1
我一直在关注一个教程来实现搜索栏。从表中推送不同视图
但是，我似乎无法推送不同的意见。这是我的didsSelectRowAtIndexPath外观。
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *selectedCountry = nil;
if(searching)
selectedCountry = [copyListOfItems objectAtIndex:indexPath.row];
else {
NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"Countries"];
selectedCountry = [array objectAtIndex:indexPath.row];
}
//Initialize the detail view controller and display it.
if ([[listOfItems objectAtIndex:indexPath.row] isEqual:@"neon"]){
Neon *abo = [[Neon alloc] initWithNibName:@"Neon" bundle:nil];
//dvController.selectedCountry = selectedCountry;
[self.navigationController pushViewController:abo animated:YES];
[abo release];
}
}
这里是debuger消息当我点击霓虹灯： 2010-05-09 08：47：27.516 iTeachU [3821：307] *终止应用程序由于未捕获的异常 'NSRangeException'，究其原因： '* - [NSMutableArray objectAtIndex：]：索引60超越范围[0..0]' ***第一次调用时调用堆栈： 抛出'NSException'后终止调用 程序接收信号：“SIGABRT” 。
如果任何人有办法推动基于单元格文本的意见，将不胜感激。由于
编辑整个.M
- (void)viewDidLoad {
[super viewDidLoad];
listOfItems = [[NSMutableArray alloc] init];
NSArray *ElementsArray = [NSArray arrayWithObjects:@"Actinium",
@"Aluminium",
@"Americium",
@"Antimony",
@"Argon",
@"Arsenic",
@"Astatine",
@"Barium",
@"Berkelium",
@"Beryllium",
@"Bismuth",
@"Bohrium",
@"Boron",
@"Bromine",
@"Cadmium",
@"Cesium",
@"Calcium",
@"Californium",
@"Carbon",
@"Cerium",
@"Chlorine",
@"Chromium",
@"Cobalt",
@"Copper",
@"Curium",
@"Darmstadtium",
@"Dubnium",
@"Dysprosium",
@"Einsteinium",
@"Erbium",
@"Europium",
@"Fermium",
@"Fluorine",
@"Francium",
@"Gadolinium",
@"Gallium",
@"Germanium",
@"Gold",
@"Hafnium",
@"Hassium",
@"Helium",
@"Holmium",
@"Hydrogen",
@"Indium",
@"Iodine",
@"Iridium",
@"Iron",
@"Krypton",
@"Lanthanum",
@"Lawrencium",
@"Lead",
@"Lithium",
@"Lutetium",
@"Magnesium",
@"Manganese",
@"Meitnerium",
@"Mendelevium",
@"Mercury",
@"Molybdenum",
@"Neodymium",
@"neon",
@"Neptunium",
@"Nickel",
@"Niobium",
@"Nitrogen",
@"Nobelium",
@"Osmium",
@"Oxygen",
@"Palladium",
@"Phosphorus",
@"Platinum",
@"Plutonium",
@"Polonium",
@"Potassium ",
@"Praseodymium",
@"Promethium",
@"Protactinium",
@"Radium",
@"Radon",
@"Rhenium",
@"Rhodium",
@"Roentgenium",
@"Rubidium",
@"Ruthenium",
@"Rutherfordium",
@"Samarium",
@"Scandium",
@"Seaborgium",
@"Selenium",
@"Silicon",
@"Silver",
@"Sodium",
@"Strontium",
@"Sulfur",
@"Tantalum",
@"Technetium",
@"Tellurium",
@"Terbium",
@"Thallium",
@"Thorium",
@"Thulium",
@"Tin",
@"Titanium",
@"Tungsten",
@"Ununbium",
@"Ununhexium",
@"Ununoctium",
@"Ununpentium",
@"Ununquadium",
@"Ununseptium",
@"Ununtrium",
@"Uranium",
@"Vanadium",
@"Xenon",
@"Ytterbium",
@"Yttrium",
@"Zinc",
@"Zirconium", nil];
NSDictionary *ElementsDict = [NSDictionary dictionaryWithObject:ElementsArray forKey:@"Elements"];
[listOfItems addObject:ElementsDict];
//Initialize the copy array.
copyListOfItems = [[NSMutableArray alloc] init];
//Set the title
self.navigationItem.title = @"Elements";
//Add the search bar
self.tableView.tableHeaderView = searchBar;
searchBar.autocorrectionType = UITextAutocorrectionTypeNo;
searching = NO;
letUserSelectRow = YES;
}
-(IBAction) back:(id)sender{
[self.navigationController popViewControllerAnimated:NO];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#pragma mark -
#pragma mark Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (searching)
return 1;
else
return [listOfItems count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (searching)
return [copyListOfItems count];
else {
//Number of rows it should expect should be based on the section
NSDictionary *dictionary = [listOfItems objectAtIndex:section];
NSArray *array = [dictionary objectForKey:@"Elements"];
return [array count];
}
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if(searching)
return @"Search Results";
if(section == 0)
return @"Elements";
}
// Customize the appearance of table view cells.
- (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];
}
// Configure the cell...
if(searching)
cell.text = [copyListOfItems objectAtIndex:indexPath.row];
else {
//First get the dictionary object
NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"Elements"];
NSString *cellValue = [array objectAtIndex:indexPath.row];
cell.text = cellValue;
}
return cell;
}
- (NSIndexPath *)tableView :(UITableView *)theTableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if(letUserSelectRow)
return indexPath;
else
return nil;
}
- (void) searchBarTextDidBeginEditing:(UISearchBar *)theSearchBar {
//This method is called again when the user clicks back from teh detail view.
//So the overlay is displayed on the results, which is something we do not want to happen.
if(searching)
return;
//Add the overlay view.
if(ovController == nil)
ovController = [[OverlayViewController alloc] initWithNibName:@"OverlayView" bundle:[NSBundle mainBundle]];
CGFloat yaxis = self.navigationController.navigationBar.frame.size.height;
CGFloat width = self.view.frame.size.width;
CGFloat height = self.view.frame.size.height;
//Parameters x = origion on x-axis, y = origon on y-axis.
CGRect frame = CGRectMake(0, yaxis, width, height);
ovController.view.frame = frame;
ovController.view.backgroundColor = [UIColor grayColor];
ovController.view.alpha = 0.5;
ovController.rvController = self;
[self.tableView insertSubview:ovController.view aboveSubview:self.parentViewController.view];
searching = YES;
letUserSelectRow = NO;
self.tableView.scrollEnabled = NO;
//Add the done button.
self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemDone
target:self action:@selector(doneSearching_Clicked:)] autorelease];
}
- (void)searchBar:(UISearchBar *)theSearchBar textDidChange:(NSString *)searchText {
//Remove all objects first.
[copyListOfItems removeAllObjects];
if([searchText length] > 0) {
[ovController.view removeFromSuperview];
searching = YES;
letUserSelectRow = YES;
self.tableView.scrollEnabled = YES;
[self searchTableView];
}
else {
[self.tableView insertSubview:ovController.view aboveSubview:self.parentViewController.view];
searching = NO;
letUserSelectRow = NO;
self.tableView.scrollEnabled = NO;
}
[self.tableView reloadData];
}
- (void) searchBarSearchButtonClicked:(UISearchBar *)theSearchBar {
[self searchTableView];
}
- (void) searchTableView {
NSString *searchText = searchBar.text;
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
for (NSDictionary *dictionary in listOfItems)
{
NSArray *array = [dictionary objectForKey:@"Elements"];
[searchArray addObjectsFromArray:array];
}
for (NSString *sTemp in searchArray)
{
NSRange titleResultsRange = [sTemp rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (titleResultsRange.length > 0)
[copyListOfItems addObject:sTemp];
}
[searchArray release];
searchArray = nil;
}
- (void) doneSearching_Clicked:(id)sender {
searchBar.text = @"";
[searchBar resignFirstResponder];
letUserSelectRow = YES;
searching = NO;
self.navigationItem.rightBarButtonItem = nil;
self.tableView.scrollEnabled = YES;
[ovController.view removeFromSuperview];
[ovController release];
ovController = nil;
[self.tableView reloadData];
}
//重写以支持编辑表视图。 - （空）的tableView：（UITableView的*）的tableView commitEditingStyle：（UITableViewCellEditingStyle）editingStyle forRowAtIndexPath：（NSIndexPath *）indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
} */
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *selectedCountry = nil;
if(searching)
selectedCountry = [copyListOfItems objectAtIndex:indexPath.row];
else {
NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"Countries"];
selectedCountry = [array objectAtIndex:indexPath.row];
}
//Initialize the detail view controller and display it.
if ([[listOfItems objectAtIndex:indexPath.row] isEqual:@"neon"]){
Neon *abo = [[Neon alloc] initWithNibName:@"Neon" bundle:nil];
//dvController.selectedCountry = selectedCountry;
[self.navigationController pushViewController:abo animated:YES];
[abo release];
}
}
#pragma mark -
#pragma mark Memory management
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Relinquish ownership any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
// For example: self.myOutlet = nil;
}
- (void)dealloc {
[back release];
[tableView release];
[super dealloc];
}
@end
谢谢你的回应。我点击了第三项，得到这个： 2010-05-09 19：43：49.392 iTeachU [4674：307] listOfItems有1，访问3 有没有办法告诉这个推动视图使用第3行或类似的东西那？ – Tanner 2010-05-10 00:44:59
你在问错误的问题。你应该问为什么listOfItems中只有一个项目？当那里只有1个时，你怎么能期望得到物品3？ – progrmr 2010-05-11 13:25:20