Android可以在5.0系統以上顯示橫幅通知，代碼如下：

private void showNotification() {NotificationManager notifyManager = (NotificationManager) mBleService.getSystemService(Context.NOTIFICATION_SERVICE);NotificationCompat.Builder builder = new NotificationCompat.Builder(mBleService);String appName = mBleService.getString(R.string.app_name);builder.setContentTitle(appName).setSmallIcon(R.drawable.app_icon).setContentText("通知內容");PendingIntent pIntent = PendingIntent.getActivity(mBleService, 1, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);builder.setContentIntent(pIntent);builder.setAutoCancel(true);if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {builder.setVisibility(Notification.VISIBILITY_PUBLIC);// 關聯PendingIntentbuilder.setFullScreenIntent(pIntent, false);}Notification notification = builder.build();notifyManager.notify(NOTIFICATION_ID, notification);}
然后在用戶設置-通知管理中開啟懸浮通知允許

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