Partially implements task #81.

One thing before finishing this task is:
There is still a delay before show the "if load" alert dialog, not sure
what costs this time.
Keep thinking...
----------------------
Another opinion is: we should always try to load automatically, if the
performance is not good, then fix the performance bug. A possible
solution might be using adaptor tech for the gallery. Will investigate
later.
--------------------------
Now, just add a switch flag in AppConfig class.

src/com/intalker/borrow/HomeActivity.java

@@ -22,6 +22,8 @@
 import com.intalker.borrow.util.StorageUtil;
 import android.os.Bundle;
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.graphics.Color;
 import android.view.Menu;
@@ -68,15 +70,15 @@ public void onCreate(Bundle savedInstanceState) {
 		StorageUtil.initialize();
 		AppData.getInstance().initialize();
 		DensityAdaptor.init(this);
-		StorageUtil.loadCachedBooks();
+		if (!AppConfig.disableAutoLoadCache) {
+			StorageUtil.loadCachedBooks();
+		}
 		CloudAPI.CloudToken = "";
 
 		setContentView(initializeWithSlidingStyle());
 		this.mSlidingMenu.invalidate();
 
-		//Continue to investigate this Async task later
-//		InitialCachedDataAsyncTask initCachedDataTask = new InitialCachedDataAsyncTask();
-//		initCachedDataTask.execute();
+		//enable later
 		tryAutoLogin();
 	}
 
@@ -130,6 +132,32 @@ private void doAfterGetUserInfoByToken(int returnCode) {
 		if (CloudAPI.isSuccessful(this, returnCode)) {
 			mBookGallery.updateTopPanel(UserInfo.getCurLoggedinUser());
 			mSocialPanel.getFriendsView().refreshList();
+
+			if (AppConfig.disableAutoLoadCache) {
+				AlertDialog alertDialog = new AlertDialog.Builder(this)
+						.setTitle("test")
+						.setMessage("msg")
+						.setIcon(R.drawable.question)
+						.setPositiveButton("OK",
+								new DialogInterface.OnClickListener() {
+
+									@Override
+									public void onClick(DialogInterface dialog,
+											int which) {
+										InitialCachedDataAsyncTask initCachedDataTask = new InitialCachedDataAsyncTask();
+										initCachedDataTask.execute();
+									}
+								})
+						.setNegativeButton("cancel",
+								new DialogInterface.OnClickListener() {
+
+									@Override
+									public void onClick(DialogInterface dialog,
+											int which) {
+									}
+								}).create();
+				alertDialog.show();
+			}
 		}
 	}
 

src/com/intalker/borrow/config/AppConfig.java

@@ -3,4 +3,5 @@
 public class AppConfig {
 public final static boolean isDebugMode = true;
 public final static boolean useSQLiteForCache = true;
+public final static boolean disableAutoLoadCache = false;
 }

src/com/intalker/borrow/data/InitialCachedDataAsyncTask.java

@@ -4,6 +4,7 @@
 import com.intalker.borrow.cloud.CloudAPI;
 import com.intalker.borrow.cloud.CloudUtility;
 import com.intalker.borrow.cloud.CloudAPIAsyncTask.ICloudAPITaskListener;
+import com.intalker.borrow.ui.control.TransparentProgressDialog;
 import com.intalker.borrow.util.DBUtil;
 import com.intalker.borrow.util.StorageUtil;
 
@@ -12,6 +13,8 @@
 
 public class InitialCachedDataAsyncTask extends AsyncTask<Void, Void, Void> {
 
+	private TransparentProgressDialog mProgressDialog = null;
+
 	@Override
 	protected Void doInBackground(Void... params) {
 		StorageUtil.loadCachedBooks();
@@ -32,6 +35,7 @@ public void onFinish(int returnCode) {
 						app.getBookGallery().updateTopPanel(UserInfo.getCurLoggedinUser());
 						app.getSocialPanel().getFriendsView().refreshList();
 					}
+					mProgressDialog.dismiss();
 				}
 
 			});
@@ -42,6 +46,10 @@ public void onFinish(int returnCode) {
 	protected void onPreExecute() {
 		// TODO Auto-generated method stub
 		super.onPreExecute();
+		mProgressDialog = new TransparentProgressDialog(HomeActivity.getApp(), false);
+		mProgressDialog.setCancelable(false);
+		mProgressDialog.setMessage("Loading");
+		mProgressDialog.show();
 	}
 
 }

src/com/intalker/borrow/ui/book/BookGallery.java

@@ -15,7 +15,6 @@
 import com.intalker.borrow.util.DeviceUtil;
 import com.intalker.borrow.util.LayoutUtil;
 import com.intalker.borrow.util.ScanUtil;
-
 import android.content.Context;
 import android.graphics.Color;
 import android.view.MotionEvent;