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[英]Should WorkManager already be working when the app is killed, or does it need to have a foreground service attached? - Android Studio
[英]Android studio: cant recieve push messages on sdk < 26 when app is on foreground
我想让我的应用程序在前台查看推送通知。 它在我的模拟器上工作正常(在前台和后台接收),但是当推送到我的手机在前台时应用程序崩溃。 这是我的代码:
if (android.os.Build.VERSION.SDK_INT >= 26) {
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
channel.setDescription(CHANNEL_DESC);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)
.setSmallIcon(android.R.drawable.stat_notify_more)
.setContentTitle(remoteMessage.getNotification().getTitle())
.setContentText(remoteMessage.getNotification().getBody());
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.createNotificationChannel(channel);
manager.notify(1, builder.build());
}
我的手机有 android 7.1 版本,所以应用程序与 NotificationChannels 一致。 据我了解,NotificationChannels 不适用于旧版本的 android。 我想找到一种方法,如何为 sdk 版本 < 25 重写 NotificationCompat.Builder。如果我尝试用旧样式编写它,Android Studio 说该方法已被贬低。
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
使 NotificationCompat.Builder 在旧 sdk 版本上工作的正确方法是什么? 或者我怎样才能让我的应用程序在前台接收不支持 NotificationChannels 的 android 版本的消息?
您可以将new NotificationCompat.Builder(this, CHANNEL_ID)
用于任何 SDK 级别,但您需要为 SDK >= 26 的设备创建NotificationChannel
,如果 ZF20E36FAZ6 <2063FAB96D6 2063FAB96D,则无需创建NotificationChannel
试试这个代码
private void createNotification() {
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// only create notification channel if SDK >= 26
if (android.os.Build.VERSION.SDK_INT >= 26) {
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
channel.setDescription(CHANNEL_DESC);
manager.createNotificationChannel(channel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)
.setSmallIcon(android.R.drawable.stat_notify_more)
.setContentTitle(remoteMessage.getNotification().getTitle())
.setContentText(remoteMessage.getNotification().getBody());
manager.notify(1, builder.build());
}
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