adds crete shortDynamicLink functionality (kt)

Author: Cristian Avalos

dynamiclinks/app/src/main/java/com/google/firebase/quickstart/deeplinks/kotlin/MainActivity.kt

@@ -8,16 +8,19 @@ import com.google.android.material.snackbar.Snackbar
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import android.util.Log
+import android.widget.TextView
 import com.google.firebase.dynamiclinks.PendingDynamicLinkData
 import com.google.firebase.dynamiclinks.ktx.androidParameters
 import com.google.firebase.dynamiclinks.ktx.dynamicLink
 import com.google.firebase.dynamiclinks.ktx.dynamicLinks
+import com.google.firebase.dynamiclinks.ktx.shortLinkAsync
+import com.google.firebase.dynamiclinks.ktx.component1
+import com.google.firebase.dynamiclinks.ktx.component2
 import com.google.firebase.ktx.Firebase
 import com.google.firebase.quickstart.deeplinks.R
 import com.google.firebase.quickstart.deeplinks.databinding.ActivityMainBinding
 
 class MainActivity : AppCompatActivity() {
-
     // [START on_create]
     override fun onCreate(savedInstanceState: Bundle?) {
         // [START_EXCLUDE]
@@ -35,10 +38,19 @@ class MainActivity : AppCompatActivity() {
         val newDeepLink = buildDeepLink(Uri.parse(DEEP_LINK_URL), 0)
         linkSendTextView.text = newDeepLink.toString()
 
+        // create a short link and display it in the UI
+        buildShortLinkFromParams(Uri.parse(DEEP_LINK_URL), 0)
+
         // Share button click listener
         binding.buttonShare.setOnClickListener { shareDeepLink(newDeepLink.toString()) }
         // [END_EXCLUDE]
 
+        binding.buttonShareShortLink.setOnClickListener {
+          val shortLinkTextView = findViewById<TextView>(R.id.shortLinkViewSend);
+          val shortDynamicLink = shortLinkTextView.text;
+          shareDeepLink(shortDynamicLink.toString());
+        }
+
         // [START get_deep_link]
         Firebase.dynamicLinks
                 .getDynamicLink(intent)
@@ -106,6 +118,29 @@ class MainActivity : AppCompatActivity() {
         return link.uri
     }
 
+    @VisibleForTesting
+    fun buildShortLinkFromParams(deepLink: Uri, minVersion: Int) {
+      val uriPrefix = getString(R.string.dynamic_links_uri_prefix)
+
+      // Set dynamic link parameters:
+      //  * URI prefix (required)
+      //  * Android Parameters (required)
+      //  * Deep link
+      Firebase.dynamicLinks.shortLinkAsync {
+        link = deepLink
+        domainUriPrefix = uriPrefix
+        androidParameters {
+          minimumVersion = minVersion
+        }
+      }.addOnSuccessListener { (shortLink, flowchartLink) ->
+        val shortLinkTextView = findViewById<TextView>(R.id.shortLinkViewSend);
+        shortLinkTextView.text = shortLink.toString();
+      }.addOnFailureListener(this) { e ->
+        Log.e(TAG, e.toString());
+        throw java.lang.Error(e.toString());
+      }
+    }
+
     private fun shareDeepLink(deepLink: String) {
         val intent = Intent(Intent.ACTION_SEND)
         intent.type = "text/plain"