如何在Flutter中安排通知？ [英] How do I schedule a notification in Flutter?

问题描述

我正在使用 flutter_local_notifications 包，并且正在尝试在Android设备中安排通知。 / p>

我使用此软件包成功创建了一个通知，但预定的通知似乎都不对我有用

我的AndroidManifest .xml如下所示：

 <清单xmlns：android = http://schemas.android.com/apk/ res / android 
 package = ...> 
< uses-permission android：name = android.permission.INTERNET /> 
< uses-permission android：name = android.permission.RECEIVE_BOOT_COMPLETED /> 
< uses-permission android：name = android.permission.VIBRATE /> 
 
< receiver android：name = com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver /> 
< receiver android：name = com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver> 
< intent-filter> 
< action android：name = android.intent.action.BOOT_COMPLETED>< / action> 
< / intent-filter> 
< / receiver> 
<应用程序
 android：name = io.flutter.app.FlutterApplication 
 android：label = notificaciones 
 android：icon = @ mipmap / ic_launcher> ; 
< activity 
 android：name =。MainActivity 
 android：launchMode = singleTop 
 android：theme = @ style / LaunchTheme 
 android： configChanges = orientation | keyboardHidden | keyboard | screenSize | locale | layoutDirection | fontScale | screenLayout | density 
 android：hardwareAccelerated = true 
 android：windowSoftInputMode = adjustResize> 
<元数据
 android：name = io.flutter.app.android.SplashScreenUntilFirstFrame 
 android：value = true /> 
< intent-filter> 
< action android：name = android.intent.action.MAIN /> 
< category android：name = android.intent.category.LAUNCHER /> 
< / intent-filter> 
< / activity> 
< / application> 
  

我添加了 android.enableAapt2 = false 到gradle.properties，原因是

AAPT：错误：未知元素<接收者>找到，如​​此线程所述，以避免构建错误

我的代码如下：

  import'package： flutter / material.dart'; 
 import‘package：flutter_local_notifications / flutter_local_notifications.dart’； 
 
 void main（）=> runApp（new MyApp（））; 
 
类MyApp扩展了StatelessWidget {
 @override 
 Widget build（BuildContext context）{
 return new MaterialApp（
 title：'Flutter Demo'，
主题：new ThemeData（
 primarySwatch：Colors.blue，
），
主页：new MyHomePage（），
）； 
} 
} 
 
类MyHomePage扩展了StatefulWidget {
 
 @override 
 _MyHomePageState createState（）=>新的_MyHomePageState（）; 
} 
 
类_MyHomePageState扩展State< MyHomePage> {
 FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin; 
 
 Future onSelectNotification（字符串有效载荷）{
 showDialog（
 context：context，
 builder：（_）=> AlertDialog（
 title：Text （ ALERT），
内容：Text（ CONTENT：$ payload），
））; 
} 
 
 showNotification（）异步{
 var android = AndroidNotificationDetails（
频道ID，频道名称，频道说明）; 
 var iOS = IOSNotificationDetails（）; 
 var platform = NotificationDetails（android，iOS）; 
 varcheduleNotificationDateTime = 
 new DateTime.now（）。add（Duration（seconds：10））; 
等待flutterLocalNotificationsPlugin.schedule（0， Title， Body，cheduledNotificationDateTime，平台）； 
} 
 
 @override 
 void initState（）{
 super.initState（）; 
 flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin（）; 
 var android = AndroidInitializationSettings（’@ mipmap / ic_launcher’）; 
 var iOS = IOSInitializationSettings（）; 
 var initSettings = InitializationSettings（android，iOS）; 
 flutterLocalNotificationsPlugin.initialize（initSettings，
 selectNotification：onSelectNotification）; 
} 
 
 @override 
小部件构建（BuildContext上下文）{
 return new Scaffold（
 appBar：new AppBar（
 title：new Text（ Demo），
），
正文：new Center（
子项：new Column（
 mainAxisAlignment：MainAxisAlignment.center，
子项：< Widget> ; []，
），
），
 floatActionButton：new FloatingActionButton（
 onPressed：showNotification，
 child：new Icon（Icons.notifications），
），
）; 
} 
} 
  

解决方案

谢谢到@pskink，我意识到我应该将AndroidManifest.xml的接收者放在application标签内。

因此，最终的AndroidManifest.xml如下所示：

 <清单xmlns：android = http://schemas.android.com/apk/res/android 
 package = ...> 
< uses-permission android：name = android.permission.INTERNET /> 
< uses-permission android：name = android.permission.RECEIVE_BOOT_COMPLETED /> 
< uses-permission android：name = android.permission.VIBRATE /> 
<应用程序
 android：name = io.flutter.app.FlutterApplication 
 android：label = notificaciones 
 android：icon = @ mipmap / ic_launcher> ; 
< receiver android：name = com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver /> 
< receiver android：name = com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver> 
< intent-filter> 
< action android：name = android.intent.action.BOOT_COMPLETED>< / action> 
< / intent-filter> 
< / receiver> 
< activity 
 android：name =。MainActivity 
 android：launchMode = singleTop 
 android：theme = @ style / LaunchTheme 
 android： configChanges = orientation | keyboardHidden | keyboard | screenSize | locale | layoutDirection | fontScale | screenLayout | density 
 android：hardwareAccelerated = true 
 android：windowSoftInputMode = adjustResize> 
<元数据
 android：name = io.flutter.app.android.SplashScreenUntilFirstFrame 
 android：value = true /> 
< intent-filter> 
< action android：name = android.intent.action.MAIN /> 
< category android：name = android.intent.category.LAUNCHER /> 
< / intent-filter> 
< / activity> 
< / application> 
  

和<$ c $ gradle.properties中的c> android.enableAapt2 = false 不再需要。
其余代码保持不变。

Im using the flutter_local_notifications package and im trying to schedule a notification in my Android device.

I successfully created a notification using this package but neither of the scheduled ones seems to work for me

My AndroidManifest.xml looks like this:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="...">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.VIBRATE" />

<receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" />
<receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED"></action>
    </intent-filter>
</receiver>
<application
    android:name="io.flutter.app.FlutterApplication"
    android:label="notificaciones"
    android:icon="@mipmap/ic_launcher">
    <activity
        android:name=".MainActivity"
        android:launchMode="singleTop"
        android:theme="@style/LaunchTheme"
        android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
        android:hardwareAccelerated="true"
        android:windowSoftInputMode="adjustResize">
        <meta-data
            android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
            android:value="true" />
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>
</application>

I added android.enableAapt2=false to the gradle.properties due to

AAPT: error: unknown element <receiver> found as mentioned in this thread to avoid a build error.

My code looks like this:

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {

  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;

  Future onSelectNotification(String payload) {
    showDialog(
        context: context,
        builder: (_) => AlertDialog(
              title: Text("ALERT"),
              content: Text("CONTENT: $payload"),
            ));
  }

  showNotification() async {
    var android = AndroidNotificationDetails(
        'channel id', 'channel name', 'channel description');
    var iOS = IOSNotificationDetails();
    var platform = NotificationDetails(android, iOS);
    var scheduledNotificationDateTime =
        new DateTime.now().add(Duration(seconds: 10));
    await flutterLocalNotificationsPlugin.schedule(0, 'Title ', 'Body', scheduledNotificationDateTime, platform);
  }

  @override
  void initState() {
    super.initState();
    flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
    var android = AndroidInitializationSettings('@mipmap/ic_launcher');
    var iOS = IOSInitializationSettings();
    var initSettings = InitializationSettings(android, iOS);
    flutterLocalNotificationsPlugin.initialize(initSettings,
        selectNotification: onSelectNotification);
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text("Demo"),
      ),
      body: new Center(
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[],
        ),
      ),
      floatingActionButton: new FloatingActionButton(
        onPressed: showNotification,
        child: new Icon(Icons.notifications),
      ),
    );
  }
}

解决方案

Thanks to @pskink , I realized that I am supposed to put the receiver of the AndroidManifest.xml inside the application tag.

So the final AndroidManifest.xml stands like this:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="...">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.VIBRATE" />
<application
    android:name="io.flutter.app.FlutterApplication"
    android:label="notificaciones"
    android:icon="@mipmap/ic_launcher">
    <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" />
    <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"></action>
        </intent-filter>
    </receiver>
    <activity
        android:name=".MainActivity"
        android:launchMode="singleTop"
        android:theme="@style/LaunchTheme"
        android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
        android:hardwareAccelerated="true"
        android:windowSoftInputMode="adjustResize">
        <meta-data
            android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
            android:value="true" />
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>
</application>

and theandroid.enableAapt2=false in the gradle.properties is not needed anymore. The rest of the code stays as it is.

这篇关于如何在Flutter中安排通知？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！