问题是当我尝试按放大镜（镜头）并且索引转到C而不是C时我有错误。编写的代码如下：
///
// RBook.h
// ObjBook
//
// Created by pan on 24/08/16.
// Copyright © 2016 pan. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface RBook : NSObject
{
}
@property (nonatomic,assign) int ID;
@property (nonatomic,strong) NSString *ISBN;
@property (nonatomic,strong) NSString *Code;
@property (nonatomic,strong) NSString *RBMDate;
@property (nonatomic,strong) NSString *Category;
@property (nonatomic,strong) NSString *FTitle;
@property (nonatomic,strong) NSString *FSubTitle;
@property (nonatomic,strong) NSString *GTitle;
@property (nonatomic,strong) NSString *GSubTitle;
@property (nonatomic,strong) NSString *Authors;
@property (nonatomic,strong) NSString *Publisher;
@property (nonatomic,strong) NSString *Cover;
@property (nonatomic,strong) NSString *CovPhoto;
@property NSInteger section;
@end
//
// RBooks.m
// ObjBook
//
// Created by pan on 24/08/16.
// Copyright © 2016 pan. All rights reserved.
//
#import "RBook.h"
@implementation RBook
@synthesize ID;
@synthesize ISBN;
@synthesize Code;
@synthesize RBMDate;
@synthesize Category;
@synthesize FTitle;
@synthesize FSubTitle;
@synthesize GTitle;
@synthesize GSubTitle;
@synthesize Authors;
@synthesize Publisher;
@synthesize Cover;
@synthesize CovPhoto;
-(NSString *) getName
{
return [NSString stringWithFormat:@"%d %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@",self.ID,self.ISBN,self.Code,self.RBMDate,self.Category,self.FTitle,self.FSubTitle,self.GTitle,self.GSubTitle,self.Authors,self.Publisher,self.Cover,self.CovPhoto];
}
@end
//
// RBooksTableViewController.h
// MyRBooks
//
// Created by pan on 30/08/16.
// Copyright © 2016 pan. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "FMDBDataAccess.h"
@interface RBooksTableViewController : UITableViewController<UISearchBarDelegate , UITableViewDataSource , UITableViewDelegate> {
NSString *tID;
NSString *tFTitle;
NSString *tGTitle;
NSString *tAuthors;
NSString *tPublisher;
NSString *found;
NSString *from;
}
@property (nonatomic,strong) NSMutableArray *books;
@property (nonatomic,strong) NSMutableArray *filteredbooks;
@property (weak, nonatomic) IBOutlet UISearchBar *mysearchBar;
@property (nonatomic, assign) bool isFiltered;
//-(void) populateBooks;
@end
#import "RBooksTableViewController.h"
#import "RBooksTableViewCell.h"
#import "FMDBDataAccess.h"
#import "BooksDetailsViewController.h"
#import "RBook.h"
@implementation RBooksTableViewController
@synthesize books;
@synthesize filteredbooks;
@synthesize mysearchBar;
@synthesize isFiltered;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
mysearchBar.delegate = (id)self;
tID = @"A/A :";
tFTitle = @"FOREIGN TITLE :";
tGTitle = @"GREEK TITLE :";
tAuthors = @"AUTHORS. :";
tPublisher = @"PUBLISHERS :";
// [self populateBooks];
self.books = [NSMutableArray arrayWithCapacity:1];
NSMutableArray *booksTemp;
// Get the books array from the database
self.books = [[NSMutableArray alloc] init];
FMDBDataAccess *db = [[FMDBDataAccess alloc] init];
booksTemp = [db getBooks];
UILocalizedIndexedCollation *indexedCollation =
[UILocalizedIndexedCollation currentCollation];
// Iterate over the products, populating their section number
for (RBook *therbook in booksTemp) {
NSInteger section = [indexedCollation sectionForObject:therbook
collationStringSelector:@selector(FTitle)];
therbook.section = section;
// NSLog(@" section is %d" , section);
}
// Get the count of the number of sections
NSInteger sectionCount = [[indexedCollation sectionTitles] count];
// NSLog(@" sectionCount is %d" , sectionCount);
// Create an array to hold the sub arrays
NSMutableArray *sectionsArray = [NSMutableArray
arrayWithCapacity:sectionCount];
// Iterate over each section, creating each sub array
for (int i=0; i<=sectionCount; i++) {
NSMutableArray *singleSectionArray = [NSMutableArray
arrayWithCapacity:1];
[sectionsArray addObject:singleSectionArray];
}
// Iterate over the products putting each product into the correct sub-array
for (RBook *therbook in booksTemp) {
[(NSMutableArray *)[sectionsArray objectAtIndex:therbook.section]
addObject:therbook];
}
// Iterate over each section array to sort the items in the section
for (NSMutableArray *singleSectionArray in sectionsArray) {
// Use the UILocalizedIndexedCollation sortedArrayFromArray: method to
// sort each array
NSArray *sortedSection = [indexedCollation
sortedArrayFromArray:singleSectionArray
collationStringSelector:@selector(FTitle)];
[self.books addObject:sortedSection];
// NSLog(@" sortedCollection is %@" , sortedSection);
}
}
- (void)viewDidUnload
{
// [self setSearchBar:nil];
[super viewDidUnload];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (tableView == self.tableView)
{
return [books count];
}
return 1;
}
NSIndexPath *currentSelection;
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
currentSelection = indexPath;
[self showDetailsForIndexPath:indexPath];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
int rowCount;
if(self.isFiltered)
{
rowCount = filteredbooks.count;
} else
rowCount = [[books objectAtIndex:section] count];
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
RBooksTableViewCell *cell = (RBooksTableViewCell *)[self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
cell = [[RBooksTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
RBook* rbook;
if(isFiltered)
rbook = [filteredbooks objectAtIndex:[indexPath row]];
else
// rbook = [books objectAtIndex:[indexPath row]];
rbook = [[books objectAtIndex:[indexPath section]] objectAtIndex:[indexPath row]];
// cell.textLabel.font = [UIFont systemFontOfSize: 17.0]; εχουν μπει στο RBooksTableViewCell.m
// cell.imageView.bounds = CGRectMake(15,17,80,128); εχουν μπει στο RBooksTableViewCell.m
// [[cell textLabel] setText:[NSString stringWithFormat:@"%@ %@\r %@ %@ ", tFirstName,customer.firstName,tLastName,customer.lastName]];
// cell.IDlabel!.text = "\(books.ID_Lbl)"
[[cell textLabel] setText:[NSString stringWithFormat:@"%@ %d\r %@ %@\r %@ %@\r %@ %@\r %@ %@",tID,rbook.ID,tFTitle,rbook.FTitle ,tGTitle,rbook.GTitle,tAuthors,rbook.Authors,tPublisher,rbook.Publisher]];
[[cell imageView] setImage:[UIImage imageNamed:rbook.CovPhoto]];
return cell;
}
-(void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
// create our UIImages
UIImage * defaultBG = [UIImage imageNamed:@"wood1.jpg"];
UIImage * selectedBG = [UIImage imageNamed:@"marble2.jpg"];
// Create UIImageView
UIImageView * defaultBGView = [[UIImageView alloc] initWithImage:defaultBG];
UIImageView * selectedBGView = [[UIImageView alloc] initWithImage:selectedBG];
// set the UIImageView
cell.backgroundColor = [UIColor clearColor];
cell.backgroundView = defaultBGView;
// change the background for the selectedview
cell.selectedBackgroundView = selectedBGView;
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[self.tableView resignFirstResponder];
}
#pragma mark - Table view delegate
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if(searchText.length==0)
{
isFiltered = FALSE;
}else
{
isFiltered = TRUE;
filteredbooks = [[NSMutableArray alloc] init];
for(RBook* rbook in books)
{
NSRange ftitleRange = [rbook.FTitle rangeOfString:searchText options:NSCaseInsensitiveSearch];
NSRange gtitleRange = [rbook.GTitle rangeOfString:searchText options:NSCaseInsensitiveSearch];
NSRange authorsRange = [rbook.Authors rangeOfString:searchText options:NSCaseInsensitiveSearch];
NSRange publisherRange = [rbook.Publisher rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(ftitleRange.location != NSNotFound || gtitleRange.location != NSNotFound || authorsRange.location != NSNotFound || publisherRange.location != NSNotFound )
{
[filteredbooks addObject:rbook];
}
}
}
found = @"THEY FOUND FOR:";
from = @" / ";
self.title = [NSString stringWithFormat:@"%@ %@ %lu %@ %lu",found , searchText ,(unsigned long)filteredbooks.count ,from , (unsigned long)books.count];
[self. tableView reloadData];
}
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
[self showDetailsForIndexPath:indexPath];
}
//-(void) populateBooks
//{
// self.books = [[NSMutableArray alloc] init];
//
// FMDBDataAccess *db = [[FMDBDataAccess alloc] init];
//
// self.books = [db getBooks];
//}
-(void) showDetailsForIndexPath:(NSIndexPath*)indexPath
{
[self.mysearchBar resignFirstResponder];
BooksDetailsViewController* vc = [self.storyboard instantiateViewControllerWithIdentifier:@"BooksDetailsViewController"];
RBook* rbook;
if(isFiltered)
{
rbook = [filteredbooks objectAtIndex:indexPath.row];
}
else
{
// rbook = [books objectAtIndex:indexPath.row];
rbook = [[books objectAtIndex:[indexPath section]] objectAtIndex:[indexPath row]];
}
vc.rbook = rbook;
[self.navigationController pushViewController:vc animated:true];
}
- (NSString *)tableView:(UITableView *)tableView
titleForHeaderInSection:(NSInteger)section {
// Make sure that the section will contain some data
if ([[books objectAtIndex:section] count] > 0) {
// If it does, get the section title from the
// UILocalizedIndexedCollation object
return [[[UILocalizedIndexedCollation currentCollation] sectionTitles]
objectAtIndex:section];
}
return nil;
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
if (tableView == self.searchDisplayController.searchResultsTableView) {
return nil;
} else {
NSMutableArray *retval = [NSMutableArray arrayWithObject:UITableViewIndexSearch];
[retval addObjectsFromArray:[[UILocalizedIndexedCollation currentCollation] sectionIndexTitles]];
return retval;
}
}
- (NSInteger)tableView:(UITableView *)tableView
sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
return [[UILocalizedIndexedCollation currentCollation]
sectionForSectionIndexTitleAtIndex:index];
//}
}
@end
问题出现在RBooksTableViewController.m