Tableview cell separating line disappears when tapped - ios

I have a UITableView with custom tableview cells with the separator line between each cell. I recently began implementing multi cell selection when in editing mode. In order to have the blue circled checkmarks when each cell is selected, I changed cell selectionStyle from UITableViewCellSelectionStyleNone to UITableViewCellSelectionStyleDefault. To get rid of the gray shade when the cell is selected I just implemented a white background like this:
UIView * cellBackgroundView = [[UIView alloc] initWithFrame:cell.frame];
cellBackgroundView.backgroundColor = [UIColor clearColor];
cell.multipleSelectionBackgroundView = cellBackgroundView;
cell.selectedBackgroundView = cellBackgroundView;
The problem is that when I'm not in edit mode, the separator line disappears whenever the cell is selected, but when I select a cell in edit mode, the line remains. Any idea how to resolve this so the separator always remains?

try following:
Add this lines
[tableView deselectRowAtIndexPath:indexPath animated:YES];
[tableView reloadRowsAtIndexPaths:#[indexPath]
withRowAnimation:UITableViewRowAnimationAutomatic];
at the begining of didSelectRowAtIndexPath
this is weird bug which exists since iOS7.0

I know that the cell separator disappearing is a common issue, but none of the current solutions seemed to solve my problem so I came to the conclusion that I would need to toggle my selectionStyle to UITableViewCellSelectionStyleNone when my tableView is not in editing mode and UITableViewCellSelectionStyleBluewhen I'm in editing mode. I was able to achieve this by calling the following in my view controller containing my table view:
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if(tableView.editing)
{
[((customTableViewCellClass*)[tableView cellForRowAtIndexPath:indexPath]) changeSelectionStyle:YES];
}
else
{
[((customTableViewCellClass*)[tableView cellForRowAtIndexPath:indexPath]) changeSelectionStyle:NO];
}
return indexPath;
}
Then in my custom tableviewcell class I call the following:
-(void) changeSelectionStyle: (BOOL) selected
{
if(selected)
{
self.selectionStyle = UITableViewCellSelectionStyleBlue;
}
else
{
self.selectionStyle = UITableViewCellSelectionStyleNone;
}
}
In cellForRowAtIndexPath I left the code that changed the view for multipleSelectionBackgroundView
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UIView * cellBackgroundView = [[UIView alloc] initWithFrame:cell.frame];
cellBackgroundView.backgroundColor = [UIColor clearColor];
cell.multipleSelectionBackgroundView = cellBackgroundView;
cell.selectedBackgroundView = cellBackgroundView;
}

Related

UITableView change background color of specific cell

I want to change the color of a UITableView cell. I have this code but it doesn't work. Can someone explain to me why and what I should change?
[_myTableView cellForRowAtIndexPath : [NSIndexPath indexPathForItem:myIndexAsInt inSection:0]].contentView.backgroundColor = [UIColor greenColor];
To change the color of a standard UITableViewCell you need to do that by overriding the UITableViewDelegate method tableView:willDispayCell:forRowAtIndexPath: like so:
- (void)tableView:(UITableView *)tableView willDispayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
cell.contentView.backgroundColor = color;
}
If your cell has custom content you might want to have a slightly different implementation.
to set the 3rd cell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (indexPath.row == 2)
{
cell.contentView.backgroundColor = [UIColor redColor];
}
return cell;
}
The line of code itself is ok syntacticaly.
Some things cannot be verified from my side. Please put a breakpoint on that line and run it.
0) By putting a breakpoint there, and seeing the system stop there, you actually check that that line is executed.
1) If step 0 was ok, check that you actually have an instance of table view (it must NOT be nil, maybe if you are using nibs, you forgot to create an IBoutlet).
2) Make sure the tableView has proper delegate and datasource. (usually the ViewController where those things you mention are handled...)
3) check that you are passing a proper type and proper value for the myIndexAsInt argument. It should be of NSInteger type and should be equal 2.
4) If all 3 above are ok, perhaps you are calling it from a wrong place.
Let us know how it went.
You can have an variable to hold the index position. So after your didSelectRowAtIndexPath delegate called just set the index position in that variable and reload the table. Use a condition in cellForRowAtIndexPath datasource method to check for index position and now set the background colour for that specific cell.
in .h file:
NSInteger indexPos;
in didSelectRowAtIndexPath delegate:
indexPos = indexPath.row;
in cellForRowAtIndexPath:
if (indexPath.row == indexPos) {
cell.backgroundColor = [UIColor colorWithRed:255/255.0f green:255/255.0f blue:255/255.0f alpha:1.0f];
} else {
cell.backgroundColor = [UIColor colorWithRed:0/255.0f green:0/255.0f blue:0/255.0f alpha:1.0f];
}

ios7 UITableViewCell selectionStyle won't go back to blue

Xcode 5.0, iOS 7 and updating an existing app. UITableView selected row is now gray, not blue.
From what I've read they changed the default selectionStyle to gray. But "Blue" is still an option in IB and UITableViewCellSelectionStyleBlue still exists. Checking out the new HIG, it doesn't look like they removed the blue and the "Settings" app still using blue cell selection.
I've tried setting the value in IB and in code, but no luck. Any ideas on what I need to do to get the blue selection style back?
There is only one selectionStyle in iOS7, to change you need to do this manually like below:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
....
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor colorWithRed:(76.0/255.0) green:(161.0/255.0) blue:(255.0/255.0) alpha:1.0]; // perfect color suggested by #mohamadHafez
bgColorView.layer.masksToBounds = YES;
cell.selectedBackgroundView = bgColorView;
....
return cell;
}
I know this has already been answered but the last thing I wanted to do was touch all of my cellForRowAtIndexPath methods. So, I used an appearance proxy in my App Delegate. I took #null's code above to set the selected background view and in the applicationDidFinishLaunching:withOptions: method I placed this code.
UIView *bgColorView = [[UIView alloc] init];
//the rest of null's code to make the view
[[UITableViewCell appearance] setSelectedBackgroundView:bgColorView];
Then to make the white text hi light:
[[UILabel appearanceWhenContainedIn:[UITableViewCell class], nil] setHighlightedTextColor:[UIColor whiteColor]];
This made a global change in my app. The appearance proxy was introduced in iOS5 and Mattt has a great article on how to use it at his NSHipster blog.
Probably it could help you. I have my custom cell and to make it selected with needed color I have overwrite setHighlighted and setSelected now it's look like that
#define IOS_7 (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1 ? YES : NO)
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
[self changeSelectionColorForSelectedORHiglightedState:selected];
// Configure the view for the selected state
}
- (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated
{
[super setHighlighted:highlighted animated:animated];
[self changeSelectionColorForSelectedORHiglightedState:highlighted];
}
- (void)changeSelectionColorForSelectedORHiglightedState:(BOOL)state
{
if (IOS_7) {
if (state) {
self.contentView.backgroundColor = [UIColor blueColor];
}
}
}
I know I'm really late to the party, but I'll offer my IOS10 work around as well. Don't touch any of your other code, but add:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.backgroundColor = [UIColor blueColor];
cell.textLabel.textColor = [UIColor whiteColor];
... whatever else you do ...
}
-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(nonnull NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.backgroundColor = [UIColor whiteColor];
cell.textLabel.textColor = [UIColor blackColor];
}

Cannot change UITableView blue highlight color

I set:
cell.selectionStyle = UITableViewCellSelectionStyleGray;
and use the code to highlight a row:
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection: 0];
[self.tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone
The highlight color always blue even I set to gray. If I set:
cell.selectionStyle = UITableViewCellSelectionStyleNone;
it works fine and no highlight. But just not work with:
cell.selectionStyle = UITableViewCellSelectionStyleGray;
It just show blue color instead of gray color. Any idea? Thanks.
Implement it as follows:-
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *) indexPath {
[cell setSelectionStyle:UITableViewCellSelectionStyleGray];
}
OR
Set the selectedBackgroundView's color as what you want in your custom tableview cell (which is a subclass of UITableViewCell):
UIView * selectedBackgroundView = [[UIView alloc] initWithFrame:self.frame];
[selectedBackgroundView setBackgroundColor:[UIColor redColor]]; // set color here
[self setSelectedBackgroundView:selectedBackgroundView];
or you can configure it in -tableView:cellForRowAtIndexPath: method:
//...
[cell setSelectedBackgroundView:selectedBackgroundView];
//...
Note that in iOS 7, using
[cell setSelectionStyle:UITableViewCellSelectionStyleBlue];
will not work as expected, because in iOS 7 this is now gray, even if you pass the constant above. See:
https://developer.apple.com/library/ios/documentation/uikit/reference/UITableViewCell_Class/Reference/Reference.html#//apple_ref/c/tdef/UITableViewCellSelectionStyle
Just add this in your method its work for me
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
....
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor colorWithRed:(76.0/255.0) green:(161.0/255.0) blue:(255.0/255.0) alpha:1.0]; // perfect color suggested by #mohamadHafez
bgColorView.layer.masksToBounds = YES;
cell.selectedBackgroundView = bgColorView;
....
return cell;
}
if you have any question feel free to ask
Make sure to do this sort of configuration either in InterfaceBuilder or in the cellForRowAtIndexPath: method.
Make a global search of "UITableViewCellSelectionStyleBlue" to ensure you have not made a typo.

How to set custom background color of UITableViewCell even there's no data inside

I want to accomplish something like this :
see there's only one data but, background color continue until end.
I understand I can do inside tableview delegate of tableView:willDisplayCell:forRowAtIndexPath:. but then it doesn't go to empty cell, hence my empty cell always be white.
I used the following code to display cell alternative color even if cell is not initialized.I have done this work on scrollViewDidScroll as showing below:--
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
UIView *view=[[UIView alloc] initWithFrame:tblView.frame];
view.backgroundColor=[UIColor greenColor];
UIView *cellView;
int y=0;
int i=0;
for (UIView *view in tblView.subviews) {
if ([NSStringFromClass([view class]) isEqualToString:#"_UITableViewSeparatorView"]) {
cellView=[[UIView alloc] initWithFrame:CGRectMake(0, y, 320, 44)];
if (i%2==0) {
cellView.backgroundColor=[UIColor redColor];
}else{
cellView.backgroundColor=[UIColor greenColor];
}
[view addSubview:cellView];
i++;
}
}
tblView.backgroundView=view;
}
And got the correct result on scrolling table view. But the problem is it works when user scrolls the tableView atleast once a time.
If you will get success to fire event on tableView completes its reloading.Then it will be fine.
Here is output I got on scrolling tableView.
I also write this method to call didScrollMethod manually but doesn't seems to work perfectly.
[tblView.delegate scrollViewDidScroll:(UIScrollView*)tblView.superclass];
But calling method like code below absolutely works fine.
- (void)viewDidLoad
{
tblView=[[MyFirstView alloc] init];
tblView.delegate=self;
[tblView setFrame:self.view.frame];
[self.view addSubview:tblView];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
-(void)viewDidAppear:(BOOL)animated{
[tblView.delegate scrollViewDidScroll:(UIScrollView*)tblView.superclass];
}
Means after loading tableView in viewDidLoad call didScroll in viewDidAppear works fine.
Insert below code if fluctuates first row while scrolling.
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *view=[[UIView alloc] init];
return view;
}
You have to set the backgroundColor to the contentView of a UITableViewCell.
Sample as below:
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"identifier"];
if (cell==nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"identifier"]autorelease];
cell.contentView.backgroundColor= [UIColor greenColor];
}
return cell;
}
To have alternate colors in your cells of tableView, you can do the following;
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"identifier"];
if (cell==nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"identifier"]autorelease];
}
if(indexPath.row % 2)
{
cell.contentView.backgroundColor= [UIColor greenColor];
}
else
{
cell.contentView.backgroundColor= [UIColor yellowColor];
}
return cell;
}
A table with plain style doesn't show rows below the last row so there is no way to produce the desired effect using table view cells. About your only option would be to create a view with the alternating pattern and make the view the table view's footer view.
This view would need to deal with being updated as the number of actual rows in the table changes to/from odd and even. And you need to make it tall enough so if the user scrolls the table up a bunch, the footer still reaches the bottom of the screen.
You can setup some placeholder cells in addition to your cell with 'Monthly meeting', something like:
return amount of rows as 1 + (rows to fill screen) in the tableView:numberOfRowsInSection:
In the tableView:cellForRowAtIndexPath: - check for index path of the cell, if its row = 0, then this is your action cell, otherwise, update cells background, do the same in the tableView:willDisplayCell:forRowAtIndexPath:. Make sure to remove selectionStyle for your placeholder cells.
Or, you can use 2 cells - first one - again, your 'Monthly meeting' cell, and second one - a cell with height enough to cover screen from first cell to the bottom with image of striped cells.
This is simple to do. Just have as many items in your data source array as you want to see rows, and have all but the first one be empty strings. In willDisplayCell:forRowAtIndexPath: apply a background color to all the odd numbered cells.
- (void)viewDidLoad {
[super viewDidLoad];
self.theData = #[#"Monthly Meeting",#"",#"",#"",#"",#"",#"",#"",#"",#""];
[self.tableView reloadData];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.theData.count;
}
-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row % 2 == 1) {
cell.backgroundColor = [UIColor colorWithRed:232/255.0 green:238/255.0 blue:222/255.0 alpha:1];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
cell.textLabel.text = self.theData[indexPath.row];
return cell;
}
Set backgroundColor to the contentView of a UITableViewCell with the help of simple mathematics, Example:
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"identifier"];
if (cell==nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"identifier"]autorelease];
if (i%2==0) {
cell.contentView.backgroundColor= [UIColor greenColor];
}else{
cell.contentView.backgroundColor= [UIColor redColor];
}
}
return cell;
}

How can I prevent a button from disappearing while selecting a cell of TableView?

I have a custom cell in TableView and there is a button in the cell. When I select the cell, the background turns to blue and the button disappears. Is there any way to prevent this?
The cellForRowAtIndexPath like this -
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
MyTableCell *cell = (MyTableCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[MyTableCell alloc] initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
Search *current = [self.retrievedTweets objectAtIndex:indexPath.row];
cell.textLabel.text = current.text;
cell.textLabel.font = [UIFont systemFontOfSize:15.0];
cell.textLabel.numberOfLines = 2;
cell.detailTextLabel.text = current.name;
cell.imageView.image = current.userImage;
btnUncheck =[[UIButton alloc] initWithFrame:CGRectMake(400, 35, 20, 20)];
btnUncheck.backgroundColor = [UIColor redColor];
btnUncheck.layer.cornerRadius = 10;
btnUncheck.hidden =NO;
btnUncheck.tag=indexPath.row;
//[btnUncheck addTarget:self action:#selector(didSelectRowAtIndexPath:) forControlEvents:UIControlEventTouchUpInside];
[cell.contentView addSubview:btnUncheck];
return cell;
}
use custom image for selected table cell. or try with buttons images.
paste below line in your tableview Delegate Method
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
///// your code ///////////
cell.selectionStyle=UITableViewCellSelectionStyleNone;
//// your code////////
}
here your blue backgound will not display..
What you can do is this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{[tableView deselectRowAtIndexPath:indexPath animated:YES];}
Hope this helps
Also, if you have already implemented this, what else do you have in this delegate method?
Instead of this line:
btnUncheck = [[UIButton alloc] initWithFrame:CGRectMake(400, 35, 20, 20)];
use:
btnUncheck = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
[btnUncheck setFrame:CGRectMake(400, 35, 20, 20)];
Create a "custom" view with background color clear and set to it.
UIView* vista=[[[UIView alloc] init] autorelease];
vista.backgroundColor=[UIColor clearColor];
cell.selectedBackgroundView=vista;
The way to fix this right, is to create a custom cell that you then add a button to in the xib editor.
So, in xib editor, add a 'UITableViewCell' item. Then add the button to that cell item in the xib editor. You'll then attach your custom cell to the table in the corresponding .m file here:
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
I have tried this out with just a one row table and the custom cell tied as a property from the xib to the .h file that has the table view. The highlight is there and just grays out the button (still viewable). To get this to work with more rows is more involved. You'll need to load the custom utableviewcell xib and alloc your custom cell dynamically for that to work.

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