我正在尝试显示正在进行的通知而没有初始的自动收报机文本显示。通过在构造函数中将ticker text设置为null,我能够使用旧样式通知:
mNotification = new Notification(R.drawable.ic_stat_playing, null, System.currentTimeMillis());
但是,我注意到现在不推荐以这种方式实例化通知,而是建议使用Notification.Builder。但是,即使我将滚动条文本设置为null,我也无法在没有滚动条文本的情况下显示通知:
Notification.Builder builder = new Notification.Builder(this);
CharSequence contentText = "contentText here";
Intent launchIntent = new Intent(this, MainActivity.class);
// The PendingIntent to launch our activity if the user selects this
// notification
PendingIntent contentIntent = PendingIntent.getActivity(this, -1,
launchIntent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIntent)
.setSmallIcon(R.drawable.ic_stat_playing)
.setLargeIcon(null)
.setTicker(null)
.setOnlyAlertOnce(true)
.setWhen(System.currentTimeMillis())
.setContentTitle(contentTitle)
.setOngoing(true)
.setContentText(contentText);
mNotification = builder.getNotification();
startForeground(NOTIFICATION_ID, mNotification);
是否无法使用新的Notification.Builder关闭自动收报机显示屏?是这样,这很不幸,因为我无法从弃用的代码中更新。
编辑 - 最终有效的代码:
mNotification = builder.getNotification();
mNotification.tickerView = null;
startForeground(NOTIFICATION_ID, mNotification);
答案 0 :(得分:3)
您根本不需要包含.setTicker
,只需将其留下:
builder.setContentIntent(contentIntent)
.setSmallIcon(R.drawable.ic_stat_playing)
.setLargeIcon(null)
.setOnlyAlertOnce(true)
.setWhen(System.currentTimeMillis())
.setContentTitle(contentTitle)
.setOngoing(true)
.setContentText(contentText);
答案 1 :(得分:2)
尝试在构建器之后将tickerView设置为null。这对我来说很好 代码如:
Notification notif = builder.build();
notif.tickerView = null;
mNotificationManager.notify(id, notif);