Replaced BuyDialog with PurchaseActivity

app/build.gradle

@@ -75,7 +75,6 @@ ext {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
 
     compile "com.android.support:support-compat:$supportLibVersion"
     compile "com.android.support:support-core-utils:$supportLibVersion"
@@ -94,19 +93,18 @@ dependencies {
     compile "com.android.support:preference-v7:$supportLibVersion"
     compile "com.android.support:preference-v14:$supportLibVersion"
 
-    compile 'com.crashlytics.sdk.android:crashlytics:2.6.7'
+//    compile 'com.h6ah4i.android.widget.advrecyclerview:advrecyclerview:0.10.6'
+    // TODO: go back to master branch as soon as possible
 
+    compile 'com.crashlytics.sdk.android:crashlytics:2.6.7'
     compile 'com.github.kabouzeid:app-theme-helper:1.3.7'
     compile 'com.github.kabouzeid:RecyclerView-FastScroll:1.0.16-kmod'
     compile 'com.github.kabouzeid:SeekArc:1.2-kmod'
     compile 'com.github.kabouzeid:AndroidSlidingUpPanel:3.3.0-kmod3'
-
     compile 'com.afollestad.material-dialogs:core:0.9.4.5'
     compile 'com.afollestad.material-dialogs:commons:0.9.4.5'
     compile 'com.afollestad:material-cab:0.1.12'
-
+    compile 'com.github.h6ah4i:android-advancedrecyclerview:feature~support_libraries_v26-SNAPSHOT'
-//    compile 'com.h6ah4i.android.widget.advrecyclerview:advrecyclerview:0.10.6'
-    compile 'com.github.h6ah4i:android-advancedrecyclerview:feature~support_libraries_v26-SNAPSHOT' // TODO: go back to master branch as soon as possible
     compile 'com.github.ksoichiro:android-observablescrollview:1.6.0'
     compile 'com.squareup.retrofit2:retrofit:2.3.0'
     compile 'com.squareup.retrofit2:converter-gson:2.3.0'
@@ -117,7 +115,8 @@ dependencies {
     compile 'com.heinrichreimersoftware:material-intro:1.6.2'
     compile 'me.zhanghai.android.materialprogressbar:library:1.4.1'
     compile 'org.eclipse.mylyn.github:org.eclipse.egit.github.core:2.1.5'
-
     compile 'com.jakewharton:butterknife:8.6.0'
+    compile 'com.android.support.constraint:constraint-layout:+'
+    testCompile 'junit:junit:4.12'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.6.0'
 }

app/src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest package="com.kabouzeid.gramophone"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.kabouzeid.gramophone">
+    xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
@@ -21,7 +21,6 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Phonograph.Light"
         tools:ignore="UnusedAttribute">
-
         <activity android:name=".ui.activities.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -203,6 +202,7 @@
                 android:resource="@xml/app_widget_card_info" />
         </receiver>
 
+        <activity android:name=".ui.activities.PurchaseActivity"></activity>
     </application>
 
 </manifest>

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

@@ -49,7 +49,7 @@ public class App extends Application {
 
             @Override
             public void onPurchaseHistoryRestored() {
-                Toast.makeText(App.this, R.string.restored_previous_purchases_please_restart, Toast.LENGTH_LONG).show();
+                Toast.makeText(App.this, R.string.restored_previous_purchase_please_restart, Toast.LENGTH_LONG).show();
             }
 
             @Override
@@ -63,7 +63,7 @@ public class App extends Application {
     }
 
     public static boolean isProVersion() {
-        return BuildConfig.DEBUG || app.billingProcessor.isPurchased(PRO_VERSION_PRODUCT_ID);
+        return app.billingProcessor.isPurchased(PRO_VERSION_PRODUCT_ID);
     }
 
     @Override

app/src/main/java/com/kabouzeid/gramophone/dialogs/BuyDialog.java

@@ -1,135 +0,0 @@
-package com.kabouzeid.gramophone.dialogs;
-
-import android.app.Dialog;
-import android.content.Intent;
-import android.os.AsyncTask;
-import android.os.Build;
-import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.DialogFragment;
-import android.util.Log;
-import android.widget.Toast;
-
-import com.afollestad.materialdialogs.DialogAction;
-import com.afollestad.materialdialogs.MaterialDialog;
-import com.afollestad.materialdialogs.internal.MDButton;
-import com.anjlab.android.iab.v3.BillingProcessor;
-import com.anjlab.android.iab.v3.SkuDetails;
-import com.anjlab.android.iab.v3.TransactionDetails;
-import com.kabouzeid.gramophone.App;
-import com.kabouzeid.gramophone.BuildConfig;
-import com.kabouzeid.gramophone.R;
-
-import java.lang.ref.WeakReference;
-
-/**
- * @author Karim Abou Zeid (kabouzeid)
- */
-public class BuyDialog extends DialogFragment implements BillingProcessor.IBillingHandler {
-    public static final String TAG = BuyDialog.class.getSimpleName();
-
-    private BillingProcessor billingProcessor;
-
-    private AsyncTask skuDetailsLoadAsyncTask;
-
-    public static BuyDialog create() {
-        return new BuyDialog();
-    }
-
-    @NonNull
-    @Override
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        billingProcessor = new BillingProcessor(getContext(), App.GOOGLE_PLAY_LICENSE_KEY, this);
-        return new MaterialDialog.Builder(getContext())
-                .title(R.string.buy_pro)
-                .content("Unlock all features, such as:\n• Folder view\n• All theme colors\n• Black theme\n• Sleep timer")
-                .positiveText(R.string.buy)
-                .onPositive(new MaterialDialog.SingleButtonCallback() {
-                    @Override
-                    public void onClick(@NonNull MaterialDialog materialDialog, @NonNull DialogAction dialogAction) {
-                        billingProcessor.purchase(getActivity(), App.PRO_VERSION_PRODUCT_ID);
-                    }
-                })
-                .build();
-    }
-
-    @Override
-    public void onActivityResult(int requestCode, int resultCode, Intent data) {
-        if (!billingProcessor.handleActivityResult(requestCode, resultCode, data)) {
-            super.onActivityResult(requestCode, resultCode, data);
-        }
-    }
-
-    @Override
-    public void onProductPurchased(String productId, TransactionDetails details) {
-        loadSkuDetails();
-        Toast.makeText(getContext(), R.string.thank_you, Toast.LENGTH_SHORT).show();
-    }
-
-    @Override
-    public void onPurchaseHistoryRestored() {
-        loadSkuDetails();
-        Toast.makeText(getContext(), R.string.restored_previous_purchases_please_restart, Toast.LENGTH_LONG).show();
-    }
-
-    @Override
-    public void onBillingError(int errorCode, Throwable error) {
-        Log.e(TAG, "Billing error: code = " + errorCode, error);
-    }
-
-    @Override
-    public void onBillingInitialized() {
-        loadSkuDetails();
-    }
-
-    @Override
-    public void onDestroy() {
-        if (billingProcessor != null) {
-            billingProcessor.release();
-        }
-        if (skuDetailsLoadAsyncTask != null) {
-            skuDetailsLoadAsyncTask.cancel(true);
-        }
-        super.onDestroy();
-    }
-
-    private void loadSkuDetails() {
-        if (skuDetailsLoadAsyncTask != null) {
-            skuDetailsLoadAsyncTask.cancel(false);
-        }
-        skuDetailsLoadAsyncTask = new SkuDetailsLoadAsyncTask(this).execute();
-    }
-
-    private static class SkuDetailsLoadAsyncTask extends AsyncTask<Void, Void, SkuDetails> {
-        private final WeakReference<BuyDialog> donationDialogWeakReference;
-
-        public SkuDetailsLoadAsyncTask(BuyDialog donationsDialog) {
-            this.donationDialogWeakReference = new WeakReference<>(donationsDialog);
-        }
-
-        @Override
-        protected SkuDetails doInBackground(Void... params) {
-            BuyDialog dialog = donationDialogWeakReference.get();
-            if (dialog != null) {
-                return dialog.billingProcessor.getPurchaseListingDetails(App.PRO_VERSION_PRODUCT_ID);
-            }
-            cancel(false);
-            return null;
-        }
-
-        @Override
-        protected void onPostExecute(SkuDetails skuDetails) {
-            super.onPostExecute(skuDetails);
-            BuyDialog dialog = donationDialogWeakReference.get();
-            if (dialog == null) return;
-
-            if (skuDetails == null) {
-                if (!BuildConfig.DEBUG) dialog.dismiss();
-                return;
-            }
-
-            MDButton positiveButton = ((MaterialDialog) dialog.getDialog()).getActionButton(DialogAction.POSITIVE);
-            positiveButton.setText(String.format("%s %s", dialog.getString(R.string.buy), skuDetails.priceText));
-        }
-    }
-}

app/src/main/java/com/kabouzeid/gramophone/dialogs/SleepTimerDialog.java

@@ -21,6 +21,7 @@ import com.afollestad.materialdialogs.internal.ThemeSingleton;
 import com.kabouzeid.gramophone.App;
 import com.kabouzeid.gramophone.R;
 import com.kabouzeid.gramophone.service.MusicService;
+import com.kabouzeid.gramophone.ui.activities.PurchaseActivity;
 import com.kabouzeid.gramophone.util.MusicUtil;
 import com.kabouzeid.gramophone.util.PreferenceUtil;
 import com.triggertrap.seekarc.SeekArc;
@@ -62,8 +63,7 @@ public class SleepTimerDialog extends DialogFragment {
                         }
                         if (!App.isProVersion()) {
                             Toast.makeText(getActivity(), getString(R.string.sleep_timer_is_a_pro_feature), Toast.LENGTH_LONG).show();
-                            BuyDialog.create().show(getFragmentManager(), "BUY_DIALOG");
+                            startActivity(new Intent(getContext(), PurchaseActivity.class));
-                            dismiss();
                             return;
                         }
 

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

@@ -30,7 +30,6 @@ import com.kabouzeid.appthemehelper.util.ATHUtil;
 import com.kabouzeid.appthemehelper.util.NavigationViewUtil;
 import com.kabouzeid.gramophone.App;
 import com.kabouzeid.gramophone.R;
-import com.kabouzeid.gramophone.dialogs.BuyDialog;
 import com.kabouzeid.gramophone.dialogs.ChangelogDialog;
 import com.kabouzeid.gramophone.glide.SongGlideRequest;
 import com.kabouzeid.gramophone.helper.MusicPlayerRemote;
@@ -57,6 +56,7 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
 
     public static final String TAG = MainActivity.class.getSimpleName();
     public static final int APP_INTRO_REQUEST = 100;
+    public static final int PURCHASE_REQUEST = 101;
 
     private static final int LIBRARY = 0;
     private static final int FOLDERS = 1;
@@ -112,7 +112,7 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
     private void setMusicChooser(int key) {
         if (!App.isProVersion() && key == FOLDERS) {
             Toast.makeText(this, R.string.folder_view_is_a_pro_feature, Toast.LENGTH_LONG).show();
-            BuyDialog.create().show(getSupportFragmentManager(), "BUY_DIALOG");
+            startActivityForResult(new Intent(this, PurchaseActivity.class), PURCHASE_REQUEST);
             key = LIBRARY;
         }
 
@@ -146,6 +146,12 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
             if (!hasPermissions()) {
                 requestPermissions();
             }
+        } else if (requestCode == PURCHASE_REQUEST) {
+            if (resultCode == RESULT_OK) {
+                if (App.isProVersion()) {
+                    setUpPro();
+                }
+            }
         }
     }
 
@@ -169,7 +175,7 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
         NavigationViewUtil.setItemTextColors(navigationView, ThemeStore.textColorPrimary(this), accentColor);
 
         if (App.isProVersion()) {
-            navigationView.getMenu().removeGroup(R.id.navigation_drawer_menu_category_buy_pro);
+            setUpPro();
         }
         navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
             @Override
@@ -196,7 +202,7 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
                         new Handler().postDelayed(new Runnable() {
                             @Override
                             public void run() {
-                                BuyDialog.create().show(getSupportFragmentManager(), "BUY_DIALOG");
+                                startActivityForResult(new Intent(MainActivity.this, PurchaseActivity.class), PURCHASE_REQUEST);
                             }
                         }, 200);
                         break;
@@ -222,6 +228,10 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
         });
     }
 
+    private void setUpPro() {
+        navigationView.getMenu().removeGroup(R.id.navigation_drawer_menu_category_buy_pro);
+    }
+
     private void setUpDrawerLayout() {
         setUpNavigationView();
     }

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

@@ -0,0 +1,172 @@
+package com.kabouzeid.gramophone.ui.activities;
+
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v7.widget.Toolbar;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.Toast;
+
+import com.anjlab.android.iab.v3.BillingProcessor;
+import com.anjlab.android.iab.v3.TransactionDetails;
+import com.kabouzeid.appthemehelper.color.MaterialColor;
+import com.kabouzeid.gramophone.App;
+import com.kabouzeid.gramophone.R;
+import com.kabouzeid.gramophone.ui.activities.base.AbsBaseActivity;
+
+import java.lang.ref.WeakReference;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+
+public class PurchaseActivity extends AbsBaseActivity implements BillingProcessor.IBillingHandler {
+
+    public static final String TAG = PurchaseActivity.class.getSimpleName();
+
+    private static final int ACTIVITY_COLOR = MaterialColor.Green._500.getAsColor();
+
+    @BindView(R.id.toolbar)
+    Toolbar toolbar;
+    @BindView(R.id.restore_button)
+    Button restoreButton;
+    @BindView(R.id.purchase_button)
+    Button purchaseButton;
+
+    private BillingProcessor billingProcessor;
+    private AsyncTask restorePurchaseAsyncTask;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_purchase);
+        setDrawUnderStatusbar(true);
+        ButterKnife.bind(this);
+
+        setStatusbarColor(ACTIVITY_COLOR);
+        setNavigationbarColor(ACTIVITY_COLOR);
+        setTaskDescriptionColor(ACTIVITY_COLOR);
+
+        setSupportActionBar(toolbar);
+        //noinspection ConstantConditions
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setTitle(getString(R.string.purchase) + " Phonograph Pro");
+
+        restoreButton.setEnabled(false);
+        purchaseButton.setEnabled(false);
+
+        restoreButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (restorePurchaseAsyncTask == null || restorePurchaseAsyncTask.getStatus() != AsyncTask.Status.RUNNING) {
+                    restorePurchase();
+                }
+            }
+        });
+
+        purchaseButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                billingProcessor.purchase(PurchaseActivity.this, App.PRO_VERSION_PRODUCT_ID);
+            }
+        });
+
+        billingProcessor = new BillingProcessor(this, App.GOOGLE_PLAY_LICENSE_KEY, this);
+
+
+    }
+
+    private void restorePurchase() {
+        if (restorePurchaseAsyncTask != null) {
+            restorePurchaseAsyncTask.cancel(false);
+        }
+        restorePurchaseAsyncTask = new RestorePurchaseAsyncTask(this).execute();
+    }
+
+    @Override
+    public void onProductPurchased(@NonNull String productId, @Nullable TransactionDetails details) {
+        Toast.makeText(this, R.string.thank_you, Toast.LENGTH_SHORT).show();
+        setResult(RESULT_OK);
+    }
+
+    @Override
+    public void onPurchaseHistoryRestored() {
+        if (App.isProVersion()) {
+            Toast.makeText(this, R.string.restored_previous_purchase_please_restart, Toast.LENGTH_LONG).show();
+            setResult(RESULT_OK);
+        } else {
+            Toast.makeText(this, R.string.no_purchase_found, Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    @Override
+    public void onBillingError(int errorCode, @Nullable Throwable error) {
+        Log.e(TAG, "Billing error: code = " + errorCode, error);
+    }
+
+    @Override
+    public void onBillingInitialized() {
+        restoreButton.setEnabled(true);
+        purchaseButton.setEnabled(true);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (!billingProcessor.handleActivityResult(requestCode, resultCode, data)) {
+            super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        if (billingProcessor != null) {
+            billingProcessor.release();
+        }
+        super.onDestroy();
+    }
+
+    private static class RestorePurchaseAsyncTask extends AsyncTask<Void, Void, Boolean> {
+        private final WeakReference<PurchaseActivity> buyActivityWeakReference;
+
+        public RestorePurchaseAsyncTask(PurchaseActivity purchaseActivity) {
+            this.buyActivityWeakReference = new WeakReference<>(purchaseActivity);
+        }
+
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+            PurchaseActivity purchaseActivity = buyActivityWeakReference.get();
+            if (purchaseActivity != null) {
+                Toast.makeText(purchaseActivity, R.string.restoring_purchase, Toast.LENGTH_SHORT).show();
+            } else {
+                cancel(false);
+            }
+        }
+
+        @Override
+        protected Boolean doInBackground(Void... params) {
+            PurchaseActivity purchaseActivity = buyActivityWeakReference.get();
+            if (purchaseActivity != null) {
+                return purchaseActivity.billingProcessor.loadOwnedPurchasesFromGoogle();
+            }
+            cancel(false);
+            return null;
+        }
+
+        @Override
+        protected void onPostExecute(Boolean b) {
+            super.onPostExecute(b);
+            PurchaseActivity purchaseActivity = buyActivityWeakReference.get();
+            if (purchaseActivity == null || b == null) return;
+
+            if (b) {
+                purchaseActivity.onPurchaseHistoryRestored();
+            } else {
+                Toast.makeText(purchaseActivity, R.string.could_not_restore_purchase, Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+}

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

@@ -28,12 +28,9 @@ import com.kabouzeid.appthemehelper.util.ColorUtil;
 import com.kabouzeid.gramophone.App;
 import com.kabouzeid.gramophone.R;
 import com.kabouzeid.gramophone.appshortcuts.DynamicShortcutManager;
-import com.kabouzeid.gramophone.dialogs.BuyDialog;
-import com.kabouzeid.gramophone.helper.MusicPlayerRemote;
 import com.kabouzeid.gramophone.misc.NonProAllowedColors;
 import com.kabouzeid.gramophone.preferences.NowPlayingScreenPreference;
 import com.kabouzeid.gramophone.preferences.NowPlayingScreenPreferenceDialog;
-import com.kabouzeid.gramophone.service.MusicService;
 import com.kabouzeid.gramophone.ui.activities.base.AbsBaseActivity;
 import com.kabouzeid.gramophone.util.NavigationUtil;
 import com.kabouzeid.gramophone.util.PreferenceUtil;
@@ -82,7 +79,7 @@ public class SettingsActivity extends AbsBaseActivity implements ColorChooserDia
                     if (Arrays.binarySearch(NonProAllowedColors.PRIMARY_COLORS, selectedColor) < 0) {
                         // color wasn't found
                         Toast.makeText(this, R.string.only_the_first_5_colors_available, Toast.LENGTH_LONG).show();
-                        BuyDialog.create().show(getSupportFragmentManager(), "BUY_DIALOG");
+                        startActivity(new Intent(this, PurchaseActivity.class));
                         return;
                     }
                 }
@@ -96,7 +93,7 @@ public class SettingsActivity extends AbsBaseActivity implements ColorChooserDia
                     if (Arrays.binarySearch(NonProAllowedColors.ACCENT_COLORS, selectedColor) < 0) {
                         // color wasn't found
                         Toast.makeText(this, R.string.only_the_first_5_colors_available, Toast.LENGTH_LONG).show();
-                        BuyDialog.create().show(getSupportFragmentManager(), "BUY_DIALOG");
+                        startActivity(new Intent(this, PurchaseActivity.class));
                         return;
                     }
                 }
@@ -202,7 +199,7 @@ public class SettingsActivity extends AbsBaseActivity implements ColorChooserDia
                     String themeName = (String) o;
                     if (themeName.equals("black") && !App.isProVersion()) {
                         Toast.makeText(getActivity(), R.string.black_theme_is_a_pro_feature, Toast.LENGTH_LONG).show();
-                        BuyDialog.create().show(getFragmentManager(), "BUY_DIALOG");
+                        startActivity(new Intent(getContext(), PurchaseActivity.class));
                         return false;
                     }
 

app/src/main/res/layout-w640dp/activity_about_content.xml

@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<android.support.v7.widget.GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:grid="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:padding="8dp"
-    grid:alignmentMode="alignBounds">
-
-    <LinearLayout
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_marginEnd="4dp"
-        android:layout_marginRight="4dp"
-        android:orientation="vertical"
-        grid:layout_column="0"
-        grid:layout_columnWeight="1"
-        grid:layout_row="0">
-
-        <include
-            layout="@layout/card_about_app"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginBottom="8dp" />
-
-        <include layout="@layout/card_support_development" />
-
-    </LinearLayout>
-
-    <LinearLayout
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_marginLeft="4dp"
-        android:layout_marginStart="4dp"
-        android:orientation="vertical"
-        grid:layout_column="1"
-        grid:layout_columnWeight="1"
-        grid:layout_row="0">
-
-        <include
-            layout="@layout/card_author"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginBottom="8dp" />
-
-        <include layout="@layout/card_special_thanks" />
-
-    </LinearLayout>
-
-</android.support.v7.widget.GridLayout>

app/src/main/res/layout/activity_purchase.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".ui.activities.PurchaseActivity">
+
+    <include layout="@layout/status_bar" />
+
+    <android.support.design.widget.AppBarLayout
+        android:id="@+id/app_bar"
+        android:layout_width="match_parent"
+        android:layout_height="128dp"
+        android:layout_below="@+id/status_bar"
+        android:background="@color/md_green_500"
+        android:elevation="4dp">
+
+        <android.support.v7.widget.Toolbar
+            android:id="@+id/toolbar"
+            style="@style/Toolbar"
+            android:background="@android:color/transparent" />
+
+    </android.support.design.widget.AppBarLayout>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_below="@+id/app_bar"
+        android:layout_marginTop="-72dp"
+        android:clipToPadding="false"
+        android:elevation="8dp"
+        android:isScrollContainer="true">
+
+        <include layout="@layout/activity_purchase_content" />
+
+    </ScrollView>
+
+</RelativeLayout>

app/src/main/res/layout/activity_purchase_content.xml

@@ -0,0 +1,90 @@
+<?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"
+    android:paddingBottom="@dimen/card_on_app_bar_side_padding"
+    android:paddingLeft="@dimen/card_on_app_bar_side_padding"
+    android:paddingRight="@dimen/card_on_app_bar_side_padding"
+    android:paddingTop="8dp"
+    android:weightSum="1">
+
+    <android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        app:cardBackgroundColor="?cardBackgroundColor"
+        app:cardUseCompatPadding="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <ImageView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:adjustViewBounds="true"
+                android:scaleType="fitStart"
+                android:src="@drawable/promo_banner16" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:paddingBottom="16dp"
+                android:paddingLeft="16dp"
+                android:paddingRight="16dp">
+
+                <TextView
+                    android:id="@+id/title"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="sans-serif"
+                    android:gravity="center_vertical"
+                    android:paddingBottom="16dp"
+                    android:paddingTop="24dp"
+                    android:text="Phonograph Pro"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Title" />
+
+                <TextView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="sans-serif"
+                    android:text="Unlocks extra features, such as the folder view, all theme colors, a black theme and the sleep timer.\n\nThe source code of Phonograph is available on GitHub. You are welcome to compile the pro version yourself for free. However, if you want to support the development and receive updates through the Play Store, consider purchasing Phonograph Pro.\nThank you,\nKarim"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:padding="8dp">
+
+                <Button
+                    android:id="@+id/restore_button"
+                    style="@style/Base.Widget.AppCompat.Button.Borderless"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/restore" />
+
+                <Button
+                    android:id="@+id/purchase_button"
+                    style="@style/Base.Widget.AppCompat.Button.Borderless.Colored"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="8dp"
+                    android:layout_marginStart="8dp"
+                    android:text="@string/purchase"
+                    android:textColor="@color/md_green_600" />
+
+
+            </LinearLayout>
+
+
+        </LinearLayout>
+
+    </android.support.v7.widget.CardView>
+
+</LinearLayout>

app/src/main/res/values-land/dimens.xml

@@ -2,4 +2,7 @@
     <dimen name="title_view_height">56dp</dimen>
 
     <dimen name="header_image_height">180dp</dimen>
+
+    <dimen name="card_on_app_bar_side_padding">72dp</dimen>
+
 </resources>

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

@@ -58,4 +58,6 @@ http://developer.android.com/guide/topics/appwidgets/index.html#CreatingLayout
     <dimen name="app_widget_card_buttons_width">128dp</dimen>
     <dimen name="app_widget_card_radius">2dp</dimen>
 
+    <dimen name="card_on_app_bar_side_padding">8dp</dimen>
+
 </resources>

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

@@ -197,7 +197,7 @@
     <string name="support_development">Support development</string>
     <string name="buy_pro">Buy Phonograph Pro</string>
     <string name="thank_you">Thank you!</string>
-    <string name="restored_previous_purchases_please_restart">Restored previous purchases. Please restart the app to make use of all features.</string>
+    <string name="restored_previous_purchase_please_restart">Restored previous purchase. Please restart the app to make use of all features.</string>
     <string name="version">Version</string>
     <string name="author">Author</string>
     <string name="write_an_email">Write an email</string>
@@ -279,4 +279,10 @@
     <string name="black_theme_is_a_pro_feature">The black theme is Phonograph Pro feature.</string>
     <string name="sleep_timer_is_a_pro_feature">Sleep timer is a Phonograph Pro feature</string>
     <string name="folder_view_is_a_pro_feature">Folder view is a Phonograph Pro feature.</string>
+    <string name="restore_purchase">Restore purchase</string>
+    <string name="restoring_purchase">Restoring purchase…</string>
+    <string name="could_not_restore_purchase">Could not restore purchase.</string>
+    <string name="purchase">Purchase</string>
+    <string name="restore">Restore</string>
+    <string name="no_purchase_found">No purchase found.</string>
 </resources>