How do you save a UIImage?

How do you save a UIImage?

If you’ve generated an image using Core Graphics, or perhaps rendered part of your layout, you might want to save that out as either a PNG or a JPEG. Both are easy thanks to two methods: pngData() and jpegData() , both of which convert a UIImage into a Data instance you can write out.

How do I save an image in Userdefaults?

In order to save UIImage in NSUserDefaults , you need to convert UIImage into NSData using UIImageJPEGRepresentation(image, 1) then save it in NSUserDefaults . And on the other side, while retrieving it on another ViewController (within that same application) you need to get NSData and then convert it into UIImage .

How do you save a UIImage in realm Swift?

and save this picture in Realm (as NSData): asset. assetImage = UIImagePNGRepresentation(userPhoto.

How do I save an image in a directory in Swift?

Save and Get Image from Document Directory in Swift ?

1. Save Image At Document Directory : func saveImageDocumentDirectory(){
2. Get Document Directory Path : func getDirectoryPath() -> String {
3. Get Image from Document Directory : func getImage(){
4. Create Directory : func createDirectory(){
5. Delete Directory :

How do I convert CGImage to UIImage?

Convert CIImage to UIImage iOS swift.

1. func convert(cimage:CIImage) -> UIImage.
2. let context:CIContext = CIContext. init(options: nil)
3. let cgImage:CGImage = context. createCGImage(cmage, from: cmage. extent)!
4. let image:UIImage = UIImage. init(cgImage: cgImage)

What is JPEG vs PNG?

Let’s start with the basic definitions. PNG stands for Portable Network Graphics, with so-called “lossless” compression. JPEG or JPG stands for Joint Photographic Experts Group, with so-called “lossy” compression. As you might have guessed, that is the biggest difference between the two.

How do I save an image in CoreData?

This function does the actual saving.

1. Go the the CoreData thread with dispatch_barrier_sync(saveQueue)
2. First insert a new FullRes and a new Thumbnail object into the Managed Object Context.
3. Set the values.
4. Set the relationship between FullRes and Thumbnail.
5. Use do try catch to attempt a save.

How do I save an image in NSUserDefaults in Objective C?

now it’s saved easily for you to retrieve. When you want to retrieve the image. NSString *filePath = [[NSUserDefaults standardUserDefaults] objectForKey:@”key”]; NSData *imageData = [NSData dataWithContentsOfFile:filePath]; UIImage *myImage = [UIImage imageWithData:imageData];

What is CGImage in Swift?

CGImage: A CGImage can only represent bitmaps. Operations in CoreGraphics, such as blend modes and masking require CGImageRefs . If you need to access and change the actual bitmap data, you can use CGImage . It can also be converted to NSBitmapImageReps .

How do I get the file path in Swift?

How to Get Documents Directory in Swift

1. func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.
2. let urls = FileManager.
3. let urls = FileManager.
4. func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.

What is Userdomainmask in Swift?

The user’s home directory—the place to install user’s personal items ( ~ ). iOS 2.0+

What format is an image in a CVPixelBuffer?

CoreVideo internal format
1 Answer. CVPixelBuffer is a raw image format in CoreVideo internal format (thus the ‘CV’ prefix for CoreVideo). CoreVideo is a iOS framework.

What happens when you save an image as a PNG file?

When you use the Save method to save a graphic image as a Windows Metafile Format (WMF) or Enhanced Metafile Format (EMF) file, the resulting file is saved as a Portable Network Graphics (PNG) file. This behavior occurs because the GDI+ component of the .NET Framework does not have an encoder that you can use to save files as .wmf or .emf files.

How to convert a PNG image to an online url?

World’s simplest online Data URL to Portable Network Graphics (PNG) image converter. Just import your Data URL in the editor on the left and you will instantly get a PNG image on the right. Free, quick, and very powerful. Import a Data URL – get a PNG. Created with love by team Browserling .

How to save an image to a different file?

A string that contains the name of the file to which to save this Image. filename is null. The image was saved with the wrong image format. The image was saved to the same file it was created from. The following code example demonstrates how to call the Save method. This example is designed to be used with Windows Forms.

How to convert a PNG image to a GIF?

Quickly convert a color PNG image to a grayscale PNG. Quickly round the corners of a PNG picture. Quickly replace transparency in a PNG file with a solid color. Quickly convert a PNG graphics file to a single-frame GIF. Quickly convert a GIF animation to a PNG picture. Quickly convert a PNG picture to a bitmap file.