freelanceshack.com
-
3 min readTo map each column of a JSON array in Kotlin, you can use the Gson library to parse the JSON string into a data class representing the structure of the JSON object. You can then iterate over the array and access each column by its corresponding property in the data class. Alternatively, you can use the kotlinx.serialization library to deserialize the JSON string into a Kotlin data class.
-
6 min readIn order to import an extension function in Kotlin, you need to define the function as an extension function in a separate file or within the same file where you plan to use it. The extension function should be defined with the receiver type specified before the function name.Once the extension function is defined, you can import it in a different file by using the import statement followed by the fully qualified name of the file containing the extension function.
-
6 min readIn Kotlin, to get a data class value given another one, you can use the componentN() functions generated automatically for data classes. These functions allow you to access the properties of the data class based on their index. For example, if you have a data class called Person with properties name and age, you can get the age of a person by calling person.component2(). This will return the value of the age property for the given Person object.
-
6 min readTo navigate to a Flutter screen from Kotlin, you can use platform channels to communicate between the two platforms. By creating a method channel in Flutter and invoking it from Kotlin, you can trigger navigation to a new Flutter screen. Make sure to handle any data or parameters that need to be passed between the two platforms during the navigation process. This approach allows for seamless navigation between Kotlin and Flutter screens within a single mobile application.
-
7 min readTo add onBackPressed() functionality to the Privacy Policy in Kotlin, you would first need to override the onBackPressed() method in your activity or fragment class. Inside this method, you can perform the desired actions when the user presses the back button while viewing the Privacy Policy.
-
4 min readTo create a Kotlin UInt from Java, you can use the following code snippets:In Java: import kotlin.jvm.JvmField; public class JavaClass { @JvmField public static int createUInt() { return 10; } } In Kotlin: val uintValue = JavaClass.createUInt().toUInt() By using the toUInt() function in Kotlin, you can convert the Java integer value to Kotlin's UInt data type.[rating:f8e7b244-16c9-4deb-b39c-cdcab74f465d]What is the purpose of using unsigned integers in kotlin.
-
3 min readTo write a formula in Kotlin, you need to start by declaring a function that represents the formula you want to write. You can define the input parameters for the function and specify the return type. Inside the function body, you can perform the necessary calculations to implement the formula. You can use operators such as +, -, *, /, and % for basic arithmetic operations, as well as functions from the standard library for more complex calculations.
-
5 min readTo have two radio buttons side by side in Kotlin, you can create a RadioGroup view in your layout XML file and then add two RadioButton views inside it. Set the orientation of the RadioGroup to horizontal to display the radio buttons next to each other. You can customize the appearance and behavior of the radio buttons by setting attributes like text, id, and checked state in your Kotlin code. By doing this, you can have two radio buttons side by side in your Kotlin app.
-
6 min readIn Kotlin, you can print the exception message using the "printStackTrace()" method. This method is available on the Throwable class, which is the superclass of all exceptions in Kotlin. By calling the "printStackTrace()" method on the caught exception, you can print the exception message along with the stack trace to the standard error output. This can be helpful for debugging and troubleshooting your code.
-
6 min readTo save data in a service class in Kotlin, you can create variables within the service class that hold the data you want to save. These variables can have either a private or public visibility modifier, depending on whether you want them to be accessible from outside the service class.You can then update these variables with the data you want to save whenever needed, and retrieve them when required.
-
4 min readTo get the selected index from a list in Kotlin, you can use the indexOf method on the list. This method takes in the element you are looking for and returns its index in the list. You can then store this index in a variable for further use in your code. For example: val myList = listOf("apple", "banana", "cherry") val selectedElement = "banana" val selectedIndex = myList.