Multiple TextView in RecycleView. how to do that?

Question

Hello I just started the Android and I do not understand how to put more TextView in a RecyclerView I have already seen this solution but I do not understand: How to create RecyclerView with multiple view type?

I tried to make a table with multiple dimensions but it did not work.

Adapter:

public class DeviceRecyclerView extends RecyclerView.Adapter {

    private String[]data;
    public DeviceRecyclerView(String[]data){
        this.data = data;

    }
    @Override
    public DeviceRecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        View view = inflater.inflate(R.layout.device_list_row, parent , false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        String name = data[position];
        String rssi = data[position];
        String uuid = data[position];

        holder.DeviceNameTextView.setText(name);
        holder.DeviceUUIDTextViewValue.setText(rssi);
        holder.DeviceRSSIVTextViewValue.setText(uuid);


    }

    @Override
    public int getItemCount() {
        return data.length;
    }

    public class ViewHolder extends RecyclerView.ViewHolder{
        TextView DeviceNameTextView;
        TextView DeviceUUIDTextViewValue;
        TextView DeviceRSSIVTextViewValue;

        public ViewHolder (View itemView){
            super(itemView);
            DeviceNameTextView = itemView.findViewById(R.id.DeviceNameTextView);
            DeviceUUIDTextViewValue = itemView.findViewById(R.id.DeviceUUIDTextViewValue);
            DeviceRSSIVTextViewValue = itemView.findViewById(R.id.DeviceRSSIVTextViewValue);
        }
    }

MainActivity:

RecyclerView deviceList = (RecyclerView)findViewById(R.id.recycler_view_NoPaired);
        deviceList.setLayoutManager(new LinearLayoutManager(this));
        String[]names = {"Samsung64656"};
        String[]rssi = {"ezez"};
        String[]uuid = {"08:90:e5:90"};
        deviceList.setAdapter(new DeviceRecyclerView(names));

My XML.

Please explain me clearly how to do it. I am French sorry for spelling errors.

Benjamin · Accepted Answer

You just need to add some textView in you'r XML row (named device_list_row.xml), and init their in your adapter, like you have already did with 3 textview.

But's more easy with Object than use array of string, for data. for example in you'r case , make Device class object

Device.java
public class Device {
        String name;
        String rssi;
        String uuid;
        public String getName() {
                return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getRssi() {
            return rssi;
        }

        public void setRssi(String rssi) {
            this.rssi = rssi;
        }

        public String getUuid() {
            return uuid;
        }

        public void setUuid(String uuid) {
            this.uuid = uuid;
        }


}

And adapter code ->

public class DeviceRecyclerView extends RecyclerView.Adapter {

private ArrayList deviceList;
public DeviceRecyclerView(Arraylist deviceList){
    this.deviceList= deviceList;

}
@Override
public DeviceRecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    LayoutInflater inflater = LayoutInflater.from(parent.getContext());
    View view = inflater.inflate(R.layout.device_list_row, parent , false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    Device device = deviceList.get(position);

    holder.deviceNameTextView.setText(device.getName());
    holder.deviceUUIDTextViewValue.setText(device.getUuid());
    holder.deviceRSSIVTextViewValue.setText(device.getRssi());



}

@Override
public int getItemCount() {
    return deviceList.length;
}

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
    TextView deviceNameTextView, deviceUUIDTextViewValue, deviceRSSIVTextViewValue;

    public ViewHolder(View itemView)  {

        super(itemView);
        itemView.setOnClickListener(this);
        deviceNameTextView = itemView.findViewById(R.id.DeviceNameTextView);
        deviceUUIDTextViewValue = itemView.findViewById(R.id.DeviceUUIDTextViewValue);
        deviceRSSIVTextViewValue = itemView.findViewById(R.id.DeviceRSSIVTextViewValue);
    }

    @Override
    public void onClick(View v) {
        Log.i("DEBUG","Item RecyclerView Cliqué");
    }
}

With that, you init your Adapter with list of Device Object, who can have any variable has you want without need to pass more array or data to Adapter:-)

And for make a new Device, and use it in RV

Device device = new Device();
device.setName("Device Name 01");
device.setUuid("uuid value");
device.SetRssi("rssi value");

ArrayList deviceList = new ArrayList<>();
deviceList.add(device);

//Init adapter and fill it
DeviceRecyclerView deviceRecyclerView = new DeviceRecyclerView(deviceList);


LinearLayoutManager llm = new LinearLayoutManager(getContext());
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(llm);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(deviceRecyclerView);

Multiple TextView in RecycleView. how to do that?

Answers (1)

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