Ok, after a few tries I finally populated the static table view with help from #jrturton ( how to populate a static UITableView ).
But now I have another problem.. It seems while the fields are populated, only visible fields are populated via the method I use. Other fields while populated via code, remains empty when scrolling down.
Is there something I'm missing? While filling dynamic tables via delegates are certain to solve the problem I'm seeing, I just don't want to fill all static texts (labels) via arrays etc. And I know there will always be 16 rows in the table.
So anyone having any suggestion to what went wrong?
Here is the code:
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
}
}
-(void)setParam:(id)newparam
{
if (_param != newparam) {
_param = newparam;
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (_detailItem) {
for (int idx=0; idx<16; idx++) {
NSString *value = [NSString stringWithFormat:#"%#",[_param objectAtIndex:idx]];
[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:idx inSection:0]].detailTextLabel.text = value;
}
}
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
// Do any additional setup after loading the view, typically from a nib.
appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[self configureView];
}
I modified some lines from earlier code, and put some codes that might help understanding better.
Related
I have created a view with segment control. So when I select No it should show another set of questions. I'm achieving this using tableview and constraints. I'm setting the correct constraints in code as well as in UI but the it shows only when I scroll the UI. This is the code through which I'm setting the constraint
- (void)segmentChanged:(id)sender
{
if ([sender isEqual:_TestedForPestiAntiBioticsToggle]) {
if (_TestedForPestiAntiBioticsToggle.selectedSegmentIndex == 1) {
//_percentOfAntiBodyTxt.hidden=YES;
//_percentagelbl.hidden=YES;
_ans3bConstraints.constant = 75;
}
else {
_percentOfAntiBodyTxt.text = #"";
//_percentOfAntiBodyTxt.hidden=NO;
//_percentagelbl.hidden=NO;
_ans3bConstraints.constant = 5;
}
}
}
The screenshot of the my layout is as follows
the layout
This is the image of my UI
This is the correct UI I get after scroll
This is the incorrect UI I get before scroll
I need to get the proper UI without scroll.
I just reloaded my table view and table data and it worked like charm. This is the code:
(void)segmentChanged:(id)sender
{
if ([sender isEqual:_TestedForPestiAntiBioticsToggle]) {
if (_TestedForPestiAntiBioticsToggle.selectedSegmentIndex == 1) {
_percentOfAntiBodyTxt.text = #"";
//_percentOfAntiBodyTxt.hidden=YES;
//_percentagelbl.hidden=YES;
_ans3bConstraints.constant = 75;
[self reloadTable];
[self.tableView reloadData];
}
else {
//_percentOfAntiBodyTxt.hidden=NO;
//_percentagelbl.hidden=NO;
_ans3bConstraints.constant = 5;
[self reloadTable];
[self.tableView reloadData];
}
}
}
I am using EAWiFiUnconfiguredAccessoryBrowser to detect EAWiFiUnconfiguredAccessory. The code to start the accessory search it's the following:
- (void)viewDidLoad {
[super viewDidLoad];
if (_accessories == nil) {
_accessories = [[NSMutableArray alloc] init];
}
if (_browser == nil) {
_browser = [[EAWiFiUnconfiguredAccessoryBrowser alloc] initWithDelegate:self queue:nil];
_browser.delegate = self;
}
}
Unfortunately it does find accessories only the first time the View loads. If I go back to the previous view and then reload the view it does not find them.
I tried:
recreating the browser accessory and restarting the search (does not work)
stopping the search and restarting it (does not work)
This is the latest code I got (refer to this together with the code above):
- (void) viewWillAppear:(BOOL)animated{
NSLog(#"view will appear");
if (_accessories != nil) {
[_accessories removeAllObjects];
}
[self.tableView reloadData];
[self initializeBrowswerAndStartSearch];
}
- (void) initializeBrowswerAndStartSearch{
if (_browser != nil) {
[_browser stopSearchingForUnconfiguredAccessories];
}
[_browser startSearchingForUnconfiguredAccessoriesMatchingPredicate:nil];
}
- (void) viewWillDisappear:(BOOL)animated{
[_browser stopSearchingForUnconfiguredAccessories];
}
It seems that the accessory list information is cached somewhere within the APP. If I restart the APP it will find them so I guess there is something that I am missing.
Any help?
so i have the same problem..you should use the unconfiguredAccessories array. Also, try keeping the instance of the browser alive. If you discover the device once, and you re-instantiate the browser, you wont find it again
EAWiFiUnconfiguredAccessoryBrowser has issues,and doesn't provide reliable result in certain use cases. i think you should try this
- (void) viewWillAppear:(BOOL)animated{
NSLog(#"view will appear");
if (_accessories != nil) {
[_accessories removeAllObjects];
}
[self.tableView reloadData];
[self initializeBrowswerAndStartSearch];
}
below method makes browser object nil and reinitialises it, in this case browser object will always return you updated(i.e, proper) values . it worked perfectly for me.
-(void) initializeBrowswerAndStartSearch
{
// Make EAWiFiUnconfiguredAccessoryBrowser object nil and reinitiate ,start searching again
_browser = nil;
_browser = [[EAWiFiUnconfiguredAccessoryBrowser alloc] initWithDelegate:self queue:nil];
[_browser startSearchingForUnconfiguredAccessoriesMatchingPredicate:nil];
}
anytime you feel EAWiFiUnconfiguredAccessoryBrowser isn't providing proper result , try this.
I also have this issue. So I build a singleton called WAC service, then you can keep this singleton alive during the app life cycle. Anywhere you want to load the unconfigured accissories. Just load it from [_browser unconfiguredAccessories].
In my VC I have a UITableView. Each cell has a UITableView as one of its contents. Timer is set updating each cell every 10secs. Events are handled which also reloads the respective cell.
Method that timer calls :-
-(void) updateVisitotsLists {
NSLog(#"UPDATING VISITORS LIST ***************************");
// Call API's to get lists
[api getVisitorsList];
// Init Arrays
browsingList = [MainAppDataObject sharedAppDataObject].visitors_browsingList;
secondList = [MainAppDataObject sharedAppDataObject].visitors_secondList;
thirdList = [MainAppDataObject sharedAppDataObject].visitors_thirdList;
fourthList = [MainAppDataObject sharedAppDataObject].visitors_fourthList;
// AS these are no more useful, so make it nil & save memory
[MainAppDataObject sharedAppDataObject].visitors_browsingList = nil;
[MainAppDataObject sharedAppDataObject].visitors_secondList = nil;
[MainAppDataObject sharedAppDataObject].visitors_thirdList = nil;
[MainAppDataObject sharedAppDataObject].visitors_fourthList = nil;
// Reload all lists with latest data
[self reloadBrowsingRow];
[self reloadSecondRow];
[self reloadThirdRow];
[self reloadFourthRow];
}
Event Handler Method :-
-(void) handleNewVisitor : (NSNotification *) notification {
// UPDATE VISITOR'S LIST
Visitor *v = [notification object];
#try {
if (v != nil) {
// Add V to browsing list
[browsingList addObject:v];
// Reload browsing list
[self reloadBrowsingRow];
}
}#catch (NSException *e) {
NSLog(#"EXCEP - %#", e);
}
v = nil;
return;
}
Reloading Method -
-(void)reloadBrowsingRow {
// Browsing
VisitorsListsCell *bcell = (VisitorsListsCell*)[self.visitorlistsTv cellForRowAtIndexPath:[NSIndexPath indexPathForRow:2 inSection:0]];
[bcell.listsTableView reloadData];
[bcell updateButtonText];
[bcell setNeedsDisplay];
bcell = nil;
return;
}
The Problem :-
When updateVisitotsLists is called thru timer, the updated contents are not reflected on cell.
When event handler method calls the same [self reloadBrowsingRow]; method, the contents of the cell are updated and reflected.
Due to this despite cells contents are updated but are not reflected until the state of cell is changed - expanded or collapsed.
I tried removing timer and cell updates properly on event caught, but when timer was on and event was caught, method is called but contents are not reflected on the screen.
I feel both methods may be calling reload method at same time, hence this must be happening or what ? How can this be handled making sure that the contents of cells are updated in any respect ? Any help is highly appreciated. Thanks.
Use [tableview reloadData]; on that method.
Because Reload on tableView will reload all data, so it will be more helpful.
I have two UIViewControllers, one is a UIPickerViewController, the Other a UITableViewController. Ideally the Picker should get a request from the user to add x amount of some item to the tableView. The Picker gets user inputs and assigns them to variables val1, val2, val3, where val1 is the number of items (number of rows) and val2 is the name or label for the item.
PickerViewController.m
- (IBAction)add:(id)sender
{
TableViewController *tvc = [[TableViewController alloc] init];
[tvc setValues:self.val1 :self.val2 :self.val3];
[self presentViewController:tvc animated:YES completion:nil];
}
TableViewController.m
-(void)setValues:(NSString *)newVal1 :(NSString *)newVal2 :(NSString *)newVal3
{
self.val1 = newVal1;
self.val2 = newVal2;
self.val3 = newVal3;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"UITableViewCell"];
// This is just a header which holds my "Add" button
UIView *header = self.headerView;
[self.tableView setTableHeaderView:header];
[self addNew:self.val1 :self.val2 :self.val3];
}
- (void)addNew:(NSString *)newVal1 :(NSString *)newVal2 :(NSString *)newVal3
{
if(!self.numberOfRows){
NSLog(#"Initially no of rows = %d", self.numberOfRows);
self.numberOfRows = [self.val1 intValue];
NSLog(#"Then no of rows = %d", self.numberOfRows);
}
else
{
self.numberOfRows = self.numberOfRows + [newVal1 intValue];
NSLog(#"New no rows = %d", self.numberOfRows);
}
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:self.numberOfRows inSection:0];
// Only run when called again .. not initially
if(self.run != 0){
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:#[indexPath]withRowAnimation:UITableViewRowAnimationBottom];
self.run ++;
[self.tableView endUpdates];
}
}
// "ADD" button which should go back to the picker and get new items to add to the table
- (IBAction)testAdd:(id)sender
{
PickerViewController *pvc = [[PickerViewController alloc] init];
[self presentViewController:pvc animated:YES completion:nil];
}
Now, I realize every time I call the next view controller I am creating a new instance of it, but I don't know how else to do it, I figure this is the main problem. As of right now, I expect when I leave the tableview for the picker view and return the console should log "New no of rows = x" but that doesn't happen.
I know val3 isn't used and my addNew: may not be the best, but I just need it to handle the basic logging mentioned above and I should be able to take it from there.
Been stuck on this for days
Create a property for TableViewController, and only create it the first time you present it,
- (IBAction)add:(id)sender {
if (! self.tvc) {
self.tvc = [[TableViewController alloc] init];
}
[self.tvc setValues:self.val1 :self.val2 :self.val3];
[self presentViewController:self.tvc animated:YES completion:nil];
}
It's not entirely clear from you question, whether it's this presentation or the one you have in the table view class that you're talking about. It also looks like you're doing something wrong in terms of presentation -- you're presenting the picker view from the table view controller, and also presenting the table view controller from the picker. That's not correct, you should present which ever controller you want to appear second, and that controller should use dismissViewControllerAnimated to go back, not present another controller.
In testAdd you don't need to create a new instance and present it. If you want to go back to the presentingViewController, just use dismissViewControllerAnimated .
And you will go one controller up in the stack.
I am creating an iPad app with splitview, here is the screen shot,
In this one, I want to update the values in the righthand side tableview, when I change the tab in the masterview controller (left hand side). Which will be the good aproach, Should I load another viewcontroller for each tab change? Is it possible? Or just update the table? For all the tab changes i want to display a tableview with different data.
I used following code, i can see the changes in the log, but the table is not getting updated.
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
[_detailItem release];
_detailItem = [newDetailItem retain];
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (isStudent) {
textStr = #"student";
NSLog(#"Student....%#",textStr);
[self.tableView reloadData];
}if (isTeachers) {
textStr = #"teacher";
NSLog(#"Teacher....%#",textStr);
[self.tableView reloadData];
}if (isPreference) {
textStr = #"preference";
NSLog(#"Preference....%#",textStr);
[self.tableView reloadData];
}if (isConfiguration) {
textStr = #"configuration";
NSLog(#"Configuration....%#",textStr);
[self.tableView reloadData];
}
}
I am also tried
[self performSelectorOnMainThread:#selector(refreshTableView) withObject:nil waitUntilDone:NO];
Please share your ideas.
thanks :)
At last I found the issue myself, and I was really great to search for a solution. I have went through several forums and tutorials. Finally I figured out the issue. And in this video, they have illustrated how to create a SplitView application using XCode 4.2. In this one, just one line of code fixed the issue. That is in the Appdelegate.m file. In default, the MasterViewController doesn't have access to the detail view, so if we need to do something on the detailview, we have to connect masterviewcontroller and detailviewcontroller. Check the video, then you will (those who are facing the same issue) understand.
Thanks :)