问题
I'm trying to figure out how to read in the contents of an XLS document and I'm able to get the bytes just fine, but I don't have any clue where to go from here. Trying [[NSString alloc] initWithBytes:data.bytes length:data.length encoding:NSUTF8StringEncoding] and [NSString stringWithUTF8String:data.bytes] both don't get me anywhere (null). What are you supposed to do to read in the contents of an XLS file?
回答1:
Trying to combine two answer.
"There is no innate ability to read Excel data into a Foundation container, like an NSArray or NSDictionary. You could, however, convert the file (with Excel) to a comma-separated-value (CSV) file and then parse each line's cells on the iPhone using the NSString instance method -componentsSeparatedByString:."
"A comma-separated values (CSV) file stores tabular data (numbers and text) in plain-text form. Plain text means that the file is a sequence of characters, with no data that has to be interpreted instead, as binary numbers. A CSV file consists of any number of records, separated by line breaks of some kind; each record consists of fields, separated by some other character or string, most commonly a literal TAB or comma. Usually, all records have an identical sequence of fields"
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How to read cell data from an Excel document with objective-c
objective-c loading data from excel
回答2:
Even though saving your Excel file to CSV is the easier answer, sometimes that's not really what you're looking for, so I created QZXLSReader. It's a drag-and-drop solution so it's a lot easier to use. I don't think it's as feature complete, but it worked for me.
It's basically a library that can open XLS files and parse them into Obj-C classes. Once you have the classes, it's very easy to send them to Core Data or a dictionary or what have you.
I hope it helps!
来源：https://stackoverflow.com/questions/11508181/ios-read-in-xls