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ReloadData for UITableView not working; tableView returns NULL when logged
This is happening because you are calling a method on tableView before it actually exists. Simply initializing that class doesn't draw the table itself, so using reloadData before the table has actually been created doesn't really make any sense. What you want to do in this situation is create your nameArray in whatever class is calling setTableViewContent, and then pass it in either via a custom init method, or by setting tableVC.nameArray before loading that table view controller. What I would do is make custom init method like - (id)initWithArray:(NSMutableArray *)nameArr Which should look something like this: if (self = [super init]) { nameArray = [nameArr copy]; } return self; Then where you have TableViewController *tableVC = [[TableViewController alloc]init]; put TableView

Categories : IOS

when uitableview calls reloaddata
Is your "completionHandler" running on main thread? If not or you are not sure about that, try executing your code on main thread. Because according to apple documentation, the result of not updating the UI on main thread is uncertain. You can try this: [getData completionHandler^() // an async db call { dispatch_async(dispatch_get_main_queue(), ^{ tableView.dataSource = self; }); }];

Categories : IOS

Parse, UITableView and reloaddata
Try running the reloadData from the main thread: [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) { if (!error) { NSLog(@"Successfully retrieved %d trips.", objects.count); [self.tripNamesList addObjectsFromArray:objects]; NSLog(@"%@", tripNamesList); for (PFObject *object in objects) { NSLog(@"%@", object.objectId); [self.tripNamesList addObject:object ]; } dispatch_sync(dispatch_get_main_queue(), ^{ [self.tableView1 reloadData]; }); } else { // Log details of the failure NSLog(@"Error: %@ %@"

Categories : IOS

UITableView reloadData with performSelectorInBackground
- (void)viewDidLoad { [super viewDidLoad]; [self performSelectorInBackground:@selector(exercisedata) withObject:nil]; } -(void)exercisedata { [self performSelectorOnMainThread:@selector(ProcessComplete) withObject:nil waitUntilDone:NO]; } -(void)ProcessComplete { [tbl reloadData]; }

Categories : Objective C

UITableView reloadData is slow
mainQueue adds that block to the operation queue of the main thread but does not guarantee when it will be executed. Generally, you shouldn't do UI updates inside the block. Implement a method that gets called after the network operation is finished and then call reloadData from there.

Categories : IOS

UITableView reloadData does not seem to cause cellForRowAtIndexPath: to be called
After reloadData, try this: NSIndexSet * sections = [NSIndexSet indexSetWithIndex:0]; [self.tableView reloadSections:sections withRowAnimation:UITableViewRowAnimationNone]; I found if the data change is subtle, the table view seems to optimize away the need to refresh.

Categories : IOS

Set selection in UITextView after UITableView reloadData?
Reloading table view does not normally resign first responder. Must be something in your code, for example in cellForRowAtIndexPath. Anyway, to restore lost focus, keep track of which textView is editing (if there is only one, it's much simpler), remember it before calling reloadData and restore cursor after that. - (void)textViewDidBeginEditing:(UITextView *)textView { _currentEditingTextView = textView; } - (void)textViewDidEndEditing:(UITextView *)textView { _currentEditingTextView = nil; } - (void)yourUpdate { UITextView *editingTextView = _currentEditingTextView; [tableView reloadData]; [editingTextView performSelector:@selector(becomeFirstResponder) withObject:nil afterDelay:0.1] } Also, if you need to u

Categories : Iphone

UITableView reloadData and cellForRowAtIndexPath - interruptable?
I don't think it is possible to be in the middle of cellForRowAtIndexPath when reloadData is called assuming they are both called on the same (main) thread (having an async processing on background thread at cellForRowAtIndexPath seems meaningless).

Categories : IOS

UITableView reloadData doesn't work
Need more code, that part where you created and call Myviewcontroller's addContentToArray method. I think you used release code there for Myviewcontroller's object, try once with hide that part.

Categories : Iphone

UITableView ReloadData not using dequeued cells
Forcibly calling reloadData wipes the slate clean on dequeued cells/headers/etc. From the documentation: Call this method (reloadData) to reload all the data that is used to construct the table, including cells, section headers and footers, index arrays, and so on. For efficiency, the table view redisplays only those rows that are visible. It adjusts offsets if the table shrinks as a result of the reload. If what you are doing is adding or substracting cells or sections, try using insertRowsAtIndexPaths:withRowAnimation: and deleteRowsAtIndexPaths:withRowAnimation: instead. I also suspect your NowsHeadlineHeaderView set up is doing something inefficient, you might want to look into that.

Categories : Iphone

UITableView realtime reloadData issue
try like this,you'l succeed. - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{ NSString *str= [NSString stringWithFormat:@"%@%@",textField.text,string]; NSLog(@"---%@",str); if([str length]==0){ array = [Model fromCodeData]; //! [tableView reloadData]; } else{ array = [Model calculate:array withSum:[textField text]]; [tableView reloadData]; } return YES; }

Categories : IOS

UITableView content not displayed the very first time even after reloadData
"content" is an empty mutable array until you touch whatever (button?) action that calls the "selectLanguage" and "selectVoice" methods (and then you reassign the "content" variable). I don't see any other manipulations of the "content" mutable array, so it's no wonder to me that nothing appears until you actually touch something. You also do not show where you are calling "reloadData". "content" needs to have array entries in there for "reloadData" to work.

Categories : IOS

UITableView datasource methods not called on reloadData in IOS
someTable = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain]; You have already bind your UITableView from nib/storyboard. In this case you did not have to alloc again the tableview. Removing this line will do the work

Categories : IOS

At canEditRowAtIndexPath Method, reloadData of UITableView not work properly?
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { [self.sql_ deleteSoundFileAudioTableWhereMainID:[[self.listOfSounds objectAtIndex:indexPath.row] objectForKey:@"main_id"]]; /// delete record from DB [self.listOfSounds removeObjectAtIndex:indexPath.row]; /// delete record from Array [self updateListofSoundsFile]; /// Custom method } [self.tblView reloadData]; }

Categories : Iphone

UITableView reloadData doesn't work when change sub object in datasoure.
In the cellForRowAtIndexpath method manage the datasource method properly as it retrives the value from the datasource array and displays it,That is it I doubt the problem is that the reusability is causing the trouble in your code - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell; static NSString *cellIdentifier1 = @"surveyCell"; if (tableView== self.surveytableView) { cell= [tableView dequeueReusableCellWithIdentifier:cellIdentifier1]; if(cell==nil) { //alloc the cell //DO NOT SET THE VALUE HERE } //here set the value return cell; }

Categories : IOS

reloadData not working (called in delegate)
Make sure you are sending the reloadData message from the main thread, otherwise you can have problems. It appears that the TitleItemsReturned method may not be called from the main thread (e.g. from a background thread in a NSURLConnectionDelegate method implemented by the networkLayer object, or a similar delegate method). If TitleItemsReturned is indeed not being run on the main thread, you can do this inside of TitleItemsReturned: dispatch_async(dispatch_get_main_queue(), ^{ [self.tableView reloadData]; }); The searchBarCancelButtonClicked method is working because that method is running on the main thread (from a UI event).

Categories : IOS

Custom UITableViewCell reverts to standard blue cell for selectRowAtIndexPath
See this question: UITableView Cell selected Color As a workaround, you can override didSelectRowAtIndexPath and set background color there: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; cell.contentView.backgroundColor = [UIColor colorWithRed:1.0 green:0.0 blue:0.0 alpha:1.0]; To set backgroungColor to normal color override didDeselectRowAtIndexPath: -(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath

Categories : IOS

I added selectRowAtIndexPath in cellForRowAtIndexpath to mark previous selected row but if scroll tablview it crashs
[tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:[[[NSUserDefaults standardUserDefaults] objectForKey:kPreviousSelectedRow] integerValue] inSection:0] animated:YES scrollPosition:UITableViewScrollPositionNone]; Shouldn't be inside cellForRowAtIndexpath. Get your indexPath from didSelectRowAtIndexPath which is triggered every time the user selects a cell. If you want to trigger another method when the user deselects a cell or selecting another cell use -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

Categories : Iphone

iOS / MKMapView: If one assigns to the image property of an MKAnnotationView an animated UIImage, it is not animated
Well, a friend gave me a tip for a workaround: Make a UIImageView of the animated image, and embed it as a subview into another not-animated container UIView, and use this not-animated container view as the image of the MKAnnotationView. In this case, the annotation view shows the animated image.

Categories : IOS

Fluent animated image working as a background?
Depending on what you mean by rotate and the browsers in which you want it to work, you might be able to get away with (almost) pure CSS. #animated {animation: loading 5s infinite linear} @keyframes loading { from {transform: rotate(0deg);} to {transform: rotate(359deg);} } <img id="animated" src="logo.png"> MDN has more info on support and what versions require prefixes.

Categories : HTML

AndEngine: animated sprite not working with physics handler
Figured it out! Animation must started only if pValueX isn't 0, i.e., if sprite is moving. public void onControlChange(final BaseOnScreenControl pBaseOnScreenControl, final float pValueX, final float pValueY) { if (pValueX > 0) { //animate } else //stop animation physicsHandler.setVelocity(pValueX * 100, pValueY * 100); }

Categories : Android

Java: Superimpose/overlay animated gif on other animated gif
This works for me. The smaller orbital image is centered inside the larger moon phases image. import java.awt.*; import javax.swing.*; import java.net.*; public final class Tester extends JFrame { public static void main(String[] args) throws MalformedURLException { new Tester(); } private Tester() throws MalformedURLException { setTitle("Tester"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Icon backgroundIcon = new ImageIcon( new URL("http://1point1c.org/gif/moon/moonphases.gif")); Icon foregroundIcon = new ImageIcon( new URL("http://1point1c.org/gif/thum/plnttm.gif")); JLabel background = new JLabel(backgroundIcon); JLabel foreground = new JLabel(foregroundIcon); backg

Categories : Java

Imagick making animated gifs not animated?
Because animated gifs are not stored as full images, but instead are stored as the differences between the frames of the animation, you need to call Imagick::coalesceImages to be able to modify the images contained in the Gif. After modifying them, you then need to call Imagick::deconstructImages to generate the new set of differences between the frames, to be able to save them out as an animated Gif. <?php $imagick = new Imagick("original.gif"); $format = $imagick->getImageFormat(); if ($format == 'GIF') { $imagick = $imagick->coalesceImages(); do { $imagick->resizeImage(120, 120, Imagick::FILTER_BOX, 1); } while ($imagick->nextImage()); $imagick = $imagick->deconstructImages(); $imagick->writeImages('new_120x120.gif', true); // can be added some

Categories : PHP

Sorting UITableView not working
filterUsingPredicate: is a void method so you can't call methods on its result. Also you don't want to filter this array inside tableView:cellForRowAtIndexPath: as that will really mess with your data. Every cell you'd discard some of your patients! Try: NSArray *filteredArray = [[patients filteredArrayUsingPredicate:search] sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]];

Categories : Iphone

UITableView setContentOffset not working
try this. - (void) viewWillAppear:(BOOL)animated{ .... [self hideSearchBar]; } -(void)hideSearchBar:{ [self.tableView setContentOffset:CGPointMake(0, searchBar.height]; } if dont work, say something.

Categories : IOS

Navigation bar items are animated when [self.navigationItem setRightBarButtonItems:items animated:NO]
Just change your code to: - (void)viewDidLoad { [super viewDidLoad]; UIBarButtonItem *searchCancelButton = [[UIBarButtonItem alloc] initWithTitle:@"custom1" style:UIBarButtonItemStyleBordered target:self action:nil]; [searchCancelButton setBackgroundVerticalPositionAdjustment:3 forBarMetrics:UIBarMetricsDefault]; UIBarButtonItem *searchCancelButton1 = [[UIBarButtonItem alloc] initWithTitle:@"custom2" style:UIBarButtonItemStyleBordered target:self action:nil]; [searchCancelButton1 setBackgroundVerticalPositionAdjustment:3 forBarMetrics:UIBarMetricsDefault]; [self.navigationItem setRightBarButtonItems: [[NSArray alloc] initWithObjects:searchCancelButton, searchCancelButton1, nil] animated:NO]; } With your current implementation you set the navigation buttons twice. First usin

Categories : IOS

UITableView Accessory Button Segue Not working
You can pass the indexPath as sender to the performSegueWithIdentifier call, like this: - (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath { [self performSegueWithIdentifier:@"toDetail" sender:indexPath];//IndexPath as sender } And in your prepareForSegue method: - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"toDetail"]) { //Detect sender class and act accordingly NSIndexPath *indexPath = [sender isKindOfClass:[NSIndexPath class]] ? (NSIndexPath*)sender : [self.tableView indexPathForSelectedRow]; DrugDetailViewController *destViewController = segue.destinationViewController; destViewController.selectedItem = [[candyArray objec

Categories : IOS

Select multiple rows in UITableview not working when scrolling
UITableViewController reuse the rows when scrolling. So you have to track the selected rows by yourself. Set/Unset the selection on the render method of the UITableViewController.

Categories : Objective C

Static UITableView appear disabled opaque alpha not working
I think you cant access the cell's alpha directly like that. Try this EDIT: UIColor *colorWithAlphaOfPointFour = [UIColor colorWithRed:0 green:0 blue:0 alpha:.4]; [[cell contentView] setBackgroundColor:[UIColor colorWithAlphaOfPointFour]]; [[cell backgroundView] setBackgroundColor:[UIColor colorWithAlphaOfPointFour]]; [cell setBackgroundColor:[UIColor colorWithAlphaOfPointFour]];

Categories : IOS

Using an animation with reloadData
You first tell the tableView to expect updates with beginUpdates. Then update the relevant sections (if your tableView has only one section then just pass zero for the section number). Here's where you specify the animation - you can play around with it to get the effect that you want. After that you call endUpdates on the tableView. The typedef for UITableViewRowAnimation specifies: typedef enum { UITableViewRowAnimationFade, UITableViewRowAnimationRight, UITableViewRowAnimationLeft, UITableViewRowAnimationTop, UITableViewRowAnimationBottom, UITableViewRowAnimationNone, UITableViewRowAnimationMiddle, UITableViewRowAnimationAutomatic = 100 } UITableViewRowAnimation; Play around to see which one you want. Even selecting UITableViewRowAnimationNonecan have a nice e

Categories : IOS

_tableView reloadData crashes my app
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { else if (tableView == self.tableView2){ return [names count]; } } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { else if (tableView == self.tableView2){ cell.textLabel.text = [namesAndCompanies objectAtIndex:indexPath.row]; } } You use names Array to count number of rows. And namesAndCompanies Array to select object for row. If names Array returns 1 and namesAndCompanies Array is empty, application will crash.

Categories : IOS

How can I replace `UITableViewCell` with a `UIScrollView` or `UITableView` after the main `UITableView` is already loaded?
In a nutshell, if the text below is tl;dr: call reloadRowsAtIndexPaths, remember which cell you've changed, update cellForRowAtIndexPath and heightForRowAtIndexPath accordingly, and you are set to go. Full version: When you said swiped away, did you meant that you are reloading or deleting certain row of your UITableView? If so, I think you might be able to do what you described by calling [tableView reloadRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationLeft]; (or whatever direction you'd like), then saving the indexPaths you've changed (in your case only one indexPath), and react appropriately in the cellForRowAtIndexPath dataSource method - changing the normal cell for another one, custom-made, with UITableView or UIScrollView inside, and also reacting in the hei

Categories : Iphone

UICollectionView reloadData not functioning properly in iOS 7
In my case, the number of cells/sections in the datasource never changed and I just wanted to reload the visible content on the screen.. I managed to get around this by calling: [self.collectionView reloadItemsAtIndexPaths:[self.collectionView indexPathsForVisibleItems]]; then: [self.collectionView reloadData];

Categories : IOS

reloadData doesn't do anything when called from a method
Ensure you are calling UI code from the main thread: - (void)reloadMyTable { dispatch_async(dispatch_get_main_queue(), ^{ [myTable reloadData]; }); } (I strongly suspect that the code that gets the data from the web server is running in a background thread; if not it should be)...

Categories : IOS

NSOutlineView reloadData close my NSPopOver
When you call reloadData on the outline view the outline view removes all of its subviews (including the button that the popover is attached to) and recreates them. When the button is removed from its superview the popover is closed. Do you really need to reload all of the outline view data? Could you reload specific rows instead using -reloadDataForRowIndexes:columnIndexes: or -reloadItem:? Alternatively, rather than passing the button (sender) to -showRelativeToRect:ofView:preferredEdge:m you could try passing the outline view itself.

Categories : Objective C

UICollectionView reloadData ghost cells
I have had this similar issue once. The problem is my custom cell creates subview again and again. From my guess, you should change the value of the label instead re-create it after dequeue.

Categories : IOS

add a new item to the UITable view vs. reloadData
By reload data you're forcing all rows to be recreated so when you have information what is new it is just much more performant to tell table view what have to be added/removed, especially when, for example, you added one row at the end and that part is currently not on screen (so view does not have to be re-rendered, only scroll high have to be recalculated).

Categories : IOS

Interesting issue with UICollectionView reloadData
When you call insertItemsAtIndexPaths (removeItemsAtIndexPaths is analogous), you are telling your collectionview that its datasource now has more items available, and that it should insert these available items at the indexpaths you specify. It checks your datasource whether that statement is true, and if it detects that the amount of old items plus the amount of items you say you inserted is not equal to the amount of new items, it says it can't do the update, as you lied about how many items you changed. Now, what you are doing is you are telling your collectionview is that it should reload all its data from its datasource (with the new data) and right after that, you tell it you inserted x items. That is a false statement, as you just reloaded the collectionview, which updated its am

Categories : IOS

Programmatically TableView won't reloadData after JSON request
As soon as you assign a datasource/delegate the tableview is going to query it for data. Your JSON callback probably hasn't finished running yet. You need to check to see if it's done and return 0 rows if it hasn't. If you return 8 rows before the JSON query has actually completed, you're going to crash. Check if _feed has any data in it in numberOfRowsInSection, and return 0 if it doesn't.

Categories : IOS

Nothing happens after calling [table reloadData] when called with dispatch_async
Try this [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul); dispatch_async(queue, ^{ NSError *error = nil; // Request the data and store in a string. NSString *resp = [NSString stringWithContentsOfURL:jsonURL encoding:NSASCIIStringEncoding error:&error]; if (error == nil) { // Convert the String into an NSData object. NSData *data = [resp dataUsingEncoding:NSASCIIStringEncoding]; // Parse that data object using NSJSONSerialization without options. NSDictionary *json = [[NSDictionary alloc] init]; json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions

Categories : IOS



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