dependencies {
  implementation 'com.clover.sdk:clover-android-sdk:latest.release'
}

dependencies {
  implementation 'com.clover.sdk:clover-android-sdk:VERSION_NUMBER'
}

/*
1) Replace <your.package.name.here> below with your package name.
*/

package com.your.package.name.here;

import android.accounts.Account;
import android.os.AsyncTask;
import android.os.RemoteException;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import android.widget.TextView;

import com.clover.sdk.util.CloverAccount;
import com.clover.sdk.v1.BindingException;
import com.clover.sdk.v1.ClientException;
import com.clover.sdk.v1.ServiceException;
import com.clover.sdk.v3.inventory.InventoryConnector;
import com.clover.sdk.v3.inventory.Item;
import com.clover.sdk.v3.inventory.InventoryContract;

/*
2) To get or set any Clover data, go through Clover’s Connector classes, 
   such as InventoryConnector.
*/

public class MainActivity extends AppCompatActivity {

    private Account mAccount;
    private InventoryConnector mInventoryConnector;
    private TextView mTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    protected void onResume() {
        super.onResume();

        mTextView = (TextView) findViewById(R.id.activity_main_text_view);

        // Retrieve the Clover account
        if (mAccount == null) {
            mAccount = CloverAccount.getAccount(this);

            if (mAccount == null) {
                return;
            }
        }

        // Connect InventoryConnector
        connect();

        // Get Item
        new InventoryAsyncTask().execute();    

 }

 /*
3) Disconnect from the Clover Connectors when you aren’t using them to 
   follow Android best practices and let the connection end naturally.
*/
  
    @Override
    protected void onDestroy() {
        super.onDestroy();
        disconnect();
    }

    private void connect() {
        disconnect();
        if (mAccount != null) {
            mInventoryConnector = new InventoryConnector(this, mAccount, null);
            mInventoryConnector.connect();
        }
    }

    private void disconnect() {
        if (mInventoryConnector != null) {
            mInventoryConnector.disconnect();
            mInventoryConnector = null;
        }
    }

/*
4) Use async tasks when working with Clover Connector classes to minimize 
   work on the main UI thread while fetching or changing data. See 
   https://docs.clover.com/clover-platform/docs/clover-development-
   basics-android#section-async-tasks-and-executors.
*/  
  
    private class InventoryAsyncTask extends AsyncTask<Void, Void, Item> {

        @Override
        protected final Item doInBackground(Void... unused) {
            String itemId = null;
            try (Cursor cursor = getContentResolver().query(InventoryContract.Item.contentUriWithAccount(mAccount),
                    new String[] { InventoryContract.Item.UUID }, null, null, null)){
                //Get inventory item
                if (cursor != null && cursor.moveToFirst()) {
                    itemId = cursor.getString(0);
                }
                return itemId != null ? mInventoryConnector.getItem(itemId) : null;
            } catch (RemoteException | ClientException | ServiceException | BindingException e) {
                e.printStackTrace();
            }

            return null;
        }

/*
5) Set the TextView to display the item’s name. For other methods that Item 
   objects have, see 
   https://clover.github.io/clover-android-sdk/com/clover/sdk/v3/inventory
   /Item.html 
*/
      
        @Override
        protected final void onPostExecute(Item item) {
            if (item != null) {
                mTextView.setText(item.getName());
            }
        }
    }
}