My tableView methods have poor performance - objective-c

Question

I have two problems (in fact one - my code sucks):
My table takes a long time to load(about 5 seconds)
She is dreadfully poor
Any ideas?
My tableView methods:
// Table
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
RefreshDelegate *RefreshProtocol = [[RefreshDelegate new] autorelease];
RefreshProtocol.delegate = self;
return [[RefreshProtocol returnDataForTable] count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
RefreshDelegate *RefreshProtocol = [[RefreshDelegate new] autorelease];
RefreshProtocol.delegate = self;
NSArray *curent = [self curent:section];
return [curent count];
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
RefreshDelegate *RefreshProtocol = [[RefreshDelegate new] autorelease];
RefreshProtocol.delegate = self;
return [[[RefreshProtocol returnDataForTable] allKeys] objectAtIndex:section];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] autorelease];
}
NSArray *curent = [self curent:indexPath.section];
cell.textLabel.text = [curent objectAtIndex:indexPath.row];
return cell;
}
- (NSArray*)curent:(NSInteger)index {
RefreshDelegate *RefreshProtocol = [[RefreshDelegate new] autorelease];
RefreshProtocol.delegate = self;
NSArray *keys = [[RefreshProtocol returnDataForTable] allKeys];
NSString *curentKey = [keys objectAtIndex:index];
NSArray *curent = [[RefreshProtocol returnDataForTable] objectForKey:curentKey];
return curent;
}
My RefreshProtocol methods:
#define MaxCountPair 7
-(NSDictionary *)returnDataForTable{
NSMutableArray *day_1 = [NSMutableArray arrayWithCapacity:MaxCountPair];
NSMutableArray *day_2 = [NSMutableArray arrayWithCapacity:MaxCountPair];
NSMutableArray *day_3 = [NSMutableArray arrayWithCapacity:MaxCountPair];
NSMutableArray *day_4 = [NSMutableArray arrayWithCapacity:MaxCountPair];
NSMutableArray *day_5 = [NSMutableArray arrayWithCapacity:MaxCountPair];
NSMutableArray *day_6 = [NSMutableArray arrayWithCapacity:MaxCountPair];
// Analysis db and write array today
NSArray *array = [SQLiteAccess selectManyRowsWithSQL:#"select * from schedule"];
for (int i = 0; i < [array count]; i++) {
NSDictionary *dictionary = [array objectAtIndex:i];
if ([self checkOverlapDigit:[[[NSUserDefaults standardUserDefaults] valueForKey:#"numberWeek"] objectForKey:#"numberWeek"]:[dictionary objectForKey:#"week"]] && [self checkOverlapDigit:[self subgroupToInt]:[dictionary objectForKey:#"subgroup"]]) {
if ([self checkDay:[[dictionary objectForKey:#"day"] intValue]]) {
[day_1 addObject:[dictionary objectForKey:#"subject"]];
}
else {
if ([self checkDay:[[dictionary objectForKey:#"day"] intValue] - 1]) {
[day_2 addObject:[dictionary objectForKey:#"subject"]];
}
else {
if ([self checkDay:[[dictionary objectForKey:#"day"] intValue] - 2]) {
[day_3 addObject:[dictionary objectForKey:#"subject"]];
}
else {
if ([self checkDay:[[dictionary objectForKey:#"day"] intValue] - 3]) {
[day_4 addObject:[dictionary objectForKey:#"subject"]];
}
else {
if ([self checkDay:[[dictionary objectForKey:#"day"] intValue] - 4]) {
[day_5 addObject:[dictionary objectForKey:#"subject"]];
}
else {
if ([self checkDay:[[dictionary objectForKey:#"day"] intValue] - 5]) {
[day_6 addObject:[dictionary objectForKey:#"subject"]];
}
}
}
}
}
}
}
}
NSDictionary *days = [NSDictionary dictionaryWithObjectsAndKeys:day_1, #"1", day_2, #"2", day_3, #"3", day_4, #"4", day_5, #"5", day_6, #"6", nil];
return days;
}
-(NSString *)removeAllButDigit:(NSString *)originalString{
// Remove all but digit
NSMutableString *strippedString = [NSMutableString
stringWithCapacity:originalString.length];
NSScanner *scanner = [NSScanner scannerWithString:originalString];
NSCharacterSet *numbers = [NSCharacterSet
characterSetWithCharactersInString:#"1234"];
while ([scanner isAtEnd] == NO) {
NSString *buffer;
if ([scanner scanCharactersFromSet:numbers intoString:&buffer]) {
[strippedString appendString:buffer];
} else {
[scanner setScanLocation:([scanner scanLocation] + 1)];
}
}
return strippedString;
}
-(BOOL)checkDay:(NSInteger)day{
NSString *currentDay = nil;
switch (day) {
case 1:
currentDay = NSLocalizedString(#"_monday", nil);
break;
case 2:
currentDay = NSLocalizedString(#"_tuesday", nil);
break;
case 3:
currentDay = NSLocalizedString(#"_wednesday", nil);
break;
case 4:
currentDay = NSLocalizedString(#"_thursday", nil);
break;
case 5:
currentDay = NSLocalizedString(#"_friday", nil);
break;
case 6:
currentDay = NSLocalizedString(#"_saturday", nil);
break;
default:
break;
}
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"EEEE"];
if ([currentDay isEqualToString:[dateFormatter stringFromDate:[NSDate date]]]) {
return YES;
}
return NO;
}
-(BOOL)checkOverlapDigit:(NSString *)smallerString:(NSString *)largerString{
if ([largerString isEqualToString:#"0"]) {
return YES;
}
NSInteger intSmaller = [[self removeAllButDigit:smallerString] intValue];
NSInteger intLarger = [[self removeAllButDigit:largerString] intValue];
while (1) {
if (intLarger % 10 != 0) {
NSInteger sedimentWeek = intLarger % 10;
if (sedimentWeek == intSmaller) {
return YES;
}
intLarger /= 10;
}
else {
if (intLarger / 10 != 0) {
intLarger /= 10;
if (intLarger == intSmaller) {
return YES;
}
}
else {
return NO;
}
}
}
}
-(NSString *)subgroupToInt{
if ([[[NSUserDefaults standardUserDefaults]objectForKey:#"subgroupValue"] isEqualToString: #"subgroupValue1"]) {
return #"1";
}
else
if ([[[NSUserDefaults standardUserDefaults]objectForKey:#"subgroupValue"] isEqualToString: #"subgroupValue2"]) {
return #"2";
}
else
if ([[[NSUserDefaults standardUserDefaults]objectForKey:#"subgroupValue"] isEqualToString: #"subgroupValue3"]) {
return #"3";
}
return #"4";
}
And SQLiteAccess class: .h, .m

Answer 1

For starting... you can (you have) to create you object only once!! (in the constructor? In -viewDidLoad ?)
Then in the tableView delegate methods you access your (unique) object.
EDIT:
Adds a property in your class:
#property (nonatomic, strong) RefreshDelegate* refreshProtocol;
In your -viewDidLoad method add
-(void)viewDidLoad
{
[super viewDidLoad];
self.refreshProtocol = [[RefreshDelegate new] autorelease];
self.refreshProtocol.delegate = self;
}
Now:
- (NSArray*)curent:(NSInteger)index {
NSArray *keys = [[self.refreshProtocol returnDataForTable] allKeys];
NSString *curentKey = [keys objectAtIndex:index];
NSArray *curent = [[self.refreshProtocol returnDataForTable] objectForKey:curentKey];
return curent;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSArray *curent = [self curent:section];
return [curent count];
}
... and correct the other methods...