inline fun <reified T: Any>notNullProperties(data: T, callBack :(list: List<String>)->Unit){
val allNullData = mutableListOf<String>()
for (prop in T::class.memberProperties) {
if ( prop.get(data) == null){
allNullData.add(prop.name)
}
}
callBack.invoke(allNullData)
}
Use case
val changePassword...
Mehedi Hassan Piash | Senior Software Engineer | Android | iOS | KMP | Ktor | Jetpack Compose | React-Native.
August 17, 2021
August 15, 2021
Kotlin : How to use if-else like condition with let block for 'null' checks
Source - kotlinlang.org?. performs a safe call (calls a method or accesses a property if the receiver is non-null)?: takes the right-hand value if the left-hand value is null (the elvis operator)Change ?. with ?: will solve this issue,Code base as following, will run either let or run block based upon the null check.
var someValue : String? = null
someValue = "SOF"
someValue?.let...
August 07, 2021
Search filter in recyclerView android
1. Adapter for filter search data
class CountryAdapter : RecyclerView.Adapter<CountryAdapter.CountryViewHolder>() {
private val items: ArrayList<CountryNameItem> = arrayListOf()
var onItemClick: ((CountryNameItem) -> Unit)? = null
private val itemsCopies: ArrayList<CountryNameItem> = arrayListOf()
fun addItems(newItems: List<CountryNameItem>)...
Read local json file from assets in android
1. Extension to read JSON from assets
// Read json file from assets
fun AssetManager.readAssetsFile(fileName: String): String =
open(fileName).bufferedReader().use { it.readText() }
2. Use case of reading JSON
requireActivity().assets.readAssetsFile("country.json").fromPrettyJson<CountryName>()
3. JSON to object and object to JSON extension
...