文档说明如下:
通知的大视图仅在通知被展开时显示,这发生在通知位于通知抽屉的顶部,或者当用户使用手势展开通知时。
所以我的答案是不能默认展开它。
然而,有一个技巧可以将通知推到列表的顶部并展开。只需将优先级设置为Notification.PRIORITY_MAX
,你的应用程序通知很可能会出现在顶部。
Notification noti = new Notification.Builder()
... // The same notification properties as the others
.setStyle(new Notification.BigPictureStyle().bigPicture(mBitmap))
.build();
你改变
.setStyle(new NotificationCompat.BigTextStyle().bigText(th_alert))
随着宣布一起
notification = new NotificationCompat.Builder(context)
这里是一个例子:
Intent intent = new Intent(context, ReserveStatusActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
NotificationManager notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
intent = new Intent(String.valueOf(PushActivity.class));
intent.putExtra("message", MESSAGE);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addParentStack(PushActivity.class);
stackBuilder.addNextIntent(intent);
// PendingIntent pendingIntent =
stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
// android.support.v4.app.NotificationCompat.BigTextStyle bigStyle = new NotificationCompat.BigTextStyle();
// bigStyle.bigText((CharSequence) context);
notification = new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(th_title)
.setContentText(th_alert)
.setAutoCancel(true)
// .setStyle(new Notification.BigTextStyle().bigText(th_alert) ตัวเก่า
// .setStyle(new NotificationCompat.BigTextStyle().bigText(th_title))
.setStyle(new NotificationCompat.BigTextStyle().bigText(th_alert))
.setContentIntent(pendingIntent)
.setNumber(++numMessages)
.build();
notification.sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
notificationManager.notify(1000, notification);
notificationBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText("Your Long Text here"))
setStyle
。从这个通知代码中,您可以获取图像、大文本或更多内容。
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mBuilder.setSmallIcon(R.drawable.small_logo);
mBuilder.setColor(Color.parseColor("#D74F4F"));
} else {
mBuilder.setSmallIcon(icon);
}
mBuilder.setTicker(title).setWhen(when);
mBuilder.setAutoCancel(true);
mBuilder.setContentTitle(title);
mBuilder.setContentIntent(intent);
mBuilder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));
mBuilder.setLargeIcon(BitmapFactory.decodeResource(context.getResources(), icon));
mBuilder.setContentText(msg);
mBuilder.setPriority(Notification.PRIORITY_MAX);
if (Utils.validateString(banner_path)) {
mBuilder.setStyle(notiStyle);
} else {
mBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(msg));
}
Notification noti = mBuilder.build();
notificationManager.notify(0, noti);