Top "Nsdata" questions

NSData writeToFile not working

I cant seem to get nsdata to write to a file. Any ideas what i may be doing wrong. Thanks …

ios nsdata writetofile

How to convert an Int into NSData in Swift?

In Objective-C I use the following code to Convert an Int variable into NSData, a packet of bytes. int myScore = 0; …

ios swift int nsdata

UIImage to NSData for Core Data in Swift 3.0

So previously, in Swift 2.2 I could use Entity.image = UIImagePNGRepresentation(UIImage(named: "Image Name")!) But now in Swift 3.0 it appears …

ios swift3 uiimage ios10 nsdata

Is there a writeToFile equivalent for Swift 3's 'Data' type?

I've some code which returns the new iOS 10 / Swift 3 NSData replacement(?) type: Data if let jpegData = UIImageJPEGRepresentation(newImage, 0.8) { ... } I want …

swift nsdata swift3 xcode8 ios10

Determine MIME type from NSData?

How would you determine the mime type for an NSData object? I plan to have the user to upload a …

ios objective-c mime-types nsdata

NSData dataWithContentsOfFile returning null

I am trying to fetching a JSON file which exist in my xcode resources using this code -(void)readJsonFiles { …

ios iphone objective-c nsdata

Converting custom class object into NSData

I have a custom class that I want to save into NSUserDefaults. I am told that I need to convert …

ios swift nsdata

Converting HEX NSString To NSData

I'm trying to convert a Hex NSString to NSData (I'm using the below attached code). The following is the output: &…

iphone objective-c ios nsstring nsdata

Convert nsdictionary to nsdata

have an app that can take a picture and then upload to a server. encoding it to base 64 and pass …

iphone objective-c uiimagepickercontroller nsdictionary nsdata

Iphone - How to encrypt NSData with public key and decrypt with private key?

I am converting a UIImage to NSData. Now I need to encrypt that NSData using a public key and I …

iphone nsdata encryption