I'm creating an application which us开发者_JAVA百科es an NSTokenField. I need autocompletion. I'm using an NSURLRequest to request data from http://stackoverflow.com/filter/tags?_=<timestamp>&limit=6&q=<str_to_autocomplete>×tamp=<timestamp>
Where <timestamp>
is the current timestamp, an <str_to_autocomplete>
is the string to autocomplete. So, e.g. http://stackoverflow.com/filter/tags?_=1263657227137&q=lol&limit=6×tamp=1263657227137
The response is in this format:
javascript|23179
jquery|16936
sql-server|11768
ruby-on-rails|8669
best-practices|7037
ruby|6722
(The number is the number of times this tag is used).
I need to give provide the user a list under the NSTokenField with this list of tags, and the user can either select one of the list, or continue typing.
Can anyone help me? Thanks.
Edit: I'm looking at Mac Dev Center now. Should I use this method: tokenField:completionsForSubstring:indexOfToken:indexOfSelectedItem:
?
This will be send to the delegate to query an array of strings:
tokenField:completionsForSubstring:indexOfToken:indexOfSelectedItem:
These strings should then be processed by the tokenField
in representedObject
(or not if you need only strings).
Example in your tokenField
delegate:
- (NSArray *)tokenField:(NSTokenField *)tokenField completionsForSubstring:(NSString *)substring indexOfToken:(NSInteger)tokenIndex indexOfSelectedItem:(NSInteger *)selectedIndex
{
//code to find the tags strings corresponding to substring (the string typed in the token)
//then put them in an array (returnArray)
return returnArray;
}
The tokenField
will present the strings completed in a menu as you type. All details are in the doc.
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