Add spinner when sending feedback (#4384)

Author: lfkellogg

firebase-appdistribution/src/main/java/com/google/firebase/appdistribution/impl/FeedbackActivity.java

@@ -15,7 +15,6 @@
 package com.google.firebase.appdistribution.impl;
 
 import static android.view.View.GONE;
-import static android.view.View.INVISIBLE;
 import static android.view.View.VISIBLE;
 
 import android.graphics.Bitmap;
@@ -147,13 +146,13 @@ private Bitmap readScreenshot() {
   }
 
   public void submitFeedback(View view) {
+    setSubmittingStateEnabled(true);
     if (releaseName == null) {
       // Don't actually send feedback in development-mode
       Toast.makeText(this, R.string.feedback_no_release, Toast.LENGTH_LONG).show();
       finish();
       return;
     }
-    setSubmittingStateEnabled(true);
     EditText feedbackText = findViewById(R.id.feedbackText);
     CheckBox screenshotCheckBox = findViewById(R.id.screenshotCheckBox);
     feedbackSender
@@ -176,7 +175,8 @@ public void submitFeedback(View view) {
   }
 
   public void setSubmittingStateEnabled(boolean loading) {
-    findViewById(R.id.sendButton).setVisibility(loading ? INVISIBLE : VISIBLE);
+    findViewById(R.id.sendButton).setVisibility(loading ? GONE : VISIBLE);
+    findViewById(R.id.sendSpinner).setVisibility(loading ? VISIBLE : GONE);
     findViewById(R.id.feedbackText).setEnabled(!loading);
     findViewById(R.id.feedbackText).setFocusable(!loading);
   }

firebase-appdistribution/src/main/res/layout/activity_feedback.xml

@@ -49,6 +49,16 @@
             android:minHeight="48dp"
             app:srcCompat="@drawable/ic_baseline_send_24" />
 
+        <ProgressBar
+            android:id="@+id/sendSpinner"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_weight="0"
+            android:minWidth="48dp"
+            android:minHeight="48dp"
+            android:visibility="gone"/>
+
     </LinearLayout>
 
     <View

firebase-appdistribution/src/main/res/values/themes.xml

@@ -1,3 +1,5 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
-    <style name="FeedbackTheme" parent="Theme.AppCompat.Light.NoActionBar" />
+    <style name="FeedbackTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="colorAccent">#000000</item>
+    </style>
 </resources>