ios - 如何根据 nsarray 过滤谓词

Question

我有以下 uisearchbar 委托(delegate)方法。我希望此方法搜索我的对象 arrayofterms 属性，以查看是否有任何元素与 searchText 参数匹配。

这行得通吗？ :

-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope {


    [self.filteredArray removeAllObjects];
    // something like this is what the objects array attribute will look like: NSArray *arrayofterms = [NSArray arrayWithObjects:@"Miguel", @"Ben", @"Adam", @"Melissa", nil];

    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.arrayofterms contains[c] %@",searchText];
    self.filteredArray = [NSMutableArray arrayWithArray:[self.planDataArray filteredArrayUsingPredicate:predicate]];

    }

Answer 1

数组中是否包含字符串？然后...

NSPredicate *predicate = [NSPredicate predicateWithBlock:^BOOL(NSString *string, NSDictionary *bind) {
    return [string isEqualToString:searchText];
}];

self.filteredArray = [[self.planDataArray filteredArrayUsingPredicate:predicate] mutableCopy];

如果 planDataArray 包含某种其他类型的对象，可能是自定义对象，那么...

NSPredicate *predicate = [NSPredicate predicateWithBlock:^BOOL(MyCustomObject *object, NSDictionary *bind) {
    NSString *string = object.someStringProperty;
    return [string isEqualToString:searchText];
}];