navczydev

// add this line to libs.versions.toml

// under [versions] section
emoji2-emojipicker = "1.4.0"

// under [libraries] section
androidx-emoji2-emojipicker = { group = "androidx.emoji2", name = "emoji2-emojipicker", version.ref = "emoji2-emojipicker" }

// app-level build.gradle
implementation(libs.androidx.emoji2.emojipicker)

navczydev

// 1. It only takes 1 parameter - [MenuProvider]

/*
* We need to manually remove the MenuProvider by calling removeMenuProvider().
* */
addMenuProvider(object : MenuProvider {
    override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
        menuInflater.inflate(R.menu.main_menu, menu)
    }
    override fun onMenuItemSelected(menuItem: MenuItem): Boolean {

navczydev

fun processNullableName(name: String?) {

    // Force unwrap !!
    println("Name is: ${name!!}")

    // Elvis operator ?:
    println("Name is: ${name ?: "Kotlin"}")

    // If statement

navczydev

import UIKit

var name:String? = "Swift"

// force un-wrap
print("Name is \(name!)")

name = nil
// nil coalescing operator ??
print("Name is ??: \(name ?? "Swift")")

navczydev

<com.google.android.material.materialswitch.MaterialSwitch
    android:layout_width="match_parent"
    android:layout_height="48dp"
    android:layout_margin="24dp"
    android:checked="true | false"
    android:text="MaterialSwitch Checked"
    app:layout_constraintTop_toBottomOf="@id/ms_1" />

navczydev

<com.google.android.material.checkbox.MaterialCheckBox
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:layout_margin="24dp"
     android:text="MaterialCheckBox"
     app:checkedState="unchecked | checked | indeterminate"
     app:errorShown="true"
     app:errorAccessibilityLabel="Error label for accessible goes here"
/>

navczydev

AndroidView(factory = { context ->
            MaterialCheckBox(context).apply {
                text = "Checkbox from 1.7"
                
                addOnCheckedStateChangedListener { checkBox, state ->
                    when (state) {
                        STATE_INDETERMINATE -> {
                            stateValue.value = STATE_INDETERMINATE
                        }

navczydev

@Composable
fun MaterialSwitch170(updateCheckStateError: () -> Unit, resetCheckErrorState: () -> Unit) {
    AndroidView(factory = { context ->
        MaterialSwitch(context).apply {
            text = context.resources.getString(R.string.switch_from_1_7)
            setThumbIconResource(R.drawable.baseline_check_circle_24)
            setOnCheckedChangeListener { _, isChecked ->
                when (isChecked) {
                    true -> updateCheckStateError()
                    false -> {

navczydev

rgChoices.setOnCheckedChangeListener { _, index ->
    when {
      
        index == R.id.rb_choice1 && rbChoice1.isChecked -> {
            Log.d(TAG, "onCreate: First choice checked")
        }
        
        index == R.id.rb_choice2 && rbChoice2.isChecked -> {
            Log.d(TAG, "onCreate: Second choice checked")
        }

navczydev

btnClearCheck.setOnClickListener {

    // set the checkedChangeListener to null
    
    rgChoices.setOnCheckedChangeListener(null)
    
    rgChoices.clearCheck()
    
    // re-set the checkedChangeListener