夾

  + (BOOL)creatDir:(NSString *)path {    if (path.length==0) {        return NO;    }    NSFileManager *fileManager = [NSFileManager defaultManager];    BOOL isSuccess = YES;    BOOL isExist = [fileManager fileExistsAtPath:path];    if (isExist==NO) {        NSError *error;        if (![fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:&error]) {            isSuccess = NO;            NSLog(@"creat Directory Failed:%@",[error localizedDescription]);        }    }    return isSuccess;}

  　　

• 建立檔案

  + (BOOL)creatFile:(NSString*)filePath {    if (filePath.length==0) {        return NO;    }    NSFileManager *fileManager = [NSFileManager defaultManager];    if ([fileManager fileExistsAtPath:filePath]) {        return YES;    }    NSError *error;    NSString *dirPath = [filePath stringByDeletingLastPathComponent];    BOOL isSuccess = [fileManager createDirectoryAtPath:dirPath withIntermediateDirectories:YES attributes:nil error:&error];    if (error) {        NSLog(@"creat File Failed:%@",[error localizedDescription]);    }    if (!isSuccess) {        return isSuccess;    }    isSuccess = [fileManager createFileAtPath:filePath contents:nil attributes:nil];    return isSuccess;}

  　　

• 寫入檔案

  + (BOOL)writeToFile:(NSString*)filePath contents:(NSData *)data {    if (filePath.length==0) {        return NO;    }    BOOL result = [self creatFile:filePath];    if (result) {        if ([data writeToFile:filePath atomically:YES]) {            NSLog(@"write Success");        }else{            NSLog(@"write Failed");        }    }    else{        NSLog(@"write Failed");    }    return result;}

  　　

• 追加資料

  + (BOOL)appendData:(NSData*)data withPath:(NSString *)filePath {    if (filePath.length==0) {        return NO;    }    BOOL result = [self creatFile:filePath];    if (result) {        NSFileHandle *handle = [NSFileHandle fileHandleForWritingAtPath:filePath];        [handle seekToEndOfFile];        [handle writeData:data];        [handle synchronizeFile];        [handle closeFile];    }    else{        NSLog(@"appendData Failed");    }    return result;}

　　

 

iOS 關於檔案操作 NSFileManager