demonar

class SeachActivity : AppCompatActivity() {

    lateinit var searchView: SearchView

    private val vm: SearchViewModel by viewModel()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.search_activity_layout)
        recyclerView.adapter = vm.adapter

demonar

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/searchView"
        android:icon="@drawable/ic_search_black_24dp"
        android:title="Search"
        app:showAsAction="always"
        app:actionViewClass="androidx.appcompat.widget.SearchView" />
</menu>

demonar

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.demon.android.demo.activity.SearchActivity">

    <include layout="@layout/toolbar" />

demonar

sealed class Result<T> {
    data class Success<T>(val call: Call<T>, val response: Response<T>): Result<T>()
    data class Failure<T>(val call: Call<T>, val error: Throwable): Result<T>()
}

demonar

inline fun <reified T> Call<T>.enqueue(crossinline result: (Result<T>) -> Unit) {
    enqueue(object: Callback<T> {
        override fun onFailure(call: Call<T>, error: Throwable) {
            result(Result.Failure(call, error))
        }

        override fun onResponse(call: Call<T>, response: Response<T>) {
            result(Result.Success(call, response))
        }
    })

demonar

//let's say that we have a login method
val call = service.login(username, pass)
//we call the new enqueue
call.enqueue { result ->
    when(result) {
        is Result.Success -> {
                 //myData will have the type passed from the service method
                 val myData = result.response.body()
        }
        is Result.Failure -> {

demonar

inline fun <reified T> Call<T>.executeForResult(): Result<T> {
    return try {
        val response = execute()
        Result.Success(this, response)
    } catch (e: Exception) {
        Result.Failure(this, e)
    }
}

demonar

//Always import
import ReactiveCocoa //Cocoa extensions
import ReactiveSwift //primitives

//Acces UI extensions with .reactive

self.textField.reactive.

//A text listener in a textfield
// self.reactive.lifetime will make the listener to expire on dealloc

demonar

import UIKit

private var kAssociationKeyNextField: UInt8 = 0

extension UITextField {
    @IBOutlet var nextField: UITextField? {
        get {
            return objc_getAssociatedObject(self, &kAssociationKeyNextField) as? UITextField
        }
        set(newField) {

demonar

import UIKit

extension UIView {
    
    func scrollToY(y: CGFloat) {
        scrollToY(y, velocity: 0.25)
    }
    
    func scrollToView(view: UIView) {
        scrollToView(view, velocity: 0.25)