短视频平台搭建，收到通知后弹出相关提示的弹窗

短视频平台搭建，收到通知后弹出相关提示的弹窗实现的相关代码

一.Flutter toast库配置,可参考fluttertoast配置引用

1.在pubspec.yaml中配置fluttertoast库，通过Pub get 获取fluttertoast的版本，通过Pub upgrade更新，eg:

<br> # The following adds the Cupertino Icons font to your application.<br>  # Use with the CupertinoIcons class for iOS style icons.<br>  cupertino_icons: ^1.0.2<br>  provider: ^5.0.0<br>  fluttertoast: ^8.0.8

2.在需要显示toast的dart文件中，import fluttertoast.dart,eg:

1	`<br>import` `'package:fluttertoast/fluttertoast.dart';`

3.fluttertoast.dart源码查看

<br>/// Summons the platform's showToast which will display the message<br>  ///<br>  /// Wraps the platform's native Toast for android.<br>  /// Wraps the Plugin https://github.com/scalessec/Toast for iOS<br>  /// Wraps the https://github.com/apvarun/toastify-js for Web<br>  ///<br>  /// Parameter [msg] is required and all remaining are optional<br>  static Future<bool?> showToast({<br>    required String msg,<br>    Toast? toastLength,<br>    int timeInSecForIosWeb = 1,<br>    double? fontSize,<br>    ToastGravity? gravity,<br>    Color? backgroundColor,<br>    Color? textColor,<br>    bool webShowClose = false,<br>    webBgColor: "linear-gradient(to right, #00b09b, #96c93d)",<br>    webPosition: "right",<br>  }) async {<br>    String toast = "short";<br>    if (toastLength == Toast.LENGTH_LONG) {<br>      toast = "long";<br>    }<br> <br>    String gravityToast = "bottom";<br>    if (gravity == ToastGravity.TOP) {<br>      gravityToast = "top";<br>    } else if (gravity == ToastGravity.CENTER) {<br>      gravityToast = "center";<br>    } else {<br>      gravityToast = "bottom";<br>    }<br> <br>//lines from 78 to 97 have been changed in order to solve issue #328<br>    if (backgroundColor == null) {<br>      backgroundColor = Colors.black;<br>    }<br>    if (textColor == null) {<br>      textColor = Colors.white;<br>    }<br>    final Map<String, dynamic> params = <String, dynamic>{<br>      'msg': msg,<br>      'length': toast,<br>      'time': timeInSecForIosWeb,<br>      'gravity': gravityToast,<br>      'bgcolor': backgroundColor != null ? backgroundColor.value : null,<br>      'iosBgcolor': backgroundColor != null ? backgroundColor.value : null,<br>      'textcolor': textColor != null ? textColor.value : null,<br>      'iosTextcolor': textColor != null ? textColor.value : null,<br>      'fontSize': fontSize,<br>      'webShowClose': webShowClose,<br>      'webBgColor': webBgColor,<br>      'webPosition': webPosition<br>    };<br> <br>    bool? res = await _channel.invokeMethod('showToast', params);<br>    return res;<br>  }<br>}

二.自定义fluttertoast

1.定义FToast字段,eg:

1	`<br>FToast fToast;`

2.初始化定义的FToast，eg:

<br>  @override<br>  void initState() {<br>    // TODO: implement initState<br>    super.initState();<br>    fToast=FToast();<br>    fToast.init(context);<br>  }

3.定义FToast显示的方法,包括内容,布局,和显示时长，eg:

<br>_showToast() {<br>    Widget toast = Container(<br>      padding: const EdgeInsets.symmetric(horizontal: 5.0, vertical: 5.0),<br>      alignment: Alignment.center,<br>      child: Row(<br>        mainAxisSize: MainAxisSize.min,<br>        children: const [<br>          SizedBox(<br>            width: 50.0,<br>          ),<br>          Text(<br>            "Dividend cannot be zero",<br>            textAlign: TextAlign.center,<br>            overflow: TextOverflow.ellipsis,<br>            style: TextStyle(<br>              color: Colors.black,<br>              backgroundColor: Colors.white,<br>              fontSize: 18,<br>            ),<br>          )<br>        ],<br>      ),<br>    );<br> <br> <br>    fToast.showToast(<br>      child: toast,<br>      gravity: ToastGravity.BOTTOM,<br>      toastDuration: const Duration(seconds: 1),<br>    );<br> <br>    // Custom Toast Position<br>    fToast.showToast(<br>        child: toast,<br>        toastDuration: const Duration(seconds: 3),<br>        positionedToastBuilder: (context, child) {<br>          return Positioned(<br>            child: child,<br>            top: 15.0,<br>            left: 15.0,<br>          );<br>        });<br>  }