前言
我正在尝试在通知栏中添加一个计时器,这个计时器是一个服务。每秒钟会调用一次下面这行代码(continueThread是一个表示是否运行中的布尔值,timeString是显示时间的字符串):
NotificationChrono.updateNotification(getApplicationContext(), continueThread,
NOTIF_ID, timeString, "Chronometer", notificationManager);
这是 NotificationChrono 类:
public class NotificationChrono {
static public void updateNotification(Context context, boolean running,
int id, String title, String text,
NotificationManager notificationManager) {
Intent stopIntent = new Intent("com.corsalini.david.barcalc.STOP");
PendingIntent stopPendingIntent = PendingIntent.getBroadcast(context,
0, stopIntent, 0);
Intent startIntent = new Intent(
"com.corsalini.david.barcalc.STARTPAUSE");
PendingIntent startPendingIntent = PendingIntent.getBroadcast(context,
0, startIntent, 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(
context)
.setContentText(context.getString(R.string.notif_text))
.setContentTitle(title)
.setSmallIcon(R.drawable.ic_action_alarm_2)
.setAutoCancel(false)
.setOngoing(running)
.setOnlyAlertOnce(true)
.setContentIntent(
PendingIntent.getActivity(context, 10, new Intent(
context, FrontActivity.class)
.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP), 0))
.addAction(
running ? R.drawable.ic_action_pause
: R.drawable.ic_action_play,
running ? context.getString(R.string.pause) : context
.getString(R.string.start), startPendingIntent)
.addAction(R.drawable.ic_action_stop,
context.getString(R.string.stop), stopPendingIntent);
notificationManager.notify(id, builder.build());
}
}
问题
每秒钟通知都被删除并重新创建,视觉上意味着每秒钟通知会在通知列表中消失并重新出现。
我希望只更新标题文本,而不是每秒重新创建整个通知。这可能吗?