In my Universal App I have a long UITableView with custom cells..and for some cells I may need to show some long pop-up explanaiton about that cell when for instance user clicks a "i" label on the cell. In iPad popover view seems excellent choice for this, but don't know how can I implement this on iPhone, what are the possibilities? Also I want to spend as less time as possible when making it work for iPad- popover view. I want to re-use some of the code or logic i use on iPhone
Things came up to my mind;
-Show explaination in alert shild, but the current look and feel of alert shield is ugly can I customize it however I like and show wherever I line on screen and if I can make it scrollable;
-Or maybe I can make a uitextview to show on top, but then how will I dismiss it, I will need some buttons there..which sounds tricky.
-UIActionsheet with a uitextview on it, is reasonable here?
Also I found this code in S.O but dont know how to use this in my case;
newView.frame = CGRectMake(60, 140, 200, 200);
[parentView addSubview:newView];
Have a look at http://iosdevelopertips.com/open-source/ios-open-source-popover-api-for-iphone-wepopover.html. It's a Popover component for iPhone. I think it works best in your case. You can Google "iphone popover" for more options.
We built an open source library for iPad-like popovers on iPhone allowing you to customise the look and feel of the popovers and place any view or controller inside it.
Watch the project on Github and download it at http://www.50pixels.com/blog/labs/open-library-fppopover-ipad-like-popovers-for-iphone/
On dismissing it, see the following instructions:
Know when a new popover is displayed
- (void)presentedNewPopoverController:(FPPopoverController *)newPopoverController
shouldDismissVisiblePopover:(FPPopoverController*)visiblePopoverController;
Use this delegate method to know when a new different popover is displayed. If you want to dismiss the old popover, and release it, send the dismiss message inside this method.
- (void)presentedNewPopoverController:(FPPopoverController *)newPopoverController
shouldDismissVisiblePopover:(FPPopoverController*)visiblePopoverController
{
[visiblePopoverController dismissPopoverAnimated:YES];
[visiblePopoverController autorelease];
}
Know when the popover is dismissed
- (void)popoverControllerDidDismissPopover:(FPPopoverController *)popoverController;
Use this delegate method to know when the popover is dismissed. This could happen when the user taps outside the popover or when a dismiss message is sent by other actions.
Typically if you used a UIPopover on the iPad you use present a Modal view controller on the iPhone.
So if you create a subclass of UIViewController (e.g. called MyViewController), with the necessary subviews such as a UILabel.
MyViewController *infoViewController = [[MyViewController alloc] init];
//pass data to the new view controller, e.g.
//[infoViewController setInfoText:...];
[self presentModalViewController:infoViewController animated:YES];
[infoViewController release];
Related
Does anyone know of any good tutorials for the following please?
Im new to Xcode and dont know where to start with this.
I have a ViewController that is the root View and has 6 navigation buttons (UIButton) on it. Depending on which button that is clicked, the user will see a sub-navigation View of that section with further button options on it.
So e.g top level will have buttons Where to Eat, What to Do...
Then clicking on Where to Eat will show Restaurants, Fast Food ....etc
I would like to do this programatically. I can do it using Storyboards and using multiple views, but it gets very messy as there are a lot of views on the screen eventually.
I have followed a tutorial HERE on how it is done for TableViewControllers, but I need something similar for buttons.
Im not sure what this function is called - have been searching for sub-navigation for the last while but nothing matches what I need to accomplish this.
Check out UIViewController's method presentViewController:animated:completion: method. It is available in iOS 5.0 and up. Let's say you have one of the button's linked to run the buttonOneActivated: method:
-(IBAction)buttonOneActivated:(id)sender
{
UISubViewController *subViewController = [[UISubViewController alloc] init];
[self presentViewController:subViewController
animated:YES
completion:NULL];
}
And in UISubViewController's implementation, let's say you have another button in order to return to the parent:
-(IBAction)returnToParent:(id)sender
{
[[self presentingViewController] dismissViewControllerAnimated:YES
completion:NULL];
}
I'm trying to display the content of the camera in a custom view. What I just want to achieve is to have custom buttons to take pictures in order to take more than one photo at a single time.
It should work out of the box, theoretically, but in practice sometimes it happens that if I dismiss my custom view controller and then I re-open it "quickly", the UIImagePickerController just shows a blank (black, actually) content. The funny thing is that if you try to take a picture, the camera actually is enabled and the shutter opens and you can collect the image. The only issue seems to be related to displaying the live-content into a specific UIView.
This is the code I use for displaying it:
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
[imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
[imagePickerController setShowsCameraControls:NO];
[imagePickerController setEditing:NO];
[imagePickerController setNavigationBarHidden:YES];
[imagePickerView addSubview:[imagePickerController view]];
[imagePickerController viewWillAppear:YES];
I don't like that viewWillAppear method call but it is the only way I found in order to show it.
imagePickerView is, indeed, the view that I have previously created to place the picker into.
By digging a little bit the problem myself, I noticed that if I wait a couple of seconds before re-opening my custom view controller, the picker shows up normally.
By taking a look into the console it seems that the picker (or the camera resource associated to it) is actually released after a while but this is just a guess.
Any clue? Thanks
You definitely need that viewWillAppear call, and likely more. Whenever a UIImagePickerController is presented by one of the "indirect" presentation methods (like a modal presentation, or being pushed on a navigation stack), it's automatically sent all of the appropriate display related notifications: viewWillAppear:, viewDidAppear:, viewWillDisappear:, and viewDidDisappear:.
Internally UIImagePickerController uses these notifications to take appropriate initialization actions, like the shutter effect. You don't know how it uses them, you just have to be sure it gets them.
When you present the UIImagePickerController directly by adding it's view as a subview, you deprive it of automatically receiving these notifications. From the View Controller Programming Guide:
If you incorporate a view
controller’s view into your hierarchy
by other means (by adding it as a
subview to some other view perhaps),
the system assumes you want to manage
the view yourself and does not send
messages to the associated view
controller object.
This isn't necessarily bad, it just means you need to shoulder the responsibility for those messages yourself. I haven't seen this exact issue that you're having with display of the picker, but my first attempt at a fix would be to ensure that each of those 4 display related notifications are sent to the picker controller at the appropriate time, especially the disappearing ones, if you aren't already doing so.
I'm new to iPhone development, and multiple views (xib or nib) are really confusing me. This is what i'm trying to achieve...
using TabBarControllerAppDelegate
Have 5 different TabBar Items and have created 5 different Views thru the TabBarController
The First View has a UIButton that is a Next button that needs to go to another view called View2.XIB.
I setup a new UIViewController which references the View2 and an IBAction for the switchPage, etc but not able to get it to do anything when clicking on the button.
All of My TabBar buttons work but not able to Navigate to anything outside of the Tabbar
Any help in this regard will be highly appreciated. Anyone have any examples
IBAction switchPageButtonPressed:(id)sender
{
[self.tabbarcontroller.tabBar setSelectedItem:[self.tabbarcontroller.tabBar.items objectAtIndex:1]];
here 1 means ur 2nd tabbar
}
It is difficult to find the problem without the code, but I will assume your action code for the switchPage button is incorrect. You should use code similar to the following:
- IBAction switchPageButtonPressed:(id)sender
{
ViewController2 *view2VC = [[ViewController2 alloc] initWithNibName:#"View2" bundle:nil];
[self presentModalViewController:nview2VC animated:YES];
[view2VC release];
}
If you are confident your method works, then you will want to verify that the action is hooked up correctly. The easiest way to do this is to place a breakpoint on the method and run the app in Debug. When you click the button, the debugger should break on your method, if it doesn't, you will need to check your connections in Interface Builder.
I have a design question/technical question about my iPhone app.
I have a pretty simple (read really really simple) single view application. And it does everything that I need it to do. However I find myself in need of a help view. And I really don't quite know what to do!
I have a simple helpButton() method in my main view controller, and I really just want to display a scrollview with a bunch of images that show what to do during the use of my app. However, should I make a new viewcontroller class? How do I call it from my method?
Really I was thinking of an unfortunately simple method, just putting a scrollview behind everything and hiding it. Then showing it when the IBAction is called. Horrible...
Sorry if this is elementary, I haven't needed to do anything more yet!
You can push a modalViewController. To do that just make a new viewController with the scrollview and associated data in it, then
MyViewController *myViewController = [[MyViewController alloc] init];
[self presentModalViewController:myViewController animated:YES];
Create an IBAction in your new viewController and a hooked up button to that action to dismiss the modalView (something like this:
IBAction done {
[self dismissModalViewControllerAnimated:YES];
}
A couple options:
1) Create a new UIView object, either programmatically, or even in your existing XIB file. Use the [self.view addSubview:view] method to display it.
2) Create a new UIViewController with its own XIB file. Use [self presentModalViewController:anaimated:] to display it.
Either way, you'll need to add something to the new view to dismiss it when you're done.
I'm a newbie programmer and I have played around with the SDK for a while. How do you create a homepage that has a button that will bring you to another view (the content of the app)??? If you know can you list the steps in order or link a tutorial site (It woul be awesome if the steps had code with it I needed). Thanks!
I would recommend getting a good book on iPhone programming. What you want to do is set up a UINavigationController, add the button to the first view, set the action of the button's touchUpInside to call the showContent method. Then implement the showContent method to push the Content view controller.
- (IBAction) showContent{
ContentViewController *myContentController = [[ContentViewController alloc] init];
myContentController.title = #"Content";
[self.navigationController pushViewController:myContentController animated:YES];
[myContentController release];
}
Have a read up on the documentation for pushViewController and UINavigationControllers, then follow this tutorial.