Async loading of homepage, delegate IOThread responsibility to BrowserApp class

app/src/main/java/acr/browser/lightning/activity/BrowserActivity.java

@@ -1342,7 +1342,7 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
         if (UrlUtils.isSpecialUrl(url)) {
             return;
         }
-        BrowserApp.getHistoryDatabase().getIOThread().execute(new Runnable() {
+        BrowserApp.getIOThread().execute(new Runnable() {
             @Override
             public void run() {
                 try {
@@ -1406,7 +1406,7 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
      */
     private void openHistory() {
         // use a thread so that history retrieval doesn't block the UI
-        BrowserApp.getHistoryDatabase().getIOThread().execute(new Runnable() {
+        BrowserApp.getIOThread().execute(new Runnable() {
 
             @Override
             public void run() {

app/src/main/java/acr/browser/lightning/app/BrowserApp.java

@@ -6,6 +6,9 @@ import android.content.Context;
 import com.squareup.leakcanary.LeakCanary;
 import com.squareup.otto.Bus;
 
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
 import acr.browser.lightning.constant.BookmarkPage;
 import acr.browser.lightning.database.HistoryDatabase;
 import acr.browser.lightning.preference.PreferenceManager;
@@ -14,6 +17,7 @@ public class BrowserApp extends Application {
 
     private static BrowserApp sInstance;
     private static AppComponent appComponent;
+    private static Executor mIOThread = Executors.newSingleThreadExecutor();
 
     @Override
     public void onCreate() {
@@ -39,6 +43,10 @@ public class BrowserApp extends Application {
         return appComponent.getHistoryDatabase();
     }
 
+    public static Executor getIOThread() {
+        return mIOThread;
+    }
+
     public static PreferenceManager getPreferenceManager() {
         return appComponent.getPreferenceManager();
     }

app/src/main/java/acr/browser/lightning/database/HistoryDatabase.java

@@ -42,8 +42,6 @@ public class HistoryDatabase extends SQLiteOpenHelper {
 
     private SQLiteDatabase mDatabase;
 
-    private Executor mIOThread = Executors.newSingleThreadExecutor();
-
     @Inject
     public HistoryDatabase(Context context) {
         super(context.getApplicationContext(), DATABASE_NAME, null, DATABASE_VERSION);
@@ -78,10 +76,6 @@ public class HistoryDatabase extends SQLiteOpenHelper {
         return mDatabase == null || !mDatabase.isOpen();
     }
 
-    public Executor getIOThread() {
-        return mIOThread;
-    }
-
     @Override
     public synchronized void close() {
         if (mDatabase != null) {

app/src/main/java/acr/browser/lightning/fragment/PrivacySettingsFragment.java

@@ -149,9 +149,7 @@ public class PrivacySettingsFragment extends LightningPreferenceFragment impleme
                         new DialogInterface.OnClickListener() {
                             @Override
                             public void onClick(DialogInterface arg0, int arg1) {
-                                BrowserApp.getHistoryDatabase()
-                                        .getIOThread()
-                                        .execute(new Runnable() {
+                                BrowserApp.getIOThread().execute(new Runnable() {
                                     @Override
                                     public void run() {
                                         clearHistory();

app/src/main/java/acr/browser/lightning/view/LightningView.java

@@ -147,13 +147,32 @@ public class LightningView {
         if (mWebView == null) {
             return;
         }
-        if (mHomepage.startsWith("about:home")) {
-            mWebView.loadUrl(StartPage.getHomepage(mActivity), mRequestHeaders);
-        } else if (mHomepage.startsWith("about:bookmarks")) {
+        switch (mHomepage) {
+            case "about:home":
+                loadStartpage();
+                break;
+            case "about:bookmarks":
                 loadBookmarkpage();
-        } else {
+                break;
+            default:
                 mWebView.loadUrl(mHomepage, mRequestHeaders);
+                break;
+        }
+    }
+
+    private void loadStartpage() {
+        BrowserApp.getIOThread().execute(new Runnable() {
+            @Override
+            public void run() {
+                final String homepage = StartPage.getHomepage(mActivity);
+                mActivity.runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        mWebView.loadUrl(homepage, mRequestHeaders);
                     }
+                });
+            }
+        });
     }
 
     /**
@@ -162,6 +181,9 @@ public class LightningView {
     public void loadBookmarkpage() {
         if (mWebView == null)
             return;
+        BrowserApp.getIOThread().execute(new Runnable() {
+            @Override
+            public void run() {
                 Bitmap folderIcon = ThemeUtils.getThemedBitmap(mActivity, R.drawable.ic_folder, false);
                 FileOutputStream outputStream = null;
                 File image = new File(mActivity.getCacheDir(), "folder.png");
@@ -174,11 +196,17 @@ public class LightningView {
                 } finally {
                     Utils.close(outputStream);
                 }
-        File bookmarkWebPage = new File(mActivity.getFilesDir(), BookmarkPage.FILENAME);
+                final File bookmarkWebPage = new File(mActivity.getFilesDir(), BookmarkPage.FILENAME);
 
                 BrowserApp.getBookmarkPage().buildBookmarkPage(null);
+                mActivity.runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
                         mWebView.loadUrl(Constants.FILE + bookmarkWebPage, mRequestHeaders);
-
+                    }
+                });
+            }
+        });
     }
 
     /**