Skeleton of a billing activity

astrid/res/layout/billing_activity.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical" >
+    
+
+    <Button
+        android:id="@+id/buy_month"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        android:text="Buy one month"/>
+
+    <Button
+        android:id="@+id/buy_year"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        android:text="Buy one year"/>
+    
+</LinearLayout>

astrid/res/values/strings-premium.xml

@@ -44,4 +44,12 @@
     <string name="file_err_copy">Error copying file for attachment</string>
     <string name="file_err_download">Error downloading file</string>
     <string name="file_err_show">Sorry, the system does not yet support this type of file</string>
+    
+    <!-- in app billing -->
+    <string name="subscriptions_not_supported">Subscriptions not supported</string>
+    <string name="subscriptions_not_supported_message">Sorry! The Market billing
+     service on this device does not support subscriptions at this time.</string>
+    <string name="subscriptions_learn_more">Learn more</string>
+    <string name="subscriptions_help_url" formatted="false">http://market.android.com/support/bin/answer.py?answer=1050566&amp;hl=%lang%&amp;dl=%region%</string>
+    
 </resources>

astrid/src/com/todoroo/astrid/billing/BillingActivity.java

@@ -0,0 +1,99 @@
+package com.todoroo.astrid.billing;
+
+import java.util.Locale;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+
+import com.timsu.astrid.R;
+
+public class BillingActivity extends Activity {
+
+    private BillingService billingService;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.billing_activity);
+
+        setupButtons();
+
+        billingService = new BillingService();
+        billingService.setContext(this);
+
+        if (!billingService.checkBillingSupported(BillingConstants.ITEM_TYPE_SUBSCRIPTION)) {
+            showSubscriptionsNotSupported();
+        }
+    }
+
+    private void setupButtons() {
+        Button buyMonth = (Button) findViewById(R.id.buy_month);
+        Button buyYear = (Button) findViewById(R.id.buy_year);
+
+        //TODO: Figure out if we need a payload for any reason
+
+        buyMonth.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (!billingService.requestPurchase(BillingConstants.PRODUCT_ID_MONTHLY,
+                        BillingConstants.ITEM_TYPE_SUBSCRIPTION, null)) {
+                    showSubscriptionsNotSupported();
+                }
+            }
+        });
+
+        buyYear.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (!billingService.requestPurchase(BillingConstants.PRODUCT_ID_YEARLY,
+                        BillingConstants.ITEM_TYPE_SUBSCRIPTION, null)) {
+                    showSubscriptionsNotSupported();
+                }
+            }
+        });
+    }
+
+    private void showSubscriptionsNotSupported() {
+        String helpUrl = replaceLanguageAndRegion(getString(R.string.subscriptions_help_url));
+        final Uri helpUri = Uri.parse(helpUrl);
+
+        new AlertDialog.Builder(this)
+            .setTitle(R.string.subscriptions_not_supported)
+            .setMessage(R.string.subscriptions_not_supported_message)
+            .setCancelable(false)
+            .setPositiveButton(R.string.DLG_ok, null)
+            .setNegativeButton(R.string.subscriptions_learn_more, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int which) {
+                    Intent intent = new Intent(Intent.ACTION_VIEW, helpUri);
+                    startActivity(intent);
+                }
+            }).create().show();
+    }
+
+    /**
+     * Replaces the language and/or country of the device into the given string.
+     * The pattern "%lang%" will be replaced by the device's language code and
+     * the pattern "%region%" will be replaced with the device's country code.
+     *
+     * @param str the string to replace the language/country within
+     * @return a string containing the local language and region codes
+     */
+    @SuppressWarnings("nls")
+    private String replaceLanguageAndRegion(String str) {
+        // Substitute language and or region if present in string
+        if (str.contains("%lang%") || str.contains("%region%")) {
+            Locale locale = Locale.getDefault();
+            str = str.replace("%lang%", locale.getLanguage().toLowerCase());
+            str = str.replace("%region%", locale.getCountry().toLowerCase());
+        }
+        return str;
+    }
+}

astrid/src/com/todoroo/astrid/billing/BillingConstants.java

@@ -53,6 +53,10 @@ public class BillingConstants {
     public static final String ITEM_TYPE_SUBSCRIPTION = "subs";
 
 
+
+    public static final String PRODUCT_ID_MONTHLY = "premium_monthly";
+    public static final String PRODUCT_ID_YEARLY = "premium_yearly";
+
  // The response codes for a request, defined by Android Market.
     public enum ResponseCode {
         RESULT_OK,