如何解决如何建立带有抖动和火力的视频列表?
我是不熟悉Flutter的人,我想用Flutter和Firebase建立一个视频列表,因此,我用ListView.builder()
构建了它,它可以正常工作,但是您知道ListView.builder()
仅可以构建屏幕上的内容因此,如果我向下滚动并希望看到某些内容,它将重建,我不希望它重建。
代码
return StreamBuilder<Object>(
stream: Firestore.instance
.collection('Khatma Collection')
.document('Khatma 1')
.collection('Videos')
.snapshots(),builder: (context,AsyncSnapshot snapshot) {
if (snapshot.hasData) {
return ListView.builder(
shrinkWrap: true,itemCount: snapshot.data.documents.length,itemBuilder: (context,i) {
var rng = new Random();
int ii = rng.nextInt(4);
if (ii == iii) {
} else {
iii = ii;
var link = snapshot.data.documents[ii].data['Link'];
var uploader = snapshot.data.documents[ii].data['Uploader'];
var likes = snapshot.data.documents[ii].data['Likes'];
var like = likes.toString();
bool liked;
if (int.parse(like) > 0) {
liked = true;
} else if (int.parse(like) == 0) {
liked = false;
}
final videoPlayerController =
VideoPlayerController.network(link);
chewieController = ChewieController(
allowMuting: true,autoInitialize: true,deviceOrientationsAfterFullScreen: orientation,allowFullScreen: true,aspectRatio: 16 / 9,videoPlayerController: videoPlayerController,);
return SingleChildScrollView(
child: Column(
children: [
Chewie(
controller: chewieController,),],);
}
},);
}
},
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