Implementation method of using UISearchBar control to limit the number of input words in iOS

I won’t say much nonsense, I will just introduce the key code to you. The specific code is as follows:

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText // called when text changes (including clear)
{
if ( > IMPUT_MAX){
 = [ substringToIndex:15];
}
}

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