I would like to make vertical menu with offset which is calculated by position. Center row is more on right than others, like in picture. Also center row is marked as pressed. Can anyone suggest some sample how to achieve that? Now I am looking at iCarousel, but can't find how to make vertical carousel like this
As per your image displayed in question, it looks like you can use this custom tableview code.
Where in did select row method you can write your own logical code.
CustomCircularTableView
Hope this will work for you.
Enjoy Coding :)
Set the vertical property to true/YES; And you will probably need to set the carousel type to iCarouselTypeCustom. Then you can override the delegate methods:
- (CATransform3D)carousel:(iCarousel *)carousel itemTransformForOffset:(CGFloat)offset baseTransform:(CATransform3D)transform
- (CGFloat)carousel:(iCarousel *)carousel valueForTransformOption:(iCarouselTranformOption)option withDefault:(CGFloat)value;
- (CGFloat)carousel:(iCarousel *)carousel itemAlphaForOffset:(CGFloat)offset;
For an example I suggest looking inside iCarousel.m itself and following the example of iCarouselTypeWheel type. This will get very close to the effect you want, but you will need to add the custom highlighting code. For that, I suggest implementing the carouselCurrentItemIndexUpdated: method and updating the views there (setting background color etc.).
Related
I am displaying hundreds of thumbnails in my view . I know default way to handle tap on thumbnail is using UICollectionView delegate method "didSelectItemAtIndexPath" but since its many thumbnails i wanted to look into adding gestures to the screen position so when i tap on a particular spot on the screen, it will handle the event accordingly for that particular thumbnail underneath. I would like to know if it is a good/possible approach?
It would be a hell of a lot easier to use a UICollectionView.
If you need a custom layout then you can subclass UICollectionViewLayout and get some really cool dynamic layouts.
You also get the added bonus of dequeued cells meaning that you get better memory management using it.
You may find UIGestureRecognizer useful. A good tutorial to get you started is here.
I want to have a UISegmentedController but the user can choose the segment and change the text inside. Is there any way to do that?
Thanks.
EDIT: This is what I would like to do. I have users which choose an option using UISegmentedControl. Under settings, I would like to give them the opportunity to modify what the texts in the UISegmentedControl is. I can use a UITextField and a button which triggers the change but I didn't like that solution. I considered putting a UISegmentedControl image with UITextField inside each segment but that does not seem like an elegant solution. Besides, I have no idea what the font is being used in UISegmentedControl. If I am not mistaken, by default, you can only fit a maximum of 12/13 chars or else it can break. iOS 5 SDK has some more methods to customize so it may be possible.
I coded a solution which involves a preview of what the UISegmentedControl will look like, 2 textfields to replace the texts inside each segment and a button which saves the value. I scraped it because I did not like the implementation and I just didn't like the execution too. I wanted the users to feel like they are using the UISegmentedControl and able to edit the texts inside it, up to a max of 12/13 chars.
Thanks.
You can always dynamically change the values of the segmented controller in code. Would it be acceptable to have the user click the button, at which point you could pop up a form for the user to fill in with the new value, and then call this method on the segmented control:
- (void)setTitle:(NSString *)title forSegmentAtIndex:(NSUInteger)segment
I'm working on Map application that needs to work like original MapView on iOS.
I need to rotate mapview according to compass heading value. I tried MTLocation example also I also tried this answer But my results is not good.
Please see the screen shot.
When I rotate mapview according to heading value Map is rotating but as you can see on screen tiles is missing.
How can I solve this display problem ?
Regards
- Fatih
Hy,
I'm the author of MTLocation. Thanks for using it by the way!
For this to work you have to make sure, that your MKMapView is a subview of your ViewController's view (and not the view itself). Then you have to increase the frame of your mapView with a simple Pytaghoras - calculation: the width and height must be at least as big as the diagonal: sqrt(visibleWidth[320]^2 + visibleHeight[480-88]^2) = 506.
So that means
mapView = [[MKMapView alloc] initWithFrame:CGRectMake(-100,-100,520,520)];
Hope that helped, please consider upvoting if it fixed your problem.
You can consider using a bigger frame for the MKMapView object. It should probably be a square with each side equal to the length of the device's diagonal. The problem with this approach is that there are regions of this object that the user won't see but we process information like views for annotations related to that region anyway. Other properties like visibleMapRect would be least helpful.
Another alternative would be to be zoom in by scaling the MKMapView object on rotation. But this might make the map blurry (untested). You could zoom out on the region displayed in the map but it could lead to frequent refreshes. You can look at a middle ground where you don't zoom out until the map is rotated over a certain angle. You can also look at using two views where one of the views is off screen and updated so that it can replace the view after a certain amount of rotation so that it feels seamless.
I am working towards making my own maps application in iPhone. I want my maps to rotate as the user turns. I tried setUserTrackingMode available in iOS 5, but due to some reason it doesn't work. So I decided to take help of MTLocation framework here.
Till now I have done the following.
created a new project and copied all .m and .h files in that.
Import MapKit.h and MTLocation.h.
In Viewcontroller.h, defined property for mapView (should I define a property for locateMeItem).
In ViewDidLoad, paste the code given at the end of the page here.
I get a few errors:
Can't see the locateMe button when created programatically.
Undefined property headingEnabled.
myCustomSelector has no effect.
self.toolbar- toolbar is not a instance of ViewController.
I have tried a code at gist[dot]github[dot]com/1373050 too, but I get similar errors.
Can anybody explain a detailed procedure of this.
There are 20 images.
When scrolling the UIScrollView, I want to add the image to UIScrollView (one by one). How to do this ?
Please help me to do this.
Apple have sample code that shows how to do this, called "photoscroller":
http://connect.apple.com/cgi-bin/WebObjects/MemberSite.woa/wa/getSoftware?code=y&source=x&bundleID=20645
This was part of a WWDC 2010 presentation, and the accompanying video is very good at explaining why things are done like they are:
http://insideapple.apple.com/redir/cbx-cgi.do?v=2&la=en&lc=&a=kGSol9sgPHP%2BtlWtLp%2BEP%2FnxnZarjWJglPBZRHd3oDbACudP51JNGS8KlsFgxZto9X%2BTsnqSbeUSWX0doe%2Fzv%2FN5XV55%2FomsyfRgFBysOnIVggO%2Fn2p%2BiweDK%2F%2FmsIXj
1°) You need to use the contentOffset property which will indicate you where on the scrollView you are (try to do some NSLog, you should understand ;-))
2°) Then combine this property with a delegate method of UIScrollViewDelegate to know when a scroll occurred.
3°) Third in the function you calculate the images needed to be printed (with the property in the first step).
And finally you add the images !
I need to display a progress of loading of item's children. Please advise how to implement a progress indicator like it's done in Mail application:
(source: quicksnapper.com)
P. S. Here a source code of using indicator sub-views: http://snippets.dzone.com/posts/show/7684
This is harder than it should be, because Apple does not provide an NSProgressIndicatorCell. While table and outline views support the idea of custom cells being displayed within them, they are not set up to easily support custom subviews.
So the trick becomes, how do you get a a complete NSProgressIndicator view to display and animate at the desired spot in your window, without the ability to actually install it in the table view row?
The trick I've used is to literally install the NSProgressIndicator as a subview of the outline or table view itself. To find the location to add the subview, so it looks like it's "in the row", use the frameOfCellAtColumn:row: method. You can then position your progress indicator within that location of the outline view. When you're done spinning the progress indicator, you probably don't want to show it any more, so just remove it from its superview and discard it.
You will want to make sure you set the required autosizing flags on the progress indicator, so that it floats in the correct direction when/if your outline view is resized.
I'm sure there are other hacks like this to achieve the desired end result. I don't think there is any super-clean way to accomplish this trick.
Vienna is an open-source (Apache license) feed reader that has this in its source list. You should look at the Vienna source code to see how they did it.
Viena's implementation is not perfect. Add a feed to a folder then as it is loading and the progress indicator is busy collapse that folder. You will see the progress indicator still running in the same location.