ads + billing + fix for MiOne devices' tabs

res/values-ru/text_about.xml

@@ -144,7 +144,7 @@
 		так как приложение стало довольно большим и сложным.\n
 		Если вы хотите поддержать проект и избавиться от рекламы, вы можете купить специальную опцию в настройках приложения,\n
 		если вы не хотите или не можете этого сделать - вы всё равно можете отблагодарить автора программы по почте: se.solovyev@gmail.com, высоко оценить приложение на андроид.маркете\n
-		или помочь в переводе приложения на свой роной язык.
+		или помочь в переводе приложения на свой родной язык.
 	</string>
 
 </resources>

src/main/java/org/solovyev/android/AndroidUtils.java

@@ -10,6 +10,8 @@ import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.os.Build;
+import android.util.Log;
 import android.view.Gravity;
 import android.view.View;
 import android.view.ViewGroup;
@@ -35,6 +37,7 @@ public final class AndroidUtils {
 	}
 
 	public static void centerAndWrapTabsFor(@NotNull TabHost tabHost) {
+		if (allowCenterAndWrappingTabs()) {
 			int tabCount = tabHost.getTabWidget().getTabCount();
 			for (int i = 0; i < tabCount; i++) {
 				final View view = tabHost.getTabWidget().getChildTabViewAt(i);
@@ -61,6 +64,23 @@ public final class AndroidUtils {
 				}
 			}
 		}
+	}
+
+	private static boolean allowCenterAndWrappingTabs() {
+  		boolean result = true;
+
+		String deviceModel = Build.MODEL;
+		if (deviceModel != null) {
+			deviceModel = deviceModel.toUpperCase();
+			if (deviceModel.contains("M1") || deviceModel.contains("MIONE") || deviceModel.contains("MI-ONE")) {
+				// Xiaomi Phone MiOne => do not allow to center and wrap tabs
+				result = false;
+				Log.i(AndroidUtils.class.getName(), "Device model doesn't support center and wrap of tabs: " + Build.MODEL);
+			}
+		}
+
+		return result;
+	}
 
 	public static void addTab(@NotNull Context context,
 							  @NotNull TabHost tabHost,

src/main/java/org/solovyev/android/calculator/CalculatorActivity.java

@@ -26,6 +26,8 @@ import android.widget.TextView;
 import com.google.ads.AdView;
 import jscl.AngleUnit;
 import jscl.NumeralBase;
+import net.robotmedia.billing.BillingController;
+import net.robotmedia.billing.IBillingObserver;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.solovyev.android.AndroidUtils;
@@ -53,6 +55,9 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 
 	private static final int HVGA_WIDTH_PIXELS = 320;
 
+	@Nullable
+	private IBillingObserver billingObserver;
+
 	public static class Preferences {
 		@NotNull
 		private static final String APP_VERSION_P_KEY = "application.version";
@@ -377,6 +382,10 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 	private synchronized void firstTimeInit(@NotNull SharedPreferences preferences) {
 		if (!initialized) {
 
+			billingObserver = new CalculatorBillingObserver(this);
+			BillingController.registerObserver(billingObserver);
+			BillingController.checkBillingSupported(this);
+
 			final int savedVersion = Preferences.appVersion.getPreference(preferences);
 
 			final int appVersion = AndroidUtils.getAppVersionCode(this, CalculatorActivity.class.getPackage().getName());
@@ -627,6 +636,11 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 		if ( adView != null ) {
 			adView.destroy();
 		}
+
+		if (billingObserver !=  null) {
+			BillingController.unregisterObserver(billingObserver);
+		}
+
 		super.onDestroy();
 	}
 

src/main/java/org/solovyev/android/calculator/CalculatorApplication.java

@@ -36,20 +36,24 @@ public class CalculatorApplication extends android.app.Application {
 		return instance;
 	}
 
-	public static boolean isAdFreeApprox(@NotNull Context context) {
+	private static boolean isAdFreePurchased(@NotNull Context context) {
 		return BillingController.isPurchased(context.getApplicationContext(), AD_FREE_PRODUCT_ID);
 	}
 
+	private static boolean transactionsRestored = false;
+
 	public static boolean isAdFree(@NotNull Context context) {
 		// check if user already bought this product
-		boolean purchased = isAdFreeApprox(context);
+		boolean purchased = isAdFreePurchased(context);
-		if (!purchased) {
+		if (!purchased && !transactionsRestored) {
 			// we must to restore all transactions done by user to guarantee that product was purchased or not
 			BillingController.restoreTransactions(context);
 
+			transactionsRestored = true;
+
 			// todo serso: may be call net.robotmedia.billing.BillingController.restoreTransactions() always before first check and get rid of second check
 			// check the billing one more time
-			purchased = isAdFreeApprox(context);
+			purchased = isAdFreePurchased(context);
 		}
 		return purchased;
 	}
@@ -62,9 +66,8 @@ public class CalculatorApplication extends android.app.Application {
 	@Nullable
 	public static AdView inflateAd(@NotNull Activity activity, int parentViewId) {
 		AdView result = null;
-		if ( !isAdFreeApprox(activity) ) {
+		if ( !isAdFree(activity) ) {
 			Log.d(activity.getClass().getName(), "Application is not ad free - inflating ad!");
-			//final List<String> keywords = Arrays.asList("math", "mathematics", "finance", "physics", "dynamics");
 			final List<String> keywords = Collections.emptyList();
 			result = AndroidUtils.createAndInflateAdView(activity, ADMOB_USER_ID, parentViewId, keywords);
 		} else {
@@ -78,6 +81,7 @@ public class CalculatorApplication extends android.app.Application {
 	public void onCreate() {
 		super.onCreate();
 
+		//BillingController.setDebug(true);
 		BillingController.setConfiguration(new BillingController.IConfiguration() {
 
 			@Override
@@ -90,7 +94,5 @@ public class CalculatorApplication extends android.app.Application {
 				return CalculatorSecurity.getPK();
 			}
 		});
-
-		BillingController.checkBillingSupported(this);
 	}
 }

src/main/java/org/solovyev/android/calculator/CalculatorBillingObserver.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2009-2012. Created by serso aka se.solovyev.
+ * For more information, please, contact se.solovyev@gmail.com
+ * or visit http://se.solovyev.org
+ */
+
+package org.solovyev.android.calculator;
+
+import android.app.Activity;
+import net.robotmedia.billing.BillingRequest;
+import net.robotmedia.billing.helper.AbstractBillingObserver;
+import net.robotmedia.billing.model.Transaction;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * User: serso
+ * Date: 1/5/12
+ * Time: 4:51 PM
+ */
+public class CalculatorBillingObserver extends AbstractBillingObserver {
+
+	public CalculatorBillingObserver(@NotNull Activity activity) {
+		super(activity);
+	}
+
+	@Override
+	public void onBillingChecked(boolean supported) {
+		// do nothing
+	}
+
+	@Override
+	public void onPurchaseStateChanged(String itemId, Transaction.PurchaseState state) {
+		// do nothing
+	}
+
+	@Override
+	public void onRequestPurchaseResponse(String itemId, BillingRequest.ResponseCode response) {
+		// do nothing
+	}
+}

src/main/java/org/solovyev/android/calculator/CalculatorPreferencesActivity.java

@@ -6,11 +6,16 @@
 package org.solovyev.android.calculator;
 
 import android.app.AlertDialog;
+import android.app.PendingIntent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
+import android.util.Log;
 import net.robotmedia.billing.BillingController;
+import net.robotmedia.billing.BillingRequest;
+import net.robotmedia.billing.IBillingObserver;
+import net.robotmedia.billing.model.Transaction;
 import org.solovyev.android.calculator.model.CalculatorEngine;
 import org.solovyev.android.view.widgets.VibratorContainer;
 
@@ -19,7 +24,7 @@ import org.solovyev.android.view.widgets.VibratorContainer;
  * Date: 7/16/11
  * Time: 6:37 PM
  */
-public class CalculatorPreferencesActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
+public class CalculatorPreferencesActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener, IBillingObserver {
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
@@ -35,10 +40,13 @@ public class CalculatorPreferencesActivity extends PreferenceActivity implements
 
 					// check billing availability
 					if (BillingController.checkBillingSupported(CalculatorPreferencesActivity.this) != BillingController.BillingStatus.SUPPORTED) {
+						Log.d(CalculatorPreferencesActivity.class.getName(), "Billing is not supported - warn user!");
 						// warn about not supported billing
 						new AlertDialog.Builder(CalculatorPreferencesActivity.this).setTitle(R.string.c_error).setMessage(R.string.c_billing_error).create().show();
 					} else {
+						Log.d(CalculatorPreferencesActivity.class.getName(), "Billing is supported - continue!");
 						if (!CalculatorApplication.isAdFree(CalculatorPreferencesActivity.this)) {
+							Log.d(CalculatorPreferencesActivity.class.getName(), "Item not purchased - try to purchase!");
 							// not purchased => show purchase window for user
 							BillingController.requestPurchase(CalculatorPreferencesActivity.this, CalculatorApplication.AD_FREE_PRODUCT_ID, true);
 						}
@@ -51,18 +59,67 @@ public class CalculatorPreferencesActivity extends PreferenceActivity implements
 			addFreePreference.setEnabled(false);
 		}
 
+		BillingController.registerObserver(this);
+
 		final SharedPreferences preferences = getPreferenceManager().getSharedPreferences();
 		preferences.registerOnSharedPreferenceChangeListener(this);
 		onSharedPreferenceChanged(preferences, CalculatorEngine.Preferences.roundResult.getKey());
 		onSharedPreferenceChanged(preferences, VibratorContainer.HAPTIC_FEEDBACK_P_KEY);
 	}
 
+	@Override
+	protected void onDestroy() {
+		BillingController.unregisterObserver(this);
+		super.onDestroy();
+	}
+
 	@Override
 	public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
 		if (CalculatorEngine.Preferences.roundResult.getKey().equals(key)) {
-			findPreference(CalculatorEngine.Preferences.roundResult.getKey()).setEnabled(preferences.getBoolean(key, CalculatorEngine.Preferences.roundResult.getDefaultValue()));
+			findPreference(CalculatorEngine.Preferences.precision.getKey()).setEnabled(preferences.getBoolean(key, CalculatorEngine.Preferences.roundResult.getDefaultValue()));
 		} else if (VibratorContainer.HAPTIC_FEEDBACK_P_KEY.equals(key)) {
 			findPreference(VibratorContainer.HAPTIC_FEEDBACK_DURATION_P_KEY).setEnabled(preferences.getBoolean(key, VibratorContainer.HAPTIC_FEEDBACK_DEFAULT));
 		}
 	}
+
+	@Override
+	public void onBillingChecked(boolean supported) {
+		// do nothing
+	}
+
+	@Override
+	public void onPurchaseIntent(String itemId, PendingIntent purchaseIntent) {
+		// do nothing
+	}
+
+	@Override
+	public void onPurchaseStateChanged(String itemId, Transaction.PurchaseState state) {
+		if (CalculatorApplication.AD_FREE_PRODUCT_ID.equals(itemId)) {
+			final Preference addFreePreference = findPreference(CalculatorApplication.AD_FREE_P_KEY);
+			if (addFreePreference != null) {
+				switch (state) {
+					case PURCHASED:
+						addFreePreference.setEnabled(false);
+						break;
+					case CANCELLED:
+						addFreePreference.setEnabled(true);
+						break;
+					case REFUNDED:
+						addFreePreference.setEnabled(true);
+						break;
+				}
+			} else {
+			}
+		}
+	}
+
+	@Override
+	public void onRequestPurchaseResponse(String itemId, BillingRequest.ResponseCode response) {
+		// do nothing
+	}
+
+	@Override
+	public void onTransactionsRestored() {
+		// do nothing
+	}
 }