This is maybe a simple question, but I don't have a clue the keyword i had to search for this...
I want to create a simple selector (I called it spinner in Android). This is what i want to achieve
Or it will take a whole screen if it's in ipod touch / iphone.
So, I have 3 button that represent filter (category, country, sort) for a ListView... and if I press one of the button, a popover / dialog should be appear to select the filter for each button.
thanks...
Please let me know if I need to add some information to make the question clear.
Its not so much typical that is it appearing.
Create a new UIViewController class with xib and adjust view size you want to display for combo box or popviewControoler. Then put navigation controller over and tableviewController.
And customize your UIViewController using its controller class. Controller class will be reponsible for displaying and selecting data.
Now in your MainViewController From where you want to show ComboBox or popviewcontroller.
declare popViewController instance variable,synthesize it.
implement a userdefined method here alloc your popviewcontroller class and assign it to popviewController instance variable of your class.
Then called it didSelectRowAtIndexPath.
When popover dismiss you set popViewController result in instance variable of this class so it can easily access in MainViewController class.
You can achieve combo box like functionality by adding a UItableView in a UIView and implement all the delegates of UITableView in that custom view.
Now you can add object of that custom UIView where ever you want that combo. Just you have to workout with some Frame setting.
Related
I have graphic that I would like to create as a UIAlertController? Can I create a xib and then call that file to present it? What is the best way to do this?
An alert is nothing but a presented view controller. So make your own view controller and call present. It's as simple as that.
You can create a subclass of UIView and its corresponding Xib.
Just create an instance whenever you need to use it and just add it as a subview.
And on the tap of close button just remove it.
Make sure that you create a method in the UIView subclass, which accepts the text, and the button titles, and call the method whenever you are adding it.
So you can add dynamic button titles or texts if the same popup is being used in multiple places in your application.
I want define a custom keyboard in my App,When I press one TabBar Item in my UITabBarController, then custom keyboard slide up， when I touch the the tabview, I hope the custom keyboard can slide down, But, Because the custom keyboard add in UITabBarController's view, and tableView add in UIViewController one of UITabBarController's ViewController, they are not in the same Class, How can I define the Keyboard, and add to which view?
I want to do like this:
When Press tab bar Item keyboard slide up,
http://i.stack.imgur.com/66NDu.png
When touch tableview, keyboard slide down.
http://i.stack.imgur.com/ZiHaR.png
Make a custom UIView with your custom keyboard buttons.
UITextField and UITextView have a property called inputView. If you set your custom view to this, iOS automatically takes care of resignFirstResponder and becomesFirstResponder messages on the text field.
This is the easiest way to use a custom keyboard.
Why are you declaring the custom keyboard in the UITabBarController class ? You can declare it in the view controller that is attached to that particular tabBarItem. If you add it to the that view controller, I am sure you can just make it resignFirstResponder or removeFromSuperView and manipulate it as you want.
Or you can just create a separate class for your customKeyboard, and add it along with your other classes. Simply include that class and create objects in other view controllers to manipulate them, and then release them. This is very easy and it is better programming compared to your approach, as at a later point of time, if you need to make changes or release 2.0 version of your app, it will come in handy and save some development time !
I've been looking everywhere but can't seem to find any examples/tutorials for my situation (not sure how to google it..)
So i have a window where a portion of it should be static (buttons and such) and there is a dynamic part (bottom leftish) that should change subviews.
So what i'm looking for is a way so that clicking the buttons in the static area will change the dynamic area to a view of my choice. I have no idea how to do this using the IB, but doing it programatically seems the only way. Any suggestions(I do not want to use a tab bar controller)?
Oh, and is there a benefit to making views and such programatically vs through the IB?
Thanks!
You can also achieve it programatically. Just create another viewcontroller class (as many as u want). In the loadView method of it create a UIView in the coordinates where u want to add the subview in the current view. Now create an instance of this viewcontroller class in the currentview controller and add it as a subview. You will get the subview at the desired location.If u want to change it dynamically create as many views and then add them to the array and change them whenever the button is clicked.
Hope this helps.
You should perform the switch in your view controller. The static buttons can have their actions hooked up to that controller (in IB), which can have an outlet (in IB) to the subviews and perform the swap.
As for when you should use IB, see this question.
You can do it from interface builder as well. You just need to take viewController from interface builder drag-n-drop to main window. assign IBAction to all buttons to add different viewController's view to main window just make their frame some smaller.
if u want to change or views by click on button then u chose segmentcontrol switch. and cod for each segment like as when click on segment 0 then open first sub view and when click on segment1 then open second sub view. And make by default unselected so that ur static view will appear initially lunching of view.
I want to implement a drop-down list in an iPhone application, the same like you might have seen in iBooks when you select PDFs/Books.
I have a slight idea how to implement it, just correct me if I am wrong:
Create the button
On a click event of the button define a CGRect and within the CGRect draw a LoadTableView
Load TableViewData at runtime.
Is that correct? If not, how should I do it?
Here's a much better/easier way to do it.
Create custom UITableViewController and associated nib. Use this class to encapsulate your tableView and data.
When the user clicks on your button, instantiate your custom view controller and display it modally using presentModalViewController:animated
When the user has selected an option from your popup view, call back to the parent view with the results.
Dismiss your table view with dismissModalViewControllerAnimated:
This is what iBooks does with a highly customized UITableViewController.
Are you looking for a UIPickerView?
This component gives you the possibility of selecting from a custom number of elements through a dedicate table view. Use it in conjunction with a UIActionSheet to get the best results.
I'll be using a datePicker several places in my app. I don't want to "clutter" up each and every viewController with the delegation methods for the UIPickerViewDelegate and UIPickerDatasource, plus I would be doing the same delegation methods over and over again.
Every time the datePicker is in play it's sole purpose is to slide halfway up the screen, let the user select a date and then disappear again.
I was contemplating a wrapper viewController (DatePickerViewController) that implemented the datePicker delegate methods, then did a NSNotification with the value which the user selected, which again was caught by the viewController instantiating the DatePickerViewController.
This would make me a decoupled datePicker and let the viewController instantiating the datePicker know nothing of a DatePickerDelegate, but just know that there would potentially come a notification containing an NSDate. Seems rational to me, like something I would do in other languages. But please correct me if Im digging myself a hole here:)
As I started breaking this down I ran into some difficulties, Im not very experienced in Objective C and Cocoa.
I can build a viewController that in it's viewDidLoad presents a datePicker, running just this will result in a blank white screen with a datePicker in the bottom half of the screen. If I use "presentModalViewController" from the viewController that instantiates the (custom) DatePickerViewController, it of course slides up and covers the whole screen. I would like for the user to still have half the view visible. Much like setting the time in an event in the iCal app. (except they push a new viewController onto the stack). Ahh just realized that what I mean is exactly like the keyboard when it slides in and covers half the screen.
So I guess my main problem is: can you build a viewController that behaves like the keyboard when added to a view. But do all this in the ViewController that is added instead of in the controller instantiating the view.
Hope it makes sense:)
Thank you
(1) Put the picker in a model (edit: should be modal) view. This is how the keyboard is implemented.
(2) The picker controller/delegate should only control the model view and the picker.
(3) In the delegate create two properties such as:
id *target;
Selector theSelector;
and a method like:
-(void) sendPickerResultsTo:(id) theTarget forSelector:(SEl) theSelector;
(4) Before displaying the picker model view, set the target to the calling controller and the theSelector to a method in the calling controller. You can configure the selector method to pass an arbitrary amount of data. It would look something like:
-(void) pickerResults:(NSArray *) pickerResults; //could pass any value as long as it's an object
[Note: this is kind of thing you define a protocol for if you use it a lot]
(5) When you have the picker value just have the picker delegate call:
[self.target performSelector:theSelector withObject:anArrayOfPickerResults];
(5) Add the appropriate method to any controller that needs to evoke the model picker view and set the controller as the target before you display the model picker view.
This will give you a self-contained model picker view that you can attach to any view and which can send its results to any arbitrary object that implements a method with the right signature i.e. implements the protocol.
This is basically a do it yourself version of UIControls addTarget:action:forControlEvents: