android - 使用 cordova 在 Android/Ios 中显示角标(Badge)编号
<p><p>我正在使用 cordova 开发一个混合应用程序。我想在收到来自 APNS/FCM 的通知后，在应用程序图标中显示通知计数，如下图所示。我正在使用 cordova-plugin-fcm 和 cordova-plugin-badge 插件。</p>
<p>代码:</p>
<pre><code>onDeviceReady: function() {
cordova.plugins.notification.badge.hasPermission(function (granted) {
});
cordova.plugins.notification.badge.registerPermission(function (hasPermission) {
});
// switch on 'auto clear'
cordova.plugins.notification.badge.configure({
autoClear: true
});
//FCMPlugin.getToken( successCallback(token), errorCallback(err) );
//Keep in mind the function will return null if the token has not been established yet.
FCMPlugin.getToken(
function(token){
console.log("token "+token);
},
function(err){
console.log('error retrieving token: ' + err);
}
)
//FCMPlugin.subscribeToTopic( topic, successCallback(msg), errorCallback(err) );
//All devices are subscribed automatically to 'all' and 'ios' or 'android' topic respectively.
//Must match the following regular expression: "{1,900}".
FCMPlugin.subscribeToTopic('all');
//FCMPlugin.onNotification( onNotificationCallback(data), successCallback(msg), errorCallback(err) )
//Here you define your application behaviour based on the notification data.
FCMPlugin.onNotification(
function(data){
//increase the badge
cordova.plugins.notification.badge.increase();
if(data.wasTapped){
//Notification was received on device tray and tapped by the user.
}else{
//Notification was received in foreground. Maybe the user needs to be notified.
}
},
function(msg){
console.log('onNotification callback successfully registered: ' + msg);
},
function(err){
console.log('Error registering onNotification callback: ' + err);
}
);}
</code></pre>
<p> <a href="/image/jwfk2.png" rel="noreferrer noopener nofollow">Image with badge !!</a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>解决方案是发送 2 条不同的 FCM 消息。</p>
<p>第一个没有通知，负载如下:</p>
<pre><code>{
"data":{
"badge":"true",
},
"to":"/topics/all",
"priority":"high"
}
</code></pre>
<p>这将触发 MyFirebaseMessagingService.java 中的 onMessageReceived，然后将负载推送到 FCMPlugin.onNotification() 回调。</p>
<pre><code>FCMPlugin.onNotification(function(data){
if(data.badge == "true"){
cordova.plugins.notification.badge.increase();
}
});
</code></pre>
<p>通过这样做，您将增加角标(Badge)数量。
然后，您使用这样的有效负载发送通知:</p>
<pre><code>{
"notification":{
"title":"Notification title",
"body":"Notification body",
"sound":"default",
"click_action":"FCM_PLUGIN_ACTIVITY",
"icon":"fcm_push_icon"
},
"to":"/topics/all",
"priority":"high"
}
</code></pre>
<p>这样您将在通知托盘中收到消息。我还建议设置 <code>cordova.plugins.notification.badge.set(0)</code> onDeviceReady 和 onResume 事件，以便在应用程序进入前台后清除角标(Badge)编号。</p></p>
<p style="font-size: 20px;">关于android - 使用 cordova 在 Android/Ios 中显示角标(Badge)编号，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/40112391/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/40112391/
</a>
</p>
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