Website design: display a selection of subcategories within a card

I am working on an application that analyzes live video and can tell, with the help of AI, when an object of a certain type (eg, human, vehicle) is detected in the video.

The application will have a wizard for users to start. And it looks like this:

enter the description of the image here

However, the project manager now wants the application to allow subcategories to the Vehicles category, such as Cars, Trucks, Bicycles, Buses, etc. How can I better convey to users that the Vehicles category has subcategories and that they can select one or more of these subcategories?

Simply adding more cards to the list feels bad since hierarchically these are "under" vehicles. I also want to keep all this in "Step 2".

I have been experimenting for 2 days and have tried to flip, expand or transform the card to reveal these options, but nothing "clicked". I am mentally drained of ideas.

General feedback from UI / UX is also welcome.

Download to SD card

I put a 32GB SD card in my Nokia 2.2 yesterday and I've been wondering how to make my downloads from the Google Play store go directly to my SD card, not internal storage. Because when I try to download an application for 1.6gb it goes to my internal storage that does not have enough space, but my SD card has enough space and I have wondered how to change it from the download to the internal storage to external SD card

public transport – Stockholm 24 hours travel in the SL application on the phone – access card?

You don't need a physical access card when using mobile tickets, that's why we have them.

You can have multiple tickets on the same phone.

I don't know how mobile tickets work when several people use the same phone, but you can try the automatic doors, and if only one of you passes, there is no problem to leave and then go to the manned kiosk.

Scanners for mobile tickets are not everywhere, so you will still have to show people tickets.

Bus scanner for mobile phone tickets

Automatic door

Installation: automatic installation of an APK file after saving it to the SD card of the laptop

Is there any way to install an APK file on Android that was placed on the SD card from the laptop?

For example: I accessed the storage of my phone on my laptop through a cable connector and saved the APK. When I disconnected the cable connector, I want the apk to install it automatically on my Android phone. It's possible?

applications – I want to make a Music Player that extracts the music stored on the sd card

I charge the music through this method
 public void getSongList () {
        ContentResolver musicResolver = getContentResolver ();
        Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
        Cursor musicCursor = musicResolver.query (musicUri, null, null, null, null);
        if (musicCursor! = null && musicCursor.moveToFirst ()) {
            int titlecolumn = musicCursor.getColumnIndex (MediaStore.Audio.Media.TITLE);
            int idcolumn = musicCursor.getColumnIndex (MediaStore.Audio.Media._ID);
            int artiscolumn = musicCursor.getColumnIndex (MediaStore.Audio.Media.ARTIST);

        do {
            long thisid = musicCursor.getLong(idcolumn);
            String thistitle = musicCursor.getString(titlecolumn);
            String thisartis = musicCursor.getString(artiscolumn);
            listaarray.add(new Musicas(thisid, thistitle, thisartis));

        while (musicCursor.moveToNext());

then this method that returns the loaded list and I adapt it to this adapter

final Adapter adapter = new Adapter (this, listaarray);
        listamusica.setAdapter (adapter);

// and then call SetOnItemClickListener and be able to play the music I select but it doesn't work for me.

listamusica.setOnItemClickListener (new AdapterView.OnItemClickListener () {
            public void onItemClick (AdapterView adapterView, View view, int position, long pos) {
                MediaPlayer mediaPlayer = new MediaPlayer ();
                Toast to = Toast.makeText (Main2Activity.this, "You have pressed the position:" + position, Toast.LENGTH_LONG);

            Uri contentUri = ContentUris.withAppendedId(android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,pos);

            try {
                mediaPlayer.setDataSource(getApplicationContext(), contentUri);

            } catch (IOException e) {


Please someone to help me I want to learn to program in Android Studio
I am a student of Programming Excuse Any Error.
-Robinson. I am working with a 6.0.1 Device

graphics card: the GPU does not show / does not work after a power outage

So I had a brief power outage, which caused my PC to shut down quickly and then turn on again, the problem was that my monitor did not pick up any signal. So I connected the monitor to my motherboard and it works fine. Then I checked the device manager and it didn't detect any my gpu, under the hidden devices it said this for the gpu:
"Currently, this hardware device is not connected to the computer. (Code 45)

To solve this problem, reconnect this hardware device to the computer. "

So, I was wondering what I should do, do I reconnect it or install the drivers again or could it damage my gpu due to a surge?

Thanks in advance.

CF Card 64GB exFat Format on D300?

So I was able to make my D300 "work" with a 128G CF disk by creating a 32G primary partition on the drive and formatting it with fat32. I tried to format the entire drive in fat32 at 128G and 64G but the camera says it is full, so the camera can only read 32G FAT32 max.

Then I made an NFTS partition on the rest of the disk to manually back up the images on a computer with a CF card reader.

However, it is important not to try to format the disc with the camera. It will format the FAT32 partition to the maximum size, not the assigned size, thus deleting the secondary NFTS partition on the disk and making the primary partition too large for the camera to use.

To make a 32G partition, use the integrated disk management in Windows. Remove any volume on the disk. Create a new primary partition and do it at most 32,768mb, which is binary for 32G. Format the drive in FAT32, not NTFS or exFAT. Then, in the rest of the drive, you can create another partition with the rest of the drive and format it as you wish

graphics card – Windows 10 blue screen nvlddmkm.sys

My Windows 10 machine has blue screen problems with strange artifacts. I still don't want to hurry to the conclusion and buy a new graphics card.

enter the description of the image here

It happens frequently after logging into Windows. Right now I am booted into Windows 10 safe mode with networks to write this thread.

So I uninstalled my graphics driver and downloaded the latest version. On the first attempt, he said strangely that the driver is not compatible with this version of Windows, which is strange because the driver's date is only 10 days ago. A restart on the PC solved that problem strangely. After installing it, the problem persists.

Any ideas?

External SD: why does my device say "Virtual SD Card not supported"?

Galaxy S9: Although the SD card appears mounted correctly, there is an error message that indicates "virtual SD card not compatible" with a formatting option that does not seem to work (when formatting is complete, the message is still present, even after restarting ) Does anyone know what this means? (This message applies to all inserted SD cards, SDHC, SDXC)

networks – Virtualbox: the configuration of the 2-network card makes it impossible to reach the Internet

I have an Ubuntu 18.04 client installed in Vbox with 2 NICs: 1 in NAT (DHCP) and 1 as an internal network card, the latter with a manual IP, to try to communicate with an Ubuntu virtual server that I also created.

When only the first NIC is active, I can access the Internet freely, even though a traceroute only returns asterisks.

If I activate the second one, the Internet is cut and I have no idea how to solve it.

Here is the configuration of the NIC (enp0s3 is the "normal" NIC and enp0s8 the internal network NIC):

enter the description of the image here

And here is my routing table:

enter the description of the image here

This network is also present, although I have no idea why …