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flutter google maps custom marker

Clumsy Chinchilla answered on July 8, 2021 Popularity 10/10 Helpfulness 2/10

answer flutter google maps custom marker

related custom marker google maps flutter

flutter google maps custom marker

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import 'dart:typed_data';
import 'dart:ui';

import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';

class MarkerInfo extends StatefulWidget {
  final Function getBitmapImage;
  final String text;
  MarkerInfo({Key key, this.getBitmapImage, this.text}) : super(key: key);

  @override
  _MarkerInfoState createState() => _MarkerInfoState();
}

class _MarkerInfoState extends State<MarkerInfo> {
  final markerKey = GlobalKey();

  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) => getUint8List(markerKey)
        .then((markerBitmap) => widget.getBitmapImage(markerBitmap)));
  }

  Future<Uint8List> getUint8List(GlobalKey markerKey) async {
    RenderRepaintBoundary boundary =
        markerKey.currentContext.findRenderObject();
    var image = await boundary.toImage(pixelRatio: 2.0);
    ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
    return byteData.buffer.asUint8List();
  }

  @override
  Widget build(BuildContext context) {
    return RepaintBoundary(
      key: markerKey,
      child: Container(
        padding: EdgeInsets.only(bottom: 29),
        child: Container(
          width: 100,
          height: 100,
          color: Color(0xFF000000),
          child: Text(
            widget.text,
            style: TextStyle(
              color: Color(0xFFFFFFFF),
            ),
          ),
        ),
      ),
    );
  }
}

Popularity 10/10 Helpfulness 2/10 Language whatever

Source: stackoverflow.com

Tags: flutter google-maps marker whatever

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Contributed on Jul 08 2021

Clumsy Chinchilla

0 Answers Avg Quality 2/10

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Future<Uint8List> getBytesFromAsset(String path, int width) async {
    ByteData data = await rootBundle.load(path);
    ui.Codec codec = await ui.instantiateImageCodec(data.buffer.asUint8List(),
        targetWidth: width);
    ui.FrameInfo fi = await codec.getNextFrame();
    return (await fi.image.toByteData(format: ui.ImageByteFormat.png))!
        .buffer
        .asUint8List();
  }
 
 // init marker icon 
 
  final Uint8List markerIcon2 =
        await getBytesFromAsset('assets/images/m1.png', 99);
    final Uint8List markerIcon1 =
        await getBytesFromAsset('assets/images/camion.png', 139);
        
    teste1 = BitmapDescriptor.fromBytes(markerIcon2);
    teste2 = BitmapDescriptor.fromBytes(markerIcon1);
    
  // show marker 
    Marker(icon: teste1)
    Marker(icon: teste2)

Popularity 10/10 Helpfulness 3/10 Language dart

Source: Grepper

Tags: dart

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Contributed on Mar 13 2022

Dead Dormouse

0 Answers Avg Quality 2/10

flutter google maps custom marker

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