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这篇文章给大家介绍Flutter中怎么实现一个微信朋友圈功能，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:nursery_school_gardener/view/main/dynamic/FriendView/FriendCell.dart';
class Dynamic extends StatefulWidget {
@override
_DynamicState createState() => _DynamicState();
}
class _DynamicState extends State<Dynamic> {
// 朋友圈信息数据
List<Result> cachesData;
@override
void initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return CustomScaffold(
contentWidget: Expanded(
flex: 1,
child: ListView.builder(// 朋友圈列表
itemBuilder: (BuildContext context, int index) {
// 每一条的朋友圈
return FriendCell(
result: cachesData[index],//将数据传入每一条列表中
);
},
itemCount: cachesData.length(),
),
),
);
}
}上面就是列表，下面是列表中的每一个样式
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:nursery_school_gardener/util/ColorUtils.dart';
class FriendCell extends StatefulWidget {
// 上一页传过来的数据
Result result;
FriendCell({this.result, Key key}) : super(key: key);
@override
_FriendCellState createState() => _FriendCellState();
}
class _FriendCellState extends State<FriendCell> {
TextEditingController editingController = new TextEditingController();
// 照片展示样式，1张、2｜4张、或者其他
Widget makePictureCount(List<KgPhotosList> pics) {
if (pics.length == 1) {
return GestureDetector(
onTap: () {
//点击图片
},
child: Container(
margin: EdgeInsets.fromLTRB(0, 10, 50, 10),
width: MediaQuery.of(context).size.width - 164,
height: (MediaQuery.of(context).size.width - 164) / 2,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("images/hsf2.jpg"),//展示的图片根据需求展示不同类型
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
),
);
} else if (pics.length == 4 || pics.length == 2) {
return Container(
margin: EdgeInsets.fromLTRB(0, 10, 0, 10),
child: Wrap(
spacing: 5,
runSpacing: 5,
alignment: WrapAlignment.start,
children: pics
.map(
(p) => GestureDetector(
onTap: () {
//点击图片
},
child: Container(
width: (MediaQuery.of(context).size.width - 164) / 2.2,
height: (MediaQuery.of(context).size.width - 164) / 2.2,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("images/hsf2.jpg"),//展示的图片根据需求展示不同类型
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
),
),
)
.toList(),
),
);
} else if (pics.length == 3 || pics.length > 4) {
return Container(
margin: EdgeInsets.fromLTRB(0, 10, 0, 10),
child: Wrap(
spacing: 5,
runSpacing: 5,
alignment: WrapAlignment.start,
children: pics
.map(
(p) => GestureDetector(
onTap: () {
//点击图片
},
child: Container(
width: (MediaQuery.of(context).size.width - 164) / 3,
height: (MediaQuery.of(context).size.width - 164) / 3,
decoration: BoxDecoration(
image: DecorationImage(
image:AssetImage("images/hsf2.jpg"),//展示的图片根据需求展示
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
),
),
)
.toList(),
),
);
} else {
return Container();
}
}
bool _isShow = true;
@override
Widget build(BuildContext context) {
bool deleteStatus = widget.result.addTeacher !=
Variable.share().loginData.result.userInfo.id;
return Container(
margin: new EdgeInsets.only(left: 12, right: 12, bottom: 12),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: ColorUtils.WHITE,
boxShadow: [
BoxShadow(
color: ColorUtils.MAIN_BG, blurRadius: 10.0, spreadRadius: 1.0),
],
),
child: Stack(
children: [
Container(
child: Column(
children: <Widget>[
Flex(
direction: Axis.horizontal,
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
//头像
Container(
width: 40,
height: 40,
margin: EdgeInsets.fromLTRB(15, 20, 15, 0),
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("images/hsf2.jpg"),//用户头像
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
),
Expanded(
child: Container(
margin: EdgeInsets.fromLTRB(0, 20, 60, 0),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
//姓名
Text(
"姓名",
style: TextStyle(
fontSize: 17,
color: Color(0XFF4D6CAB),
fontWeight: FontWeight.w500),
),
SizedBox(
height: 5,
),
//动态内容
Text(
"内容",
style: TextStyle(fontSize: 15),
),
SizedBox(
height: 5,
),
//发表的图片，上一页面传递来的属性
makePictureCount(widget.result.kgPhotosList),
],
),
),
),
],
),
Stack(
children: [
Flex(
direction: Axis.horizontal,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
//发布的时间
Container(
margin: EdgeInsets.only(left: 70, bottom: 5),
child: Text(
"时间",
style: TextStyle(
fontSize: 12, color: Color(0XFFB2B2B2)),
),
),
//删除朋友圈按钮 deleteStatus代表是否是自己的朋友圈，是可以删除，
Offstage(
offstage: deleteStatus,
child: GestureDetector(
onTap: () {
CustomDialog.show(context,
title: "动态删除",
message: "你确定要删除当前动态吗？", callBack: (flag) {
if (flag) {
delteDynamic();
}
});
},
child: Container(
margin: EdgeInsets.only(left: 5, bottom: 5),
child: Text(
"删除",
style: TextStyle(
fontSize: 12,
color: ColorUtils.BLUE_NORMAL),
),
),
),
),
//管理员驳回按钮，看是否是管理员，可以通过和驳回朋友圈
Offstage(
offstage: ToolUtils.isContainsElement(
Variable.share().USER_DYNAMIC_TYPE),
child: GestureDetector(
onTap: () {
CustomDialog.show(
context,
title: "动态通过",
message: "你确定要通过当前动态吗？",
callBack: (flag) {
if (flag) {}
},
);
},
child: Container(
margin: EdgeInsets.only(left: 5, bottom: 5),
child: Text(
"通过",
style: TextStyle(
fontSize: 12,
color: ColorUtils.BLUE_NORMAL),
),
),
),
),
//管理员驳回按钮，看是否是管理员，可以通过和驳回朋友圈
Offstage(
offstage: ToolUtils.isContainsElement(
Variable.share().USER_DYNAMIC_TYPE),
child: GestureDetector(
onTap: () {
CustomInputDialog.show(context,
title: "动态驳回",
message: "你确定要驳回当前动态吗？", callBack: (flag) {
if (flag) {}
});
},
child: Container(
margin: EdgeInsets.only(left: 5, bottom: 5),
child: Text(
"驳回",
style: TextStyle(
fontSize: 12,
color: ColorUtils.BLUE_NORMAL),
),
),
),
),
],
),
Container(
margin: EdgeInsets.only(right: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Offstage(
offstage: _isShow,
child: AnimatedContainer(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5),
color: Color(0XFF4C5154)),
duration: Duration(milliseconds: 100),
width: 130,
height: 30,
child: Flex(
direction: Axis.horizontal,
children: <Widget>[
// 点赞模块
Expanded(
flex: 1,
child: Row(
mainAxisAlignment:
MainAxisAlignment.center,
children: <Widget>[
Icon(
Icons.favorite_border,
color: Colors.white,
size: 15,
),
SizedBox(
width: 5,
),
InkWell(
onTap: () {
// 点赞功能
setState(
() {
isShow();
addPraise();
},
);
},
child: Text(
"赞",
style: TextStyle(
color: Colors.white,
fontSize: 12),
),
),
],
),
),
// 评论模块
Expanded(
flex: 1,
child: Row(
mainAxisAlignment:
MainAxisAlignment.center,
children: <Widget>[
Icon(
Icons.sms,
color: Colors.white,
size: 15,
),
SizedBox(
width: 5,
),
InkWell(
onTap: () {
setState(
() {
isShow();
addDiscuss("我是评论内容");
},
);
},
child: Text(
"评论",
style: TextStyle(
color: Colors.white,
fontSize: 12),
),
),
],
),
),
],
),
),
),
SizedBox(
width: 10,
),
InkWell(
onTap: () {
isShow();
},
child: Image.asset(
"images/button.png",
width: 22,
height: 18,
),
),
],
),
),
],
),
//评论模块
Offstage(
offstage:
widget.result.kgPraiseList.length == 0 ? true : false,
child: Container(
constraints: BoxConstraints(minWidth: double.infinity),
margin: EdgeInsets.fromLTRB(70, 10, 15, 0),
padding:
EdgeInsets.only(top: 5, bottom: 5, left: 10, right: 10),
//因为点赞和评论是两个控件，所以当他俩存在的时候需要设置对应的圆角，保证UI
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(8),
topRight: Radius.circular(8),
bottomLeft: Radius.circular(
widget.result.kgDiscussList.length == 0 ? 8 : 0),
bottomRight: Radius.circular(
widget.result.kgDiscussList.length == 0 ? 8 : 0)),
color: Color(0XFFF3F3F5),
),
child: Wrap(
alignment: WrapAlignment.start,
runSpacing: 5,
spacing: 5,
children: likeView(widget.result.kgPraiseList.length)),
),
),
//点赞模块
Offstage(
offstage:
widget.result.kgDiscussList.length == 0 ? true : false,
child: Container(
constraints: BoxConstraints(minWidth: double.infinity),
margin: EdgeInsets.fromLTRB(70, 0, 15, 0),
padding:
EdgeInsets.only(top: 5, bottom: 5, left: 10, right: 10),
//因为点赞和评论是两个控件，所以当他俩存在的时候需要设置对应的圆角，保证UI
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(
widget.result.kgPraiseList.length == 0 ? 8 : 0),
topRight: Radius.circular(
widget.result.kgPraiseList.length == 0 ? 8 : 0),
bottomLeft: Radius.circular(8),
bottomRight: Radius.circular(8)),
color: Color(0XFFF3F3F5),
),
child: Wrap(
alignment: WrapAlignment.start,
runSpacing: 5,
spacing: 5,
children: talkView(widget.result.kgDiscussList.length)),
),
),
SizedBox(
height: 10,
),
],
),
),
Offstage(
offstage: true,
child: Container(
margin: new EdgeInsets.only(
left: MediaQuery.of(context).size.width - 50, top: 20),
child: Image.asset(
"images/ic_no_network.png",
width: 18,
height: 18,
),
),
),
],
),
);
}
// 点赞和评论模块是否显示
void isShow() {
setState(() {
_isShow = !_isShow;
});
}
/*
* 删除朋友圈
* */
void delteDynamic() {
// 删除朋友圈
}
/*
* 发布评论
* */
void addDiscuss(String discuss) {
// 发布评论
}
/*
* 点赞
* */
void addPraise() {
// 点赞
}
//点赞
List<Widget> likeView(int count) {
List<Widget> result = [];
// TODO: 这里不要删除，后期肯定会改回改版本，这个是展示所有点赞人的信息，因为项目需要这里注释了，只用下面的方式
/*
for (int i = 0; i < count; i++) {
var praise = widget.result.kgPraiseList[i];
result.add(
Container(
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.favorite_border,
size: 13,
color: Color(0XFF566B94),
),
SizedBox(width: 5),
Container(
child: Text(
ToolUtils.isEmptyOrNull(praise.praisePerson),
style: TextStyle(
color: Color(0XFF566B94),
fontSize: 15,
fontWeight: FontWeight.w500),
),
)
],
),
),
);
}
*/
// 点赞数量
if (widget.result.kgPraiseList.length > 0) {
result.add(
Container(
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.favorite,
size: 16,
color: Color(0XFF4D6CAB),
),
SizedBox(width: 5),
Container(
child: Text(
"${widget.result.kgPraiseList.length}人赞过",
style: TextStyle(
color: Color(0XFF4D6CAB),
fontSize: 14,
fontWeight: FontWeight.w500),
),
)
],
),
),
);
}
return result;
}
//评论
List<Widget> talkView(int count) {
List<Widget> result = [];
for (int i = 0; i < count; i++) {
var discuss = widget.result.kgDiscussList[i];
var rng = new Random();
result.add(
Container(
child: Flex(
direction: Axis.vertical,
children: [
Container(
child: Row(
children: <Widget>[
Expanded(
child: Text.rich(
TextSpan(
style: TextStyle(
fontSize: 15,
color: Color(0xFF333333),
),
children: [
TextSpan(
text: ToolUtils.isEmptyOrNull(
discuss.discussPerson) +
'：',
style: TextStyle(
fontWeight: FontWeight.w500,
color: Color(0XFF4D6CAB),
),
),
TextSpan(
text: ToolUtils.isEmptyOrNull(
discuss.discussMessage)),
]),
textAlign: TextAlign.start,
),
),
],
),
),
Container(),
],
),
),
);
}
return result;
}
}关于Flutter中怎么实现一个微信朋友圈功能就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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