So, when I do this with a regular old view:
UIView *topBlock = [[UIView alloc] initWithFrame:CGRectMake(0,-frameSize.height, frameSize.width, frameSize.height/2)];
[viewController.view addSubview:topBlock];
topBlock.autoresizesSubviews = NO;
topBlock.clipsToBounds = YES;
UIImage *topImage = [UIImage imageNamed:#"BloktLayout"];
UIImageView *topImageView = [[UIImageView alloc] initWithImage:topImage];
topImageView.frame = viewController.view.frame;
[topBlock addSubview:topImageView];
I get the nice old image where I want it, in the top view. But the middle view is a UILabel, and when I try the same thing:
UILabel *midBar = [[UILabel alloc] initWithFrame:CGRectMake(midBarOrigin.x, midBarOrigin.y, midBarWidth, midBarHeight)];
midBar.text = #"Blokt";
midBar.textColor = [UIColor blackColor];
midBar.textAlignment = NSTextAlignmentRight;
midBar.font = [UIFont fontWithName:#"HelveticaNeue-UltraLight" size:80.0f];
[viewController.view addSubview:midBar];
midBar.autoresizesSubviews = NO;
midBar.clipsToBounds = YES;
UIImage *midImage = [UIImage imageNamed:#"BloktLayout"];
UIImageView *midImageView = [[UIImageView alloc] initWithImage:midImage];
midImageView.frame = viewController.view.frame;
[midBar addSubview:midImageView];
I don't see any image at all in the UILabel. Any help?
Seems like the issue is related to your frames.
Tough to say without additional info. Can you post viewController.view.frame, frameSize, and midBarOrigin / midBarWidth / midBarHeight?
In the second codeblock, midBar.clipsToBounds == YES, but it looks like the midImageView.frame is likely very different / outside of midBar.frame in which case it wouldn't be visible.
Edit Some screenshots would help but aren't necessary
Edit 2 Note that subviews' origin points are always relative to the coordinate system of their superview, never relative to the coordinate system of any other view in the view heierarchy. This is likely the heart of the issue here. If you do want to convert CGPoints or CGRects from one coordinate system to another there are methods on UIView such as convertRect: and convertPoint: etc.
Interface Builder doesn't even let you add a control inside of a UILabel.
Instead, if you wish to group multiple controls, you can add them both as subviews of a UIView.
In other words, your image view and label can share the same superview, but the image view cannot be a subview of the label.
If they share the same superview, you can position the image view behind the label, and it should appear "through" the label as long as the label's background is clear.
Simple Way to do.....
You can add UIImageView, UILabel as subview of cell.textLabel
UIImageView *statusImage = [[UIImageView alloc] initWithFrame:CGRectMake(0, 4, 8, 8)];<br/>statusImage.backgroundColor = [UIColor redColor];<br/>
statusImage.layer.cornerRadius = 4;<br/>
statusImage.clipsToBounds = YES;<br/>
[cell.textLabel addSubview:statusImage];<br/>
UILabel *Lbl = [[UILabel alloc] initWithFrame:CGRectMake(15, 0, cell.textLabel.frame.size.width - 15, cell.textLabel.frame.size.height)];<br/>
Lbl.text = #"xyz";<br/>
[cell.textLabel addSubview:Lbl];<br/>
I just had this problem as well.
I found that ImageView was behind the label.
When I replaced label with UIView, it works properly.
Related
I have a UIImageView as the background view of my table view. When there is no data for the table, I am adding a UILabel as a subview of the image view. I am having trouble getting the label centered though. The label is always off to the right.
UIImageView *backgroundImageView = [[UIImageView alloc]initWithFrame:self.tableView.frame];
backgroundImageView.image = [UIImage imageNamed:#"background"];
backgroundImageView.center = self.tableView.center;
self.noLocationsLabel = [[UILabel alloc]initWithFrame:backgroundImageView.frame];
self.noLocationsLabel.center = backgroundImageView.center;
self.noLocationsLabel.text = #"No saved locations";
self.noLocationsLabel.textAlignment = NSTextAlignmentCenter;
self.noLocationsLabel.textColor = [UIColor blackColor];
self.noLocationsLabel.font = [UIFont fontWithName:#"Chalkboard SE" size:24.0];
self.tableView.backgroundView = backgroundImageView;
if (self.locationsArray.count == 0) {
self.navigationItem.rightBarButtonItem.enabled = NO;
[self.tableView.backgroundView addSubview:self.noLocationsLabel];
self.tableView.userInteractionEnabled = NO;
}
If your image frame is say 50,50,50,50, then your label will also be 50,50,50,50, but since it's a subview of the image view, it will never be in the center. Same concept applies to center. Center is only in respect to the views superview.
In order to make it center you could set the frame like:
CGRect rect = CGRectMake(0,0,backgroundImageView.frame.size.width,backgroundImageView.frame.size.height);
self.noLocationsLabel = [[UILabel alloc]initWithFrame: rect];
Or perhaps even:
self.noLocationsLabel = [[UILabel alloc]initWithFrame: backgroundImageView.bounds];
Edit:
You can use center on subviews. But you have to set the correct center.
self.noLocationsLabel.center = CGPointMake(CGRectGetMidX(backgroundImageView.bounds),CGRectGetMidY(backgroundImageView.bounds));
Difference between frame and bounds
I am having trouble adding a subview above the CALayer of its parent view.
I tried to attach an image to show what i mean but i dont have enough reputation so here is a link to the image:
http://imageshack.us/photo/my-images/843/img0219u.png/
Part of the subview is obscured by the parent views border.
How can i make the subview appear over the top of the parent views layer?
Any help is appreciated.
Here is my code if it helps:
Code for adding layer:
UIView *student = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 100, 100)];
student.backgroundColor = [UIColor grayColor];
CALayer *studentLayer = [[CALayer alloc] init];
studentLayer.borderColor = [UIColor grayColor].CGColor;
studentLayer.borderWidth = 5;
student.layer.borderColor = studentLayer.borderColor;
student.layer.borderWidth = studentLayer.borderWidth;
Code for adding subview:
UILabel *ilp = [[UILabel alloc] initWithFrame:(CGRectMake(-20, -10, 40, 20))];
ilp.text = #"ILP";
ilp.backgroundColor = [UIColor yellowColor];
ilp.textColor = [UIColor blackColor];
ilp.textAlignment = NSTextAlignmentCenter;
[student addSubview:ilp];
Thats not possible so far, The best solution i can think of is that add both the subview and its parent view inside another view than its just a matter of reordering two subviews, so that your subview is above the other and its border.
Hope that help!
I'm developing a iOs app for iPad and I'm implementing a UIImageView inside a UIView. The problem is that if the position of the image view has a position out of the UIView that it is inside, you can see it. The code:
UIView *vistafunda = [[UIView alloc] initWithFrame:CGRectMake(512/2, 48, 525, 651)];
[self.view addSubview:vistafunda];
vistafunda.backgroundColor = [UIColor darkGrayColor];
UIImageView *img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"hola.png"]];
img.center = CGPointMake(12, 200);
[vistafunda addSubview:img];
I would like that the image view was always under the view, so if the image is outside the view you could not see it.
Thanks!
Just make the containing view clip it's children
vistafunda.clipsToBounds = YES;
I have a UITableView, and currently it has a single cell in it. I have written a custom TableViewCell class which inherits from UITableViewCell in order to do some custom drawing. I have set the width of the table to the desired size, and am trying to set the width of the cell to the same size, so it will fill up the entire width of the table. The problem seems to be that I'm getting some margins on the left and right sides of the cell, and I don't know why.
Here's an example of the problem.
I made the TableView background black to be more clear. The TableView is the correct size. The background image is added to the cell, not the table, and it should be taking up the full width of the table.
I have tried making the TableView wider (as wide as the screen) to try to accommodate the size of the background image, but that doesn't quite do it. I would rather just figure out where these margins are coming from, and how I can get rid of them.
The TableView itself is initialized in Interface Builder. The style is set to Grouped, scrolling is disabled, and the view mode is set to Scale To Fill.
Here's the cell class' initWithStyle method
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
// Initialization code
_primaryLabel = [[UILabel alloc] init];
_primaryLabel.textAlignment = UITextAlignmentLeft;
_primaryLabel.font = [UIFont systemFontOfSize:18];
_primaryLabel.backgroundColor = [UIColor clearColor];
_detailLabel = [[UILabel alloc] init];
_detailLabel.textAlignment = UITextAlignmentLeft;
_detailLabel.font = [UIFont systemFontOfSize:12];
_detailLabel.backgroundColor = [UIColor clearColor];
_icon = [[UIImageView alloc] init];
[self.contentView addSubview:_primaryLabel];
[self.contentView addSubview:_detailLabel];
[self.contentView addSubview:_icon];
self.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
UIImageView* whiteDisclosureView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 15, 13)];
[whiteDisclosureView setImage:[UIImage imageNamed:#"white_disclosure.png"]];
self.accessoryView = whiteDisclosureView;
UIImageView * background = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 305, 61)];
[background setImage:[UIImage imageNamed:#"button_silver.png"]];
[self setBackgroundView:background];
self.backgroundColor = [UIColor clearColor];
self.frame = self.contentView.frame = CGRectMake(0, 0, 305, 61);
}
return self;
}
Is your tableView using "grouped" style? With grouped style, iOS normally adds left and right margin for the table cells.
It may be possible to remedy this by adjusting the frame of the tableView to slightly outside its superview. See here for example in previous question
You shouldn't explicitly set your cell's frame (size), but declare its style. (If you don't do that already) The cells are designed to automatically take up the whole space. (Horizontally)
cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
If not when allocating your cell, how do you set the cell's frame?
EDIT: Instead of using hardcoded frame sizes, use self.frame. Additionally, remove the last statement where you set the frame.
Another alternative solution I used.
#jonkroll's solution does work but it does not fulfil my need. I have a header section in the table view which I want to keep the margin left and right as is, but want to remove them on the normal cell.
The solution I did is to implement a layoutSubViews method in a custom table view cell. Within this method, set the contentView's width equal to table cell's width.
-(void)layoutSubviews {
self.contentView.frame.size.width = self.frame.size.width;
}
This may be very late, but I think some people will run into the same problem as well. Hope this solution works for you guys : )
I have a label (many labels in fact) now I want an image in the background of my label (same image) so that text writtenin my label is shown to user. How to do it programmatically?
The simplest way would just be to simply layer a UIImageView behind the UILabel. If you wanted to make it more robust you could make a UILabel subclass that exposes a method or property to set the image background and it would add the image to itself.
CGPoint labelPos = CGPointMake(123, 234);
UIImage *theImage = [UIImage imageNamed:#"button_bg.png"];
UIImageView *theImageView = [[UIImageView alloc] initWithImage:theImage];
theImageView.frame = CGRectMake(labelPos.x, labelPos.y, theImage.size.width, theImage.size.height);
UILabel *theLabel = [[UILabel alloc] initWithFrame:CGRectMake(labelPos.x, labelPos.y, 100, 50)];
theLabel.backgroundColor = [UIColor clearColor];
// ...label config...
[self.view addSubview:theImageView];
[self.view addSubview:theLabel];
[theImageView release];
[theLabel release];