Objective-C arrayWithPlist （已经在 NSString 中）

发布于 2024-09-29 19:44:02 字数 270 浏览 2 评论 0原文

我有一个已经包含 pList 的 NSString。

如何将其转换为 NSArray？（无需将其保存到磁盘，只需使用 arrayWithContentsOfFile 重新加载它，然后必须将其删除。）

make arrayWithPlist 或 arrayWithString 方法在哪里？（或者我该如何制作自己的？）

 NSArray *anArray = [NSArray arrayWithPlist:myPlistString];

原文

I have an NSString that already contains a pList.

How do I turn it into an NSArray?
(WITHOUT saving it to disk, only to reload it back with arrayWithContentsOfFile, and then have to delete it.)

Where is the make arrayWithPlist or arrayWithString method?
(Or how would I make my own?)

 NSArray *anArray = [NSArray arrayWithPlist:myPlistString];

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红玫瑰 2024-10-06 19:44:02

您想要使用 NSPropertyListSerialization：

NSData *data = [plistString dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSArray *plist = [NSPropertyListSerialization
                  propertyListWithData:plistData
                  options:/*unused*/0
                  format:NULL
                  error:&error];
if (!plist) {
    NSLog(@"%s: Failed to create plist: %@",
          __func__, error ?: @"(unknown error)");
}

该特定方法是在 iOS 4.0/Mac OS X 10.6 中引入的。在这些版本之前，您将使用：

NSData *data = [plistString dataUsingEncoding:NSUTF8StringEncoding];
NSString *errorText = nil;
NSArray *plist = [NSPropertyListSerialization
                  propertyListFromData:plistData
                  mutabilityOption:NSPropertyListImmutable
                  format:NULL
                  errorDescription:&errorText];
if (!plist) {
    NSLog(@"%s: Failed to create plist: %@",
          __func__, errorText ?: @"(unknown error)");

    /* Part of the reason this method was replaced:
     * It is the caller's responsibility to release the error description
     * if any is returned. This is completely counter-intuitive.
     */
    [errorText release], errorText = nil;
}

You want to use NSPropertyListSerialization:

NSData *data = [plistString dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSArray *plist = [NSPropertyListSerialization
                  propertyListWithData:plistData
                  options:/*unused*/0
                  format:NULL
                  error:&error];
if (!plist) {
    NSLog(@"%s: Failed to create plist: %@",
          __func__, error ?: @"(unknown error)");
}

That particular method was introduced with iOS 4.0/Mac OS X 10.6. Prior to those releases, you would use:

NSData *data = [plistString dataUsingEncoding:NSUTF8StringEncoding];
NSString *errorText = nil;
NSArray *plist = [NSPropertyListSerialization
                  propertyListFromData:plistData
                  mutabilityOption:NSPropertyListImmutable
                  format:NULL
                  errorDescription:&errorText];
if (!plist) {
    NSLog(@"%s: Failed to create plist: %@",
          __func__, errorText ?: @"(unknown error)");

    /* Part of the reason this method was replaced:
     * It is the caller's responsibility to release the error description
     * if any is returned. This is completely counter-intuitive.
     */
    [errorText release], errorText = nil;
}

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