I just add split view from Object library.
After add run that project on iPad Pro simulation.
Why I can't find detail view?
Something changed?
And so I make it simple after remove some view controller like this.
controll drag and set master, detail.
Am I missing something?
The problem is that you cannot fully configure a split view controller based on the storyboard alone. Thus, in dragging just the Split View Controller object from the library into the storyboard, you're being handed what amounts to a half-finished piece of work. You have to finish the job yourself — and you clearly don't know how to do that.
The best way to make a split view controller setup, in my opinion, is to construct the whole thing in code.
But if you really want Apple to make you a working split view controller setup, then just start by making a new Universal or iPad project based on the Master-Detail template. There, the whole thing is laid out for you, including the necessary code.
Related
The app I am currently working on requires that I do not use ANY storyboards. Therefore I need to do everything programmatically. One thing I seem to be struggling with is switching between two UIViewControllers.
The issue is that every time I call the self.present() method; it creates a brand new instance of the class I would like to show. So when I go into Xcode's visual debugger, I see over 15 different views that are all stacked and are merely instantiations of one another. Ex: View1, View2, View1, View2, View1, View2, View1... This constant repetition of the views is significantly hurting the performance of my app. So my question:
Is there a way that I can switch between my two UIViewControllers without constantly creating a new instance of each one?
Again, I am doing all of this with ALL storyboards DELETED. So the solution I necessary needs to be implemented using ONLY code.
I think you should create main ViewController.
if you keep your two instance view controller, create two controller in mainViewController. Then keep that in main viewController.
And push view controller you want to present in navigation of main view controller
if you want to change second view controller pop navigation controller and push another, or just push other controller.
if you want keep your instance view controller i think it's best option for you
I think that it is really important to realize the fact that the view controller will show up multiple times in the debugger because that is something that can throw off the performance of the app. I really like the way you mention that in your comment. This is one of the main differences that can outstand you from another programmer in the same field. One of the most easiest and simple ways to fix this problem would be using the self.dismiss() method. Another way to dismiss this view controller would be to use a navigation controller to fix this problem. A navigation controller will push the main view controller out of the way and it will not create multiple instances of it. This will be the most efficient as it doesn't require a lot of code and a mere initialization of the UINavigationController class implemented in the UIKit. This is one of the most important tools and resources that you must make use of while coding in xcode and developing your skills in the swift ios field. Since this problem is not one of the most common to find on the internet, it is very beneficial for you to post it on this forum page and will really be helpful for some other programmers unaware of such methods and ways to code. One of the questions that I have for you is the fact that you don't want to use storyboards. Why don't you want to use storyboards and only make it proGrAMitcally? This is one of the very questions that manages to astound me. The storyboard is an implementation that makes it very easy for xcode and swift users to work around the tedious work that has to be done while working in the coding aspect. It only takes a few lines of code and you can get a seGu done very easily. The switch is very easily done and you can find this method on some youtube channels. For this type of work, I recommend VigneshSriniswami Patel and ShaniLakshmiVishnuJiSwami, these content creators will help guide you to becoming an xcode master.
Hope I helped!
I currently have my first app, which uses a storyboard. From the first view, I can be 8 model views deep before returning back to the start.
I think using XIBs (not storyboards) is better for my application. I would like to learn how to do all the views in code but all the books and tutorials treat code as a black plague. Hard to learn if no one teaches anymore.
My concern with my 8 deep modal string of views is that memory is consumed by each view and not released until I fall back to the start - releasing each one as I fall back.
My application is a state machine (so I want to simple move from one view to another), releasing all aspects of the view just being left. As I move from one state to the next, I release the current view as I move to the next one.
Can someone point me in the right direction?
Thanks.
You have a couple of choices. You could create a custom container controller (which would exist for the life of the run), and switch out which controller is embedded in it. As long as you have nothing pointing to the one that you replace, it will be deallocated.
A simpler solution, but one I don't really like to use, is to replace the window's root view controller with the next controller you want to go to, which will also cause the replaced one to be deallocated.
I'm just getting back into iOS development after a year or so away and am looking for a way to have a single view above or below a UITabViewController view. The idea is to have one ad view that is used throughout the app instead of one on each tab. The constant reinitializing of the ad view seems like it would be a lot of overhead so having one persist throughout would seem to be more effective.
I've searched for this but not found much of anything so even a useful link would be appreciated.
Thanks in advance,
Jason
I see several approaches here:
Since you are setting up your view hierarchy in your application's delegate, I'd suggest creating a separate UIViewController and managing it from your app delegate. That way you can show/hide it in the main UIWindow, without having to do much work.
You can subclass UITabBarController and show the ad in the visible view controller. This is more work, but your app architecture is arguably cleaner, because your app delegate doesn't get cluttered with ad-related code.
Another option is to look into a UIViewController category, where you can manage add related code. Not necessarily the cleanest, but it keeps the ads out of both your app delegate, and your tab bar controller. (You'd add the ad view as a category property via runtime level calls and associate objects, but that gets messy.)
I'd probably go with the first approach if it were me, but I could argue for either of the other two approaches, since an ad view doesn't really necessitate it's own view controller.
How about create a parent view controller and each view controller inherits from that parent view controller? Parent view controller has a ad view or table view, so every child view controller will has those two view as well.
Okay, after spending some time trying to create and manage a customer view controller for this I stumbled on the Container View Controller capability Apple added in iOS 5. I have no need to support iOS 4 or earlier so this works good for me. There's a good description of it here (unfortunately the author never wrote part 2 with a tutorial):
Container View Controller description
And a decent tutorial is available here:
Container View Controller tutorial
Between the two of these I was able to create a good setup with an AdViewController and BodyViewController (TabBarController) contained in a Container View Controller. This gives me all the capabilities I need (at least so far).
I have finished iPhone version of my app and want my app to support iPads as well. I used a tabbar controller for iphone.. I could use the same for iPad, however, I would have too much free space on iPad if I use a Tabbar. so I have decided to use Split View Controller. Left part(table view) should be visible all the time even if it's not in landscape mode. And every time a cell is clicked, the corresponding view should be loaded to the right hand side.. By the way I am using storyboards.. Seems like it makes everything more difficult. Are there some examples of it? Thanks..
I have faced a similar situation recently. Basically you can use the split view project template to generate the basic code. After that, I created a DetailedViewControllerContainer interface and used it as the view controller for the right side view of the split view, replacing the generated DetailViewController.
After that I created several view controllers, each of them corresponds to a selection in the left side view(master view controller). And add these view controllers as the child view controllers for the DetailedViewControllerContainer.
The catch is that you will need to use code to load the child view controllers. The benefit is that the child view controllers do not need to be modified from the iPhone version. The DetailedViewControllerContainer remains the only SplitView delegate.
Take a look at the sample code I wrote on github:
https://github.com/raoying/SplitView-Sample
I started to explore the UISplitViewController class with a new master detail project in XCode, and I would like to replace the detail view's content with another UIViewControllers. I wrote it in this way (self is the detail viewcontroller and controller is the uiviewcontroller which I want to replace the first one with):
self.view = controller.view;
My question is: is it a proper way, will Apple accept it? If it is not, how could I do it better?
I am also building an iPad app with Master - Detail View Controllers in a UIIntelligentSplitViewController. As UISplitViewController doesn't support well while changing to different orientations, using UIIntelligentSplitViewController solves the issue with orientation change. See more here.
I have read on one of apple documentation and also a in best practices that we should use Only one MasterView and DetailView Controllers in entire app, and write code in such a way that all data are loaded in these two views according to the object selected.
But loading all data in same detail view might be a lot of code. So, I am also in search for answer for efficiently writing code to load in same detail view controller. However currently I am implementing only two views to show net data.
If there is any other efficient way to accomplish it, please do mention. Thanks.
You could replace the detail view controller where it is setup in your app delegate "didFinishLaunchingWithOptionsMethod". Your method would probably also work but is creating unnecessary overhead. The auto generated code they provide default's to a navigation controller on the left and a view controller on the right but you can change that to whatever you need. I have a project where I have two navigation controllers.