在Android API 24(Android 7.0 Nougat)中,通知的行为发生了一些变化,特别是在通知的堆叠和分组方面。以下是一些关键点和如何处理未堆叠通知的指南:
从API 26(Android 8.0 Oreo)开始,通知渠道成为强制性的。但在API 24中,虽然不是强制性的,但建议使用通知渠道来更好地管理通知。
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel("channel_id", "Channel Name", NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
}
在API 24中,创建通知的方式与之前的版本类似,但需要注意一些新的行为和属性。
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
.setSmallIcon(R.drawable.ic_notification)
.setContentTitle("Title")
.setContentText("Content")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(notificationId, builder.build());
在API 24中,默认情况下,相同应用的通知会被堆叠在一起。如果你希望某些通知不堆叠,可以考虑以下方法:
为不同的通知类型创建不同的通知渠道,这样可以避免它们被堆叠在一起。
NotificationChannel channel1 = new NotificationChannel("channel_id_1", "Channel 1", NotificationManager.IMPORTANCE_DEFAULT);
NotificationChannel channel2 = new NotificationChannel("channel_id_2", "Channel 2", NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel1);
notificationManager.createNotificationChannel(channel2);
然后为每个通知使用不同的渠道ID:
NotificationCompat.Builder builder1 = new NotificationCompat.Builder(this, "channel_id_1");
NotificationCompat.Builder builder2 = new NotificationCompat.Builder(this, "channel_id_2");
setGroupSummary
如果你有多个相关通知,并且希望它们作为一个组显示,可以使用 setGroupSummary
方法。
NotificationCompat.Builder builder1 = new NotificationCompat.Builder(this, "channel_id")
.setSmallIcon(R.drawable.ic_notification)
.setContentTitle("Title 1")
.setContentText("Content 1")
.setGroup("group_key");
NotificationCompat.Builder builder2 = new NotificationCompat.Builder(this, "channel_id")
.setSmallIcon(R.drawable.ic_notification)
.setContentTitle("Title 2")
.setContentText("Content 2")
.setGroup("group_key")
.setGroupSummary(true);
以下是一个完整的示例,展示了如何在API 24中创建和管理通知:
public void showNotification() {
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel("channel_id", "Channel Name", NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
.setSmallIcon(R.drawable.ic_notification)
.setContentTitle("Title")
.setContentText("Content")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
notificationManager.notify(notificationId, builder.build());
}
通过以上方法,你可以在Android API 24中有效地管理和控制通知的堆叠行为。
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