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The reuse identifier is associated with a UITableViewCell object that the table-view’s delegate creates with the intent to reuse it as the basis (for performance reasons) for multiple rows of a table view. It is assigned to the cell object in initWithFrame:reuseIdentifier: and cannot be changed thereafter. A UITableView object maintains a queue (or list) of the currently reusable cells, each with its own reuse identifier, and makes them available to the delegate in the dequeueReusableCellWithIdentifier: method.

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AutoLayout, set frame within code.

djkskqyr3

use below code.

+ (NSString*)currentDate
{
    NSDate *now = [NSDate date];
    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDateComponents *components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:now];
    NSDate *today = [calendar dateFromComponents:components];
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd"];

djkskqyr3

actually there is no bug

djkskqyr3

With "atomic", the synthesized setter/getter will ensure that a whole value is always returned from the getter or set by the setter, regardless of setter activity on any other thread. That is, if thread A is in the middle of the getter while thread B calls the setter, an actual viable value -- an autoreleased object, most likely -- will be returned to the caller in A.

In nonatomic, no such guarantees are made. Thus, nonatomic is considerably faster than "atomic".

djkskqyr3

It should be use below code.

dispatch_async(dispatch_get_main_queue(), ^{
                [NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:10]];
        self.alert.text = @"Thanks";
});

djkskqyr3

Use:

NSURLSessionConfiguration:backgroundSessionConfiguration:
instead of

NSURLSessionConfiguration:defaultSessionConfiguration
From the NSURLSessionConfiguration:backgroundSessionConfiguration: documentation:

Upload and download tasks in background sessions are performed by an external daemon instead of by the app itself. As a result, the transfers continue in the background even if the app is suspended, exits, or crashes.
So in your case, change:

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// You have a very very large video file you need to upload to a server while your app is backgrounded.
// Solve by using URLSession background functionality. I will here use Alamofire to enable multipart upload.

class Networking {
  static let sharedInstance = Networking()
  public var sessionManager: Alamofire.SessionManager // most of your web service clients will call through sessionManager
  public var backgroundSessionManager: Alamofire.SessionManager // your web services you intend to keep running when the system backgrounds your app will use this
  private init() {
    self.sessionManager = Alamofire.SessionManager(configuration: URLSessionConfiguration.default)
    self.backgroundSessionManager = Alamofire.SessionManager(configuration: URLSessionConfiguration.background(withIdentifier: "com.lava.app.backgroundtransfer"))

djkskqyr3

Serial Keys:

FU512-2DG1H-M85QZ-U7Z5T-PY8ZD
CU3MA-2LG1N-48EGQ-9GNGZ-QG0UD
GV7N2-DQZ00-4897Y-27ZNX-NV0TD
YZ718-4REEQ-08DHQ-JNYQC-ZQRD0
GZ3N0-6CX0L-H80UP-FPM59-NKAD4
YY31H-6EYEJ-480VZ-VXXZC-QF2E0
ZG51K-25FE1-H81ZP-95XGT-WV2C0
VG30H-2AX11-H88FQ-CQXGZ-M6AY4

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// Based on  https://web.dev/mediastreamtrack-insertable-media-processing/
// Uses Webcodecs API, which is supported only in Chrome as of November 2021

function convertI420AFrameToI420Frame(frame) {
  const { width, height } = frame.codedRect;
  // Y, U, V, Alpha values are stored sequentially. Take only YUV values
  const buffer = new Uint8Array(width * height * 3);
  frame.copyTo(buffer, { rect: frame.codedRect });
  const init = {
    timestamp: 0,