Filtering a TableView with sections - ios

Question

I try to make a little program to learn more about searching a tableview about a searchbar. Meanwhile i'm in the third week trying to do this. I found many examples in different ways in the internet. The most with a searchdisplaycontroller but this way is only for a viewcontroller. i prefer a way that also works with an uiview and so i use the searchbar delegatemethod to filter my data dictionary. Normally i try as long i get handle such things by myself. But this is my nemesis. I really can't find a way to get this problem solved. Can anyone help me with my code?
Here it is.
#import "FilterDemoTableViewController.h"
#implementation FilterDemoTableViewController
#synthesize filteredTableData;
#synthesize searchBar;
#synthesize isFiltered;
#synthesize tableContents;
#synthesize Keys;
- (void)viewDidLoad
{
[super viewDidLoad];
searchBar.delegate = (id)self;
//-----------------------My TableView Data ------------------------------
NSArray *array1 = [[NSArray alloc]initWithObjects:#"Berlin",#"München",#"Stuttgart",nil];
NSArray *array2 = [[NSArray alloc]initWithObjects:#"Paris",#"Bordeaux",#"Marseille",#"Toulouse",nil];
NSArray *array3 = [[NSArray alloc]initWithObjects:#"London",#"Portsmouth",#"Oxford",#"York",#"Dover",nil];
NSArray *array4 = [[NSArray alloc]initWithObjects:#"Rom" ,#"Genua",#"Mailand",#"Florenz",nil];
NSArray *array5 = [[NSArray alloc]initWithObjects:#"Madrid",#"Barcelona",#"Toledo",#"Saragossa",#"Pamplona",nil];
NSDictionary *dictionary =[[NSDictionary alloc]initWithObjectsAndKeys:array1,#"Deutschland",array2,#"Frankreich",array3,#"Großbritannien",array4,#"Italien",array5,#"Spanien",nil];
self.tableContents = dictionary;
self.Keys = [self.tableContents allKeys];
//--------------------------------------------------------------------------
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (self.isFiltered) {
return [filteredTableData count];
} else {
return [Keys count];}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSArray *listData =[self.tableContents objectForKey:[self.Keys objectAtIndex:section]];
int rowCount;
if(self.isFiltered)
rowCount = filteredTableData.count;
else
rowCount = [listData count];
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
NSDictionary* sectionDictionary;
if (isFiltered) {
sectionDictionary = [filteredTableData objectAtIndex:indexPath.section];
} else {
sectionDictionary = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
}
NSArray* sectionEntries = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
cell.textLabel.text = [sectionEntries objectAtIndex:indexPath.row];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
-(void)searchBar:(UISearchBar*)searchBar textDidChange:(NSString*)text
{
if(text.length == 0)
{
isFiltered = FALSE;
}
else
{
//I think here is something wrong but i don't know what
isFiltered = true;
filteredTableData = [[NSMutableArray alloc] init];
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
for (NSDictionary *dictionary in tableContents) //dictionary read
{
NSArray *array = [dictionary objectForKey:Keys]; //section of dictionary read
[searchArray addObjectsFromArray:array];
}
for (NSString *sTemp in searchArray)
{
NSRange titleResultsRange = [sTemp rangeOfString:text options:NSCaseInsensitiveSearch];
if (titleResultsRange.length != 0)
[filteredTableData addObject:sTemp];
}
}
[self.tableView reloadData];
}
- (void)viewDidUnload{
[self setSearchBar:nil];
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end

Answer 1

Now i post a complete refreshed code. I tested each component of the code step by step. It works and the search is also fine (in a UITableViewController). But in this example the hole code is in a UIView. The reason, on this way it is possible to create non full-size tableviews and instanzes of tableviews. Much better for a clear Viewcontroller. I know that an UIView has no method like this reloadData but it is necessary.
Near the code end you can see the problem line. And for this last step i have no idea how i can solve this. [self.tableView reloadData];
#import "TableView.h"
#import <QuartzCore/QuartzCore.h>
#interface TableView ()
#end
#implementation TableView
#synthesize delegate;
#synthesize dropDownHeight;
#synthesize labelText;
#synthesize enabled;
#synthesize tableContents;
#synthesize Keys;
#synthesize searchBar;
#synthesize isFiltered;
#synthesize filteredTableData;
- (void)__show {
viewControl.alpha = 0.0f;
UIWindow *mainWindow = [[UIApplication sharedApplication] keyWindow];
[mainWindow addSubview:viewControl];
[UIView animateWithDuration:0.3f
animations:^{
viewControl.alpha = 1.0f;
}
completion:^(BOOL finished) {}];
}
- (void)__hide {
[UIView animateWithDuration:0.2f
animations:^{
viewControl.alpha = 0.0f;
}
completion:^(BOOL finished) {
[viewControl removeFromSuperview];
}];
}
- (void) setLabelText:(NSString *)_labelText{
[button setTitle:labelText forState:UIControlStateNormal];
}
- (void) setEnable:(BOOL)_enabled{
enabled = _enabled;
[button setEnabled:_enabled];
}
- (void) setArrayData:(NSArray *)_arrayData{
[table reloadData];
}
- (void) buttonPressed{
[self __show];
}
- (void) controlPressed{
//[viewControl removeFromSuperview];
[self __hide];
}
- (id) initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(10, 0, 280, 30)];
[button setTitle:#"--Auswahl--" forState:UIControlStateNormal];
[button setBackgroundImage:[UIImage imageNamed:#"combo_bg.png"] forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button addTarget:self action:#selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[button.titleLabel setFont:[UIFont fontWithName:#"Helvetica" size:14]];
[self addSubview:button];
dropDownHeight = 706;
viewControl = [[UIControl alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
[viewControl addTarget:self action:#selector(controlPressed) forControlEvents:UIControlEventTouchUpInside];
CGFloat x = self.frame.origin.x;
CGFloat y = (viewControl.frame.size.height - dropDownHeight)/2;
table = [[UITableView alloc] initWithFrame:CGRectMake(x, y, frame.size.width, dropDownHeight) style:UITableViewStyleGrouped];
table.dataSource = self;
table.delegate = self;
searchBar = [[UISearchBar alloc] init];
[searchBar sizeToFit];
searchBar.delegate = (id)self;
table.tableHeaderView = searchBar;
CALayer *layer = table.layer;
layer.masksToBounds = YES;
layer.cornerRadius = 2.0f;
layer.borderWidth = 1.0f;
[layer setBorderColor:[UIColor darkGrayColor].CGColor];
[viewControl addSubview:table];
CGAffineTransform rotateTable = CGAffineTransformMakeRotation(M_PI_2);
table.transform = rotateTable;
table.frame = CGRectMake(-2, -1, table.frame.size.width, table.frame.size.height);
UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"gradientBackground.png"]];
[tempImageView setFrame:self->table.frame];
table.backgroundView = tempImageView;
//----------------------- TableView Daten ------------------------------
NSArray *array1 = [[NSArray alloc]initWithObjects:#"Berlin",#"München",#"Stuttgart",#"Hamburg",nil];
NSArray *array2 = [[NSArray alloc]initWithObjects:#"Paris",#"Bordeaux",#"Marseille",#"Toulouse",nil];
NSArray *array3 = [[NSArray alloc]initWithObjects:#"London",#"Portsmouth",#"Oxford",#"York",#"Dover",nil];
NSArray *array4 = [[NSArray alloc]initWithObjects:#"Rom" ,#"Genua",#"Mailand",#"Florenz",nil];
NSArray *array5 = [[NSArray alloc]initWithObjects:#"Madrid",#"Barcelona",#"Toledo",#"Saragossa",#"Pamplona",nil];
NSDictionary *dictionary =[[NSDictionary alloc]initWithObjectsAndKeys:array1,#"Deutschland",array2,#"Frankreich",array3,#"Großbritannien",array4,#"Italien",array5,#"Spanien",nil];
self.tableContents = dictionary;
self.Keys = [self.tableContents allKeys];
// ---------------------------------------------------------------------
}
return self;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
if ([self tableView:tableView titleForHeaderInSection:section] != nil) {
return 40;
}
else {
return 0;
}
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
NSString *sectionTitle = [self tableView:tableView titleForHeaderInSection:section];
if (sectionTitle == nil) {
return nil;
}
// Create label with section title
UILabel *label = [[UILabel alloc] init];
label.frame = CGRectMake(20, 6, 300, 30);
label.backgroundColor = [UIColor clearColor];
label.textColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0];
label.shadowColor = [UIColor grayColor];
label.shadowOffset = CGSizeMake(0.0, 1.0);
label.font = [UIFont boldSystemFontOfSize:16];
label.text = sectionTitle;
// Create header view and add label as a subview
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
[view addSubview:label];
return view;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 60.0;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection: (NSInteger)section {
return [self.Keys objectAtIndex:section];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (self.isFiltered)
{
return 1;
} else {
return [Keys count];}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
int rowCount;
if(self.isFiltered)
{
rowCount = [filteredTableData count];
}
else
{
NSArray *listData =[self.tableContents objectForKey:[self.Keys objectAtIndex:section]];
rowCount = [listData count];
}
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *SimpleTableIdentifier = #"SimpleTableIdentifier";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: SimpleTableIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SimpleTableIdentifier];
}
if (isFiltered)
{
NSString * stadt = [filteredTableData objectAtIndex:indexPath.row];
cell.textLabel.text = stadt;
}
else
{
NSDictionary* sectionDictionary;
sectionDictionary = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
NSArray* sectionEntries = [self.tableContents objectForKey:[self.Keys objectAtIndex:indexPath.section]];
cell.textLabel.text = [sectionEntries objectAtIndex:indexPath.row];
}
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSArray *listData =[self.tableContents objectForKey:[self.Keys objectAtIndex:[indexPath section]]];
NSUInteger row = [indexPath row];
NSString *rowValue = [listData objectAtIndex:row];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
selectedIndex = [indexPath row];
[self __hide];
[button setTitle:[[NSString alloc] initWithFormat:rowValue] forState:UIControlStateNormal];
}
- (NSInteger) selectedIndex {
return selectedIndex;
}
-(void)searchBar:(UISearchBar*)searchBar textDidChange:(NSString*)text
{
if(text.length == 0)
{
isFiltered = FALSE;
}
else
{
isFiltered = true;
[filteredTableData removeAllObjects];
for (NSString* key in self.tableContents)
{
NSArray *staedte = [self.tableContents objectForKey:key];
for (NSString *stadt in staedte)
{
NSRange titleResultsRange = [stadt rangeOfString:text options:NSCaseInsensitiveSearch];
if (titleResultsRange.length != 0)
{
[filteredTableData addObject:stadt];
}
}
}
}
[self.tableView reloadData]; //Here is the error
}
-(void)didChangeTableViewValue:(TableView *)TableView selectedIndex:(NSInteger)selectedIndex {
}
#end