i. I have tried a lot but could not execute successfully .
ii. In tableview cell, there are 3 3 fields need to display. One image view, button1 -->taking photo button, button2---> browse button.
iii. First time tableview should display a custom cell with one row.
iv. When a user clicks "add new button" , which lays outside of tableview, a new row will create with all above 3 fields (image view, button1, button2)
v. Number of clicks of "add new button" , will create new rows with all above 3 fields.
vi. I could do all above things created dynamically successfully with a simple image view which contains above 3 fields but could not succeed to work on custom cell.
vii. Again I need to set the tag of each cell, broswe button, take photo button so that when clicks, will take the tag value.
The table view works by adding a delegate and a data source. Assuming your table view has an owner as a view controller and both delegate and data source are the view controller itself. All you need to do is implement those data source methods to return an appropriate data then you should call reloadData on the table view or if you want a bit of extra work to look nicer check how to add rows animated around the web.
This is a very simple and not optimized example but is very short and easy to read. I hope it helps you get on the right track:
#interface MyViewController()<UITableViewDataSource, UITableViewDelegate>
#property UITableView *tableView;
#property NSArray *myCells;
#end
#implementation MyViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.tableView.delegate = self; // could be done in storyboard
self.tableView.dataSource = self; // could be done in storyboard
[self addACell];
}
- (void)addCellButtonPressed:(id)sender {
[self addACell];
}
- (void)addACell {
MyCell *cell = [[MyCell alloc] init];
[cell.button1 addTarget:self action:#selector(cellButton1Pressed:) forControlEvents:UIControlEventTouchUpInside];
[cell.button2 addTarget:self action:#selector(cellButton2Pressed:) forControlEvents:UIControlEventTouchUpInside];
self.myCells = [self.myCells arrayByAddingObject:cell];
[self.tableView reloadData]; // will call the delegate again and refresh cells
}
- (void)cellButton1Pressed:(id)sender {
MyCell *cellPressed = nil;
for(MyCell *cell in self.myCells) {
if(cell.button1 == sender) {
cellPressed = cell;
break;
}
}
// do whatever
}
- (void)cellButton2Pressed:(id)sender {
MyCell *cellPressed = nil;
for(MyCell *cell in self.myCells) {
if(cell.button2 == sender) {
cellPressed = cell;
break;
}
}
// do whatever
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.myCells.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
return self.myCells[indexPath.row];
}
#end
My UI structure is as follow:
UITabBarController (TBC) -> UINavigationController (NC) -> UITableViewController (TVC)
(for the simplicity of the example lets say the TBC has only one controller on its viewControllers array - the NC)
My TVC has UISearchBar as its table header, and when the TVC appear I hide the search bar beneath the NC navigation bar by settings the table view content offset.
When user tap a cell in the TVC another view controller is pushed (VC) and hides the tab bar with VC.hidesBottomBarWhenPushed = YES;
Now there is a very annoying behavior that I dont know how to solve:
When the user tap the back button from VC back to TVC, the search bar jumps to be visible even if it was hidden (beneath the navigation bar) before the VC was pushed.
This effect happens only if the TVC doesn't have enough rows to fill the screen, its like the search bar force itself to be visible if there is a place on screen. but its really looks bad and buggy.
I uploaded a simple project that demonstrates the problem, it has the same structure as I described in my question.
I added two bar buttons for your convenience, the "hide bar" button hides the search bar for you, and the "toggle count" button toggle the table view rows count to demonstrate that the issue happens only if there are few items.
Okay.. It looks to me like you've stumbled upon a bug. It should be reported through apples bugreporter (here).
I've made a fairy simple working work-around, but keep in mind that it is a work-around. This will work, but you might have to review it if you have/add other controls to the tableView. It should be safe to use(not acting randomly), and it's not the ugliest of work-arounds, so I think it's fine to use in a release. I've uploaded the same project with the fix here, and you can just go ahead and download it, and you'll probably understand what I've done. I'll explain (in extreme detail) what I've actually thought and done here, in case the download links dies in the future:
Train of thought:
As simalone also said, the problem is that when hidesBottomBarWhenPushed is set to YES, then it will call an additional viewDidLayoutSubviews which somehow resets your current state. We need to override viewDidLayoutSubviews, and check if we are laying out subviews because we are coming from ViewController, or if it's just a regular call. When we establish that the call is indeed because we are returning from ViewController, we need to hide the search bar (only if it was hidden before).
When we return from ViewController, three calls are made to viewDidLayoutSubviews in TableViewController. I'm guessing the first is for tableView, and it seems that the second call is 'for'(or rather from) the tabBar. This second one is the one moving the searchBar down. I have no idea what the third call is, but we can ignore it.
So now there are three things we need to check inside viewDidLayoutSubviews: We need to check if we are returning from ViewController, we need to check if the searchBar was hidden before we pushed(if it should hidden be now), and we need to check that it's the second call to this method.
First things first.
In TableViewController, I added a property #property BOOL backPush; to the header(.h)-file. Now I need to change this variable from ViewController.
In ViewController, I put this:
#import "TableViewController"
...
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
if(self.isMovingFromParentViewController)
{
if([self.navigationController.topViewController isKindOfClass:[TableViewController class]])
[((TableViewController*)self.navigationController.topViewController) setBackPush:YES];
}
}
In the code above, when the view is disappearing (I.E pushing forward, back, closing, whatever), I'm checking if we are disappearing because it was removed from the parent. If it is(which it is when the back-button is called), I check if the now-current top view controller is of class TableViewController, which it also is if we go back. Then I set the property backPush to YES. That's the only thing we need in ViewController.
Now, to the TableViewController. I added a counter next to your row-count:
#interface TableViewController () {
NSInteger _rows;
int count;
}
This is to keep track of how many calls have been made to viewDidLayoutSubviews later. I set count = 0; in viewDidLoad.
Now to the magic:
-(void)viewDidLayoutSubviews
{
[super viewDidLayoutSubviews];
if((self.backPush && count == 0 && self.tableView.contentOffset.y ==
self.tableView.tableHeaderView.frame.size.height) ||
(self.backPush && count == 1 &&
self.tableView.contentOffset.y == 0))
{
if(count == 0)
count++;
else
{
count = 0;
self.backPush = NO;
[self hideSearchBar];
}
}
else if((count == 0 || count == 1) || self.tableView.tableHeaderView.isFirstResponder)
{
count = 0;
self.backPush = NO;
}
}
The first if-statement wants either of these situations:
backPush is YES, count is 0, and searchBar is already hidden.
backPush is YES, count is 1, and searchBar is visible.
If 1. is true, then we increment count by 1.
If 2. is true, then 1. has already happened, and we now know that we are in the second round of viewDidLayout.. when we are coming back from VC AND that the searchBar WAS hidden (because 1. happened) but now isn't hidden. It probably happens in the super-method or something.
Now we can finally push the searchBar out again. I also reset count and set backPush back to NO.
The else if is also pretty important. It checks if count is 0 or 1, or if the searchBar has the keyboard showing. If count is 0 or 1 when it reaches here, it means that the first if-statement failed, e.g that the searchBar wasn't hidden, or that it was scrolled far up.
(When I think of it, the else-if should check if backPush is YES as well. Now it sets those variables repeatedly)
Let me know if you find a better way!
I think this one is simple solution. Thanks to
Sti
for giving some ideas to solve this bug.
Initialize variable var hideSearchBar = false
and inside viewDidLayoutSubviews add this code for maintain same content offset.
if hideSearchBar == true {
self.tableView.contentOffset = CGPointMake(0, self.tableView.tableHeaderView!.bounds.height - self.tableView.contentInset.top)
}
Finally implement below methods.
override func scrollViewDidScroll(scrollView: UIScrollView) {
if self.tableView.tableHeaderView!.bounds.height - self.tableView.contentInset.top == self.tableView.contentOffset.y && self.tableView.dragging == false {
hideSearchBar = true
}
else if self.tableView.dragging == true {//Reset hiding process after user dragging
hideSearchBar = false
}
}
func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
if self.tableView.contentOffset.y + self.tableView.contentInset.top <= self.tableView.tableHeaderView!.bounds.height
{
self.tableView.contentOffset = CGPointMake(0, self.tableView.tableHeaderView!.bounds.height - self.tableView.contentInset.top)
}
}
Try to set for TVC
self.automaticallyAdjustsScrollViewInsets = NO
This is a problem caused by hidesBottomBarWhenPushed = YES , if you uncheck Hide Bottom Bar On Push, the searchBar will not appear when VC back to TVC.
Try this in TableViewController.m:
- (void)viewDidLayoutSubviews{
[super viewDidLayoutSubviews];
[self hideSearchBar];
}
I can't explain why but I know that if hidesBottomBarWhenPushed = YES for UITabBarController to push vc, viewDidLayoutSubviews will be called more than once when the view appears again. First time subviews keep the same position, whereas the second time be called, subviews will be adjusted for some reason to relayout with the most original position, which is very weird. Do your custom layout in viewDidLayoutSubviews will prevent this to happen even after viewDidAppear.
My solution is a little stupid.
Add this method to the sample code.
- (void)viewWillLayoutSubviews
{
[self hideSearchBar];
}
It seems the tableView will redraw the scrollView inside it.
Since the tableView reset the contentOffset, I made a custom tableView has property to save the hidden status of search bar.Below is the code.Hope it helps.
//
// TableViewController.m
// SearchBarJump
//
// Created by Eyal Cohen on 3/9/14.
// Copyright (c) 2014 Eyal. All rights reserved.
//
#import "TableViewController.h"
#interface CustomTableView : UITableView
#property (nonatomic, assign, getter = isSearchBarHidden)BOOL searchBarHidden;
#end
#implementation CustomTableView
#synthesize searchBarHidden = _searchBarHidden;
- (void)layoutSubviews
{
[super layoutSubviews];
if (self.isSearchBarHidden) {
[self hideSearchBar:NO];
}
}
- (void)setSearchBarHidden:(BOOL)searchBarHidden
{
_searchBarHidden = searchBarHidden;
if (_searchBarHidden && self.contentOffset.y != self.tableHeaderView.frame.size.height) {
[self hideSearchBar:YES];
}
}
- (void)hideSearchBar:(BOOL)animated {
// hide search bar
[self setContentOffset:CGPointMake(0.0, self.tableHeaderView.frame.size.height) animated:animated];
}
#end
#interface TableViewController () {
NSInteger _rows;
}
#property (nonatomic, weak) IBOutlet CustomTableView *mainTable;
#end
#implementation TableViewController
#synthesize mainTable = _mainTable;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.view = _mainTable;
[_mainTable setDelegate:self];
[_mainTable setDataSource:self];
_rows = 3;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.mainTable setSearchBarHidden:YES];
}
- (void)hideSearchBar {
// hide search bar
[_mainTable setContentOffset:CGPointMake(0.0, self.tableView.tableHeaderView.frame.size.height) animated:NO];
}
- (IBAction)toggleCount:(UIBarButtonItem *)sender {
if (_rows == 20) {
_rows = 3;
} else {
_rows = 20;
}
[_mainTable reloadData];
}
- (IBAction)hideBar:(UIBarButtonItem *)sender {
[self hideSearchBar];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return _rows;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
cell.textLabel.text = #"cell";
return cell;
}
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
[_mainTable setSearchBarHidden:NO];
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
if (_mainTable.contentOffset.y == _mainTable.tableHeaderView.bounds.size.height) {
[_mainTable setSearchBarHidden:YES];
}
}
#end
UITableViewController always modifies its UITableviews content offset in its viewDidAppear to make sure that its all rows are visible. So your hacky methods don't work here.
There are several solution to this problem. The one I selected is shown below
First delete that searchBar from your storyboard.
#interface TableViewController () {
NSInteger _rows;
}
#end
#implementation TableViewController
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
_rows = 4; // +1 for searchBar
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
}
- (void)hideSearchBar {
// hide search bar
[[self tableView] scrollToRowAtIndexPath:[NSIndexPath indexPathWithIndex:1] atScrollPosition:UITableViewScrollPositionTop animated:NO];
}
- (IBAction)toggleCount:(UIBarButtonItem *)sender {
if (_rows == 20) {
_rows = 4;
} else {
_rows = 20;
}
[self.tableView reloadData];
}
- (IBAction)hideBar:(UIBarButtonItem *)sender {
[self hideSearchBar];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return _rows;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row == 0){
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,44)];
[cell addSubview:searchBar];
return cell;
}
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
cell.textLabel.text = #"cell";
return cell;
}
#end
The above solution just ensures that automatic scrolling magic is disabled.
If you want your default searchBar to be hidden override UITableView and call hideSearchBar when tableview is initially loaded for the first time.
I fix the bug just like this:
#interface NTTableView : UITableView
#end
#implementation NTTableView
-(void)setContentOffset:(CGPoint)contentOffset{
if (self.contentOffset.y==-20&&
contentOffset.y==-64) {
NSLog(#"iOS7 bug here, FML");
}else{
[super setContentOffset:contentOffset];
}
}
#end
Fix for my somewhat similar situation with a UISearchBar as the tableHeaderView. Not sure if this falls into the same exact scenario, but it hides the search bar when the view appears. (Being unconcerned with the amount of rows in the table view)
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:NO];
}
Setting edgesForExtendedLayout to [.top, .bottom] instead of just .top on TVC fixed problem for me.
Of course, automaticallyAdjustsScrollViewInsets is set to false
EDIT: seems that it only works if tvc.tabBar is translucent
As a weird hack I can only suggest to add an empty cell to the end of cells with height about 400
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return _rows + 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if(indexPath.row == _rows)
{
//cellEmpty - cell identifier in storyboard
cell = [tableView dequeueReusableCellWithIdentifier:#"cellEmpty" forIndexPath:indexPath];
}
else
{
cell.textLabel.text = #"cell";
}
// Configure the cell...
return cell;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row == _rows)
{
return 400;
}
else
{
return 44;
}
}
your output file
https://github.com/iDevAndroid/SearchBarJump
simply use this code don't make do complex for that
-(void)viewDidDisappear:(BOOL)animated{
[self.tableView setContentInset:UIEdgeInsetsMake(-0.3, 0, 0, 0)];
[super viewDidAppear:animated];
}
here is one problem if you are set UIEdgeInsetsMake(0, 0, 0, 0) the searchBar jumping as in original mode
I have a UITableView where I have section headers that can be tapped to expand or collapse the section. In my particular example each section only has one row, which is either visible (section expanded) or hidden (section collapsed).
As section header i'm using custom UITableViewHeaderFooterView - HeaderAccountView. I created *.xib file at Interface Builder , and set it custom class to my HeaderAccountView (still at IB field).
There are no any changes to init method or smth like this in my HeaderAccountView.h and HeaderAccountView.m files - only some functions to highlight self (selected section) etc.
in my main ViewController .m file
- (void)viewDidLoad
{
[super viewDidLoad];
.........
.........
UITableView *tableView = (id)[self.view viewWithTag:1];
UINib *nib= [UINib nibWithNibName:#"HeaderAccountView" bundle:nil];
[tableView registerNib:nib forHeaderFooterViewReuseIdentifier:#"HeaderCell"];
}
and then
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
HeaderAccountView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:#"HeaderCell"];
if (headerView==nil)
{ headerView = [[HeaderAccountView alloc]
initWithReuseIdentifier:#"HeaderCell"];
}
return headerView;
}
when i'm running project everything going OK - sections load with needed data in it, when section receive tap - it highlights (like standard cell).
But when i'm scrolling away tableview to bottom for example from selected highlighted section, and this highlighted section already is not visible at view - that section that just appeared from bottom - already highlighted!
I understand that its because it creates new instance of my HeaderAccountView with property BOOL selected set to YES.
But I'm new to objective-c (and coding) and don't understand how to correct resolve this.
I tried to use prepareForReuse method of my custom UITableViewHeaderFooterView like this
HeaderAccountView.m:
-(void) prepareForReuse
{
self.selectedBackground.alpha = 0;
}
It works better - but now i have another issue - when i returning to my first (truly) selected and highlighted section - it obviously don't highlight.
Thanks for any help and sorry if it elementary question.
You have to manually keep a list of your selected headers indexes.
Next, implement the method tableView:willDisplayHeaderView: in your view controller to refresh your header when it will be displayed.
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
{
view.selectedBackground.alpha = ([_highlightedHeadersList containsObject:#(section)] ? 0.0f : 1.0f);
}
And you have to add / remove indexes in _highlightedHeadersList.
I've done this using the following. In the table view controller I created a property (NSInteger), and called it sectionForSelectedHeader. Set it to -1 initially so no section will be initially selected.
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
RDHeader *header = [tableView dequeueReusableHeaderFooterViewWithIdentifier:#"Header"];
header.tag = section;
if (header.gestureRecognizers.count == 0) {
UITapGestureRecognizer *tapper = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(headerSelected:)];
[header addGestureRecognizer:tapper];
}
header.selected = (self.sectionForSelectedHeader == section)? 1 : 0;
return header;
}
-(void)headerSelected:(UITapGestureRecognizer *) tapper {
if ([(RDHeader *)tapper.view selected] != 1) {
self.sectionForSelectedHeader = tapper.view.tag;
}else{
self.sectionForSelectedHeader = -1;
}
[self.tableView reloadData];
}
Then in my custom header subclass, I have a method setSelected: (selected is an NSInteger property in the RDHeader class) like this:
-(void)setSelected:(NSInteger)selected {
_selected = selected;
if (selected) {
self.contentView.backgroundColor = [UIColor orangeColor];
}else{
self.contentView.backgroundColor = [UIColor yellowColor];
}
}
I have a viewcontroller.xib which contains View, buttons,toolbarbutton, text box and a tableview. When I load the initial screen comes without table view which is fine. Now when I click on a toolbarbutton say, viewtable, I want the view to move to tableview. I have filled my tableview data with some default objects like this:
- (void)viewDidLoad
{
tableData = [[NSArray alloc] initWithObjects:#"object1",#"object2",#"object3",#"object4", nil];
[super viewDidLoad];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [tableData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
cell = [tableView dequeueReusableCellWithIdentifier:#"My Cell"];
if(cell==nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"My Cell"];
}
cell.textLabel.text=[tableData objectAtIndex:indexPath.row];
return cell;
}
So when I click on toolbar view button it should show tableview with toolbar button which also has a back button so when I click on that it should hide the table view and show the initial view. Is it possible to do all this in single xib? I can achieve the result if I create another xib and simply transfer control over to that xib but I wanted to know if its possible do this without creating a second xib file. And also for navigation I can use navigation controller but I want to check and see if its possible to use toolbar to transfer the control. Thanks.
First check if your table view is inside your view, if not put it inside and set delegate of datasource to file owner, then in your view table method write this code
-(void)viewTable
{
self.tableView.hidden = NO;
self.viewToolbar.hidden=YES;
}
On your back button code in toolbar write
-(void)goback
{
self.tableView.hidden = YES;
self.viewToolbar.hidden=NO;
}
If you don't need animation then you can do the following
Get a handle of tableView in your interface like this:
#property(nonatomic,assign)IBOutlet UITableView *tableView;
Hide your table view in initially ( like in viewDidLoad method )
-(void)viewDidLoad
{
[super viewDidLoad];
self.tableView.hidden = YES;
}
Then in the method called by your toolbar's button do the following
-(void)on_click_toolbar_button
{
self.tableView.hidden = !self.tableView.hidden;
//This will keep toggling the table view from hidden to shown & vice-versa.
}
you could use the hidden property to achieve that. Put these in the appropriate ibaction methods.
_tableView.hidden = Yes;
_tableView.hidden = No;
I'd highly recommend to do this in two separate XIBs. The first should contain a UIViewController (your initial view) and the second a UITableViewController (your table view) class. Both should be handled by a UINavigationController - don't fight the API and try your own hacks if it's not necessary. The mentioned controller classes give you everything you need out of the box.
Well this is not recommended but you can do this by removing and adding tableview..
I currently have a table with 8 rows that each have a label on the right side and a button on the left. I was hoping that I could have all the buttons hidden until the user presses an "edit" button in the top right corner and then they would appear allowing the user to interact with each table cell. I don't know if this is possible, because they are in UITableViewCells or if there is an easier method to summoning a button for each cell
UPDATE
okay so I have placed in all the hidden properties and there seem to be no errors, but the app doesn't recognize any of it. The buttons remains unhidden despite the fact that they are set to be initially hidden. Here is my code
Here is my Table Cell code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"BlockCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.textLabel.text = #"Free Block";
UIButton*BlockButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
BlockButton.frame = CGRectMake(225.0f, 5.0f, 75.0f, 35.0f);
[BlockButton setTitle:#"Change" forState:UIControlStateNormal];
[BlockButton addTarget:self action:#selector(Switch:) forControlEvents:UIControlEventTouchUpInside];
Blockbutton.backgroundColor = [UIColor colorWithRed:102/255.f
green:0/255.f
blue:51/255.f
alpha:255/255.f];
Blockbutton.hidden = YES;
[cell addSubview:BlockButton];
return cell;
}
and here is my method code:
- (IBAction)Editmode:(UIButton *)sender
{
Blockbutton.hidden = !Blockbutton.hidden;
[self.tableView reloadData];
}
any thoughts or ideas as to what might be the issue?
You'll need to create a UITableViewCell subclass if you don't already have one. In that class, override setEditing:animated: and if the new value is YES, then enable/add/unhide the button.
- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
[super setEditing:editing animated:animated];
if (editing) {
// add your button
someButton.hidden = NO;
} else {
// remove your button
someButton.hidden = YES;
}
}
It would be optional, but you are encouraged to animate the change if animated is YES.
Note: this assumes you have the edit button already hooked up the change the editing mode of the UITableView. If you don't, call setEditing:animated: on the UITableView in the button action. This will automatically call setEditing:animated: on each visible table cell.
The trick here is to keep in mind that a table's cells are determined by cellForRowAtIndexPath:. You can cause that method to be called all over again by sending the table reloadData:.
So, just keep a BOOL instance variable / property. Use the button to toggle that instance variable and to call reloadData:. If, at the time cellForRowAtIndexPath: is called, the instance variable is YES, set the button's hidden to YES; if NO, to NO.
take a BOOL variable which defines the whether to show delete button or not, use this BOOL var to for btnName.hidden = boolVar, initially make boolVar = NO, when user taps on edit toggle bool var and reload the tableview.
Another option is to test if you are in edit mode in the cellForRowAtIndexPath method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = //(obtain your cell however you like)
UIButton *button = cell.button; //(get button from cell using a property, a tag, etc.)
BOOL isEditing = self.editing //(obtain the state however you like)
button.hidden = !isEditing;
return cell;
}
And whenever you enter editing mode, reload tableView data. This will make the table view ask for the cells again, but in this case the buttons will be set not to hide.
- (void)enterEditingMode {
self.editing = YES;
[self.tableView reloadData];
}