Iphone NSCompoundPredicate不适用于多个谓词

以下是我的谓词：

1) category.enabled == 1 AND (author CONTAINS[c] "John" OR city CONTAINS[c] "John" OR state CONTAINS[c] "John")

2) category.enabled == 1 AND (author CONTAINS[c] "dallas" OR city CONTAINS[c] "dallas" OR state CONTAINS[c] "dallas")

3) category.enabled == 1 AND ((author CONTAINS[c] "John" OR city CONTAINS[c] "John" OR state CONTAINS[c] "John") OR (author CONTAINS[c] "dallas" OR city CONTAINS[c] "dallas" OR state CONTAINS[c] "dallas"))

下面是如何构造它的代码：

-(void)findString:(NSString *)string {
    
    if (!string) {
        string = @"";
    }
    NSMutableArray *predicatesArray = [NSMutableArray array];
    NSArray *searchQueriesArray = [string componentsSeparatedByString:@" "];
    NSPredicate *categoryPredicate = [NSPredicate predicateWithFormat:@"category.enabled == %@",[NSNumber numberWithBool:YES]];
    for(NSString *query in searchQueriesArray){
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"author CONTAINS[cd] %@ OR city CONTAINS[cd] %@ OR state CONTAINS[cd] %@", query, query, query];
        [predicatesArray addObject:predicate];
    }
    NSPredicate *fieldsSearchPredicate = [NSCompoundPredicate orPredicateWithSubpredicates:predicatesArray];
    NSArray *searchPredicatesArray = [NSArray arrayWithObjects:categoryPredicate,fieldsSearchPredicate, nil];
    NSPredicate *searchPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:searchPredicatesArray];
    self.tracks = [Track findAllSortedBy:@"name" ascending:YES withPredicate:searchPredicate];
    
    [self.tableView reloadData];
}

1谓词是用string=John构造的； 带字符串的2=达拉斯； 带字符串的3=约翰·达拉斯

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所以问题是：使用1或2谓词搜索会返回结果，但使用3则不会返回任何结果

您确定格式字符串中的%@符号周围不需要引号吗？我不确定它是否会起作用，但您是否可以尝试这种格式：@author CONTAINS[cd]\%@或city CONTAINS[cd]\%@或state CONTAINS[cd]\%@？您确定格式字符串中的%@符号周围不需要引号吗？我不确定它是否会做任何事情，但您能试试这种格式吗：@author CONTAINS[cd]\%@或city CONTAINS[cd]\%@或state CONTAINS[cd]\%@？