search分组的uitableview
我是objectiv-C开发中的新手，我试图过滤分组tableview的内容。这是我所做的，但仍然没有成功：
- (void)filterContentForSearchText:(NSString *)searchText scope:(NSString *)scope { NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@", searchText];; //activities is table that contains my objects that I display their contents in the table self.filteredData = [activities filteredArrayUsingPredicate:resultPredicate]; } - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption { [self filterContentForSearchText:[self.searchDisplayController.searchBar text] scope: [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]]; // Return YES to cause the search result table view to be reloaded. return YES; } //activite is my object that I use to desplay its attribut in table IPADActivity *activite ; if (ThetableView == self.searchDisplayController.searchResultsTableView) { activite = [self.filteredData objectAtIndex:indexPath.row]; } else{ activite = [[objects objectForKey:[objectsIndex objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row]; } 任何build议请
// // ViewController.m // SearchTut // #import "ViewController.h" #import "SearchTableCell.h" #import "XMLReader.h" @interface ViewController ()<UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate> @property (weak, nonatomic) IBOutlet UITableView *tablView; @property (weak, nonatomic) IBOutlet UISearchBar *searchBr; @property (nonatomic, strong) NSMutableArray *arrayList; //main table array @property (nonatomic, strong) NSMutableArray *arrayFilteredList; //array with search results while user types in search bar @property (nonatomic, strong) NSMutableDictionary *dictList; //need to manufacture an equivalent dictionary like below from the json array /* @{ @"B" : @[@"Bear", @"Black Swan", @"Buffalo"], @"C" : @[@"Camel", @"Cockatoo"], @"D" : @[@"Dog", @"Donkey"], @"E" : @[@"Emu"], @"G" : @[@"Giraffe", @"Greater Rhea"], @"H" : @[@"Hippopotamus", @"Horse"], @"K" : @[@"Koala"], @"L" : @[@"Lion", @"Llama"], @"M" : @[@"Manatus", @"Meerkat"], @"P" : @[@"Panda", @"Peacock", @"Pig", @"Platypus", @"Polar Bear"], @"R" : @[@"Rhinoceros"], @"S" : @[@"Seagull"], @"T" : @[@"Tasmania Devil"], @"W" : @[@"Whale", @"Whale Shark", @"Wombat"] }; Refer: https://www.appcoda.com/ios-programming-index-list-uitableview/ */ @property (nonatomic, strong) NSMutableDictionary *dictListFiltered; //dictionary when searched @property (nonatomic, assign) BOOL isFiltered; //If user starts entering text in search bar, this flag is YES. If there is no text in search bar, this flag is NO. @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Initialisers self.tablView.dataSource = self; self.tablView.delegate = self; self.searchBr.delegate = self; self.arrayList = [NSMutableArray array]; self.dictList = [NSMutableDictionary dictionary]; self.dictListFiltered = [NSMutableDictionary dictionary]; self.isFiltered = NO; //Get and parse XML from file and load the result in array NSString *strXMLPath = [[NSBundle mainBundle] pathForResource:@"List" ofType:@"xml"]; NSError *error; NSString *strXML = [NSString stringWithContentsOfFile:strXMLPath encoding:NSUTF8StringEncoding error:&error]; NSDictionary *dict = [XMLReader dictionaryForXMLString:strXML error:&error]; NSDictionary *dictPriceList = [dict objectForKey:@"PRICELIST"]; NSArray *arrayLine = [dictPriceList objectForKey:@"LINE"]; NSMutableArray *arrayTempPriceList = [NSMutableArray array]; for (NSDictionary *dict in arrayLine) { [arrayTempPriceList addObject:dict]; } self.arrayList = arrayTempPriceList; NSLog(@"%@", self.arrayList); //Create dictionary for sectioned table grouped with respect to PRICELISTCATEGORY value. PRICELISTCATEGORY value will be set in the section title. Logic to group table in sections is below [self groupXMLinSectionsWithArray:arrayTempPriceList]; } - (void)groupXMLinSectionsWithArray:(NSMutableArray *)arrayJson { if (arrayJson.count > 0) { //added this condition to reset json during search. for (NSDictionary *dict in arrayJson ) { NSString *strPriceListCategory = [[dict objectForKey:@"PRICELISTCATEGORY"] objectForKey:@"text"]; if (self.isFiltered) { if ([[self.dictListFiltered allKeys] containsObject:strPriceListCategory]) { NSMutableArray *arrayTemp = [self.dictListFiltered objectForKey:strPriceListCategory]; [arrayTemp addObject:dict]; [self.dictListFiltered setObject:arrayTemp forKey:strPriceListCategory]; } else { NSMutableArray *arrayTemp = [[NSMutableArray alloc] initWithObjects:dict, nil]; [self.dictListFiltered setObject:arrayTemp forKey:strPriceListCategory]; } } else { if ([[self.dictList allKeys] containsObject:strPriceListCategory]) { NSMutableArray *arrayTemp = [self.dictList objectForKey:strPriceListCategory]; [arrayTemp addObject:dict]; [self.dictList setObject:arrayTemp forKey:strPriceListCategory]; } else { NSMutableArray *arrayTemp = [[NSMutableArray alloc] initWithObjects:dict, nil]; [self.dictList setObject:arrayTemp forKey:strPriceListCategory]; } } } } else { //if search results yield no json array, then remove all objects from dictionary [self.dictList removeAllObjects]; [self.dictListFiltered removeAllObjects]; } [self.tablView reloadData]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } #pragma mark - TableView Datasource - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { NSArray *arrayTemp = [NSArray array]; if (self.isFiltered) { NSArray *arrayListAllKeys = [self.dictListFiltered allKeys]; arrayTemp = [self.dictListFiltered objectForKey:[arrayListAllKeys objectAtIndex:section]]; } else { NSArray *arrayListAllKeys = [self.dictList allKeys]; arrayTemp = [self.dictList objectForKey:[arrayListAllKeys objectAtIndex:section]]; } return [arrayTemp count]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { SearchTableCell *cell = [tableView dequeueReusableCellWithIdentifier:@"SearchTableCellId" forIndexPath:indexPath]; NSDictionary *dict; if (self.isFiltered) { NSArray *arrayPriceListAllKeys = [self.dictListFiltered allKeys]; NSArray *arrayPrice = [self.dictListFiltered objectForKey:[arrayPriceListAllKeys objectAtIndex:indexPath.section]]; dict = [arrayPrice objectAtIndex:indexPath.row]; } else { NSArray *arrayPriceListAllKeys = [self.dictList allKeys]; NSArray *arrayPrice = [self.dictList objectForKey:[arrayPriceListAllKeys objectAtIndex:indexPath.section]]; dict = [arrayPrice objectAtIndex:indexPath.row]; } cell.lblBarCode.text = [[dict objectForKey:@"APNBARCODE"] objectForKey:@"text"]; cell.lblPackDescription.text = [[dict objectForKey:@"PACKDESCRIPTION"] objectForKey:@"text"]; cell.lblProduct.text = [[dict objectForKey:@"PRODUCT"] objectForKey:@"text"]; cell.lblProductName.text = [[dict objectForKey:@"PRODUCTNAME"] objectForKey:@"text"]; return cell; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { if (self.isFiltered) { return [[self.dictListFiltered allKeys] count]; } else { return [[self.dictList allKeys] count]; } } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { NSString *price = @""; if (self.isFiltered) { price = [[self.dictListFiltered allKeys] objectAtIndex:section]; } else { price = [[self.dictList allKeys] objectAtIndex:section]; } return price; } - (CGFloat) tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section { return 50.0; } - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { NSString *sectionTitle = [self tableView:tableView titleForHeaderInSection:section]; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(8, 8, self.tablView.frame.size.width - 16, 30)]; //If you add a bit to x and decrease y, it will be more in line with the tableView cell (that is in iPad and landscape) label.backgroundColor = [UIColor clearColor]; label.textColor = [UIColor whiteColor]; label.shadowColor = [UIColor whiteColor]; label.shadowOffset = CGSizeMake(0.5, 0.5); label.font = [UIFont boldSystemFontOfSize:18]; label.text = sectionTitle; // Create header view and add label as a subview UIView *viewHeader = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.tablView.frame.size.width, 50)]; viewHeader.backgroundColor = [UIColor colorWithRed:0.4 green:0.4 blue:0.4 alpha:1]; [viewHeader addSubview:label]; return viewHeader; } #pragma mark - SearchBar Delegates - (void)updateSearchResults { //You can use the below commented code in case you need an exact match of the PRODUCT value text you entered in search bar /* NSMutableArray *searchResults = [self.arrayList mutableCopy]; NSString *strippedString = [searchText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"PRODUCT.text==[c] %@", strippedString]; searchResults = [[searchResults filteredArrayUsingPredicate:predicate] mutableCopy]; // hand over the filtered results to our search results table self.arrayFilteredList = searchResults; //NSLog(@"%@", self.arrayFilteredPriceList); [self groupXMLinSectionsWithArray:self.arrayFilteredList]; */ //Below code searches depending on Product / Product Name / APNBarCode values NSString *searchText = self.searchBr.text; NSMutableArray *searchResults = [self.arrayList mutableCopy]; NSString *strippedString = [searchText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; NSArray *searchItems = nil; if (strippedString.length > 0) { searchItems = [strippedString componentsSeparatedByString:@" "]; } NSMutableArray *andMatchPredicates = [NSMutableArray array]; for (NSString *searchString in searchItems) { NSMutableArray *searchItemsPredicate = [NSMutableArray array]; // Below we use NSExpression represent expressions in our predicates. // NSPredicate is made up of smaller, atomic parts: two NSExpressions (a left-hand value and a right-hand value) // Product NSExpression *lhsProduct = [NSExpression expressionForKeyPath:@"PRODUCT.text"]; NSExpression *rhsProduct = [NSExpression expressionForConstantValue:searchString]; NSPredicate *finalPredicateProduct = [NSComparisonPredicate predicateWithLeftExpression:lhsProduct rightExpression:rhsProduct modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption]; [searchItemsPredicate addObject:finalPredicateProduct]; // Product Name NSExpression *lhsProductName = [NSExpression expressionForKeyPath:@"PRODUCTNAME.text"]; NSExpression *rhsProductName = [NSExpression expressionForConstantValue:searchString]; NSPredicate *finalPredicateProductName = [NSComparisonPredicate predicateWithLeftExpression:lhsProductName rightExpression:rhsProductName modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption]; [searchItemsPredicate addObject:finalPredicateProductName]; // APN Bar Code NSExpression *lhsAPNBarCode = [NSExpression expressionForKeyPath:@"APNBARCODE.text"]; NSExpression *rhsAPNBarCode = [NSExpression expressionForConstantValue:searchString]; NSPredicate *finalPredicateAPNBarCode= [NSComparisonPredicate predicateWithLeftExpression:lhsAPNBarCode rightExpression:rhsAPNBarCode modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption]; [searchItemsPredicate addObject:finalPredicateAPNBarCode]; // AVERAGECOST NSExpression *lhsPACKDESCRIPTION = [NSExpression expressionForKeyPath:@"PACKDESCRIPTION.text"]; NSExpression *rhsPACKDESCRIPTION = [NSExpression expressionForConstantValue:searchString]; NSPredicate *finalPredicatePACKDESCRIPTIONt = [NSComparisonPredicate predicateWithLeftExpression:lhsPACKDESCRIPTION rightExpression:rhsPACKDESCRIPTION modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption]; [searchItemsPredicate addObject:finalPredicatePACKDESCRIPTIONt]; // at this OR predicate to our master AND predicate NSCompoundPredicate *orMatchPredicates = [NSCompoundPredicate orPredicateWithSubpredicates:searchItemsPredicate]; [andMatchPredicates addObject:orMatchPredicates]; } // match up the fields of the Product object NSCompoundPredicate *finalCompoundPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:andMatchPredicates]; searchResults = [[searchResults filteredArrayUsingPredicate:finalCompoundPredicate] mutableCopy]; // hand over the filtered results to our search results table self.arrayFilteredList = searchResults; //NSLog(@"%@", self.arrayFilteredPriceList); [self groupXMLinSectionsWithArray:self.arrayFilteredList]; } //This method gets called when user starts entering text in search bar - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { if (searchText.length == 0) { self.isFiltered = NO; [self.dictList removeAllObjects]; [self groupXMLinSectionsWithArray:self.arrayList]; [self.tablView reloadData]; } else { self.isFiltered = YES; self.arrayFilteredList = [NSMutableArray new]; [self.dictListFiltered removeAllObjects]; [self updateSearchResults]; } } - (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar { [searchBar resignFirstResponder]; [self.dictList removeAllObjects]; [self groupXMLinSectionsWithArray:self.arrayList]; [self.tablView reloadData]; } - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar { [searchBar resignFirstResponder]; [self.tablView reloadData]; } @end
上面的代码逻辑是基于包含在数组中的字典的json，我们根据PRICELISTCATEGORY值创build节
[ { "PRODUCT": { "text": "GELDCMFRAME" }, "PRODUCTMAJORGROUP": { "text": "IC" }, "PRICELISTCATEGORY": { "text": "GELDISP" }, "APNBARCODE": { "text": "931000" }, "PACKDESCRIPTION": { "text": "Some Description" }, "PRODUCTNAME": { "text": "Description" } and so on }, and so on ]
请参阅以下屏幕截图以查找search 