我正在使用flutter_local_notifications包，并尝试在我的Android设备上安排通知。
我成功地使用这个包创建了一个通知，但是我的预定通知似乎都不起作用。
我的AndroidManifest.xml文件如下：
<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>
由于出现了 AAPT: error: unknown element <receiver> found 的错误，我将 android.enableAapt2=false 添加到 gradle.properties 中，如 这个帖子 中提到的那样，以避免构建错误。
我的代码看起来像这样：
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),
),
);
}
}