I have the following code to create a cell's background view as a rounded rectangle:
- (UIView *)createBackgroundView
{
CGRect background = CGRectMake(50, 25, self.frame.size.width - 60, 90);
UIView *backgroundView = [[UIView alloc] initWithFrame:background];
backgroundView.backgroundColor = [UIColor colorWithRed:0.78 green:0.96 blue:0.39 alpha:1];
[backgroundView.layer setCornerRadius:7.0f];
[backgroundView.layer setMasksToBounds:YES];
return backgroundView;
}
Later on in the program I want to update the backgroundView's backgroundColor, I've tried
cell.backgroundView.backgroundColor = [UIColor redColor];
in both cellForRowAtIndexPath and willDisplayCell and neither seems to update it.
The way you have to go about it is:
[cell setBackgroundView:[self createBackgroundView]];
Probably you should also add an argument to the method:
- (UIView *)createBackgroundView:(UIColor *)color;
Related
I use a UITableView and I want to setup a text at the beginning.
My code is:
UIView *tableHeaderView = [[UILabel alloc]initWithFrame:CGRectMake(0.0, 0.0, self.tableView.frame.size.width, 20.0)];
tableHeaderView.backgroundColor = [UIColor groupTableViewBackgroundColor];
UILabel *tableHeaderLabel = [[UILabel alloc]initWithFrame:CGRectMake(15.0,0,tableHeaderView.frame.size.width-15.0,tableHeaderView.frame.size.height)];
tableHeaderLabel.text = #"Countries";
if([UIFont respondsToSelector:#selector(preferredFontForTextStyle:)])
tableHeaderLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];
else
tableHeaderLabel.font = [UIFont boldSystemFontOfSize:14.0];
[tableHeaderView addSubview:tableHeaderLabel];
self.tableView.tableHeaderView = tableHeaderView;
[tableHeaderView bringSubviewToFront:tableHeaderLabel];
[tableHeaderLabel release];
[tableHeaderView release];
The problem is that the text isn't shown.
If I suppress the backgroundColor of the main header view, or if I replace it with a transparent one as if the Label awas under the main header view.
So I added the line:
[tableHeaderView bringSubviewToFront:tableHeaderLabel];
but this doesn't fix the issue.
I can't use the Label directly as the tableViewHeaderView directly becaus I want to left space at the left of the text.
Anybody have an idea to help me?
Thanks.
The only problem you have here is a typo in the first line, initialized an UIView wrongly as an UILabel. The compiler will not compliant as UILabel is a subclass of UIView.
I ran the following code and it worked as expected: (The code is for ARC, if you are not using it, don't forget to do the release!)
- (void)viewDidLoad {
[super viewDidLoad];
UIView *tableHeaderView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0,
self.tableView.frame.size.width,
20.0)];
tableHeaderView.backgroundColor = [UIColor groupTableViewBackgroundColor];
UILabel *tableHeaderLabel = [[UILabel alloc] initWithFrame:CGRectMake(15.0, 0,
tableHeaderView.frame.size.width - 15.0,
tableHeaderView.frame.size.height)];
tableHeaderLabel.text = #"Countries";
tableHeaderView.backgroundColor = [UIColor groupTableViewBackgroundColor];
if([UIFont respondsToSelector:#selector(preferredFontForTextStyle:)]) {
tableHeaderLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];
} else {
tableHeaderLabel.font = [UIFont boldSystemFontOfSize:14.0];
}
[tableHeaderView addSubview:tableHeaderLabel];
self.tableView.tableHeaderView = tableHeaderView;
}
I need a border to my textfield like the following image.how can i do that?
try these..
i hope it helps...
UITextField *txt=[[UITextField alloc]initWithFrame:CGRectMake(10, 100, 150, 30)];
[txt setBackgroundColor:[UIColor clearColor]];
[txt setPlaceholder:#"Hello my friend"];
[self.view addSubview:txt];
CALayer *border = [CALayer layer];
CGFloat borderWidth = 2;
border.borderColor = [UIColor redColor].CGColor;
border.frame = CGRectMake(0, -2, txt.frame.size.width, txt.frame.size.height);
border.borderWidth = borderWidth;
[txt.layer addSublayer:border];
txt.layer.masksToBounds = YES;
I found the answer my own.
just pass the textfield name to the following function
-(void)setBorderView:(UITextField*)textField
{
UIView *borderView = [[UIView alloc]init];
borderView.backgroundColor = [UIColor clearColor];
CGRect frameRectEmail=textField.frame;
NSLogVariable(textField);
borderView.layer.borderWidth=1;
borderView.layer.borderColor=[customColor colorWithHexString:#"8c8b90"].CGColor;
borderView.layer.cornerRadius=5;
borderView.layer.masksToBounds=YES;
UIView *topBorder = [[UIView alloc]init];
topBorder.backgroundColor = [customColor colorWithHexString:#"1e1a36"];
CGRect frameRect=textField.frame;
frameRect.size.height=CGRectGetHeight(textField.frame)/1.5;
topBorder.frame = frameRect;
frameRectEmail.size.width=frameRect.size.width;
[borderView setFrame:frameRectEmail];
[_textFieldBackGroundView addSubview:borderView];
[_textFieldBackGroundView addSubview:topBorder];
[_textFieldBackGroundView addSubview:textField];
}
I am creating a view below the textfield and setting the border to this view.Now i am creating another view with the same baground color and masking the top portion od the borderView.It is not practical in all situations.But for me,it works great.Thanks.
I have a UIButton that I have created, and I can successfully add it as a subview and see it on the screen. The problem is, when I try using:
[myButton setTitle:#"My Title" forState:UIControlStateNormal];
The button does not show a title when I run the app. If I NSLog the button's title after using the above method, it has in fact been set to the title that I'm passing in.
Here's my code. This is inside a UIView subclass. I realize that some of this logic might not belong in a UIView subclass but I'm just trying to get this to work as fast as possible:
// Set the view's frame, background color, corner radius
self.frame = CGRectMake(45, 200, 235, 187);
self.backgroundColor = [UIColor whiteColor];
self.layer.borderWidth = 1;
self.layer.borderColor = [UIColor grayColor].CGColor;
self.layer.cornerRadius = 5;
// Create the popup's body text label
self.popupBodyTextLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 100, 150)];
self.popupBodyTextLabel.text = #"Text goes here.";
// Add text view to popup's subviews
[self addSubview:self.popupBodyTextLabel];
// Create ok button
UIButton *myButton = [[UIButton alloc]initWithFrame:CGRectMake(0, 143, 120, 44)];
myButton.backgroundColor = [UIColor whiteColor];
myButton.layer.borderWidth = 1;
myButton.layer.borderColor = [UIColor grayColor].CGColor;
[myButton setTitle:#"OK" forState:UIControlStateNormal];
// Round the button's bottom left corner
UIBezierPath *myButtonMaskPath = [UIBezierPath bezierPathWithRoundedRect:myButton.bounds byRoundingCorners:(UIRectCornerBottomLeft) cornerRadii:CGSizeMake(5.0, 5.0)];
CAShapeLayer *okButtonMaskLayer = [[CAShapeLayer alloc] init];
myButtonMaskLayer.frame = myButton.bounds;
myButtonMaskLayer.path = myButtonMaskPath.CGPath;
myButton.layer.mask = myButtonMaskLayer;
// Add selector to button
[myButton addTarget:self action:#selector(myButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
// Add button to subviews
[self addSubview:myButton];
// Create the background view
self.backgroundView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
self.backgroundView.backgroundColor = [UIColor grayColor];
self.backgroundView.alpha = 0.5f;
// Show our new views
[[[UIApplication sharedApplication] keyWindow] addSubview:self.backgroundView];
[[[UIApplication sharedApplication] keyWindow] addSubview:[MPPopupView shared]];
The code for setting button title is right, so use this code to set title color
[myButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
I am trying to make a section footer of a UITableViewCell transparent and this is what I am doing right now:
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
UIColor *background = [UIColor clearColor];
UIImageView *imageView = [[UIImageView alloc] initWithImage:(UIImage *)background];
imageView.frame = CGRectMake(10,10,1,30);
return imageView;
}
But I am getting a problem from casting background to a UIImage. Is this possible in this way, is there a better way to cast it or am I simply going about this wrong? I am basically using the footer as a way to create a clear spacer between cells. Need some guidance on this.
This code will add clear footer to your section, where you can set the desired height to whatever you need. Below it has been set to 30, to match your code in the question.
-(UIView*)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{
UIView *footerView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width, 30)];
footerView.backgroundColor = [UIColor clearColor];
return footerView;
}
Instead of type casting the colour into the UIImage, use the backgroundColor property :
Try this :
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10,10,1,30)];
imageView.backgroundColor = [UIColor clearColor];
I want to build a totally transparent view, the backgroundColor maybe clearColor. Inside this view I want to put a small image. And in the four sides of this transparent view, I want to see the effect of shadow. The shadow must be totally outside the view. I know that I must override the drawRect method in UIView, but don't know how to do this.
try this....
UIView *shadowView = [[UIView alloc] initWithFrame:CGRectMake(50.0, 100.0, 100.0, 100.0)];
shadowView.layer.cornerRadius = 15.0;
CALayer *layer = shadowView.layer;
layer.shadowOpacity = 1.0;
layer.shadowColor = [[UIColor blackColor] CGColor];
layer.shadowOffset = CGSizeMake(0,0);
layer.shadowRadius = 15;
[self.view addSubview:shadowView];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, 50.0, 50.0)];
[imageView setImage:[UIImage imageNamed:#"icon.png"]];
[shadowView addSubview:imageView];
What is the problem with doing something like this?
#import <QuartzCore/QuartzCore.h> // at the top of the file
UIView *transparentView = [[UIView alloc] initWithFrame:CGRectMake(50,50,200,200)];
transparentView.backgroundColor = [UIColor greenColor];
transparentView.alpha = 0.5f;
transparentView.clipsToBounds = NO;
transparentView.layer.shadowColor = [UIColor blackColor].CGColor;
transparentView.layer.shadowOpacity = 1;
transparentView.layer.shadowRadius = 1;
UIImageView *imageView = [[]UIImageView alloc] initWithFrame:CGRectMake(50, 50, 50, 50)];
imageView.image = [UIImage imageNamed:#"IMAGE NAME"];
[transparentView addSubview:imageView];
As you can see, based on your description, no drawRect: required, unless for some reason you want to draw the shadow manually, but there isn't a reason to.