NSMutableArray 搜索

发布于 2024-12-23 05:04:01 字数 435 浏览 3 评论 0原文

我有一个 UISearchBar，正在对数组执行搜索并显示结果。搜索对于第一个字母非常有效，但是当我在搜索中添加字母甚至按退格键时，应用程序就会崩溃。这是我正在使用的代码：

for (NSString *sTemp in arrCatSearch)
    {
        NSRange titleResultsRange = [sTemp rangeOfString:strSearch options:NSCaseInsensitiveSearch];

        if (titleResultsRange.length > 0)
            [searchArray addObject:[catalog.catalogItems objectAtIndex:i]];
        i++;
    }

应用程序在 NSRange 行中崩溃。

原文

I have a UISearchBar and I am performing a search on an array and displaying result. The search works perfect for the first letter but the application crashes when I add a letter in search or even when I press backspace. Here is the code I am using:

for (NSString *sTemp in arrCatSearch)
    {
        NSRange titleResultsRange = [sTemp rangeOfString:strSearch options:NSCaseInsensitiveSearch];

        if (titleResultsRange.length > 0)
            [searchArray addObject:[catalog.catalogItems objectAtIndex:i]];
        i++;
    }

The application crashes in the NSRange line.

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夜夜流光相皎洁 2024-12-30 05:04:01

我正在使用 NSRange ，例如：

NSRange result = [searchString rangeOfString:searchBar.text options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch)];

在搜索栏的委托方法中

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText

I am using NSRange like :

NSRange result = [searchString rangeOfString:searchBar.text options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch)];

in search bar's delegate methods

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText

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送你一个梦 2024-12-30 05:04:01

在数组中搜索结果应该使用 NSPredicate 类来完成：

        NSPredicate *filterPredicate = [NSPredicate predicateWithFormat:@"SELF beginswith[c] %@",searchBar.text];

    //filter array based on the predicate
   searchArray = [arrCatSearch filteredArrayUsingPredicate:filterPredicate];

Searching an array for results should be done with the NSPredicate class:

        NSPredicate *filterPredicate = [NSPredicate predicateWithFormat:@"SELF beginswith[c] %@",searchBar.text];

    //filter array based on the predicate
   searchArray = [arrCatSearch filteredArrayUsingPredicate:filterPredicate];

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一口甜 2024-12-30 05:04:01

我认为这应该会给你一个更好的结果。

if ([sTemp rangeOfString: strSearch options: NSCaseInsensitiveSearch].location != NSNotFound)
{
    if (![searchArray containsObject: [catalog.catalogItems objectAtIndex: i]])
    {
        [searchArray addObject: [catalog.catalogItems objectAtIndex: i]];
    }
}

I think this should give you a better result.

if ([sTemp rangeOfString: strSearch options: NSCaseInsensitiveSearch].location != NSNotFound)
{
    if (![searchArray containsObject: [catalog.catalogItems objectAtIndex: i]])
    {
        [searchArray addObject: [catalog.catalogItems objectAtIndex: i]];
    }
}

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