文档目录中的读/写文件问题 [英] Read/write file in Documents directory problem

问题描述

我正在尝试将一个非常基本的文本字符串写入我的文档目录，然后从那里开始工作，以便稍后保存其他文件等。

I am trying to write a very basic text string to my documents directory and work from there to later save other files etc.

我目前仍然坚持使用它将任何内容写入我的文档目录

I am currently stuck with it not writing anything into my Documents directory

（在我的 viewDidLoad 中）

NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)
NSString *documentsDirectory = [pathArray objectAtIndex:0];

NSString *textPath = [documentsDirectory stringByAppendingPathComponent:@"file1.txt"];
NSString *text = @"My cool text message";

[[NSFileManager defaultManager] createFileAtPath:textPath contents:nil attributes:nil];
[text writeToFile:textPath atomically:NO encoding:NSUTF8StringEncoding error:NULL];
NSLog(@"Text file data: %@",[[NSFileManager defaultManager] contentsAtPath:textPath]);

这是打印出来的：

2011-06-27 19：04：43.485 MyApp [5731：707]文本文件数据：（null）

2011-06-27 19:04:43.485 MyApp[5731:707] Text file data: (null)

如果我试试这个，它也打印出null：

If I try this, it also prints out null:

NSLog(@"My Documents: %@", [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:NULL]);

在写这个文件时我错过了什么或者我做错了什么？
我需要在我的plist或者所需的一些框架/进口中改变它吗？

What have I missed or am I doing wrong while writing to this file? Might it be something I need to change in my plist or some frameworks/imports needed?

谢谢

我通过writeToFile传递了一个NSError对象并收到此错误：

I passed a NSError object through the writeToFile and got this error:

错误：错误Domain = NSCocoaErrorDomain Code = 512操作无法完成。（Cocoa错误512.）UserInfo = 0x12aa00 {NSFilePath = / var / mobile / Applications / 887F4691-3B75-448F-9384-31EBF4E3B63E / Documents / file1.txt，NSUnderlyingError = 0x14f6b0操作无法完成。不是目录}

Error: Error Domain=NSCocoaErrorDomain Code=512 "The operation couldn’t be completed. (Cocoa error 512.)" UserInfo=0x12aa00 {NSFilePath=/var/mobile/Applications/887F4691-3B75-448F-9384-31EBF4E3B63E/Documents/file1.txt, NSUnderlyingError=0x14f6b0 "The operation couldn’t be completed. Not a directory"}

这在模拟器上工作正常，但在我的手机上没有：/

This works fine on the simulator but not on my phone :/

推荐答案

通过在info.plist中设置非标准捆绑ID来解决问题

The problem got solved by setting a non standard Bundle ID in die info.plist

我使用iTunes Connect中的Bundle ID来获取此特定应用。现在一切都很完美。

I used the Bundle ID from iTunes Connect for this specific app. Now everything works perfectly.

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