[firebase_storage] Remove StorageTaskEvent prints (firebase#1944)

packages/firebase_storage/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 3.0.5
+* Removed automatic print statements for `StorageTaskEvent`'s.
+  If you want to see the event status in your logs now, you will have to use the following:
+  `storageReference.put{File/Data}(..).events.listen((event) => print('EVENT ${event.type}'));`
+* Updated `README.md` to explain the above.
+
 ## 3.0.4
 
 * Update google-services Android gradle plugin to 4.3.0 in documentation and examples.

packages/firebase_storage/README.md

@@ -9,8 +9,34 @@ For Flutter plugins for other Firebase products, see [FlutterFire.md](https://gi
 *Note*: This plugin is still under development, and some APIs might not be available yet. [Feedback](https://github.com/flutter/flutter/issues) and [Pull Requests](https://github.com/flutter/plugins/pulls) are most welcome!
 
 ## Usage
+
 To use this plugin, add `firebase_storage` as a [dependency in your pubspec.yaml file](https://flutter.io/platform-plugins/).
 
+### Logging
+
+If you wish to see status events for your upload tasks in your logs, you should listen to the `StorageUploadTask.events` stream.  
+This could look like the following if you are using `StorageReference.putData`:
+
+```dart
+final StorageReference storageReference = FirebaseStorage().ref().child(path);
+
+final StorageUploadTask uploadTask = storageReference.putData(data);
+
+final StreamSubscription<StorageTaskEvent> streamSubscription = uploadTask.events.listen((event) {
+  // You can use this to notify yourself or your user in any kind of way.
+  // For example: you could use the uploadTask.events stream in a StreamBuilder instead
+  // to show your user what the current status is. In that case, you would not need to cancel any
+  // subscription as StreamBuilder handles this automatically.
+
+  // Here, every StorageTaskEvent concerning the upload is printed to the logs.
+  print('EVENT ${event.type}');
+});
+
+// Cancel your subscription when done.
+await uploadTask.onComplete;
+streamSubscription.cancel();
+```
+
 ## Getting Started
 
 See the `example` directory for a complete sample app using Firebase Cloud Storage.

packages/firebase_storage/lib/src/upload_task.dart

@@ -56,7 +56,6 @@ abstract class StorageUploadTask {
 
   void _changeState(StorageTaskEvent event) {
     _resetState();
-    print('EVENT ${event.type}');
     switch (event.type) {
       case StorageTaskEventType.progress:
         isInProgress = true;

packages/firebase_storage/pubspec.yaml

@@ -3,7 +3,7 @@ description: Flutter plugin for Firebase Cloud Storage, a powerful, simple, and
   cost-effective object storage service for Android and iOS.
 author: Flutter Team <[email protected]>
 homepage: https://github.com/flutter/plugins/tree/master/packages/firebase_storage
-version: 3.0.4
+version: 3.0.5
 
 flutter:
   plugin: