Monday, April 30, 2012

ICU's MessageFormat on iOS

It is my understanding that iOS uses ICU under the hood. I'd like to access the functionality of ICU's MessageFormat for strings involving numbers and plurals, for example,

There {0,choice,0#are no files|1#is one file|1<are {0,number,integer} files}.

Does iOS expose this capability? If so how do I use it? I thought I might be able to write

[NSString stringWithFormat: "There {0,choice,0#are no files|1#is one file|1<are {0,number,integer} files}.", n];


[NSString stringWithFormat: "There {0,plural, =0{are no files}=1{is one file}other{are %ld files}}.", n];

But these formats (ICU4J and ICU, respectively) do not work.

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