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* implement image-export * add layer status observation * remove map status observeration * implement image export on android * update readme * update docs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| import 'dart:typed_data'; | ||
|
|
||
| import 'package:arcgis_example/main.dart'; | ||
| import 'package:arcgis_map_sdk/arcgis_map_sdk.dart'; | ||
| import 'package:flutter/material.dart'; | ||
|
|
||
| class ExportImageExamplePage extends StatefulWidget { | ||
| const ExportImageExamplePage({super.key}); | ||
|
|
||
| @override | ||
| State<ExportImageExamplePage> createState() => _ExportImageExamplePageState(); | ||
| } | ||
|
|
||
| class _ExportImageExamplePageState extends State<ExportImageExamplePage> { | ||
| final _snackBarKey = GlobalKey<ScaffoldState>(); | ||
| ArcgisMapController? _controller; | ||
|
|
||
| Uint8List? _imageBytes; | ||
| final initialCenter = const LatLng(51.16, 10.45); | ||
| late final start = initialCenter; | ||
| final end = const LatLng(51.16551, 10.45221); | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| key: _snackBarKey, | ||
| appBar: AppBar(), | ||
| floatingActionButton: FloatingActionButton( | ||
| child: Icon(Icons.refresh), | ||
| onPressed: () async { | ||
| try { | ||
| final image = await _controller!.exportImage(); | ||
| if (!mounted) return; | ||
| setState(() => _imageBytes = image); | ||
| } catch (e, stack) { | ||
| if (!mounted) return; | ||
| ScaffoldMessenger.of(_snackBarKey.currentContext!) | ||
| .showSnackBar(SnackBar(content: Text("$e"))); | ||
| debugPrint("$e"); | ||
| debugPrintStack(stackTrace: stack); | ||
| } | ||
| }, | ||
| ), | ||
| body: Column( | ||
| children: [ | ||
| Expanded( | ||
| child: ArcgisMap( | ||
| apiKey: arcGisApiKey, | ||
| initialCenter: initialCenter, | ||
| zoom: 12, | ||
| basemap: BaseMap.arcgisNavigationNight, | ||
| mapStyle: MapStyle.twoD, | ||
| onMapCreated: (controller) { | ||
| _controller = controller; | ||
|
|
||
| controller.addGraphic( | ||
| layerId: "pin", | ||
| graphic: PointGraphic( | ||
| longitude: initialCenter.longitude, | ||
| latitude: initialCenter.latitude, | ||
| height: 20, | ||
| attributes: Attributes({ | ||
| 'id': "pin1", | ||
| 'name': "pin1", | ||
| 'family': 'Pins', | ||
| }), | ||
| symbol: PictureMarkerSymbol( | ||
| assetUri: 'assets/navPointer.png', | ||
| width: 56, | ||
| height: 56, | ||
| ), | ||
| ), | ||
| ); | ||
|
|
||
| controller.addGraphic( | ||
| layerId: "line", | ||
| graphic: PolylineGraphic( | ||
| paths: [ | ||
| [ | ||
| [start.longitude, start.latitude, 10.0], | ||
| [end.longitude, end.latitude, 10.0], | ||
| ] | ||
| ], | ||
| symbol: const SimpleLineSymbol( | ||
| color: Colors.purple, | ||
| style: PolylineStyle.shortDashDotDot, | ||
| width: 3, | ||
| marker: LineSymbolMarker( | ||
| color: Colors.green, | ||
| colorOpacity: 1, | ||
| style: MarkerStyle.circle, | ||
| ), | ||
| ), | ||
| attributes: Attributes({'id': "line-1", 'name': "line-1"}), | ||
| ), | ||
| ); | ||
| }, | ||
| ), | ||
| ), | ||
| const Divider(), | ||
| Text( | ||
| _imageBytes == null | ||
| ? "Press the button to generate an image" | ||
| : "This image is a screenshot of the mapview! ⬇️", | ||
| style: Theme.of(context).textTheme.bodyLarge, | ||
| ), | ||
| const SizedBox(height: 8), | ||
| Expanded( | ||
| child: _imageBytes == null | ||
| ? SizedBox() | ||
| : Container( | ||
| padding: EdgeInsets.all(16), | ||
| decoration: BoxDecoration( | ||
| color: Theme.of(context).primaryColor, | ||
| borderRadius: BorderRadius.circular(12), | ||
| ), | ||
| child: ClipRRect( | ||
| child: Image.memory(_imageBytes!), | ||
| borderRadius: BorderRadius.circular(12), | ||
| ), | ||
| ), | ||
| ), | ||
| SizedBox(height: MediaQuery.paddingOf(context).bottom), | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
| } |
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