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 or force it to unwrap it with ! operator. Suppose ve have a value of … Read more
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 of a value in a safe and concise way. In this article, we will discuss … Read more
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 is no “tick” method declared anywhere (in which case you have to create it). 4 … Read more
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’ method) that is not declared in the MLVPieChartView interface. In this article, we will discuss … Read more
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 http://www.raywenderlich.com/5492/working-with-json-in-ios-5 If you are not using JSON simply use the dictionary to store those values and manipulate as your need 0 solved … Read more
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 in programming languages such as Java, C#, and Python. The solution is applicable to any … Read more
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 way-this stop malicious behaviour) Your app is ‘sandboxed’ meaning it’s on it’s own, it can’t … Read more
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 go back to the first screen?
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 to help you stay on track. With so many different apps available, it can be … Read more
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 screen of your iOS app. We will discuss the various methods available to you, such … Read more
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 controller class and release legacy code. If you need to update data between CustomCell and … Read more
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 can use to disable buttons in a custom cell, as well as provide step-by-step instructions … Read more
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 [parmaDic setObject:@”NAME” forKey:@”name”]; // if you want to display name [parmaDic setObject:message forKey:@”description”]; // if … Read more
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 will discuss how to post text on a friend’s wall using the latest Facebook SDK … Read more
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(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { return yourArray[row] // the … Read more