问题从Flutter App发布Whatsapp

Question

我正在创建一个应用程序，我需要启动Whatsapp。我尝试了这里描述的内容：qazxsw poi和我在我的项目中粘贴了相同的代码。这是问题所在：

pub.dartlang.org/packages/flutter_launch

这是我的代码：

What went wrong:
The Android Gradle plugin supports only Kotlin Gradle plugin version 1.2.51 and higher. Project 'flutter_launch' is using version 1.1.51.
Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
Get more help at https://help.gradle.org

Answer 1

Android Gradle插件仅支持Kotlin Gradle插件版本1.2.51及更高版本。项目'flutter_launch'正在使用1.1.51版。

如果您正在关注此

import 'package:flutter/material.dart';
import 'package:flutter_launch/flutter_launch.dart';

void main() => runApp(new MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {

  @override
  initState() {
    super.initState();
  }

  void whatsAppOpen() async {
    await FlutterLaunch.launchWathsApp(phone: "3381559137", message: "Hello");
  }

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text('Plugin example app'),
        ),
        body: new Center(
          child: FlatButton(
            child: Text("Open WhatsApp"),
            onPressed: () {
              whatsAppOpen();
            },
          )
        ),
      ),
    );
  }
}

，问题就解决了，改变了这个：

example

对此：

buildscript {
    ext.kotlin_version = '1.1.51'
    repositories {
        google()

在

buildscript {
    ext.kotlin_version = '1.2.51'
    repositories {
        google()

文件中

编辑

你可以查看这个build.gradle有一个问题，他们必须重建插件。一个人建议使用旧版本

thread

使用这个

var whatsappUrl ="whatsapp://send?phone=${_numberController.text}&text=${_textController.text}";
    await canLaunch(whatsappUrl)? launch(whatsappUrl):print("open whatsapp app link or do a snackbar with notification that there is no whatsapp installed");

而不是url_launcher

flutter_launch

试一试，否则你可以看看如何从库中排除版本并使用你的版本，就像这个人一样，但我没有测试过它

url_launcher: 4.0.0 in pubspec.yml

import 'package:url_launcher/url_launcher.dart';