Under IOS 13, it appears it is not possible to change the background or tintcolor of segmented controls programmatically. My app that was operating correctly with a blue blackground and white tintcolor now appears in white/gray background and black tintcolor. The code to change the colors is executing and there are no errors.
Anyone have any ideas how to do this?
Using objective-C, have a tableview with an array of data elements consisting of Labeled segmented controls.
Set Value ...............YES NO
I can change the color of the Label element using
[ee setLabelColor:[UIColor blueColor];
but I can not figure out how to change the Segmented Control background or text color. Do I need to use attributes on the NSMutableDictionary?
NSMutableDictionary *dd = [[NSMutableDictionary alloc] init];
DataElement *ee;
ee = [[DataElement alloc] initSegmentedControlWithLabel:#"Set Value" defaultValue:[s intValue] items:[NSArray arrayWithObjects:#"No", #"Yes", nil]];
[ee setTextColor;[UIColor blueColor]];
[dd setObject:ee forKey:#"dataElement"];
[dd setObject:#"Set-Value" forKey:#"type"];
[aSpecific addObject:dd];
The tableview appears with the labels but the segmented control has the YES and NO in white/off white backgrounds.
In iOS 13, The the way to change the tint color (tinting both titles and images) is to call the segmented control's setTitleTextAttributes(_:for:) with a different .foregroundColor.
Related
How do you change the title color and/or bar tint color in a SKStoreProductViewController?
I'm using the appearance API to set navigation bars to a dark color and the text to white. It changes the title color but not the bar tint color in my SKStoreProductViewController.
I don't think you can. At least not on iOS 7. On iOS 6 you can use the UIAppearance protocol and the SKSPVC will pick up the appearance you set on the UINavigationBar.
As noted on this thread, the SKSPVC is a remote view controller so it's inaccesible programmatically, meaning that you can't set it's appearance directly (or indirectly?).
Do the following to avoid the SKStoreProductViewController to take over a tintColor of value WHITE:
#define kCOLOR_NON_WHITE_COLOR [UIColor darkGrayColor]
// CHANGE ALL TINTING BEFORE WE CREATE An INSTANCE OF THIS BROKEN PIECE
[UIWindow appearance].tintColor = kCOLOR_NON_WHITE_COLOR;
[UIView appearance].tintColor = kCOLOR_NON_WHITE_COLOR;
[UINavigationBar appearance].tintColor = kCOLOR_NON_WHITE_COLOR;
[UIBarButtonItem appearance].tintColor = kCOLOR_NON_WHITE_COLOR;
// NOW CREATE THE THING
SKStoreProductViewController *controller = [[[SKStoreProductViewController alloc] init] autorelease];
This draws all the UIBarButtonItems and the UISegmentedControls in this controller in the defined color AFAIK and thus makes the controller more like your apps design.
IMPORTANT: Just do not forget(!!!) to change all the tinting back after you dismissed this controller, otherwise fresh created views in your app might take over the enforced tinting.
UPDATE: As you might already have found out the following to manipulate the appearance does not work:
[UINavigationBar appearanceWhenContainedIn:[SKStoreProductViewController class], nil]
This fix is for iOS 7 & 8 on iOS 6 you have different issues. =)
My UIDatePicker's background is black (because the background for the whole screen is black probably), but I want white in the background for this UIDatePicker.
Is there any way to change the background color without subclassing it?
iOS 14 update
It looks that datePicker.backgroundColor doesn't work in iOS 14. It works. But you have to put it after preferredDatePickerStyle setting:
let picker = UIDatePicker()
if #available(iOS 13.4, *) {
picker.preferredDatePickerStyle = .wheels
}
picker.backgroundColor = .red
datePickerName.backgroundColor = [UIColor grayColor];
OBJECTIVE C
datePicker.backgroundColor = [UIColor greenColor]
SWIFT
DatePicker.backgroundColor = UIColor.blueColor()
DatePicker.setValue(UIColor.greenColor(), forKeyPath: "textColor")
DatePicker.setValue(0.8, forKeyPath: "alpha")
iOS 14 update
After iOS 14 setting background color this way
datePicker.backgroundColor = <# your bg color #>
doesn't work anymore.
So I'm using key value coding approach now:
datePicker.setValue(<# your bg color #> , forKey: "backgroundColor")
I had this same problem. I just created a UIView and put it behind the UIDatePicker
datePickerBackground = [[UIView alloc] initWithFrame:myDatePickerView.frame];
datePickerBackground.backgroundColor = [UIColor whiteColor];
[self.view insertSubview:datePickerBackground belowSubview:myDatePickerView];
I declared UIView *datePickerBackground; in my class. I reuse this same ViewController so I set datePickerBackground to nil on unLoad.
Simple follow these steps
First you set the delegate in your .h file like:
UIPickerViewDelegate, UIPickerViewDataSource
Then add that line where you created the datepicker
YourDatePicker = [[UIDatePicker alloc] init];
YourDatePicker.backgroundColor=[UIColor whiteColor];
In your case the color is white but you can change it to as you want.
Normally, I would say that UIDatePicker inherits from UIView and that you could set the background programatically via a line like yourDatePickerRef.backgroundColor = [UIColor whiteColor];, but it turns out that -- according to this related question -- UIDatePicker has a number of subviews inside of it, some of which are the backgrounds views.
It's these subviews that you need to set the background color to white (instead of clear or whatever it's currently set to).
Yes, it's a bit of a pain, but this makes UIDatePicker a potentially powerful object in terms of being able to customize the appearance of.
Why not add a plain UIView behind the picker. Set the view's background color to white. Give the view the same frame as the picker.
Note (based on your comment to Michael's answer):
Digging around the private subviews of a UIDatePicker is risky. It could break at any time. It is almost guaranteed that your solution will break for date pickers used on a device with a locale that doesn't use AM/PM since the picker will only have two components instead of three.
Is it possible to change the color of the divider? If so, how?
I've researched as much as possible here and on Google, without luck. I'm surprised it isn't more common...
Thanks
On iOS 7, the fix is to set the background color of your UISplitViewController to the same as the deep background color (probably black).
There is a quicker and better way of doing it. Just change spliViewController's view backgroundColor property:
splitViewController.view.backgroundColor = [UIColor greenColor];
In the detailViewController of the SplitViewController, I added the following code to cover up the black line. My custom header is blue and 88px tall.
//blue line that covers the vertical black separator in the header
UIView *blueHeaderSplitViewSeparatorMask = [[UIView alloc] initWithFrame:CGRectMake(320, 0, 2, 88)];
[blueHeaderSplitViewSeparatorMask setBounds:CGRectMake(320, 0, 2, 88)];
[blueHeaderSplitViewSeparatorMask setBackgroundColor:[UIColor colorWithRed:0.0f/255.0f green:96.0f/255.0f blue:182.0f/255.0f alpha:1.0f]];
[self.view.superview addSubview:blueHeaderSplitViewSeparatorMask];
You mean the one-point line between the left and right view controllers? No, UISplitViewController doesn’t expose a way to change that. You might try creating an opaque view with the same size as the split view controller’s view and its backgroundColor set to the color you want, then add it below the other two controllers’ views like this:
splitController.viewControllers = [NSArray arrayWithObjects:leftController, rightController, nil];
[splitController.view insertSubview:theBackgroundView atIndex:0];
I was wondering how I actually use background in normal tableview(non grouped). For example take a look at the clock app and the background there. Any ideas?
You can set the background of your table view using the same techniques as the grouped table view (something like self.tableView.backgroundView = anImageView;), but your cells' background are opaque and, therefore, will hide it.
You'll then have to set, in tableView:cellForRowAtIndexPath: the background color of your cells to clearColor [UIColor clearColor] and it's backgroundView to nil.
Run the app now, and there might still be something wrong: the background of the cell's labels is possibly also opaque (I say possibly because the cells might have picked up the cell background color and changed the background color of their subviews accordingly).
If it is the case, once again, in tableView:cellForRowAtIndexPath:, set the subviews's background color to clearColor.
You can also try to set image view with your own image as backgroundView:
UIImage *yourImage = ...
UIImageView *imageView = [[UIImageView alloc] initWithImage:yourImage];
self.tableView.backgroundView = imageView;
[imageView release];
I wanted to put a background image partially visible behind a list view. I created a list view in my nib with an image view behind it and made the list view background 20% opacity. This allows the background image to show thru but my text in the cells show a white background behind and if I create the cells in cellForRowAtIndexPath the cells have a white background too.
I am creating and setting the cell textLabel and the detailTextLabel in the cellForRowAtIndexPath event.
Not sure how to get rid of that, or if there is a better way to do the background image.
I had a similar issue and resolved it by setting the cell.contentView.backgroundColor to [UIColor clearColor] in cellForRowAtIndexPath.
If you did not want to make the whole cell transparent but the labels only, you can set the backgroundColor attribute of the textLabel and detailTextLabel to clear as well:
cell.textLabel.backgroundColor = [UIColor clearColor];
To set the background image of a table at run time rather than in a nib you can create a new UIColor from an image. Like so:
UIImage *img = [UIImage imageWithContentsOfFile: someFilePath]; // get your background image
UIColor *backgroundColor = [[UIColor alloc] initWithPatternImage: img];
[myTable setBackgroundColor: backgroundColor];
[backgroundColor release];