Im having troubles to set a imagebackground on a TTView.
Here is the code i found on internet, but it only shows a black square.
- (TTView *) monthBar {
if (!_monthBar) {
_monthBar = [[[TTView alloc] init] autorelease];
_monthBar.style = TTSTYLE(calendarMonthBarStyle);
_monthBar.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin;
TTImageView *imageView = [[TTImageView alloc]initWithFrame:CGRectMake(0, 0, 480, 20)];
[imageView setDefaultImage:[UIImage imageNamed:#"picture.png"]];
[self.monthBar addSubview:imageView];
[imageView release];
[self addSubview: _monthBar];
}
return _monthBar;
}
If someone knows how to solve it, please help me.
Thanks!
Using an imageView as subview of _monthBar should normally not be necessary. You should instead use the image as background in the style. Your style seems to be called calendarMonthBarStyle. You'll need to add a TTImageStyle referencing "picture.png" there.
Related
I have a TTTableViewController with a background image in which I insert items of type TTTableLink. Running the app if I drag the cells out of the screen by scrolling up and down for example, when they enter the screen again their background colour is changed to white. I have noticed this problem only in iOS5.
I don't really get when the background is changed, any ideas of how to preserve clear background for the table cells
Here is my code:
-(void) loadView {
[super loadView];
UIImage *backgroundImage = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"imageName" ofType:#"png"]];
UIImageView *backgroundView = [[UIImageView alloc] initWithImage:backgroundImage];
backgroundView.frame = CGRectMake(0, 0, 320, 416);
[self.view addSubview:backgroundView];
[self.view sendSubviewToBack:backgroundView];
[backgroundView release];
self.tableView.backgroundColor = [UIColor clearColor];
}
-(void) createModel {
TTListDataSource* listDataSource= [[[TTListDataSource alloc] init] autorelease];
TTTableLink *item = [TTTableLink itemWithText:itemName URL:targetURL];
[listDataSource.items addObject:item];
}
There's a pending pull request on three20 which fixes this issue. see https://github.com/facebook/three20/pull/689. post a comment on it, so the repo owner will merge it. I think he forgot about this project :-)
or you can either fix it by changing that line in your source code
I have a question regarding the implementation of loadView:
Right now, I have it like this:
- (void)loadView
{
image = [UIImage imageNamed:#"plan.gif"];
scrollView=[[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
imageView = [[UIImageView alloc] initWithFrame:
CGRectMake(0, 0,scrollView.frame.size.width + 40, scrollView.frame.size.height)];
imageView.image = image;
[imageView setContentMode:UIViewContentModeCenter];
scrollView.contentSize = image.size;
scrollView.maximumZoomScale = 3.0;
scrollView.bounces = NO;
scrollView.delegate = self;
// do any further configuration to the scroll view
// add a view, or views, as a subview of the scroll view.
[scrollView addSubview:imageView];
// release scrollView as self.view retains it
self.view=scrollView;
[scrollView release];
}
I suppose some of it should be in viewDidLoad:?
Thanks in advance.
This seems fine to me.
viewDidLoad is normally used as your hook after getting a view returned from IB. In this case you are essentially just doing the work of IB in code (setting up the view heirachy and configuring it).
Therefore in this case I think splitting out the logic may be superfluous unless it makes your code more readable.
I'm new to programming, and I know how to add a static image behind a tableView in a .xib file, but not in code. I have tried the following code:
UIImage * image = [UIImage imageNamed:#"pic.png"];
[self.view addSubView: image];
but nothing happens when I write this!
To display an UIImage you have to use an UIImageView and put it under the UITableView using the same frame. Don't forget to set the table view's background to transparent.
UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"pic.png"]];
iv.frame = CGRectMake(0.0, 0.0, 300.0, 600.0);
UITableView *tv = [[UITableView alloc] initWithFrame:iv.frame style:UITableViewStylePlain];
tv.opaque = NO;
tv.backgroundColor = [UIColor clearColor];
[self.view addSubView: iv];
[self.view addSubView: tv];
[iv release];
[tv release];
You need to use a UIImageView, not a UIImage. Also, when adding a view programmatically, don't forget to set the frame.
I've got a UIImageView in a page that gets its image from the Interface builder and I'm trying to put small icons on the top of it (it's a small map and I want to put icons on it). I know it's probably very simple but I tried to look it up in the documentation but it pretty much got me more confused.
Using Interface Builder, can't you just drag a UIImageView into an existing UIImageView? In effect, you end up with one UIImageView embedded within another.
You should also be able to easily set the hidden property of the "small map" UIImageView in code, depending on if that UIImageView is needed or not.
Hope this helps. Good Luck.
Let It Be Known
you could compose your own UIView by adding both the large and small UIViewImage views.
I have illustrated my approach below with the Pseudocode .
-(id) initwithFrame:(CGRect) frame
{
if(self = [super initWithFrame:frame])
{
iContainer = [[UIView alloc] initWithFrame:frame];
[iContainer addSubViews:iLargerUIImageView];
[iContainer addSubViews:iSmallUIImageView];
[self.view addSubViews:iContainer];
}
return self;
}
-(void) layoutSubviews
{
CGRect myRect = self.frame;
iContainer.frame = myRect;
//Give the location to iLargerUIImageView as per your requirement.
iLargerUIImageView.frame = CGRectMake(...,...,...,...);
//Give the location to iSmallUIImageViewas per your requirement.
iSmallUIImageView.frame = CGRectMake(...,...,...,...);
}
-(void) dealloc
{
[iContainer release];
[iLargerUIImageView release];
[iSmallUIImageView release];
}
try this code:
UIImageView *backgroundImageView = (UIImageView *)[self viewWithTag:kBckGndImag];
if(!backgroundImageView){
UIImage *imageName = [UIImage imageNamed:kpointsChartBig];
backgroundImageView = [[UIImageView alloc] initWithFrame:CGRectMake(15, 15, imageName.size.width, imageName.size.height)];
backgroundImageView.image=imageName;
[backgroundImageView setTag:kBckGndImag];
[pointImageView addSubview:backgroundImageView];
[backgroundImageView release];
}
UIImageView *foregroundImageView = (UIImageView *)[self viewWithTag:kForGndImage];
if(!foregroundImageView){
foregroundImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:kpointsColoredChartBig]];
foregroundImageView.contentMode = UIViewContentModeLeft;
foregroundImageView.clipsToBounds = YES;
[pointImageView addSubview:foregroundImageView];
[foregroundImageView release];
}
I am wanting to show a simple loading dialog when certain things are happening in my app. I figured I would just create a new view, add a label to that, and then set that view to a subView of my current view.
When doing this, I don't see anything!
Here is how I am writing my method:
- (void)showLoading {
UIView *loading = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
loading.backgroundColor = [UIColor blackColor];
UILabel *txt = [[UILabel alloc] initWithFrame:CGRectMake(198, 9, 94, 27)];
txt.text = #"Loading...";
txt.textColor = [UIColor whiteColor];
[loading addSubview:txt];
[super.view addSubview:loading];
[super.view bringSubviewToFront:loading];
[loading release];
[txt release];
}
Am I doing this completely wrong?
EDIT:
I added it to the viewDidLoad method, and it works how I want:
loading = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 200, 200)];
loading.backgroundColor = [UIColor blackColor];
UILabel *txt = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 94, 27)];
txt.text = #"Loading...";
txt.textColor = [UIColor whiteColor];
[loading addSubview:txt];
[txt release];
[self.view addSubview:loading];
[self.view bringSubviewToFront:loading];
But when loading it from a method, it seems to lag, and not show up for a bit.
Although this doesn't directly answer your question, I'd recommend grabbing MBProgressHUD from GitHub and using that in place of a static label. Looks better, less code for you to directly maintain, etc. You can find it at http://github.com/matej/MBProgressHUD
The way I use it is by creating a subclass of UITableViewController and defining a handful of methods to show and hide the HUD view. From there, I call each relevant method when I'm loading or done loading.
Specifically, I have four methods: -hudView, -showLoadingUI, -showLoadingUIWithText:, and -hideLoadingUI.
-hudView creates a new MBProgressHUD object if one doesn't already exist, and adds it to the current view ([self.view addSubview:hudView]).
-showLoadingUI calls -showLoadingUIWithText: with a default title, -showLoadingUIWithText: just unhides the MBProgressHUD and sets a label value for it (self.hudView.labelText = #"foo";).
-hideLoadingUI hides the hudView ([self.hudView hide:YES]).
First, I don't think UIView has method called init. You may just call the super of it. The appropriate method you should call is - (id)initWithFrame:(CGRect)aRect . The frame is the position, the size of the View you want to display. More here
Another thing is why you call [super.view addSubView:], I think it should be self.view, isn't it?