将由逗号分隔的NSString转换为NSArray [英] Convert NSString separated by comma to NSArray

问题描述

可能重复：

在Objective-C中将NSArray转换为NSString

我有一个NSArray myArray数组，这里是内容：

I have an array of an NSArray myArray, here is the content:

 (
            "<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246",
            "<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324",
            "<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367"
 )

我使用下面的代码分配给NSString myString：

I used the code below to assign to an NSString myString:

NSString *myString = [myArray description];

输出仍然如预期：

 (
            "<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246",
            "<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324",
            "<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367"
 )

现在，我想将myString转换回数组名为newArray，我使用了这个：

Now, say I want to convert myString back to an array named newArray, I used this:

NSArray *newArray = [[NSArray alloc]init];
newArray = [myString componentsSeparatedByString:@","];

但是newArray的内容现在不同了：

But the content of the newArray is now different:

(       
"(
    \"<MPConcreteMediaItem: 0x1b7dd0> 8671085923283003246\"",
        "
    \"<MPConcreteMediaItem: 0x1b7e50> 16275751483823231324\"",
        "
    \"<MPConcreteMediaItem: 0x1b7e70> 4976771456698615367\""
)"
) 

我知道我需要做些什么来解决这个问题？

Any idea what I need to do to fix this?

推荐答案

有两种方法

• - （NSArray *）componentsSeparatedByString ：（NSString *）分隔符


• - （NSString *）componentsJoinedByString：（NSString *）separator

• - (NSArray *)componentsSeparatedByString:(NSString *)separator
• - (NSString *)componentsJoinedByString:(NSString *)separator

使用

NSString *myString = [myArray componentsJoinedByString:@","]; //instead of [myArray description];

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