app直播源码，收到消息时出现弹窗

app直播源码，收到消息时出现弹窗实现的相关代码

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:

 

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

​

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

 

import 'package:fluttertoast/fluttertoast.dart';

 

3.fluttertoast.dart源码查看

 

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

 

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