我使用以下方法来呈现一个名为 DictAddSubSecondCell 的 UIViewController：
// UIViewControler 1
- (IBAction)addWord:(id)sender{
dictAddSubSecondCellController = [[DictAddSubSecondCell alloc] initWithNibName:@"DictAddSubSecondCell" bundle:nil];
[self presentModalViewController:dictAddSubSecondCellController animated:YES];
[dictAddSubSecondCellController release];
}
当我单击 DictAddSubSecondCell 中的按钮时：
- (IBAction)dismissAction:(id)sender{
[self dismissModalViewControllerAnimated:YES];
}
UIViewControler 1 的 tableView 没有重新加载它的数据，但我在 viewWillApear 方法中添加了一个方法：
[self.table reloadData];
但它仍然无法正常工作。我对此一无所知。对我有什么建议吗？谢谢。
这是 UIViewcontroller 1 的完整源代码：
//
// DictAddSubSecond.m
//
// Created by Samuel Armstrong on 4/8/12.
// Copyright 2012 __MyCompanyName__. All rights reserved.
//
#import "DictAddSubSecond.h"
#import "DictionaryList.h"
@implementation DictAddSubSecond
@synthesize dictList, table, editButton;
@synthesize dictAddSubSecondCellController;
- (IBAction)addWord:(id)sender
{
dictAddSubSecondCellController = [[DictAddSubSecondCell alloc] initWithNibName:@"DictAddSubSecondCell" bundle:nil];
[self presentModalViewController:dictAddSubSecondCellController animated:YES];
[dictAddSubSecondCellController release];
}
- (IBAction)toggleEdit {
[self.table setEditing:!self.table.editing animated:YES];
if (self.table.editing) {
[editButton setTitle:@"Done"];
[editButton setStyle:UIBarButtonItemStyleDone];
}
else {
[editButton setTitle:@"Edit"];
[editButton setStyle:UIBarButtonItemStyleBordered];
}
}
- (IBAction)dismissAction:(id)sender
{
[self dismissModalViewControllerAnimated:NO];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
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)refreshTableData
{
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *file = [path stringByAppendingPathComponent:@"dictWithWords.tmp"];
if (dictList == nil) {
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:file];
if ([array objectAtIndex:0] != nil) {
dictList = [[NSMutableArray alloc] initWithCapacity:1];
self.dictList = array;
[array release];
}
else
{
dictList = [[NSMutableArray alloc] initWithCapacity:1];
}
}
[self.table reloadData];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self refreshTableData];
}
- (void)someMethodToReloadTable:(NSNotification *)notification
{
[table reloadData];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(someMethodToReloadTable) name:@"reloadTable" object:nil];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"reloadTable" object:nil];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [dictList count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *MoveMeCellIdentifier = @"MoveMeCellIdentifier";
UITableViewCell *cell = [self.table dequeueReusableCellWithIdentifier:MoveMeCellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:MoveMeCellIdentifier] autorelease];
//A Boolean value that determines whether the cell shows the reordering control.
cell.showsReorderControl = YES;
}
NSUInteger row = [indexPath row];
cell.textLabel.text = [dictList objectAtIndex:row];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
#pragma mark -
#pragma mark Table View Delegate Methods
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger row = [indexPath row];
[self.dictList removeObjectAtIndex:row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
withRowAnimation:UITableViewRowAnimationMiddle];
}
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
return UITableViewCellEditingStyleDelete;
}
// Asks the data source whether a given row can be moved to another location in the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}
//Tells the data source to move a row at a specific location in the table view to another location.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
NSUInteger fromRow = [fromIndexPath row];
NSUInteger toRow = [toIndexPath row];
id object = [[dictList objectAtIndex:fromRow] retain];
[dictList removeObjectAtIndex:fromRow];
[dictList insertObject:object atIndex:toRow];
[object release];
}
@end