UIImage *image = [UIImage imageNamed:#"logo_header.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 10, 320, 28);
[self.navigationController.view addSubview:imageView];
I have added an image to my mainview using above code, how can I remove it from view so that it will not visible in next view?
I'm not sure that I understand the reason for doing this in the first place.
But you might set a tag value for this image view and then find it by that tag:
..
UIImage *image = [UIImage imageNamed:#"logo_header.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 10, 320, 28);
imageView.tag = 100001;
[self.navigationController.view addSubview:imageView];
// Why don't you release the image view?
[imageView release];
..
UIView *imageView = [self.navigationController.view viewWithTag:100001];
[imageView removeFromSuperView];
Not sure that all the code is correct - wrote it without XCode...
Related
Why is this image not being added to my UIScrollView? A white screen is being displayed:
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(self.scrollView.frame.size.width * 1, 0, self.scrollView.frame.size.width, self.scrollView.frame.size.height)];
imageView.backgroundColor = [UIColor redColor];
[imageView setImage:[UIImage imageNamed:#"placeholder.png"]];
[self.scrollView addSubview:imageView];
self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * self.urlArray.count, self.scrollView.frame.size.height);
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.scrollView.frame.size.width, self.scrollView.frame.size.height)];
Ans also give proper contentSize of UIScrollView and add UIScrollView to your UIView
We are using a base class where we set the background picture. That code looks like:
UIImage* image = [UIImage imageNamed:#"App_Background.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.contentMode = UIViewContentModeScaleAspectFill;
CGRect bounds = self.view.bounds;
int offset = 0;
imageView.frame = CGRectMake(0, bounds.size.height - image.size.height + offset, image.size.width, image.size.height);
imageView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin;
imageView.tag = BACKGROUND_TAG;
[self.view insertSubview:imageView atIndex:0]; // insert it behind all other views in NIB
self.background = [imageView autorelease]; // cleanup
If I want to use this as my superclass for another UIViewController but do not want to use the backgound, how do I do that? I thought I could do this in my subclass' viewDidLoad:
UIView *theBackgroundView = [self.view viewWithTag:BACKGROUND_TAG ];
theBackgroundView = nil;
But that doesn't work. Any thoughts? thanks.
Make sure you call [super viewDidLoad] first. Then do [[self.view viewWithTag: BACKGROUND_TAG] removeFromSuperview].
I can't set full image in navigation bar (or navigation controller ,in the top of app). there will be little space remaining in the left.And when I put info button it's not on the image. How can I fix it
here is my code,pls take a look
UIImageView* img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"headerBG.png"]];
img.frame = CGRectMake(0, 0, 320, 44);
self.navigationItem.titleView =img;
[img release];
UIButton * infoDarkButtonType = [[UIButton buttonWithType:UIButtonTypeInfoLight] retain];
infoDarkButtonType.frame = CGRectMake(0.0, 0.0, 25.0, 25.0);
infoDarkButtonType.backgroundColor = [UIColor clearColor];
[infoDarkButtonType addTarget:self action:#selector(showInfo) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *infoButton = [[UIBarButtonItem alloc] initWithCustomView:infoDarkButtonType];
self.navigationItem.leftBarButtonItem = infoButton;
[infoDarkButtonType release];
[infoButton release];
very thank you.
Me.
If you want the navigation bar to show an image cant you try this
#implementation UINavigationBar (CustomImage)
- (void)drawRect:(CGRect)rect
{
UIImage *image = [UIImage imageNamed: #"custom_nav_bar.png"];
[image drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
}
#end
Use this code line ot add image in NavigationController...
UIImageView* img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"headerBG.png"]];
img.frame = CGRectMake(0, 0, 320, 44);
[self.navigationController.navigationItem addSubView:img];
[img release];
now, you set image in Navigation..
I need so set the name of the UIViewController and an image to the navigationBar. So far I am able to display the image, but the title is of course missing.
// show image
UIImage *image = [UIImage imageNamed: #"bar_icon.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage: image];
imageView.frame = CGRectMake(0, 0, 40, 40);
self.navigationItem.titleView = imageView;
[imageView release];
Thanks for your help,
BR, doonot
// show image
UIImage *image = [UIImage imageNamed: #"bar_icon.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage: image];
imageView.frame = CGRectMake(70, 0, 40, 40);
// label
UILabel *tmpTitleLabel = [[UILabel alloc] initWithFrame:CGRectMake(120, 0, 100, 40)];
tmpTitleLabel.text = #"Mannschaft";
tmpTitleLabel.backgroundColor = [UIColor clearColor];
tmpTitleLabel.textColor = [UIColor whiteColor];
CGRect applicationFrame = CGRectMake(0, 0, 300, 40);
UIView * newView = [[[UIView alloc] initWithFrame:applicationFrame] autorelease];
[newView addSubview:imageView];
[newView addSubview:tmpTitleLabel];
self.navigationItem.titleView = newView;
[imageView release];
[tmpTitleLabel release];
Create a UIView with 2 subview: a UIImageView and a UILabel. Set the titleView to the UIView.
How i can set the frame size of UIImage.
You can set the frame of the UIImageView:
UIImageView* imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
imgView.image = [UIImage imageNamed:#"image.png"];
(and don't forget to [imgView release]; somewhere)
UIImage has no frame. It has only width and height. If you want to put it on your view you should create UIImageView
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(12,12,123,123)];
imageView.image = image; // image - your UIImage