EmmanuelGuther

{
"uid": "1309SS",
"userType": "single"
}

EmmanuelGuther

https://akabab.github.io/superhero-api

https://rickandmortyapi.com/api/

https://docs.spacexdata.com/?version=latest

https://unsplash.com/developers

EmmanuelGuther

How should an image url be in the api? Well it should be an object of urls images not just a url, so we can have different sizes.

Recommended image dimensions for mobile app

Thumb (~32x48) /images/xs/1-a-bomb.jpg

Small (~160x240) /images/sm/1-a-bomb.jpg

Medium (~320x480) /images/md/1-a-bomb.jpg

EmmanuelGuther

fun launchEmail(activity: FragmentActivity, subject: String, text: String) {
    val i = Intent(Intent.ACTION_SEND)
    i.type = "message/rfc822"
    i.putExtra(Intent.EXTRA_SUBJECT, subject)
    i.putExtra(Intent.EXTRA_TEXT, text)
    try {
        activity.startActivity(Intent.createChooser(i, "Send mail..."))
    } catch (ex: android.content.ActivityNotFoundException) {
        Toast.makeText(activity, "There are no email clients installed.", Toast.LENGTH_SHORT).show()
    }

EmmanuelGuther

fun Group.addOnClickListener(listener: (view: View) -> Unit) {
    referencedIds.forEach { id ->
        rootView.findViewById<View>(id).setOnClickListener(listener)
    }
}

EmmanuelGuther

companion object {
        var callbackLoadMore: ((Int) -> Unit)? = null
        var callbackLikeClick: ((Promotion) -> Unit)? = null
        fun forPage(callbackLoadMore: (Int) -> Unit, callbackLikeClick: (Promotion) -> Unit): ShowcasePageOneFragment {
            this.callbackLoadMore = callbackLoadMore
            this.callbackLikeClick = callbackLikeClick
            return ShowcasePageOneFragment()
        }
    }

EmmanuelGuther

/**
 * A lifecycle-aware observable that sends only new updates after subscription, used for events like
 * navigation and Snackbar messages.
 *
 *
 * This avoids a common problem with events: on configuration change (like rotation) an update
 * can be emitted if the observer is active. This LiveData only calls the observable if there's an
 * explicit call to setValue() or call().
 *
 *

EmmanuelGuther

const val CARD_NUMBER_SEPARATOR = " "
const val CARD_DATE_SEPARATOR = "/"

fun EditText.creditCardNumberFormatter(afterTextChanged: (String) -> Unit) {
    var count = 0

    this.addTextChangedListener(object : TextWatcher {
        override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
        }

EmmanuelGuther

class LuhnValidator {
    fun isValid(cardNumber: String): Boolean {
        var s1 = 0
        var s2 = 0
        val reverse = StringBuffer(cardNumber).reverse().toString()
        for (i in reverse.indices) {
            val digit = Character.digit(reverse[i], 10)
            when {
                i % 2 == 0 -> s1 += digit
                else -> {

EmmanuelGuther

/** A viewpager with possibilities of being blocked the swipe */
class BViewPager(context: Context, attrs: AttributeSet) : ViewPager(context, attrs) {

    private var enabledSwipe: Boolean = false

    init {
        this.enabledSwipe = true
    }

    override fun onTouchEvent(event: MotionEvent): Boolean = when {