Add button to change image of chat

lib/room.dart

@@ -1,5 +1,7 @@
 import 'dart:async';
+import 'dart:io';
 
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:matrix/matrix.dart';
 
@@ -34,6 +36,16 @@ class _RoomPageState extends State<RoomPage> {
     });
   }
 
+  void setAvatar() async {
+    final participants = widget.room.getParticipants();
+    final picked = await FilePicker.platform.pickFiles(type: FileType.image);
+    if (picked == null) return;
+    final file = File(picked.files.single.path!);
+    final bytes = await file.readAsBytes();
+    final uri = await widget.room.client.uploadContent(bytes);
+    await widget.room.client.setAvatarUrl(participants[0].id, uri);
+  }
+
   @override
   void dispose() {
     super.dispose();
@@ -90,6 +102,9 @@ class _RoomPageState extends State<RoomPage> {
       appBar: AppBar(
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
         title: Text(widget.room.getLocalizedDisplayname()),
+        actions: [
+          IconButton(onPressed: setAvatar, icon: const Icon(Icons.image))
+        ],
       ),
       body: Padding(
           padding: const EdgeInsets.all(16.0),

pubspec.lock

@@ -145,6 +145,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.0"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      sha256: "4e42aacde3b993c5947467ab640882c56947d9d27342a5b6f2895b23956954a6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -174,6 +182,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.3.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: b068ffc46f82a55844acfa4fdbb61fad72fa2aef0905548419d97f0f95c456da
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.17"
   flutter_test:
     dependency: "direct dev"
     description: flutter

pubspec.yaml

@@ -40,6 +40,7 @@ dependencies:
   flutter_openssl_crypto: ^0.3.0
   provider: ^6.1.1
   shared_preferences: ^2.2.2
+  file_picker: ^6.1.1
 
 dev_dependencies:
   flutter_test: