The delay seems to be related to instantiating AVAudioPlayer for the first time. If I load any audio, run [audioPlayer prepareToPlay] and then immediately release it, the load times for all of my other audio is very close to imperceptible. So now I’m doing that in applicationDidFinishLaunching and everything else runs well. I can’t find … Read more
UIImage(data:imageData,scale:1.0) presuming the image’s scale is 1. In swift 4.2, use below code for get Data(). image.pngData()
If anyone is looking for a way to do this in Swift: Swift 3 introduces the Data type, with value semantics. To convert the deviceToken to a String, you can do as follows: func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) { let token = deviceToken.map { String(format: “%02.2hhx”, $0) }.joined() print(token) } Old answer using … Read more
You can decode a Base64 encoded string to NSData: -(NSData *)dataFromBase64EncodedString:(NSString *)string{ if (string.length > 0) { //the iPhone has base 64 decoding built in but not obviously. The trick is to //create a data url that’s base 64 encoded and ask an NSData to load it. NSString *data64URLString = [NSString stringWithFormat:@”data:;base64,%@”, string]; NSData *data … Read more
Your Base64 string is not valid. It must be padded with = characters to have a length that is a multiple of 4. In your case: “eyJlbWFp….MTM3fQ==”. With this padding, initWithBase64EncodedString decodes the Base64 string correctly.
Not really getting any feedback, this is the solution I ended up with: Make encode() and decode() functions for my struct Change Int to Int64 so the Int has the same size on 32-bit and 64-bit platforms Have an intermediate struct (ArchivedPacket) that has no String or Data, but only Int64 Here is my code, … Read more
Here is an example of getting your data into a NSData object. const unsigned char bytes[] = {values here}; NSData *data = [NSData dataWithBytes:bytes length:sizeof(bytes)]; NSLog(@”%@”, data);
Try this code. This worked for me. Saving the data. create path to save the image. let libraryDirectory = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true)[0] let libraryURL = URL(fileURLWithPath: libraryDirectory, isDirectory: true) let fileURL = libraryURL.appendingPathComponent(“image.data”) convert the image to a Data object and save it to the file. let data = UIImageJPEGRepresentation(myImage, 1.0) try? data?.write(to: fileURL) retrieving … Read more
Scroll down to the Conclusion section on the page you linked and download the provided NSData+Base64 files. Its the best solution I have seen so far and is incredibly easy to use. If you can learn anything about Cocoa, you can learn to use that project. Example NSString *originalString = [NSString stringWithFormat:@”test”]; NSData *data = … Read more
I have tried RSA Encryption and Decryption for NSString and you may well modify it and make it work for NSData Add Security.Framework to your project bundle. ViewController.h code is as follows: #import <UIKit/UIKit.h> #import <Security/Security.h> @interface ViewController : UIViewController { SecKeyRef publicKey; SecKeyRef privateKey; NSData *publicTag; NSData *privateTag; } – (void)encryptWithPublicKey:(uint8_t *)plainBuffer cipherBuffer:(uint8_t *)cipherBuffer; … Read more