CustomTabs (android.support.customtabs) extensions for Kotlin

CustomTabs.kt

import android.app.Fragment
import android.content.Context
import android.net.Uri
import android.support.customtabs.CustomTabsIntent
import android.support.v4.content.ContextCompat
import android.support.v4.app.Fragment as SupportFragment

fun Context.customTab(url: String, init: (CustomTabsIntent.Builder.() -> Unit)? = null) {

    val customTabBuilder = CustomTabsIntent.Builder()
            .addDefaultShareMenuItem()
            .setShowTitle(true)
            // other default settings for your custom tabs.

    init?.let { customTabBuilder.init() }

    customTabBuilder.build().launchUrl(this, Uri.parse(url))
}

fun Fragment.customTab(url: String, init: (CustomTabsIntent.Builder.() -> Unit)? = null) {
    activity.customTab(url, init)
}

fun SupportFragment.customTab(url: String, init: (CustomTabsIntent.Builder.() -> Unit)? = null) {
    activity.customTab(url, init)
}