我正在使用xcode 5,并且想要搜索tableView数据。我将“搜索栏和搜索显示控制器”用于“搜索”,将“ CustomCell”用于“ tableCell”,并且所有数据都是通过NSXMLParsing从远程服务器进行解析的。所有数据都以其相应的图像显示,没有任何问题,但是我的搜索选项无法正常工作。我对单阵列搜索使用相同的代码,但仍有效。但是这里不是。在搜索时它已崩溃。这是我的代码:
-(void)loadData
{
countryParser = [[CountryParser alloc] loadXMLByURL:@"http://www.avowstudio.com/iOS/PartProject/iOS7/XMLParsingWithCustomeCell/XMLFiles/XMLParsingWithCustomCell.xml"];
countryArray = [countryParser countryArray];
displayItems = [[NSMutableArray alloc] initWithArray:countryArray];
[self.countryTableView reloadData];
[activityIndicator stopAnimating];
[self loadArray];
}
-(void) loadArray
{
CountryInfo *currentCountryOne = [[CountryInfo alloc] init];
totalArray = [[NSMutableArray alloc] init];
for (int i=0; i < [countryArray count]; i++)
{
currentCountryOne = [countryArray objectAtIndex:i];
[totalArray addObject:currentCountryOne.countryName];
}
}
-(void) searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if ([searchText length] == 0)
{
[displayItems removeAllObjects];
[displayItems addObjectsFromArray:countryArray];
}
else
{
[displayItems removeAllObjects];
displayItems = [[NSMutableArray alloc] init];
for (NSString *string in totalArray)
{
NSRange stringRang = [string rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (stringRang.location != NSNotFound)
{
[displayItems addObject:string];
}
}
}
[self.countryTableView reloadData];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [displayItems count];
}
// This method is kept the "tableRow height" after "done searching"
- (void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView
{
tableView.rowHeight = 100;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
CountryCustomCell *Cell = [self.countryTableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!Cell)
{
Cell = [[CountryCustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
currentCountry = [displayItems objectAtIndex:indexPath.row];
Cell.ContinentLabel.text = currentCountry.continent;
Cell.CountryNameLabel.text = currentCountry.countryName;
Cell.CapitalLabel.text = currentCountry.capital;
imageQueueCountryFlag = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
dispatch_async(imageQueueCountryFlag, ^
{
UIImage *imageCountryFlag = [UIImage imageWithData:[NSData dataWithContentsOfURL: [NSURL URLWithString:[currentCountry countryFlag]]]];
dispatch_async(dispatch_get_main_queue(), ^
{
Cell.CountryFlagImageView.image = imageCountryFlag;
[Cell setNeedsLayout];
});
});
return Cell;
}
我不想在带有“标志”之类的“ numberOfRowsInSection”和“ cellForRowAtIndexPath”中使用两个Array或类似的东西,以避免更多的编码。如果有人熟悉,请在这里分享。非常感谢高级。
我认为你添加的对象CountryInfo在[countryParser countryArray] 。在loadArray方法中,您只需初始化一个空白对象currentCountryOne,并在每次执行for循环时,尝试将空白对象的属性添加到totalArray中。请进行以下更改:
-(void) loadArray
{
totalArray = countryArray;
}
-(void) searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if ([searchText length] == 0)
{
[displayItems removeAllObjects];
[displayItems addObjectsFromArray:countryArray];
}
else
{
[displayItems removeAllObjects];
displayItems = [[NSMutableArray alloc] init];
for (CountryInfo *country in totalArray)
{
NSRange stringRang = [country.countryName rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (stringRang.location != NSNotFound)
{
[displayItems addObject:country];
}
}
}
[self.countryTableView reloadData];
}
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