I know it is possible to directly drag UIImage in Swift code, which looks like this
But somehow I am unable to get it working.
I tried to drag the image#3x.png from resources to code but the dragged image points to some other image, need to know how to get these image literals working.
you must have the image in your Assets.xcassets folder. Then after typing Image Literal autocomplete double click the icon and select your image from the collection. If you have too many images, and you still want to use the Image literals, then comment the ImageLiteral line, and write the exact name into the init of #imageLiteral, like this :
// #imageLiteral(resourceName: "NameOfYOurPicture")
then uncomment it, and you will have your image there
I am trying to set image to UIImageView. Its working well in older version.
In Xcode 9.4.1
But in Xcode 10
When I am trying to type name of image, image suggestion is not showing.
Even "Image Literal" is not working. Double clicking on above icon also not working.
Is there any setting in Xcode preferences?
How to enable image suggestion like before?
In Xcode 10 and Swift 4.2, only the code completion function (or auto-complete) of the Xcode IDE has been discontinued for the old way. Here is the new way:
Just type image literal and it will complete with default icon.
Double click on this icon and it will open the media library right side of it.
Just choose your image and it work like before!
Hope I am able to help you!
https://download.developer.apple.com/Developer_Tools/Xcode_10_beta_3/Release_Notes_for_Xcode_10_beta_3.pdf
Code Completion for Swift image literals has been removed in Xcode 10. (38087260)
There seem to be some real issues with how Xcode 10 handles image literals, especially when the name you provide your assets doesn't align with the filename of those assets.
The following are the steps I've found will restore image literal previews.
Add an image via the media library picker.
If you have multiple resolutions for your image (e.g. #1x, #2x, #3x), Xcode will inconveniently drop them all into your code and throw an error to let you know you've done something naughty.
Delete two of the faulty image previews, if necessary. You may be left with a default image icon instead of a preview of your actual image.
Comment out the lines on which you're setting the image. You'll see the image literal references the filename of your asset rather than the name you've provided in the asset catalog.
If you've renamed your assets after adding them to your asset catalog, this seems to sometimes prevent Xcode from reading the asset appropriately.
Change the filenames to the appropriate asset names.
You can find the asset names in your asset catalog.
Uncomment the code and, if the default image icon is still visible, double click on the image icon. It should then display a preview of your actual asset.
You may also need to clean and rebuild your project.
use command + shift + M to popup the Media Library then Simply Drag and Drop into your Code
OR
I'm using Firebase Database & Firebase Storage. I have an iOS Swift app, that allows the user to select multiple images, upload them to Firebase Storage, after the upload, it gets the downloaded URLs and stores them like:
In order to display those images in the app, I have the following xib file:
Where the middle (big) UIImageView is inside of a UIStackView because it could display more than 1 image.
My problem is that I get the URLs from the database, but for some reason I'm not able to display them in the app. I use the framework SDWebImage for caching and displaying images. So far in the app, it worked fine, but not here. I don't get where I'm wrong.
if let photoURLString = post?.photoURLs
{
for photo in photoURLString
{
let photoURL = URL(string: photo)
print(photoURL!)
postImage.sd_setImage(with: photoURL)
//postImagesStackView.addArrangedSubview(postImage)
}
}
post is the model object. I'm using for in to loop through the array of images from the database. When I print each url, I get the actual URL. But it's simple not displayed. I get this. The images are nowhere to be found/displayed:
Try to add aspect ratio for UIImage. Ex: In xib file, set ratio of UIImage to 1.
I want to create UIImageView with some system-image in it. (Example: the disclosure chevron image, etc.). How can I do so programmatically?
Note: I don't want to download the image and add it to the project, I want to fetch it from the user programmatically / from the Interface Builder.
From iOS 13 and Xcode 11 you can get system images by giving system name.
let image = UIImage(systemName: "info.circle")
Reference : UIImage Apple Documentation
If you mean you can to set the button to use the system disclosure icon, just do as #middaparka suggested and use this:
UIButton *button = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
If you're asking how you can access the image directly, you can't do that. This is your only option: Use default apple icons for pdfs and docs in iOS app?
I think iOS-Artwork-Extractor is the tool you are looking for. It lets you extract the artwork into png files.
There is no clean programmatical way to access the images of system buttons. Quote from the documentation of the UIButton.imageView property:
The value of the property is nil for system buttons.
You may do an off screen rendering of the views and extract the resources on the fly but that's a very shaky approach. It's better to extract every asset you need and use them as intended. You'll suffer much more in the end with the programmatic way.
I am pretty new to iOS and Xcode.
I tried to load an image with
[UIImage imageNamed:#"imageName.png/jpg and so on"];
but it only returns nil. The image should be in my project bundle, considering the fact that I can choose it from drag and drop menus in the InterfaceBuilder and it was added to Xcode via the "Add files to "projectname"..." menu.
It makes no difference whether I use .png or .jpg images, the result stays the same: they work via IB but not if I try to run the imageNamed method myself.
There are only a few reasons why an image would come back nil with imageNamed:
The image is not in your bundle. Make sure the image is actually in your project. Make sure the target is checked by clicking on the file and selecting the target it belongs to.
You have the image name spelled incorrectly or a problem with the extension.
You are using a retina display but do not have an #2x image. Try changing your simulator to retina and see if it shows up.
If you are using an asset catalog make sure you have the correct devices selected in the attribute inspector.
Some tips:
If you are testing using simulator delete the app off of your simulator and clean your project, then re-run. If it still shows up it should show up on your phone (if it doesn't it's probably an issue with the case of the filename or the #2x version).
If you are testing on your phone and it doesn't show up, make sure you are using the same version of the simulator (if you have an iPhone 4/4s make sure to use the 4/4s simulator with retina).
One last thing according to this post: JPG image doesn't load with UIImage imageNamed There is some issue with certain JPG types working with imageNamed and no extension. IMO, you should be using PNGs anyway since iOS compresses them for you, unless you just have to use JPG.
Re Mike Weller's comment. The checkbox is ....
If you verified all of the above and are finding that your UIImage(named: "myImage") returns nil from code inside of a dynamic framework you are building, then you have to change the code to:
UIImage(named: "myImage", in: Bundle(identifier: "com.myframework.name"), compatibleWith: nil)
This should retrieve the asset from CXAssets correctly.
In my case, the PNG was malformed.
For some reason Xcode preview shown it correctly, but when I tried loading it with UIImage, it returned nil.
I just had this issue for jpg files named on disk "file.jpg"
I was trying to load without the extension, just #"file". While this works fine for pngs, it does not for jpg. Once I used #"file.jpg", it worked!
Swift 5
If you get UIImage nil in dynamic framework, you should set image with bundle identifier.
You can create an extension to Bundle like this;
Create an extension;
extension Bundle {
public static let myFramework = Bundle(identifier: "com.myFramework.bundle")
}
Then you can use like this;
UIImage(named: "myImageName", in: Bundle.myFramework, compatibleWith: nil)
Or
You can use like this;
UIImage(named: "myImageName", in: Bundle(for: type(of: self)), compatibleWith: nil)
I think the first one is more useful because it's more readable than second one.
Try re-exporting your image.
I had a similar problem, UIImage imageNamed was returning nil and none of these answers fixed my problem.
I found out that it was actually something wrong with the png file. I opened the file in GIMP image editor, saved it as a new file, exported it again as png and magically it started working.
I didn't change anything in code at all so there was definitely something wrong with the actual image file.
try
[UIImage imageNamed:#"imageName.png"];
instead (with an extension)
I had the same problem: #"photo.jpg" resulted in 'nil' UIImage.
Changing to the "actual" filespec, #"photo.JPG" works fine!
I hadn't realized there was case-sensitivity there! VERY non-intuitive.
i had a similar issue, finally the cleanup fixed it: the image showed up in the simulator, but id did not show up when running the app on the iPhone.
What I did:
1) deleted the app from the iPhone
2) performed Product/Clean
after that the bug was fixed and the image showed up!
Try to use UIImage(contentsOfFile:) instead of imageNamed. It worked for me with downloaded images.
Check that file has no space at the end.
The name like name #2x.png will fail loading, but name#2x.png is fine
Does the image work on the simulator but not on the device?
If so, in this scenario it is always to do with the case of the name. The device requires exact case and the simulator is not so fussy if I remember correctly.
e.g. for an image named image.png
[UIImage imageNamed:#"Image"];
would work on the simulator but not on the device...
Make sure you have the image for the DEVICE you are using in your .xcassets file. An image flagged for iPad won't show up on the phone (or the simulated phone).
In addition to #Inturbidus's answer:
For those who came here working on Application Extensions:
The image you are working with should belongs to both targets - hosted app and extension.
In other case you'll always getting nil trying to access it from within the extension's code.
For Xcode 6.4, click on Images.xcassets and check whether there are entries for each image that you called. You may right-click on the image and select "Show in Finder" to check if the images are the correct ones added.
Make sure the Attributes Inspector name field of the image matches exactly the name you're using. In my case the image was part of a folder and so the image name was "folder/name". Using this long name solved the problem. XCode 7.3.1
In my case, using a name with accented characters proved to be a poor idea. I changed Astéroïdes to Asteroids and it worked fine.
In my case problem was with image name in asset catalog.
For example if you have image with name "TEst" and change name to "Test", changes won't be indexed. If your teammate will pull commit with this changes, image in his asset catalog will have previous name "TEst".
Very small chance to catch this situation but it's possible.
I had multiple .xcassets in my projects and 2 had duplicate name of images. So it was not loading the image in my case.