Added option to support the development by donating.

app/build.gradle

@@ -101,6 +101,8 @@ dependencies {
 
     compile 'com.jakewharton:butterknife:7.0.1'
 
+    compile 'com.anjlab.android.iab.v3:library:1.0.26'
+
     debugCompile 'com.squareup.leakcanary:leakcanary-android:1.3.1'
     releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.3.1'
 }

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.BROADCAST_STICKY" />
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
+    <uses-permission android:name="com.android.vending.BILLING" />
 
     <application
         android:name=".App"

app/src/main/assets/changelog.html

@@ -28,6 +28,7 @@
 <h3>Version 0.9.44 beta2</h3>
 
 <ol>
+    <li><b>NEW:</b> Added option to support the development by donating.</li>
     <li><b>FIX:</b> Fixed status bar coloring for Lollipop and Marshmallow.</li>
 </ol>
 

app/src/main/java/com/kabouzeid/gramophone/App.java

@@ -19,6 +19,8 @@ import io.fabric.sdk.android.Fabric;
 public class App extends Application {
     public static final String TAG = App.class.getSimpleName();
 
+    public static final String GOOGLE_PLAY_LICENSE_KEY = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjMeADN5Ffnt/ml5SYxNPCn8kGcOYGpHEfNSCts99vVxqmCn6C01E94c17j7rUK2aeHur5uxphZylzopPlQ8P8l1fqty0GPUNRSo18FCJzfGH8HZAwZYOcnRFPaXdaq3InyFJhBiODh2oeAcVK/idH6QraQ4r9HIlzigAg6lgwzxl2wJKDh7X/GMdDntCyzDh8xDQ0wIawFgvgojHwqh2Ci8Gnq6EYRwPA9yHiIIksT8Q30QyM5ewl5QcnWepsls7enNqeHarhpmSibRUDgCsxHoOpny7SyuvZvUI3wuLckDR0ds9hrt614scHHqDOBp/qWCZiAgOPVAEQcURbV09qQIDAQAB";
+
     private RefWatcher refWatcher;
 
     public static RefWatcher getRefWatcher(Context context) {

app/src/main/java/com/kabouzeid/gramophone/ui/activities/MainActivity.java

@@ -33,9 +33,15 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.afollestad.materialcab.MaterialCab;
+import com.afollestad.materialdialogs.MaterialDialog;
 import com.afollestad.materialdialogs.ThemeSingleton;
+import com.anjlab.android.iab.v3.BillingProcessor;
+import com.anjlab.android.iab.v3.BillingProcessor.IBillingHandler;
+import com.anjlab.android.iab.v3.TransactionDetails;
+import com.kabouzeid.gramophone.App;
 import com.kabouzeid.gramophone.R;
 import com.kabouzeid.gramophone.adapter.PagerAdapter;
 import com.kabouzeid.gramophone.dialogs.AboutDialog;
@@ -72,7 +78,7 @@ import butterknife.Bind;
 import butterknife.ButterKnife;
 
 public class MainActivity extends AbsSlidingMusicPanelActivity
-        implements KabViewsDisableAble, CabHolder {
+        implements KabViewsDisableAble, CabHolder, IBillingHandler {
 
     public static final String TAG = MainActivity.class.getSimpleName();
 
@@ -89,10 +95,12 @@ public class MainActivity extends AbsSlidingMusicPanelActivity
     @Bind(R.id.drawer_layout)
     DrawerLayout drawerLayout;
 
-    private PagerAdapter pagerAdapter;
-    private MaterialCab cab;
     @Nullable
     private View navigationDrawerHeader;
+    private PagerAdapter pagerAdapter;
+    private MaterialCab cab;
+
+    private BillingProcessor billingProcessor;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -114,6 +122,8 @@ public class MainActivity extends AbsSlidingMusicPanelActivity
             setNavigationBarThemeColor();
         setStatusBarThemeColor();
 
+        billingProcessor = new BillingProcessor(this, App.GOOGLE_PLAY_LICENSE_KEY, this);
+
         checkChangelog();
     }
 
@@ -232,6 +242,14 @@ public class MainActivity extends AbsSlidingMusicPanelActivity
                         menuItem.setChecked(true);
                         pager.setCurrentItem(PagerAdapter.MusicFragments.PLAYLIST.ordinal(), true);
                         break;
+                    case R.id.support_development:
+                        new Handler().postDelayed(new Runnable() {
+                            @Override
+                            public void run() {
+                                showDonationDialog();
+                            }
+                        }, 200);
+                        break;
                     case R.id.nav_settings:
                         new Handler().postDelayed(new Runnable() {
                             @Override
@@ -588,4 +606,54 @@ public class MainActivity extends AbsSlidingMusicPanelActivity
             e.printStackTrace();
         }
     }
+
+    private void showDonationDialog() {
+        new MaterialDialog.Builder(this)
+                .title(R.string.support_development)
+                .items(R.array.donation_names)
+                .itemsCallback(new MaterialDialog.ListCallback() {
+                    @Override
+                    public void onSelection(MaterialDialog materialDialog, View view, int i, CharSequence charSequence) {
+                        final String[] ids = getResources().getStringArray(R.array.donation_ids);
+                        billingProcessor.purchase(MainActivity.this, ids[i]);
+                    }
+                }).show();
+    }
+
+    @Override
+    public void onProductPurchased(String productId, TransactionDetails details) {
+        billingProcessor.consumePurchase(productId);
+        Toast.makeText(this, R.string.thank_you, Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void onPurchaseHistoryRestored() {
+        // ignore
+    }
+
+    @Override
+    public void onBillingError(int errorCode, Throwable error) {
+        Toast.makeText(this, "Billing error: code = " + errorCode + ", error: " +
+                (error != null ? error.getMessage() : "?"), Toast.LENGTH_LONG).show();
+    }
+
+    @Override
+    public void onBillingInitialized() {
+        // ignore
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (!billingProcessor.handleActivityResult(requestCode, resultCode, data)) {
+            super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        if (billingProcessor != null) {
+            billingProcessor.release();
+        }
+        super.onDestroy();
+    }
 }

app/src/main/res/menu/menu_drawer.xml

@@ -25,6 +25,10 @@
     <group
         android:id="@+id/navigation_drawer_menu_category_other"
         android:checkableBehavior="none">
+        <item
+            android:id="@+id/support_development"
+            android:icon="@drawable/ic_favorite_white_24dp"
+            android:title="@string/support_development" />
         <item
             android:id="@+id/nav_settings"
             android:icon="@drawable/ic_settings_white_24dp"

app/src/main/res/values/donottranslate.xml

@@ -1,7 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">Phonograph</string>
+    <string name="app_name" translatable="false">Phonograph</string>
-    <string name="credits_4">\u0020<a href="http://cookicons.co/">Cookicons</a></string>
+    <string name="credits_4" translatable="false">\u0020<a href="http://cookicons.co/">Cookicons</a></string>
-    <string name="credits_2">\u0020<b>Karim Abou Zeid</b>.\n<a href="https://plus.google.com/+KarimAbouZeid23697">Google+</a>&#160;&#160;&#160;<a href="https://twitter.com/karim23697">Twitter</a>\n\n</string>
+    <string name="credits_2" translatable="false">\u0020<b>Karim Abou Zeid</b>.\n<a href="https://plus.google.com/+KarimAbouZeid23697">Google+</a>&#160;&#160;&#160;<a href="https://twitter.com/karim23697">Twitter</a>\n\n</string>
-    <string name="special_thanks_names">\u0020<a href="https://google.com/+AidanFollestad">Aidan Follestad</a>\n\n</string>
+    <string name="special_thanks_names" translatable="false">\u0020<a href="https://google.com/+AidanFollestad">Aidan Follestad</a>\n\n</string>
+
+    <string-array name="donation_names" translatable="false">
+        <item>$1.00</item>
+        <item>$3.00</item>
+        <item>$5.00</item>
+        <item>$10.00</item>
+        <item>$15.00</item>
+        <item>$20.00</item>
+    </string-array>
+    <string-array name="donation_ids" translatable="false">
+        <item>donation_1</item>
+        <item>donation_3</item>
+        <item>donation_5</item>
+        <item>donation_10</item>
+        <item>donation_15</item>
+        <item>donation_20</item>
+    </string-array>
 </resources>

app/src/main/res/values/strings.xml

@@ -175,4 +175,6 @@
     <string name="changelog">Changelog</string>
     <string name="permission_to_access_external_storage_denied">Permission to access external storage denied.</string>
     <string name="back">back</string>
+    <string name="support_development">Support development</string>
+    <string name="thank_you">Thank you!</string>
 </resources>