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samples/platform_channels/lib/src/platform_image_demo.dart
Eric Windmill 2999d738b8 Dart 3.9 / Flutter 3.35 [first LLM release] (#2714)
I got carried away with Gemini and basically rewrote CI and the release
process for the new LLM reality. This work was largely completed by
Gemini.

- Bump all SDK versions to the current beta (3.9.0-0)
- Run `flutter channel beta`
- Wrote `ci_script.dart` to replace the bash scripts
- Converted repository to pub workspace #2499 
- Added llm.md and release.md
- Added redirect for deprecated Samples Index

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I have added sample code updates to the [changelog].
- [x] I updated/added relevant documentation (doc comments with `///`).
2025-08-14 12:26:24 -07:00

75 lines
2.4 KiB
Dart

// Copyright 2020 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:platform_channels/src/image_basic_message_channel.dart';
/// Demonstrates how to use [BasicMessageChannel] to get an image from platform.
///
/// The widget uses [Image.memory] to display the image obtained from the
/// platform.
class PlatformImageDemo extends StatefulWidget {
const PlatformImageDemo({super.key});
@override
State<PlatformImageDemo> createState() => _PlatformImageDemoState();
}
class _PlatformImageDemoState extends State<PlatformImageDemo> {
Future<Uint8List>? imageData;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('Platform Image Demo')),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: FractionallySizedBox(
widthFactor: 1,
heightFactor: 0.6,
child: FutureBuilder<Uint8List>(
future: imageData,
builder: (context, snapshot) {
if (snapshot.connectionState == ConnectionState.none) {
return const Placeholder();
} else if (snapshot.hasError) {
return Center(
child: Text(
(snapshot.error as PlatformException).message!,
),
);
} else if (snapshot.connectionState ==
ConnectionState.done) {
return Image.memory(
snapshot.data!,
fit: BoxFit.fill,
);
}
return const CircularProgressIndicator();
},
),
),
),
const SizedBox(height: 16),
FilledButton(
onPressed: imageData != null
? null
: () {
setState(() {
imageData = PlatformImageFetcher.getImage();
});
},
child: const Text('Get Image'),
),
],
),
),
);
}
}