android/gradle.properties

@@ -1 +1,2 @@
 org.gradle.jvmargs=-Xmx1536M
+android.enableR8=true

lib/components/GravatarImage.dart

@@ -1,9 +1,45 @@
-import 'package:flutter/material.dart';
-
+import 'package:flutter/painting.dart';
 import 'package:crypto/crypto.dart';
 
-class GravatarImageProvider extends NetworkImage {
-  GravatarImageProvider(String email)
-      : super("https://secure.gravatar.com/avatar/" +
-            md5.convert(email.trim().toLowerCase().codeUnits).toString());
+class GravatarImageProvider implements NetworkImage {
+
+  String _email;
+
+  GravatarImageProvider(this._email);
+
+  @override
+  String get url {
+    return "https://secure.gravatar.com/avatar/" +
+        md5.convert(_email.trim().toLowerCase().codeUnits).toString();
+  }
+
+  @override
+  Map<String, String> get headers {
+    // We don't need special headers for our request, so we can just return null here
+    return null;
+  }
+
+  @override
+  ImageStreamCompleter load(NetworkImage key, DecoderCallback decode) {
+    return load(key, decode);
+  }
+
+  @override
+  Future<NetworkImage> obtainKey(ImageConfiguration configuration) {
+    return obtainKey(configuration);
+  }
+
+  @override
+  // Returning null here will set this to 1.0
+  double get scale => null;
+
+  @override
+  Future<bool> evict({ImageCache cache, ImageConfiguration configuration = ImageConfiguration.empty}) {
+    return evict(cache: cache,configuration: configuration);
+  }
+
+  @override
+  ImageStream resolve(ImageConfiguration configuration) {
+    return resolve(configuration);
+  }
 }

pubspec.lock

@@ -1,5 +1,5 @@
 # Generated by pub
-# See https://www.dartlang.org/tools/pub/glossary#lockfile
+# See https://dart.dev/tools/pub/glossary#lockfile
 packages:
   after_layout:
     dependency: "direct main"
@@ -14,28 +14,28 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.0.11"
   args:
     dependency: transitive
     description:
       name: args
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.1"
+    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.4.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   charcode:
     dependency: transitive
     description:
@@ -63,7 +63,7 @@ packages:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.6"
+    version: "2.1.3"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -124,49 +124,49 @@ packages:
       name: image
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.7"
+    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.3+1"
+    version: "0.12.6"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.1.8"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.2"
+    version: "1.6.4"
   pedantic:
     dependency: transitive
     description:
       name: pedantic
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.4.0"
+    version: "1.8.0+1"
   petitparser:
     dependency: transitive
     description:
       name: petitparser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.4.0"
   quiver:
     dependency: transitive
     description:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.5"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -178,7 +178,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.4"
+    version: "1.5.5"
   stack_trace:
     dependency: transitive
     description:
@@ -192,14 +192,14 @@ packages:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.8"
+    version: "2.0.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   term_glyph:
     dependency: transitive
     description:
@@ -213,7 +213,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2"
+    version: "0.2.11"
   typed_data:
     dependency: transitive
     description:
@@ -234,7 +234,7 @@ packages:
       name: xml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.3.1"
+    version: "3.5.0"
   yaml:
     dependency: transitive
     description:
@@ -243,4 +243,4 @@ packages:
     source: hosted
     version: "2.1.15"
 sdks:
-  dart: ">=2.1.0 <3.0.0"
+  dart: ">=2.4.0 <3.0.0"

pubspec.yaml

@@ -4,7 +4,7 @@ description: Vikunja as Flutter cross platform app
 version: 0.1.0
 
 environment:
-  sdk: ">=2.0.0-dev.63.0 <3.0.0"
+  sdk: ">=2.1.0 <3.0.0"
 
 dependencies:
   flutter: