如何解决这个"索引0超出空数组的界限!"

检查是否有来自数据库的内容时,我遇到了问题:

码:

hourPrograma: @"12:00";
NSArray *hourLinha = [hourProgram componentsSeparatedByString:@":"];

NSArray * test = [notificationDAO selectHourMin:[hourLinha[0] intValue]:[hourLinha[1] intValue]];

if (!test[0]) {
   NSLog(@"ok!!!");
} else {
   NSLog(@"empty!!!");
}

我的查询:

-(NSArray *) selectHourMin:(NSInteger *) hour: (NSInteger *) min {
    query = [NSString stringWithFormat:@"SELECT hour, min FROM notification WHERE %i = hour AND %i = min", hour, min];
    NSArray * resp = [self loadDataFromDB:query];
    return resp;
}

当我检查它是否为空或是否返回某些内容时,会出现错误.

用.替换test [0]

test.count > 0