圆形图像文件

本文介绍了圆形图像文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我执行了这段代码以从Firestore获取图像并将其用作地图标记的图标.

I did this code to get an image from firestore and use it as an icon for a Map Marker.

final StorageReference storageReference = FirebaseStorage().ref().child("ProfilePictures/" + widget.userId); String avatarDownloadPath = await storageReference.getDownloadURL(); final File _avatar = await DefaultCacheManager().getSingleFile(avatarDownloadPath); Uint8List __avatar = await _avatar.readAsBytes(); BitmapDescriptor avatar = BitmapDescriptor.fromBytes(__avatar); setState(() { _markers.add(Marker(markerId: MarkerId("UserPosition"), position: userLocation, icon: avatar )); });

此代码有效，但我想将图像设置为圆形，但我不知道该怎么做...

This code works but I want to set the image a round shape and I don't know how to do this...

如果您还知道如何像这样添加一个圆并为其设置动画，我将非常满意:

If you also know how to add a circle around and animate it like this I will be really satisfied:

(我没有找到更具代表性的东西，但我只想一个圆圈)

(I didn't find something more representative but I just want one circle)

推荐答案

您可以使用Canvas绘制圆形图像，并使用PictureRecorder保存为最终图像并将其放置在标记位图描述符fyi中:自定义标记

You can use use Canvas to draw a round image and use PictureRecorder to save as a final image and put it in the marker bitmapdescriptor, fyi: custom marker

在文章中用ImagePainter替换TextPainter

Replace TextPainter with ImagePainter in the article

OR

使用小部件自定义标记