I have a small problem with the UITableviewCell. i'm using the code:
UIView *cellBackView = [[UIView alloc] initWithFrame:CGRectZero];
cellBackView.backgroundColor = [UIColor colorWithPatternImage: [UIImage imageNamed:#"Navigation.png"]];
cell.backgroundView = cellBackView;
But look what happend ;
http://cl.ly/070f1C3n143v0W1Y2g2Q
Somebody know how to fix it?
That is because of the labels that are in the way (in front of the background)
add this and it should be fixed
cell.textLabel.backgroundColor = [UIColor clearColor];
Related
I have an UITableViewController to which I successfully applied in the past a gradient background, by sending the newly added subview to back:
//performed on viewDidLoad
UIView *bgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1.5*280, 1.5*SCREEN_HEIGHT)];
bgView.backgroundColor = [UIColor yellowColor];
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = bgView.bounds;
gradient.startPoint = CGPointMake(0, 0);
gradient.endPoint = CGPointMake(1, 1);
UIColor *topColor = UIColorFromRGB(0x229f80);
UIColor *bottomColor = UIColorFromRGB(0x621ad9);
gradient.colors = [NSArray arrayWithObjects:(id)[topColor CGColor], (id)[bottomColor CGColor], nil];
[bgView.layer insertSublayer:gradient atIndex:0];
[self.view addSubview:bgView];
[self.view sendSubviewToBack:bgView];
bgView = nil;
However, this no longer works in iOS 11 and the bgView is actually placed on top of all the cells.
Anyone knows how I can fix this?
Or maybe I was doing it wrong all the time?
If your cells are transparent then you can try self.tableView.backgroundView = bgView;
If you don't need the background view to be scrolling together with the table view, you can use
self.tableView.backgroundView = bgView;
If you need the background view to be scrolling, change layer's zPosition to a negative value to make it work in iOS 11:
[self.view insertSubview:bgView atIndex:0];
bgView.userInteractionEnabled = NO;
bgView.layer.zPosition = -1;
Another way to fix it is to call [self.view sendSubviewToBack:bgView]; in tableView:willDisplayCell:forRowAtIndexPath:
It works for not transparent cells also.
it appears that addSubview(UIView) sendSubview(toBack: UIView) no longer works for UITableViewControllers in iOS11. So I swap to this:
// in ViewDidLoad
// set the backgroundImage
let backgroundImage = UIImageView(frame: self.view.bounds)
backgroundImage.image = UIImage(named: "background.png")
// self.view.addSubview(backgroundImage) // NO LONGER WORKS
// self.view.sendSubview(toBack: backgroundImage) // NO LONGER WORKS
self.tableView.backgroundView = backgroundImage
I'm trying to change the color of NavigationBars title while I'm on a viewcontroller (not before pushing it). by using:
[[[self navigationController] navigationBar] setTitleTextAttributes:textAttributes];
But this line of code only works before pushes or pops. I was wondering if there is a way to force this without navigating?
I would say the simplest way is to create an UILabel with the same style you want for the UINavigationController title and set the label to the navigationItem.titleView.
Try this one
UILabel * label = [[[UILabel alloc] initWithFrame:CGRectMake(0,0,45,45)] autorelease];
label.textColor = [UIColor whiteColor];
label.backgroundColor = [UIColor clearColor];
label.text = self.navigationItem.title;
self.navigationItem.titleView = label;
create custom label and set it as titleView of your navigation bar
The inputAccessoryView is shown successfully, but it is totally black.
_textField = [[UITextField alloc] initWithFrame: CGRectZero]; // update frame later
_textField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
UIView *inputAccessoryView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 180)];
inputAccessoryView.backgroundColor = [UIColor blackColor];
inputAccessoryView.alpha = 0.2;
_textField.inputAccessoryView = inputAccessoryView;
I am completely confused over this... can anyone explain why it happens?
Use This method of UIColor on previous line instead of setting alpha:-
[UIColor colorWithHue:saturation:brightness:alpha:];
I am trying to create a view in iOS to let the user know their data is loading... it should have about a 200x200 Rounded-corner box in the middle with a spinner and the words "Data Loading..." and a transparent background.
This all is working except my 200x200 rounded-corner box is also transparent.
Here is the code I am using:
UIView *loadingDataView = [[UIView alloc] initWithFrame:CGRectMake(0, 44, 320, 367)];
loadingDataView.alpha = 0.4;
loadingDataView.backgroundColor = [UIColor clearColor];
UIView *viewWithSpinner = [[UIView alloc] initWithFrame:CGRectMake(110, 106, 100, 100)];
[viewWithSpinner.layer setCornerRadius:15.0f];
viewWithSpinner.backgroundColor = [UIColor blackColor];
UILabel *msg = [[UILabel alloc] initWithFrame:CGRectMake(5, 75, 90, 20)];
UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(5, 5, 90, 70)];
spinner.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite;
[spinner startAnimating];
msg.text = #"Data Loading";
msg.font = [UIFont systemFontOfSize:14];
msg.textAlignment = UITextAlignmentCenter;
msg.textColor = [UIColor whiteColor];
msg.backgroundColor = [UIColor clearColor];
viewWithSpinner.opaque = NO;
viewWithSpinner.backgroundColor = [UIColor blackColor];
[viewWithSpinner addSubview:spinner];
[viewWithSpinner addSubview:msg];
[loadingDataView addSubview:viewWithSpinner];
[self.view addSubview:loadingDataView];
Thanks.
No exactly an answer to your question, but check out the open source MBProgressHUD. It aims to be an open source replacement for the private UIProgressHUD class, and is exactly what you're trying to do.
The solution for your problem is that you should remove the alpha attribute of 0.4, that's what's turning your round view transparent, if your view is set to clearColor (this is not really a color, it just makes the view transparent) it makes no sense to add an alpha of 0.4. If what you want is a semi-transparent view surrounding your black rounded view, you should do the following:
[loadingDataView setBackgroundColor:[UIColor colorWithRed:1 green:1 blue:1 andAlpha:0.4]];
That will give you something whiteish kinda grayish, that should work.
However, I would recommend you to use the GIDAAlertView Class I developed, you can get the source and an example app on my GitHub:
It takes about 3 lines to get it working:
GIDAAlertView *spinnerAlert=[[GIDAAlertView alloc] initAlertWithSpinnerAndMessage:#"GIDAAlertView Spinner"];
//Show it ...
[spinnerAlert presentAlertWithSpinner];
//Later in your code, hide it
[spinnerAlert hideAlertWithSpinner];
This is how it looks like.
you are telling it to be clear...
loadingDataView.backgroundColor = [UIColor clearColor];
What do you want it to be black?
I'm trying for the past several hours to figure out how to do this, but with no luck. There are several potential solutions for this when searching Google, but nothing seems to work.
I'm trying to customize the background color of the standard UILabel that goes in a UITableViewCell (since I already customized the background color of the cell itself), but nothing I do seems to work.
I'm creating my own UILabel to customize the colors in -tableView:cellForRowAtIndexPath:
UILabel* label = [[[UILabel alloc] init] autorelease];
label.textColor = [UIColor blueColor];
label.backgroundColor = [UIColor redColor];
label.opaque = YES;
[cell.contentView addSubview:label];
cell.text = #"Sample text here";
But that doesn't work, and the resulting table view still has a bunch of cells with labels with black text and white background in it.
Any clues on what I am doing wrong here?
UPDATE: If I try to do the following instead:
UILabel* label = [[[UILabel alloc] init] autorelease];
label.textColor = [UIColor blueColor];
label.backgroundColor = [UIColor redColor];
label.opaque = YES;
[cell.contentView addSubview:label];
label.text = #"Sample text here";
I get a bunch of UITableViewCells with no text at all.
It appears that you're assigning the text to the cell instead of the label. You probably want:
label.text = #"Sample text here";
Also, you'll need to set the label's frame to what you require:
label.frame = CGRectMake(10,10, 80, 40);
or directly in the constructor:
label = [[UILabel alloc] initWithFrame:myFrame];
I wouldn't do this in code. I would do it with a custom XIB file and then load it in your
- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath
delegate function. That way you can design the XIB file to your exact specs, and tweak it.
Good luck!
You have asked this question before, and received correct answers;
How to customize the background color of a UITableViewCell?