我正在使用故事板创建一个iphone应用程序。我基本上是关于Objective c和Xcode的新手。
我有一个类别列表，每次点击一个类别它应该打开一个tableView，所以我可以在该类别中添加一个项目。但是，不是为每个类别获取不同的tableView，而是复制所有类别和添加的项目的相同表。
如何为每个标签创建新表？
提前致谢！
以下是我添加类别
的内容@interface ListViewController ()
@end
@implementation ListViewController{
NSMutableArray *items;
}
@synthesize lists;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
items = [NSMutableArray arrayWithCapacity:20];
List *item = [[List alloc] init];
item.title = @"Grocery List";
[items addObject:item];
item = [[List alloc]init];
item.title = @"Project List";
[items addObject:item];
item = [[List alloc] init];
item.title = @"Events List";
[items addObject:item];
self.lists = items;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return [self.lists count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Configure the cell...
/*UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ListsCell"];
List *list = [self.lists objectAtIndex:indexPath.row];
cell.textLabel.text = list.title;*/
ListCell *cell = (ListCell *)[tableView dequeueReusableCellWithIdentifier:@"ListsCell"];
List *list = [self.lists objectAtIndex:indexPath.row];
cell.titleLabel.text = list.title;
return cell;
}
//Add new list, new row will be added on the bottom and its data source must always be sync
-(void)addViewControllerSave:(AddViewController *)controller addList:(List *)list{
[self.lists addObject:list];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[self.lists count] - 1 inSection:0];
[self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[self dismissViewControllerAnimated:YES completion:nil];
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
if(editingStyle == UITableViewCellEditingStyleDelete){
[self.lists removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
/* 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
}*/
}
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
/*
#pragma mark - Navigation
*/
// In a story board-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
if([segue.identifier isEqualToString:@"AddList"]){
UINavigationController *navigationController = segue.destinationViewController;
AddViewController *addViewController = [[navigationController viewControllers] objectAtIndex:0];
addViewController.delegate = self;
}
else if([segue.identifier isEqualToString:@"ViewItem"]){
UINavigationController *nav = segue.destinationViewController;
ItemViewController *itemViewController = [[nav viewControllers] objectAtIndex:0];
itemViewController.delegate = self;
}
}
#pragma mark - AddViewControllerDelegate
-(void)addViewControllerCancel:(AddViewController *)controller{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)addViewControllerSave:(AddViewController *)controller{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)itemViewControllerBack:(ItemViewController *)controller{
[self dismissViewControllerAnimated:YES completion:nil];
}
@end
以下是我添加项目的内容：
@interface ItemViewController ()
@end
@implementation ItemViewController{
NSMutableArray *newItems;
}
@synthesize items;
@synthesize delegate;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
newItems = [NSMutableArray arrayWithCapacity:20];
Item *i = [[Item alloc]init];
i.listItem = @"a";
[newItems addObject:i];
self.items = newItems;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return [self.items count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Configure the cell...
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ItemsCell"];
Item *item = [self.items objectAtIndex:indexPath.row];
cell.textLabel.text = item.listItem;
return cell;
}
-(void)addIteViewControllerSave:(AddItemViewController *)controller addItem:(Item *)item{
[self.items addObject:item];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[self.items count] -1 inSection:0];
[self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[self dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark - Navigation
// In a story board-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
if([segue.identifier isEqualToString:@"AddItem"]){
UINavigationController *navigationController = segue.destinationViewController;
AddItemViewController *addItemViewController = [[navigationController viewControllers]objectAtIndex:0];
addItemViewController.itemDelegate = self;
}
}
#pragma mark - AddItemViewControllerDelegate
-(void)addItemviewControllerCancel:(AddItemViewController *)controller{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)addIteViewControllerSave:(AddItemViewController *)controller{
[self dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark - ItemViewControllerDelegate
-(IBAction)back:(id)sender{
[self.delegate itemViewControllerBack:self];
}
@end
AddItemViewController
#import "AddItemViewController.h"
#import "Item.h"
@interface AddItemViewController ()
@end
@implementation AddItemViewController
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(IBAction)cancel:(id)sender{
[self.itemDelegate addItemviewControllerCancel:self];
}
-(IBAction)save:(id)sender{
Item *item = [[Item alloc] init];
item.listItem = self.listItemTextField.text;
[self.itemDelegate addIteViewControllerSave:self addItem:item];
}
@end
答案 0 :(得分：1)
不要为每个标签创建新的表格视图，而是使用每个标签的不同数据填充它，您需要更改存储数据的对象并调用
[tableView reloadData];
如果您需要清除阵列中所有添加的项目，则在添加其他内容之前用于存储对象。
[self.items removeAllObjects];