我正在使用Firestore来存储数据,并在Firestorage中用于文件和图像,因此我在使用StreamBuilder来根据Firestore数据加载列表,我想根据Firestore文件名下载图像,但没有发生
我尝试过的是,在其中创建了一个新方法来执行代码以获取下载url,但该方法不起作用
db.create_all()
child: StreamBuilder(
stream: Firestore.instance.collection('data').snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData)
return Container(
child: Center(child: CircularProgressIndicator()));
return ListView.builder(
itemCount: snapshot.data.documents.length,
itemBuilder: (BuildContext context, int index) {
return Card(
child: Column(
children: <Widget>[
Card(
semanticContainer: true,
clipBehavior: Clip.antiAliasWithSaveLayer,
child: Image.network(
imageLoader(snapshot.data.documents[index].data['flie_ref'].toString()),
fit: BoxFit.fill,
),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(0),
),
elevation: 0,
margin: EdgeInsets.all(10),
),
Padding(
padding: EdgeInsets.only(left: 6, right: 6),
child: Card(
elevation: 0,
child: ExpansionTile(
leading: CircleAvatar(
child: Text(snapshot
.data.documents[index].data['amount']
.toString()),
),
title: Text(
snapshot
.data.documents[index].data['desc']
.toString(),
overflow: TextOverflow.ellipsis,
),
children: <Widget>[
Text(snapshot
.data.documents[index].data['desc']
.toString()),
SizedBox(
height: 10,
),
],
),
),
),
],
),
);
});
},
),
我希望输出加载相应的图像,但输出是错误:无法将参数类型'Future'分配给参数类型'Widget'