why does TTTableViewDragRefreshDelegate not work - three20

Question

My class is like:
- (id)init
{
NSLog(#"lalallalalala");
if (self = [super init]) {
self.title = #"lalal";
UIImage* image = [UIImage imageNamed:#"tab.png"];
self.tabBarItem = [[[UITabBarItem alloc] initWithTitle:self.title image:image tag:0] autorelease];
self.variableHeightRows = YES;
id<TTTableViewDataSource> ds = [MainPageDataSource dataSourceWithItems:nil];
ds.model = CreateTabModelWithCurrentSettings();
self.dataSource = ds;
}
return self;
}
- (void)loadView
{
// Create the tableview.
NSLog(#"in MainPageController");
//self.view = [[[UIView alloc] initWithFrame:TTApplicationFrame()] autorelease];
self.view =[[UIView alloc] init];
self.tableView = [[[UITableView alloc] initWithFrame:TTApplicationFrame() style:UITableViewStylePlain] autorelease];
self.tableView.rowHeight = 80.f;
self.tableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.view addSubview:self.tableView];
}
- (id<UITableViewDelegate>)createDelegate {
return [[[TTTableViewDragRefreshDelegate alloc] initWithController:self] autorelease];
}
CreateDelegate seems not work, no drag & refresh appears. I don't know what's wrong with my code.
#aporat the view controller does extend TTTableViewController and my code changed to:
- (id)init
{
NSLog(#"lalallalalala");
if (self = [super init]) {
self.title = #"app";
UIImage* image = [UIImage imageNamed:#"tab.png"];
self.tabBarItem = [[[UITabBarItem alloc] initWithTitle:self.title image:image tag:0] autorelease];
self.variableHeightRows = YES;
//id<TTTableViewDataSource> ds = [MainPageDataSource dataSourceWithItems:nil];
// ds.model = CreateTabModelWithCurrentSettings();
// self.dataSource = ds;
//self.dataSource = [[[MainPageDataSource alloc] init] autorelease];
}
return self;
}
- (void)createModel {
NSLog(#"in createModel");
self.dataSource = [[[MainPageDataSource alloc] init] autorelease];
}
//- (void)loadView
//{
// // Create the tableview.
//
// NSLog(#"in MainPageController");
//
// self.view = [[[UIView alloc] initWithFrame:TTApplicationFrame()] autorelease];
// //self.view =[[UIView alloc] init];
// self.tableView = [[[UITableView alloc] initWithFrame:TTApplicationFrame() style:UITableViewStylePlain] autorelease];
// self.toolbarItems = [NSArray arrayWithObjects:
// [TTButton buttonWithStyle:#"toolbarButton:" title:#"Toolbar Button"],
// [TTButton buttonWithStyle:#"toolbarRoundButton:" title:#"Round Button"],
// nil];
//
// self.tableView.rowHeight = 80.f;
// self.tableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// [self.view addSubview:self.tableView];
//
//
//}
//- (void)viewDidLoad {
// [super viewDidLoad];
//
// self.navigationController.navigationBar.alpha = 0;
//}
- (id<UITableViewDelegate>)createDelegate {
return [[[TTTableViewDragRefreshDelegate alloc] initWithController:self] autorelease];
}
Still not appears drag & fresh

Answer 1

There are a few issues with your code:
Your view controller has to extend TTTableViewController
Don't override self.view & self.tableView in loadView. The TTTableViewController load these views for you.
Create your datasource using the standard method. This function is called automatically if you're using TTTableViewController:
///////////////////////////////////////////////////////////////////////////////////////////////////
- (void)createModel {
self.dataSource = [[[CurrencyDataSource alloc] init] autorelease];
}
What happens if you call this function directly? (This should manually display the drag to refresh header)
///////////////////////////////////////////////////////////////////////////////////////////////////
- (void)reload {
if ([self.tableView.delegate isKindOfClass:[TTTableViewDragRefreshDelegate class]]) {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:ttkDefaultFastTransitionDuration];
self.tableView.contentOffset = CGPointMake(0, -60.0f);
[UIView commitAnimations];
}
[super reload];
}