ios - 无法在 iOS 中创建文件(cocoa 错误 514。)

Question

在我的应用程序中，我必须创建一个 csv 文件，因此我创建了此方法:

+ (void)saveFileFromArray:(NSMutableArray *)promoArray {
    NSMutableString *target = [@"Nome,Cognome,E-mail,Data di nascita,Indirizzo,Città,Cap,Telefono\n" mutableCopy];

    for (NSDictionary *dict in promoArray) {
        [target appendFormat:@"%@,%@,%@,%@,%@,%@,%@,%@\n",dict[@"name"],dict[@"surname"],dict[@"email"],dict[@"birthdate"],dict[@"address"],dict[@"city"],dict[@"zip"],dict[@"phone"]];
    }
    NSError *error = nil;

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *fileName = [documentsDirectory stringByAppendingPathComponent:@"profiles.csv"];

    NSURL *url = [NSURL URLWithString:fileName];

    BOOL success = [target writeToURL:url atomically:YES encoding:NSUTF8StringEncoding error:&error];

    if (!success) {
        NSLog(@"Errore: %@", error.localizedDescription);
    }
}

但是当我运行应用程序时，它暂时保存 .plist 文件，但不保存 .csv 文件。当我查看控制台时，它告诉我:错误:操作无法完成。 ( cocoa 错误 514。)。于是我在网上搜索了错误514是什么意思，我发现this ，我在其中搜索了错误，发现 NSFileWriteInvalidFileNameError = 514，我该如何解决这个错误？按照我的方法，有什么问题。希望您能帮我解决这个问题

我自己解决了:

+ (void)saveFileFromArray:(NSMutableArray *)promoArray {
    NSMutableString *target = [@"Nome,Cognome,E-mail,Data di nascita,Indirizzo,Città,Cap,Telefono\n" mutableCopy];

    for (NSDictionary *dict in promoArray) {
        [target appendFormat:@"%@,%@,%@,%@,%@,%@,%@,%@\n",dict[@"name"],dict[@"surname"],dict[@"email"],dict[@"birthdate"],dict[@"address"],dict[@"city"],dict[@"zip"],dict[@"phone"]];
    }
    NSError *error = nil;

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *fileName = [documentsDirectory stringByAppendingPathComponent:@"profiles.csv"];

    BOOL success = [target writeToFile:fileName atomically:YES encoding:NSUTF8StringEncoding error:&error];

    if (!success) {
        NSLog(@"Errore: %@", error.localizedDescription);
    }
}

Answer 1

更改此行

BOOL success = [target writeToURL:url atomically:YES encoding:NSUTF8StringEncoding error:&error];

至

BOOL success = [target writeToFile:fileName atomically:YES encoding:NSUTF8StringEncoding error:&error];