How do you save in UIImage?

How do you save in 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 you save UIImage 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 .

What is a UIImage?

A UIImage object is a high-level way to display image data. You can create images from files, from Quartz image objects, or from raw image data you receive. The UIImage class also offers several options for drawing images to the current graphics context using different blend modes and opacity values.

Can we store image in Userdefaults?

While it is possible to save a UIImage to NSUserDefaults , it is often not recommended as it is not the most efficient way to save images; a more efficient way is to save your image in the application’s Documents Directory .

How do I save my iPhone photo library?

Tap on the conversation with the image you want to save. Tap and hold the photo. Tap Save. The photo will appear in your Camera Roll; open your Photos App to view it.

How do I save an image in core data?

Name it img and make sure the attribute type is Binary Data, then click on the img attribute and go to Data Model Inspector. Check the box Allows External Storage. By checking this box, Core Data saves a reference to the data which will make for faster access.

Where are IOS photos stored?

Store your photos and videos in iCloud

1. Tap Settings > [your name] > iCloud > Photos.
2. Turn on iCloud Photos.
3. Select Optimize iPhone Storage to save space on your device.

What is UIImage in Swift?

An object that manages image data in your app.

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

From a UIImage instance get the data with UIImagePNGRepresentation() or UIImageJPEGRepresentation() . Then save the data to a file. Use imageWithContentsOfFile: to recover the UIImage. The easiest way for you is to directly save the content to your iOS Device and store the path in the NSUserDefaults.

How do you save pictures on a laptop?

Replies (3) 

1. Right-click the picture that you want to save in a graphics file format, and then click Save as Picture.
2. In the Save as type list, select the graphics file format that you want.
3. In the File name box, type a new name for the document, or do nothing to accept the suggested file name.
4. Click Save.

How do I save a uiimage as a PNG or JPEG?

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 to convert a uiimage to a data instance?

Both are easy thanks to two methods: pngData () and jpegData (), both of which convert a UIImage into a Data instance you can write out. That call to getDocumentsDirectory () is a little helper function I include in most of my projects, because it makes it easy to locate the user’s documents directory where you can save app files.

How do I save a JPEG file in HTML?

To save a jpeg file we will use the following code: This code very similar to savePng above. We have a method called saveJpg which will take a UIImage as an argument. On the UIImage we call jpegData, jpegData requires us to pass through a compressionQuality argument.

How to set the view controller as the delegate of uiimagepickercontroller?

Well, setting the view controller as the delegate of the UIImagePickerController require the class to conform to both the UIImagePickerControllerDelegate and the UINavigationControllerDelegate protocols. Let’s fix this right away, change the class declaration to the following: