PurchasesFragment.java

package com.alorma.github.ui.activity;

import android.app.Activity;
import android.app.Fragment;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.content.ServiceConnection;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import com.android.vending.billing.IInAppBillingService;
import java.util.ArrayList;
import java.util.Collections;
import java.util.UUID;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * Created by bernat.borras on 24/10/15.
 */
public class PurchasesFragment extends Fragment {

  private static final String SKU_MULTI_ACCOUNT = "com.alorma.github.multiaccount";

  private IInAppBillingService mService;
  ServiceConnection mServiceConn = new ServiceConnection() {
    @Override
    public void onServiceDisconnected(ComponentName name) {
      mService = null;
    }

    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
      mService = IInAppBillingService.Stub.asInterface(service);
    }
  };

  private String purchaseId;

  private PurchasesCallback purchasesCallback;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    createBillingService();
  }

  private void createBillingService() {
    Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
    serviceIntent.setPackage("com.android.vending");
    if (mService == null) {
      getActivity().bindService(serviceIntent, mServiceConn, Context.BIND_AUTO_CREATE);
    }
  }

  public void checkSku(PurchasesCallback purchasesCallback) {
    this.purchasesCallback = purchasesCallback;
    SKUTask task = new SKUTask();
    task.execute(SKU_MULTI_ACCOUNT);
  }

  public void finishPurchase(int requestCode, int resultCode, Intent data, PurchasesCallback callback) {
    if (requestCode == 1001) {
      String purchaseData = data.getStringExtra("INAPP_PURCHASE_DATA");
      if (resultCode == Activity.RESULT_OK) {
        try {
          JSONObject jo = new JSONObject(purchaseData);
          String sku = jo.getString("productId");
          String developerPayload = jo.getString("developerPayload");
          if (callback != null) {
            boolean purchased = developerPayload.equals(purchaseId) && SKU_MULTI_ACCOUNT.equals(sku);
            callback.onMultiAccountPurchaseResult(purchased);
          }
        } catch (JSONException e) {

          e.printStackTrace();
        }
      } else {
        int response_code = data.getIntExtra("RESPONSE_CODE", 0);
        if (callback != null) {
          callback.onMultiAccountPurchaseResult(response_code == 6);
        }
      }
    }
  }

  public void showDialogBuyMultiAccount() {
    try {
      purchaseId = UUID.randomUUID().toString();
      Bundle buyIntentBundle = mService.getBuyIntent(3, getActivity().getPackageName(), SKU_MULTI_ACCOUNT, "inapp", purchaseId);
      PendingIntent pendingIntent = buyIntentBundle.getParcelable("BUY_INTENT");
      getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), 1001, new Intent(), 0, 0, 0);
    } catch (RemoteException | IntentSender.SendIntentException e) {
      e.printStackTrace();
    }
  }

  public interface PurchasesCallback {
    void onMultiAccountPurchaseResult(boolean multiAccountPurchased);
  }

  private class SKUTask extends AsyncTask<String, Void, Bundle> {

    @Override
    protected Bundle doInBackground(String... strings) {
      if (strings != null) {
        ArrayList<String> skuList = new ArrayList<>();
        Collections.addAll(skuList, strings);
        Bundle querySkus = new Bundle();
        querySkus.putStringArrayList("ITEM_ID_LIST", skuList);

        try {
          return mService.getPurchases(3, getActivity().getPackageName(), "inapp", null);
        } catch (RemoteException e) {
          e.printStackTrace();
        }
      }
      return null;
    }

    @Override
    protected void onPostExecute(Bundle ownedItems) {
      super.onPostExecute(ownedItems);
      if (ownedItems != null) {
        int response = ownedItems.getInt("RESPONSE_CODE");
        if (response == 0) {
          ArrayList<String> ownedSkus = ownedItems.getStringArrayList("INAPP_PURCHASE_ITEM_LIST");

          if (ownedSkus != null && purchasesCallback != null) {
            purchasesCallback.onMultiAccountPurchaseResult(!ownedSkus.isEmpty());
          }
        }
      }
    }
  }
}