Android单挑通知未显示

>确保正确配置了通知.见：https://developer.android.com/guide/topics/ui/notifiers/notifications#Heads-up@H_403_7@>并确保手机配置正确(我认为这是大部分卡住的地方).

像这样注册您的通知渠道

if (Build.VERSION.SDK_INT >= Build.VERSION_CODEs.O) {
        String name = getString(R.String.chAnnel_Name);
        String description = getString(R.String.chAnnel_description);
        int importance = notificationmanager.IMPORTANCE_HIGH; //Important for heads-up notification
        NotificationChAnnel chAnnel = new NotificationChAnnel("1",name,importancE);
        chAnnel.setDescription(description);
        chAnnel.setShowBadge(true);
        chAnnel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
        notificationmanager notificationmanager = getSystemservice(notificationmanager.class);
        notificationmanager.createNotificationChAnnel(chAnnel);
    }

然后,创建一个通知,如下所示：

NotificationCompat.builder mBuilder = new NotificationCompat.builder(this,"1")
        .setsmallIcon(R.drawable.notification_icon)
        .setContenttitle(texttitlE)
        .setContentText(textContent)
        .setDefaults(DEFAULT_SOUND | DEFAULT_VIBRATE) //Important for heads-up notification
        .setPriority(Notification.PRIORITY_MAX); //Important for heads-up notification

最后,像通常那样发送通知,例如：

Notification buildNotification = mBuilder.build();
notificationmanager mNotifymgr = (notificationmanager) context.getSystemservice(NOTIFICATION_serviCE);
mNotifymgr.notify(001,buildNotification);

我注意到我必须在手机上启用一些额外的设置(小米Note 3)：

以下是一些访问菜单的方法：

>长按通知栏中的通知.@H_403_7@>转到：设置>已安装的应用>选择你的应用>通知@H_403_7@>改进上一步,您可以通过使用此意图将用户发送到已安装的应用程序菜单,从而帮助用户：

startActivity(new Intent(SetTings.ACTION_MANAGE_APPLICATIONS_SETTinGS));

最后,当您到达此菜单时,启用称为“浮动通知”的设置(此设置的名称因设备而异).