DonateActivity.java

package ru.perm.trubnikov.gps2sms;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;

import com.anjlab.android.iab.v3.BillingProcessor;
import com.anjlab.android.iab.v3.TransactionDetails;


public class DonateActivity extends BaseActivity {

    private static final String LICENSE_KEY = null; // PUT YOUR MERCHANT KEY HERE; // UPD: NO NEED to verify donations
    private BillingProcessor bp;
    private boolean readyToPurchase = false;

    private final String PRODUCT_ID_1 = "donation_1";
    private final String PRODUCT_ID_2 = "donation_2";
    private final String PRODUCT_ID_3 = "donation_3";
    private final String PRODUCT_ID_4 = "donation_4";
    private final String PRODUCT_ID_5 = "donation_5";

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (!bp.handleActivityResult(requestCode, resultCode, data))
            super.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onDestroy() {
        if (bp != null)
            bp.release();
        super.onDestroy();
    }

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

        ShowBackButton();

        setContentView(R.layout.activity_donate);

        bp = new BillingProcessor(DonateActivity.this, LICENSE_KEY, new BillingProcessor.IBillingHandler() {
            @Override
            public void onProductPurchased(String productId, TransactionDetails details) {
                //DBHelper.ShowToastT(DonateActivity.this, "onProductPurchased: " + productId, Toast.LENGTH_LONG);
                refreshPurchasesStatus();
            }

            @Override
            public void onBillingError(int errorCode, Throwable error) {
                // DBHelper.ShowToastT(DonateActivity.this, "onBillingError: " + Integer.toString(errorCode), Toast.LENGTH_LONG);
                refreshPurchasesStatus();
            }

            @Override
            public void onBillingInitialized() {
                readyToPurchase = true;
                DonatePriceTextLoadAsyncTask mt = new DonatePriceTextLoadAsyncTask();
                mt.execute();
            }

            @Override
            public void onPurchaseHistoryRestored() {
                //DBHelper.ShowToastT(DonateActivity.this, "onPurchaseHistoryRestored", Toast.LENGTH_LONG);
                refreshPurchasesStatus();
            }
        });

        // ListView on Fragments
        DonateListFragment fragment = new DonateListFragment();
        getSupportFragmentManager().beginTransaction().replace(R.id.frgmCont, fragment).commit();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.donate_actions, menu);
        return (super.onCreateOptionsMenu(menu));
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                finish();
                return true;
            case R.id.action_refresh:
                refreshPurchasesStatus();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    public void ShowBackButton() {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    /**
     * Restores purchases, refreshes purchases local cache
     */
    private void refreshPurchasesStatus() {
        DonateStatusesLoadAsyncTask st = new DonateStatusesLoadAsyncTask();
        st.execute();
    }

    public void tryToPurchase(String productId) {
        if (readyToPurchase) {
            refreshPurchasesStatus();
            if (bp.isPurchased(productId)) {
                DBHelper.ShowToast(DonateActivity.this, R.string.donation_already_purchased, Toast.LENGTH_LONG);
            } else {
                bp.purchase(DonateActivity.this, productId);
            }
        } else {
            DBHelper.ShowToast(DonateActivity.this, R.string.donation_billing_not_ready, Toast.LENGTH_LONG);
        }
    }

    public String getProductId(int idx) {
        switch (idx) {
            case 1:
                return PRODUCT_ID_1;
            case 2:
                return PRODUCT_ID_2;
            case 3:
                return PRODUCT_ID_3;
            case 4:
                return PRODUCT_ID_4;
            case 5:
                return PRODUCT_ID_5;
            default:
                return "error_product_id";
        }
    }

    /**
     * AsyncTask for loading text descriptions of purchases
     */
    class DonatePriceTextLoadAsyncTask extends AsyncTask<Void, String, Void> {

        @Override
        protected Void doInBackground(Void... params) {
            try {
                String[] progress = new String[]{"", "", "", "", ""};

                for (int i = 0; i <= 4; i++) {
                    //TimeUnit.SECONDS.sleep(1);
                    progress[i] = bp.getPurchaseListingDetails(getProductId(i + 1)).priceText;
                    publishProgress(progress);
                }

            } catch (Exception e) {
                Log.d("gps2sms", "---> Cannot load priceText from Google Play ");
            }
            return null;
        }

        @Override
        protected void onProgressUpdate(String... values) {
            super.onProgressUpdate(values);
            try {
                DonateListFragment fragment = (DonateListFragment) getSupportFragmentManager().findFragmentById(R.id.frgmCont);
                fragment.refreshListItemsDescs(values[0], values[1], values[2], values[3], values[4]);
            } catch (Exception e) {
                Log.d("gps2sms", "---> Cannot set prices (onProgressUpdate)");
            }
        }

    }


    /**
     * AsyncTask for checking purchases which were made by user.
     * Also synchronizes completed purchases with local settings.
     */
    class DonateStatusesLoadAsyncTask extends AsyncTask<Void, Void, WrapperStatuses> {

        @Override
        protected WrapperStatuses doInBackground(Void... params) {
            try {

                WrapperStatuses res = new WrapperStatuses();
                if (bp.loadOwnedPurchasesFromGoogle()) {
                    for (int i = 1; i <= 5; i++) {
                        res.statuses[i - 1] = bp.isPurchased(getProductId(i)) ? 1 : 0;
                    }
                }
                return res;

            } catch (Exception e) {
                Log.d("gps2sms", "---> failed to retrieve purchases statuses from Google Play");
            }
            return null;
        }

        @Override
        protected void onPostExecute(WrapperStatuses result) {
            super.onPostExecute(result);

            try {
                SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(DonateActivity.this);
                SharedPreferences.Editor editor = settings.edit();
                for (int i = 1; i <= 5; i++) {
                    editor.putInt("prefDonate" + i, result.statuses[i - 1]);
                }
                editor.commit();

                DonateListFragment fragment = (DonateListFragment) getSupportFragmentManager().findFragmentById(R.id.frgmCont);
                fragment.refreshListItemsStatus(settings.getInt("prefDonate1", 0),
                        settings.getInt("prefDonate2", 0),
                        settings.getInt("prefDonate3", 0),
                        settings.getInt("prefDonate4", 0),
                        settings.getInt("prefDonate5", 0));

            } catch (Exception e) {
                Log.d("gps2sms", "---> failed to refresh list (onPostExecute)");
            }
        }
    }

    public class WrapperStatuses {
        public Integer[] statuses = new Integer[]{0, 0, 0, 0, 0};
    }

}