iPhone TableView搜索XML [英] iPhone TableView Search XML

问题描述

我有一个关于在tableview中向搜索栏添加XML的问题。我可以在tableview中加载所有外部XML文件，但是当我点击顶部的搜索栏并点击一封信时，它会崩溃。

I have a question about adding XML to the searchbar in a tableview. I can get all the external XML file to load in the tableview, but when I hit the searchbar up top, and hit a letter, it crashes.

我认为这是某种东西我做错了很简单。在我的RootViewController中，有一个名为searchTableView的函数。我觉得这就是它没有拿起搜索项目的地方。我认为它围绕着objectForKey：@title。当我调试时，我也收到此错误消息：NSCFArray objectForKey无法识别的选择器。这是我的searchTableView函数：

I think it's something really simple that I'm doing wrong. In my RootViewController, there's a function called searchTableView. I feel like that's where it's not picking up the search items. I think it's somewhere around the objectForKey:@"title". When I debug, I get this error message also: "NSCFArray objectForKey unrecognized selector". Here's my searchTableView function:

- (void) searchTableView {

    NSString *searchText = searchBar.text;
    NSMutableArray *searchArray = [[NSMutableArray alloc] init];

    for (NSDictionary *dictionary in listOfItems)
    {
        NSArray *array = [dictionary objectForKey:@"title"];
        [searchArray addObjectsFromArray:array];
    }

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

        if (titleResultsRange.length > 0)
            [copyListOfItems addObject:sTemp];
    }

    [searchArray release];
    searchArray = nil;
}

推荐答案

好的想通了。由于某种原因，很难找到如何执行此操作的文档。

Ok figured it out. For some reason this was really hard to find documentation how to do this.

这是我的RootViewController.m。

Here's my RootViewController.m below.

我的pList配置为：

My pList is configured as:

• 根（数组）


• Item0（字典）


• 姓名（字符串）


• 第1项（字典）


• 名称（字符串）..

• Root (Array)
• Item0 (Dictionary)
• Name (String)
• Item1 (Dictionary)
• Name (String)..

这是我的代码，希望这可以帮助其他人寻求帮助：

Here's my code, hopefully this helps anyone else looking for help on this:

@implementation RootViewController
@synthesize listOfItems, copyListOfItems;

- (void)viewDidLoad {
    [super viewDidLoad];

    //Initialize the array.
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"plistArray" ofType:@"plist"];  
    NSMutableArray* tmpArray = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
    self.listOfItems = tmpArray;
    [tmpArray release];

    //Initialize the copy array.
    copyListOfItems = [[NSMutableArray alloc] init];

    //Set the title
    self.navigationItem.title = @"Search";

    //Add the search bar
    self.tableView.tableHeaderView = searchBar;
    searchBar.autocorrectionType = UITextAutocorrectionTypeNo;

    searching = NO;
    letUserSelectRow = YES;
}



- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
    // Release anything that's not essential, such as cached data
}

#pragma mark Table view methods

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    if (searching)
        return 1;
    else
        return 1;
}

// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    if (searching)
        return [copyListOfItems count];
    else {

        //Number of rows it should expect should be based on the section
        return [listOfItems count];
    }
}


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    //Get the selected country

    NSString *selectedCountry = nil;

    if(searching)
        selectedCountry = [copyListOfItems objectAtIndex:indexPath.row];
    else {

        // Navigation logic may go here. Create and push another view controller.

    }

    NSDictionary *dictionary = [self.listOfItems objectAtIndex:indexPath.row];
    FoodDetail *dvController = [[FoodDetail alloc] initWithNibName:@"FoodDetail" bundle:nil andDictionary: dictionary];

    // Pass the selected object to the new view controller.
    [self.navigationController pushViewController:dvController animated:YES];
    [dvController release];

}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
    }

    // Set up the cell...

    if(searching) 
        cell.textLabel.text = [copyListOfItems objectAtIndex:indexPath.row];
    else {

        cell.textLabel.text = [[self.listOfItems objectAtIndex:indexPath.row] 
                               objectForKey:@"Name"];
    }

    return cell;
}



- (NSIndexPath *)tableView :(UITableView *)theTableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    if(letUserSelectRow)
        return indexPath;
    else
        return nil;
}





#pragma mark -
#pragma mark Search Bar 

- (void) searchBarTextDidBeginEditing:(UISearchBar *)theSearchBar {

    //This method is called again when the user clicks back from the detail view.
    //So the overlay is displayed on the results, which is something we do not want to happen.
    if(searching)
        return;

    //Add the overlay view.
    if(ovController == nil)
        ovController = [[OverlayViewController alloc] initWithNibName:@"OverlayView" bundle:[NSBundle mainBundle]];

    CGFloat yaxis = self.navigationController.navigationBar.frame.size.height;
    CGFloat width = self.view.frame.size.width;
    CGFloat height = self.view.frame.size.height;

    //Parameters x = origion on x-axis, y = origon on y-axis.
    CGRect frame = CGRectMake(0, yaxis, width, height);
    ovController.view.frame = frame;    
    ovController.view.backgroundColor = [UIColor grayColor];
    ovController.view.alpha = 0.5;

    ovController.rvController = self;

    [self.tableView insertSubview:ovController.view aboveSubview:self.parentViewController.view];

    searching = YES;
    letUserSelectRow = NO;
    self.tableView.scrollEnabled = NO;

    //Add the done button.
    self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] 
                                               initWithBarButtonSystemItem:UIBarButtonSystemItemDone 
                                               target:self action:@selector(doneSearching_Clicked:)] autorelease];

}

- (void)searchBar:(UISearchBar *)theSearchBar textDidChange:(NSString *)searchText {

    //Remove all objects first.
    [copyListOfItems removeAllObjects];

    if([searchText length] > 0) {

        [ovController.view removeFromSuperview];
        searching = YES;
        letUserSelectRow = YES;
        self.tableView.scrollEnabled = YES;
        [self searchTableView];
    }
    else {

        [self.tableView insertSubview:ovController.view aboveSubview:self.parentViewController.view];

        searching = NO;
        letUserSelectRow = NO;
        self.tableView.scrollEnabled = NO;
    }

    [self.tableView reloadData];
}

- (void) searchBarSearchButtonClicked:(UISearchBar *)theSearchBar {

    [self searchTableView];
}

- (void) searchTableView {

    NSString *searchText = searchBar.text;
    NSMutableArray *searchArray = [[NSMutableArray alloc] init];

    for (NSDictionary *dictionary in listOfItems)
    {
        NSString *text1 = [dictionary objectForKey:@"Name"];
        [searchArray addObject:text1];
    }   
    NSLog(@"%s: searchArray=%@", __func__, searchArray);

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

        if (titleResultsRange.length > 0)
            [copyListOfItems addObject:sTemp];
    }

    [searchArray release];
    searchArray = nil;
}

- (void) doneSearching_Clicked:(id)sender {

    searchBar.text = @"";
    [searchBar resignFirstResponder];

    letUserSelectRow = YES;
    searching = NO;
    self.navigationItem.rightBarButtonItem = nil;
    self.tableView.scrollEnabled = YES;

    [ovController.view removeFromSuperview];
    [ovController release];
    ovController = nil;

    [self.tableView reloadData];
}


- (void)dealloc {

    [ovController release];
    [copyListOfItems release];
    [searchBar release];
    [listOfItems release];
    [super dealloc];
}


@end

这篇关于iPhone TableView搜索XML的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！