搜索只在开头匹配单词

试用使用 rangeOfString:options: 而是:

for (Person *person in personsOfInterest) {
    NSRange r = [person.name rangeOfString:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch)];

    if (r.location != NSNotFound)
    {
            [self.filteredListContent addObject:person];
    }
}

另一种方法是使用nspredicate来完成此操作:

NSPredicate *namePredicate = [NSPredicate predicateWithFormat:@"name CONTAINS[cd] %@", searchText];
//the c and d options are for case and diacritic insensitivity
//now you have to do some dancing, because it looks like self.filteredListContent is an NSMutableArray:
self.filteredListContent = [[[personsOfInterest filteredArrayUsingPredicate:namePredicate] mutableCopy] autorelease];


//OR YOU CAN DO THIS:
[self.filteredListContent addObjectsFromArray:[personsOfInterest filteredArrayUsingPredicate:namePredicate]];

-[NSString rangeOfString:options:] 朋友就是你想要的。它返回:

“安” NSRange 结构,给出第一次出现的接收器中的位置和长度 aString ,对mask中的选项进行模块化。退换商品 {NSNotFound, 0} 如果 收敛的 未找到或为空( @"" “