It&#39;s not possible to access the camera of your development machine to be used as the simulator camera. Camera functionality is not available in any `iOS` version and in any Simulator. You will have to use a real device for camera testing purposes.

Simulator doesn&#39;t have a Camera. If you want to access a camera you need a device. You can&#39;t test camera on simulator. You can only check the photo and video gallery.

I initialized a new git in my project and I have only two commits so far. My log is like below

    git log
    commit e515e5b8dcbd8f1ea4a7a7d4a1efb82a1a0aee7a
    Author: Olkun Mustafa &lt;olkun.mustafa@gmail.com&gt;
    Date:   Fri Oct 3 10:04:20 2014 +0300
    
        Temp commit
    
    commit 71781bf0a7807351a56d5155dac94169ea700527
    Author: Olkun Mustafa &lt;olkun.mustafa@gmail.com&gt;
    Date:   Fri Oct 3 10:01:42 2014 +0300
    
        First Commit

When I try to rebase this commits I get error like below

    git rebase --interactive HEAD~2
    fatal: Needed a single revision
    invalid upstream HEAD~2


I quite research at google but I haven&#39;t found solution till now.


Git: Needed a single revision error

This might be quite easy but have no idea how to.

I have a table that can have repeated values for a particular non-key column field. How do I write a SQL query using Query Builder or Eloquent that will fetch rows with distinct values for that column? 

Note that I am not fetching that column only, it is in conjunction with other column values, so `distinct()` might not really work. So that question basically can be how to specify the column that I want to be distinct in a query now that `distinct()` accepts no parameters?

How to get distinct values for non-key column fields in Laravel?

I am making a camera app. I need to test the app in the simulator but I can&#39;t access the iOS simulator camera.

If not possible in the simulator means I need to access my system camera. Whether it is possible? 

I tried `UIImagePickerController` but it doesn&#39;t work.

The below the code I&#39;ve tried.

    self.imagePicker = [[UIImagePickerController alloc] init];	
    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    self.usingPopover = YES;
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
    sourceType = UIImagePickerControllerSourceTypeCamera;
    self.usingPopover = NO;
    }
    [self.imagePicker setSourceType:sourceType];
    self.imagePicker.allowsEditing = NO;
    self.imagePicker.delegate = self;
    if (sourceType != UIImagePickerControllerSourceTypeCamera) {
    self.popover = [[UIPopoverController alloc] initWithContentViewController:self.imagePicker];
    self.popover.delegate = self;
    [self.popover presentPopoverFromRect:popoverFrame inView:self.view  
    permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    } else {
    [self presentModalViewController:imagePicker animated:YES];    
    }

How to access iOS simulator camera

I am making a camera app. I need to test the app in the simulator but I can't access the iOS simulator camera.
If not possible in the simulator means I need to access my system camera. Whether it is possible?
I tried <code>UIImagePickerController</code> but it doesn't work.
The below the code I've tried.
<pre><code class="hljs language-ini">self.imagePicker = [[UIImagePickerController alloc] init];	
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.usingPopover = YES;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
sourceType = UIImagePickerControllerSourceTypeCamera;
self.usingPopover = NO;
}
[self.imagePicker setSourceType:sourceType];
self.imagePicker.allowsEditing = NO;
self.imagePicker.delegate = self;
if (sourceType != UIImagePickerControllerSourceTypeCamera) {
self.popover = [[UIPopoverController alloc] initWithContentViewController:self.imagePicker];
self.popover.delegate = self;
[self.popover presentPopoverFromRect:popoverFrame inView:self.view 
permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
} else {
[self presentModalViewController:imagePicker animated:YES]; 
}
</code></pre>

I&#39;m a .NET developer and want to write an IOS &amp; Android app in C#. I&#39;ve had a read around Xamarin for Visual Studio which looks interesting if not a tad expensive!

Do you need a Mac to debug your code? Do you just need a networked Mac to actually deploy the app to the Store?

Is the best option just to buy a Mac and run Windows with VS in a VM or can I just use my windows machine, write &amp; debug the code in Windows then just hook up to a networked Mac for final deployment?

Xamarin Visual Studio IOS Development Without a Mac?

I am writing my first iOS application (iPhone only) with Swift. The main application view should allow user to choose the image from the photo gallery. 

I&#39;ve found the following sample code of **ViewController.swift**:

    class ViewController: UIImagePickerController, UINavigationControllerDelegate, UIImagePickerControllerDelegate  {
                                
        override func viewDidLoad() {
            super.viewDidLoad()
            // Do any additional setup after loading the view, typically from a nib.
        }
    
        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
            // Dispose of any resources that can be recreated.
        }
    
        func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
            
            var imagePickerController = UIImagePickerController()
            imagePickerController.delegate = self
            imagePickerController.sourceType = UIImagePickerControllerSourceType.SavedPhotosAlbum
            imagePickerController.allowsEditing = true
            self.presentViewController(imagePickerController, animated: true, completion: { imageP in
                
            })
        }
        
        
        func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!) {
            let selectedImage : UIImage = image
            println(selectedImage)
        }
    
    }

and have the following View Controller Scene -

    View Controller
     - Top Layout Guide
     - Bottom Layout Guide
     - View
       - Image View
    First Responder
    Exit

But when I start the app, just black screen is shown. What I am doing wrong?
Another [sample code][1] I&#39;ve found is in Objective-C, which doesn&#39;t help me.


  [1]: https://developer.apple.com/library/prerelease/ios/samplecode/PhotoPicker/Listings/PhotoPicker_APLViewController_m.html#//apple_ref/doc/uid/DTS40010196-PhotoPicker_APLViewController_m-DontLinkElementID_6

How to allow user to pick the image with Swift?

I have a class called `MyClass` which is a subclass of `UIView`, that I want to initialize with a `XIB` file. I am not sure how to initialize this class with the xib file called `View.xib` 

    class MyClass: UIView {

        // what should I do here? 
        //init(coder aDecoder: NSCoder) {} ?? 
    }

How to initialize/instantiate a custom UIView class with a XIB file in Swift

How do you add custom initializers to `UIViewController` subclasses in Swift?

I&#39;ve created a sub class of `UIViewController` that looks something like this:

    class MyViewController : UIViewController
    {
    	init(leftVC:UIViewController, rightVC:UIViewController, gap:Int)
    	{
    		self.leftVC = leftVC;
    		self.rightVC = rightVC;
    		self.gap = gap;
    		
    		super.init();
    		
    		setupScrollView();
    		setupViewControllers();
    	}
    }

When I run it I get a fatal error:

&gt; fatal error: use of unimplemented initializer &#39;init(nibName:bundle:)&#39; for class &#39;MyApp.MyViewController&#39;

I&#39;ve read elewhere that when adding a custom initializer one has to also override `init(coder aDecoder:NSCoder)` so let&#39;s override that `init` and see what happens:

	override init(coder aDecoder: NSCoder)
	{
		super.init(coder: aDecoder);
	}

If I add this, Xcode complains that `self.leftVC is not initialized at super.init call`. So I guess that can&#39;t be the solution either. So I wonder how can I add custom initializers properly to a `ViewController` subclass in Swift (since in Objective-C this seems not to be a problem)?

Swift: Custom ViewController initializers

We&#39;ve been using Xamarin iOS for the last 8 months and developed a non-trivial enterprise app with many screens, features, nested controls. We&#39;ve done our own MVVM arch, cross platform BLL &amp; DAL as &quot;recommended&quot;. We share code between Android and even our BLL/DAL is used on our web product.

All is good except now in release phase of project we discover irreparable memory leaks everywhere in the Xamarin iOS-based app. We&#39;ve followed all the &quot;guidelines&quot; to resolve this but the reality is that C# GC and Obj-C ARC appear to be incompatible garbage collection mechanisms in the current way they overlay each other in monotouch platform.

The reality we&#39;ve found is that hard cycles between native objects and managed objects &lt;b&gt;WILL&lt;/b&gt; occur and &lt;b&gt;FREQUENTLY&lt;/b&gt; for any non-trivial app. It&#39;s extremely easy for this to happen anywhere you use lambdas or gesture recognizers for example. Add in the complexity of MVVM and it&#39;s almost a guarantee. Miss just one of these situations and entire graphs of objects will never get collected. These graphs will lure other objects in and grow like a cancer, eventually resulting in a prompt and merciless extermination by iOS.

Xamarin&#39;s answer is an uninterested deferral of the issue and an unrealistic expectation that &quot;devs should avoid these situations&quot;. Careful consideration of this reveals this as an admission that &lt;b&gt;Garbage Collection is essentially broken in Xamarin&lt;/b&gt;.

The realization for me now is that you don&#39;t really get &quot;garbage collection&quot; in Xamarin iOS in the traditional c# .NET sense. You need employ &quot;garbage maintanence&quot; patterns actually get the GC moving and doing its job, and even then it&#39;ll never be perfect - NON DETERMINISTIC.

My company has invested a fortune trying to stop our app from crashing and/or running out of memory. We&#39;ve basically had to explicitly and recursively dispose every damn thing in sight and implement garbage maintanence patterns into the app, just to stop the crashes and have a viable product we can sell. Our customers are supportive and tolerant, but we know this cannot hold forever. We are hoping Xamarin have a dedicated team working on this issue and get it nailed once and for all. Doesn&#39;t look like it, unfortunately.

Question is, is our experience the exception or the rule for non-trivial enterprise-class apps written in Xamarin?


&lt;b&gt;UPDATE&lt;/b&gt;

See answer for DisposeEx method and solution.


Xamarin iOS memory leaks everywhere

I received an error (Domain = LaunchServicesError, Code = 0) when trying to launch my app in the iOS Simulator with Xcode 6.  I looked for solution in google, but I didn&#39;t find anything practical.

What does this error mean?

An error was encountered while running (Domain = LaunchServicesError, Code = 0)

Xcode 6 GM now includes simulators for iPhone 6 and 6 Plus, and by default they run apps in a scaled mode.

To enable the new screen size I tried adding `Default-667h@2x.png` which seems to do a part of the trick since the app now fails to run at all, with the error &quot;Unable to run app in Simulator – An error was encountered while running (Domain = LaunchServicesError, Code = 0)&quot;.

Has anyone figured out how to get an app actually run in the 6/6+ resolution?

How to enable native resolution for apps on iPhone 6 and 6 Plus?

Apple&#39;s website claims that the resolution is 1080p: 1920 x 1080

However, the launch screen required by Xcode (8.0 GM launched today) is 2208 x 1242.

Who&#39;s right?


![Xcode][1]


  [1]: http://i.stack.imgur.com/Sx7Ig.png

iPhone 6 Plus resolution confusion: Xcode or Apple&#39;s website? for development

Okay, so we can now submit video previews of our apps on the App Store. According to Apple we should do so with an iOS8 device and **`OSX 10.10.`** The problem is you have to have all the different devices (4&quot;, 4.7&quot;, 5.5&quot; and iPad). 

Is there an alternative to this?

I am thinking of capturing a video of the simulator. The problem is the device screen is bigger than my **`FullHD`** monitor when shown in 100% resolution. Any solution that can capture a video right from the simulator in full resolution?

Edit:
Since a lot of people are answering questions I&#39;m not asking let me say:
 - Recording one device size and scaling it is not what I&#39;m asking;
 - How to record *any* app preview is not what I&#39;m asking;
- How you do your previews is not what I&#39;m asking;

What **I am** asking is **can you record a video from the simulator in 100% resolution if it doesn&#39;t fit on the screen?**

Capture iOS Simulator video for App Preview

When I&#39;m trying to run iOS application in Xcode 6 in iPhone 6 simulator, I&#39;m getting error **Unable to run app in Simulator**.  

And error code is: 

&gt; An error was encountered while running (Domain =
&gt; FBSOpenApplicationErrorDomain, Code = 4)

Can any one suggest how to resolve it?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/cSu4m.png

FBSOpenApplicationErrorDomain code =4 error

I am developing an app for iPhone, it is using camera for scanning barcodes and taking pictures. When we don&#39;t have Camera access and the user enables Camera Access, the app crashes and the re-opens.

Can you folks help me to fix this?

Thanks in advance.


Content Type	Original Author	Original Content on Stackoverflow
Question	R M	View Question on Stackoverflow
Solution 1 - Ios	Salman Zaidi	View Answer on Stackoverflow
Solution 2 - Ios	Chetan	View Answer on Stackoverflow

How to access iOS simulator camera

Ios Problem Overview

Ios Solutions

Solution 1 - Ios

Solution 2 - Ios

How to get distinct values for non-key column fields in Laravel?

Git: Needed a single revision error

Attributions