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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:fluttertoast/fluttertoast.dart';
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import 'dart:convert';
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//import 'messages_data.dart';
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import '../../../components/doJSON.dart';
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import '../../../components/hyxx_data_handle.dart';
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class listMessagesData {
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List listMessages = [];
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int listIndex = 0;
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}
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class MessagesView extends StatefulWidget {
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//MessagesView({Key key, this.title, this.mapData}) : super(key: key);
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MessagesView({
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@required this.title,
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this.listIndex,
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Key key,
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}) : super(key: key);
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String title;
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int listIndex = 0;
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List listMessages;
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Map<String, listMessagesData> mapListMessagesData;
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_LoginPageState createState() => _LoginPageState();
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}
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class _LoginPageState extends State<MessagesView> {
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@override
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void initState() {
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// TODO: implement initState
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super.initState();
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setInit();
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}
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String strContent = '';
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setInit() async {
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widget.mapListMessagesData = Map();
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widget.mapListMessagesData['收到的消息'] = listMessagesData();
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widget.mapListMessagesData['发送的消息'] = listMessagesData();
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widget.mapListMessagesData['收到的消息'].listMessages = listMessagesInbox2;
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widget.mapListMessagesData['发送的消息'].listMessages = listMessagesOutbox2;
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selectValue = widget.title;
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switch (selectValue) {
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case '收到的消息':
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//第一次调用时widget.listIndex是由外面传入的，不能覆盖widget.listIndex，
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// 所以单独抽离出一个不会覆盖widget.listIndex的函数
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onRadioBtnInboxSet();
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break;
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case '发送的消息':
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onRadioBtnOutboxSet();
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break;
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}
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widget.listMessages = widget.mapListMessagesData[selectValue].listMessages;
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getContent();
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}
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getPreBtn_NextBtn() {
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preBtn = getBtnSizeX(
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text: "上一条",
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onPressedFun: null,
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);
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nextBtn = getBtnSizeX(
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text: "下一条",
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onPressedFun: null,
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);
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if (widget.listIndex > 0 && widget.listMessages.length > 0) {
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preBtn = getBtnSizeX(
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text: "上一条",
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onPressedFun: () async {
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if (widget.listIndex > 0) {
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widget.listIndex--;
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getContent();
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}
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},
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);
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}
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if (widget.listIndex < (widget.listMessages.length - 1) && widget.listMessages.length > 0) {
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nextBtn = getBtnSizeX(
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text: "下一条",
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onPressedFun: () async {
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if (widget.listIndex < widget.listMessages.length - 1) {
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widget.listIndex++;
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getContent();
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}
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},
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);
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}
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}
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getContent() async {
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if (widget.listMessages.isEmpty) {
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strContent = '';
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widget.mapListMessagesData[selectValue].listIndex = widget.listIndex = 0;
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} else {
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widget.mapListMessagesData[selectValue].listIndex = widget.listIndex;
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strContent = "第 ${widget.listIndex + 1} 条（共 ${widget.listMessages.length} 条）" +
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"\n" +
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"时间：" +
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widget.listMessages[widget.listIndex]['date'] +
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", " +
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widget.listMessages[widget.listIndex]['time'] +
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"\n\n" +
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"内容：" +
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widget.listMessages[widget.listIndex]['content'];
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}
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getPreBtn_NextBtn();
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setState(() {});
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}
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var selectValue;
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//解决第一次进入报错问题。因为getPreBtn_NextBtn()还未执行，preBtn和nextBtn为空
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Widget preBtn = Container(
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color: Colors.white12, //onPressedFun为null时无效
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width: 70.0,
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height: 35.0,
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child: RaisedButton(
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padding: EdgeInsets.all(0),
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textColor: Colors.black,
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child: Text('上一条'),
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onPressed: null,
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),
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);
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Widget nextBtn = Container(
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color: Colors.white12, //onPressedFun为null时无效
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width: 70.0,
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height: 35.0,
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child: RaisedButton(
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padding: EdgeInsets.all(0),
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textColor: Colors.black,
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child: Text('下一条'),
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onPressed: null,
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),
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);
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Widget getBtnSizeColor(
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{@required title,
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width = 70.0,
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height = 35.0,
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//colorBK = Colors.white12,
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txtColor = Colors.black,
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fontSize = 16.0,
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bottomBorder = false,
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onPressedFun}) {
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return Container(
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//Failed assertion: line 285 pos 15: 'color == null || decoration == null':
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// Cannot provide both a color and a decoration
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//color: colorBK, //onPressedFun为null时无效
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width: width,
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height: height,
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decoration: BoxDecoration(
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border: bottomBorder ? Border(bottom: BorderSide(width: 1, color: Colors.blue)) : null,
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),
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child: FlatButton(
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padding: EdgeInsets.all(0),
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textColor: txtColor,
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child: Text(title, style: TextStyle(fontSize: fontSize)),
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onPressed: onPressedFun,
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),
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);
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}
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Widget radioBtnInbox;
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Widget radioBtnOutbox;
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//第一次调用时widget.listIndex是由外面传入的，不能覆盖widget.listIndex，
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// 所以单独抽离出一个不会覆盖widget.listIndex的函数
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onRadioBtnInboxSet() {
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radioBtnInbox = getBtnSizeColor(
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title: '收到的消息',
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width: 100.0,
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onPressedFun: onRadioBtnInbox,
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//colorBK: Colors.white,
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txtColor: Colors.blue,
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bottomBorder: true);
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radioBtnOutbox = getBtnSizeColor(
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title: '发送的消息', width: 100.0, onPressedFun: onRadioBtnOutbox, txtColor: Colors.black38);
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}
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onRadioBtnInbox() {
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setState(() {
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selectValue = '收到的消息';
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onRadioBtnInboxSet();
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widget.listMessages = widget.mapListMessagesData[selectValue].listMessages;
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widget.listIndex = widget.mapListMessagesData[selectValue].listIndex;
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getContent();
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});
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}
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onRadioBtnOutboxSet() {
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radioBtnInbox = getBtnSizeColor(
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title: '收到的消息', width: 100.0, onPressedFun: onRadioBtnInbox, txtColor: Colors.black38);
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radioBtnOutbox = getBtnSizeColor(
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title: '发送的消息',
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width: 100.0,
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onPressedFun: onRadioBtnOutbox,
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//colorBK: Colors.white,
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txtColor: Colors.blue,
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bottomBorder: true);
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}
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onRadioBtnOutbox() {
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setState(() {
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selectValue = '发送的消息';
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onRadioBtnOutboxSet();
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widget.listMessages = widget.mapListMessagesData[selectValue].listMessages;
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widget.listIndex = widget.mapListMessagesData[selectValue].listIndex;
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getContent();
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});
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}
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Future<bool> alertDialog(String title, String content, var onPresse) async {
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return await showDialog(
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barrierDismissible: false, //表示点击灰色背景的时候是否消失弹出框
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context: context,
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builder: (context) {
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return AlertDialog(
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title: Text(title),
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content: Text(content),
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actions: <Widget>[
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FlatButton(
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child: Text("确定"),
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onPressed: onPresse,
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),
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FlatButton(
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child: Text("取消"),
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onPressed: () {
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Navigator.pop(context, false);
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},
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),
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],
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);
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},
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);
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}
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@override
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Widget build(BuildContext context) {
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Size mediaSize = MediaQuery.of(context).size;
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return Scaffold(
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appBar: AppBar(
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leading: IconButton(
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icon: const Icon(Icons.arrow_back),
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onPressed: () {
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//SystemNavigator.pop(); //退出App
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Navigator.pop(context); //返回
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},
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),
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centerTitle: true,
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elevation: 0,
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backgroundColor: Colors.white,
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title: Center(
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly, // 主轴元素的排序方式（水平布局中，X轴是主轴）
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crossAxisAlignment: CrossAxisAlignment.end, // 次轴元素的排序方式
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children: <Widget>[
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radioBtnInbox,
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radioBtnOutbox,
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],
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),
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),
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actions: [
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IconButton(
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icon: Icon(Icons.close),
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onPressed: () async {
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Navigator.pop(context); //关闭弹框，播放输入视频地址
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},
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),
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SizedBox(
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width: 10,
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),
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],
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),
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body: Container(
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alignment: Alignment(0, 0),
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child: Container(
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child: Column(
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children: <Widget>[
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Container(
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padding: EdgeInsets.fromLTRB(20, 10, 20, 10),
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width: double.infinity,
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height: mediaSize.height * 0.75,
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child: SingleChildScrollView(
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child: Container(
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child: Text(strContent),
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),
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),
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),
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Divider(
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color: Colors.blue,
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),
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SizedBox(
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height: 6,
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),
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: <Widget>[
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getBtnSizeX(
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text: "复制",
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onPressedFun: () {
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// Flutter 复制文本到剪贴板
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Clipboard.setData(ClipboardData(
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text: ' ' +
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selectValue +
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'\n\n' +
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widget.listMessages[widget.listIndex]['content']));
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//showToast('帮助信息已复制到剪贴板', textAlign: TextAlign.left);
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Fluttertoast.showToast(msg: '帮助信息已复制到剪贴板', gravity: ToastGravity.CENTER);
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//Navigator.pop(context, ret);
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}),
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getBtnSizeX(
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text: "删除",
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onPressedFun: () async {
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//Navigator.pop(context); //关闭弹框，播放输入视频地址
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bool ret = await alertDialog('删除确认', '是否确定要删除当前项目？', () {
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if (0 == selectValue.compareTo('收到的消息')) {
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listMessagesInbox2.removeAt(widget.listIndex);
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widget.mapListMessagesData['收到的消息'].listMessages = listMessagesInbox2;
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writeJSON(json.encode(listMessagesInbox2), 'listMessagesInbox02.json');
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} else if (0 == selectValue.compareTo('发送的消息')) {
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listMessagesOutbox2.removeAt(widget.listIndex);
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widget.mapListMessagesData['发送的消息'].listMessages = listMessagesOutbox2;
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writeJSON(
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json.encode(listMessagesOutbox2), 'listMessagesOutbox02.json');
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}
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if (widget.listIndex > 0) {
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widget.listIndex--;
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}
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widget.listMessages =
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widget.mapListMessagesData[selectValue].listMessages;
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getContent();
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Navigator.pop(context);
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});
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}),
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preBtn,
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nextBtn,
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],
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),
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],
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),
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),
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),
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);
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}
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Widget getBtnSizeX({@required text, width = 70.0, height = 35.0, onPressedFun}) {
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return Container(
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color: Colors.white12, //onPressedFun为null时无效
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width: width,
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height: height,
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child: RaisedButton(
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padding: EdgeInsets.all(0),
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textColor: Colors.black,
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child: Text(text),
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onPressed: onPressedFun,
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),
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);
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}
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}
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