Optional means the value is Optional type. It can be either nil or a value. When working with cocoa api most of the method parameters are optional type. To get actual value from optional value you either use if-let binding…
Introduction Swift is a powerful and intuitive programming language developed by Apple for creating apps for iOS, macOS, watchOS, and tvOS. One of the key features of Swift is its use of optionals, which allow developers to handle the absence…
I’m looking at your MLVPieChartView.h file and I don’t see a method named “tick” in there. You need to change that call to the object that has a “tick” method. From what I can tell from your GitHub project, there…
Introduction The error “No Visible @interface for ‘MLVPieChartView’ declares the selector ‘tick’” is a common issue encountered when developing applications using the MLVPieChartView library. This error occurs when the code attempts to call a method (in this case, the ‘tick’…
As I understand from your post you need Deserialization in case you are using JSON reas the following tutorials for that How to deserialize json object and assign to a NSDictionary in iOS If you are not using JSON…
Introduction This post provides a solution to the problem of splitting an array into strings. The solution is a simple and efficient way to convert an array of characters into a string. It is a useful technique for manipulating strings…
This cannot be done. Apple is very restrictive when it comes to things like this. The way I understand it is this: Apple limits the API to your app (you can’t affect other apps or the OS in any major…
If you want to go the top of your navigation controller’s stack, which is your root view controller, than you can use the following line of code. – (IBAction)goHome:(id)sender { [self.navigationController popToRootViewControllerAnimated:YES]; } 1 solved ios how can my app…
Track running apps are a great way to stay motivated and track your progress as a runner. They provide a variety of features, such as tracking your distance, pace, and calories burned, as well as providing audio cues and feedback…
If you are developing an iOS app and are looking for a way to go back to the first screen, you have come to the right place. In this article, we will discuss how to go back to the first…
You cannot use dequeue because the return cell is a new instance of the cell and not the cell displayed. Your are two way for change the button state. Transport your (IBACTION)method in your custom cell class and not in…
Introduction Disabling buttons in a custom cell can be a tricky task, but it doesn’t have to be. With the right approach, you can easily disable buttons in a custom cell. In this article, we’ll discuss the different methods you…
You can post on friends wall by using FBWebDialogs class of Facebook SDK. For that you need friends facebook id in parameters in dictionary as below NSMutableDictionary *parmaDic = [NSMutableDictionary dictionaryWithCapacity:5]; [parmaDic setObject:link forKey:@”link”]; // if you want send picture…
Introduction Posting text on a friend’s wall is a great way to share content with them. With the latest Facebook SDK for iOS, it is now easier than ever to post text on a friend’s wall. In this article, we…
func numberOfComponents(in pickerView: UIPickerView) -> Int { return 1 // the amount of “columns” in the picker view } func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { return yourArray.count // the amount of elements (row) } func pickerView(_…