Uitableview 如何向使用带有NSDictionary的数组的TableView添加搜索栏

到目前为止，我所做的是让搜索栏正常工作

- (void)viewDidLoad
{

[self makeData];

[super viewDidLoad];

self.mySearchBar.delegate = self;
self.myTableView.delegate = self;
self.myTableView.dataSource = self;

//Feedback button code here
UIBarButtonItem *feedback;
feedback = [[UIBarButtonItem alloc] initWithTitle:@"Contact"   style:UIBarButtonItemStylePlain
target:self action:@selector(showEmail:)];
self.navigationItem.leftBarButtonItem = feedback;


[self.tableView reloadData];
self.tableView.scrollEnabled = YES;

}

-(void) makeData; {

list = [[NSMutableArray alloc] init];

[list addObject:[[NSMutableDictionary alloc]
                initWithObjectsAndKeys:@"Acceleration", @"name" ,
                @"acceleration.png", @"image" ,
                @"Acceleration", @"description" ,nil]];

[list addObject:[[NSMutableDictionary alloc]
                initWithObjectsAndKeys:@"Alternating Current", @"name" ,
                @"alternating current.png", @"image" ,
                @"Alternating Current", @"description" ,nil]];

[list addObject:[[NSMutableDictionary alloc]
                initWithObjectsAndKeys:@"Ampere", @"name" ,
                @"ampere.png", @"image" ,
                @"Ampere", @"description" ,nil]];

[list addObject:[[NSMutableDictionary alloc]
                initWithObjectsAndKeys:@"Amplitude", @"name" ,
                @"amplitude.png", @"image" ,
                @"Amplitude", @"description" ,nil]];


}

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if (searchText.length == 0) {
    isFiltered = FALSE;
}
else
{
    isFiltered = TRUE;
    filteredList = [[NSMutableArray alloc] init];

    for (NSString *str in list) {
        NSRange stringRange = [str rangeOfString:searchText options:NSCaseInsensitiveSearch];

        if (stringRange.location != NSNotFound) {
            [filteredList addObject:str];
        }
    }
}
[self.myTableView reloadData];
}

-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[self.myTableView reloadData];
}

但每次我尝试在应用程序中键入内容时，都会崩溃，并收到以下消息：

2013-05-29 11:36:09.734 PhysEX[4770:c07] -[__NSDictionaryM rangeOfString:options:]: unrecognized selector sent to instance 0x9468cd0
2013-05-29 11:36:09.735 PhysEX[4770:c07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM rangeOfString:options:]: unrecognized selector sent to instance 0x9468cd0'

---

如何使搜索工作正常？

textDidChange delegate中的以下代码不正确：

for (NSString *str in list) {
    ...
}

这是因为列表数组中的对象不是NSString，而是NSDictionary。因此，错误消息指出NSDictionary无法识别选择器rangeOfString:options:因为该选择器用于NSString实例

您需要搜索NSDictionary值

for (NSDictionary *theDictionary in list) {

    for (NSString *key in theDictionary) {
        NSString *value = [theDictionary objectForKey:key];
        NSRange stringRange = [value rangeOfString:searchText options:NSCaseInsensitiveSearch];

        if (stringRange.location != NSNotFound) {
            [filteredList addObject:theDictionary];
            break;
        }
   }
}

---

textDidChange委托中的以下代码不正确：

for (NSString *str in list) {
    ...
}

这是因为列表数组中的对象不是NSString，而是NSDictionary。因此，错误消息指出NSDictionary无法识别选择器rangeOfString:options:因为该选择器用于NSString实例

您需要搜索NSDictionary值

for (NSDictionary *theDictionary in list) {

    for (NSString *key in theDictionary) {
        NSString *value = [theDictionary objectForKey:key];
        NSRange stringRange = [value rangeOfString:searchText options:NSCaseInsensitiveSearch];

        if (stringRange.location != NSNotFound) {
            [filteredList addObject:theDictionary];
            break;
        }
   }
}

---

太好了，非常感谢！现在我的搜索工作正常，但每当我点击搜索结果中的一个结果时，它就会链接到对应于原始tableview中相同定位单元格的图像，因此如果加速度是原始值的顶部，我搜索安培，当我在搜索结果中点击安培时，我需要加速？@WilliamRose如果您当前处于搜索模式，则需要修改didSelectRowAtIndexPath中的代码以使用filteredList。-（无效）tableView:（UITableView*）tableView didSelectRowAtIndexPath:（NSIndexPath*）indexPath{DetailViewController*definitionDetail=[[DetailViewController alloc]initWithNibName:@“DetailViewController”捆绑包：nil]；definitionDetail.definitionImageString=[[NSString alloc]initWithString:[[list objectAtIndex:Indexath.row]objectForKey:@“image”]；definitionDetail.title=[[list ObjectAtIndexath.row]objectForKey:@“name”]；[self.navigationController pushViewController:definitionDetail动画：YES]；}-（void）tableView:（UISearchDisplayController*）tableView未取消RowAtIndexPath:（NSIndexPath*）indexPath{DetailViewController*definitionDetail=[[DetailViewController alloc]initWithNibName:@“DetailViewController”捆绑包：nil]；definitionDetail.definitionImageString=[[NSString alloc]initWithString:[[filteredList objectAtIndex:indexPath.row]objectForKey:@“image”]]；definitionDetail.title=[[filteredList ObjectAtIndeXPath.row]objectForKey:@“name”]；[self.navigationController pushViewController:definitionDetail动画：是]；]太好了，非常感谢！现在我的搜索工作正常了，但每当我点击搜索结果中的一个结果时，它都会链接到对应于原始表视图中相同定位单元格的图像，因此如果加速度是原始值的顶部，我搜索安培，当我点击搜索结果中的安培时，我就会进入加速度？@WilliamRose you n如果当前处于搜索模式，则需要修改didSelectRowAtIndexPath中的代码以使用filteredList。-（无效）tableView:（UITableView*）tableView didSelectRowAtIndexPath:（NSIndexPath*）indexPath{DetailViewController*定义细节=[[DetailViewController alloc]initWithNibName:@“DetailViewController”捆绑包：nil]；definitionDetail.definitionImageString=[[NSString alloc]initWithString:[[list objectAtIndex:indexPath.row]objectForKey:@“image”]；definitionDetail.title=[[list ObjectAtIndeXPath.row]objectForKey:@“name”]；[self.navigationController pushViewController:definitionDetail动画：是]；}-（void）tableView:（UISearchDisplayController*）tableView没有取消RowAtIndexPath:（NSIndexPath*）indexPath{DetailViewController*定义细节=[[DetailViewController alloc]initWithNibName:@“DetailViewController”捆绑包：nil]；definitionDetail.definitionImageString=[[NSString alloc]initWithString:[[filteredList ObjectAtIndexath.row]objectForKey:@“image”]]；definitionDetail.title=[[filteredList objectAtIndex:indexPath.row]objectForKey:@“name”]；[self.navigationController pushViewController:definitionDetail动画：是]；]