Implemented sub forums.

When the user selects a category, the sub forums are now displayed to
them.

Signed-off-by: Ricky Barrette <rickbarrette@gmail.com>

OSJ Forum/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest package="com.RickBarrette.osj.forum"
-    android:versionCode="30"
+    android:versionCode="41"
     android:versionName="1.0" xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto">
 
     <uses-sdk

OSJ Forum/src/com/RickBarrette/osj/forum/ForumDetailFragment.java

@@ -20,19 +20,27 @@
 package com.RickBarrette.osj.forum;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import android.support.v4.app.ListFragment;
-import android.view.LayoutInflater;
 import android.view.View;
-import android.view.ViewGroup;
+import android.widget.AbsListView;
-import android.widget.TextView;
+import android.widget.AdapterView;
+import android.widget.ListView;
 
-import com.RickBarrette.osj.forum.dummy.DummyContent;
+import com.RickBarrette.osj.forum.content.ForumContent;
+import com.RickBarrette.osj.forum.content.ForumContent.ForumItem;
+import com.RickBarrette.osj.forum.content.SubForumAdapter;
 
-public class ForumDetailFragment extends Fragment {
+/**
+ * This fragment will be used to display information about the forum
+ * @author ricky barrette
+ */
+public class ForumDetailFragment extends ListFragment {
 
 	public static final String ARG_ITEM_ID = "item_id";
+	private int mActivatedPosition = ListView.INVALID_POSITION;
+	private static final String STATE_ACTIVATED_POSITION = "activated_position";
 
-	DummyContent.DummyItem mItem;
+	ForumItem mItem;
 
 	public ForumDetailFragment() {
 	}
@@ -41,14 +49,36 @@ public class ForumDetailFragment extends Fragment {
 	public void onCreate(final Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		if (getArguments().containsKey(ARG_ITEM_ID))
-			mItem = DummyContent.ITEM_MAP.get(getArguments().getString(ARG_ITEM_ID));
+			mItem = ForumContent.ITEM_MAP.get(getArguments().getString(ARG_ITEM_ID));
+		
+		if(mItem != null)
+			this.setListAdapter(new SubForumAdapter(getActivity(), Integer.parseInt(getArguments().getString(ARG_ITEM_ID))));
 	}
 	
 	@Override
-	public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) {
+	public void onSaveInstanceState(final Bundle outState) {
-		final View rootView = inflater.inflate(R.layout.fragment_forum_detail, container, false);
+		super.onSaveInstanceState(outState);
-		if (mItem != null)
+		if (mActivatedPosition != AdapterView.INVALID_POSITION)
-			((TextView) rootView.findViewById(R.id.forum_detail)).setText(mItem.content);
+			outState.putInt(STATE_ACTIVATED_POSITION, mActivatedPosition);
-		return rootView;
+	}
+
+	@Override
+	public void onViewCreated(final View view, final Bundle savedInstanceState) {
+		super.onViewCreated(view, savedInstanceState);
+		if (savedInstanceState != null && savedInstanceState.containsKey(STATE_ACTIVATED_POSITION))
+			setActivatedPosition(savedInstanceState.getInt(STATE_ACTIVATED_POSITION));
+	}
+
+	public void setActivatedPosition(final int position) {
+		if (position == AdapterView.INVALID_POSITION)
+			getListView().setItemChecked(mActivatedPosition, false);
+		else
+			getListView().setItemChecked(position, true);
+
+		mActivatedPosition = position;
+	}
+
+	public void setActivateOnItemClick(final boolean activateOnItemClick) {
+		getListView().setChoiceMode(activateOnItemClick ? AbsListView.CHOICE_MODE_SINGLE : AbsListView.CHOICE_MODE_NONE);
 	}
 }

OSJ Forum/src/com/RickBarrette/osj/forum/ForumListFragment.java

@@ -92,7 +92,7 @@ public class ForumListFragment extends ListFragment {
 	@Override
 	public void onListItemClick(final ListView listView, final View view, final int position, final long id) {
 		super.onListItemClick(listView, view, position, id);
-		mCallbacks.onItemSelected(DummyContent.ITEMS.get(position).id);
+		mCallbacks.onItemSelected(ForumContent.ITEMS.get(position).id);
 	}
 
 	@Override

OSJ Forum/src/com/RickBarrette/osj/forum/content/ForumAdapter.java

@@ -24,22 +24,19 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.BaseAdapter;
-import android.widget.CheckBox;
 import android.widget.TextView;
 
 import com.RickBarrette.osj.forum.R;
 import com.RickBarrette.osj.forum.content.ForumContent.ForumItem;
 
 /**
- * 
+ * This adapter will be used to populate a list view with forum entries
  * @author ricky barrette
  */
 public class ForumAdapter extends BaseAdapter {
 	
 	class ViewHolder {
 		TextView title;
-		TextView description;
-		CheckBox checkbox;
 	}
 
 	private LayoutInflater mInflater;

OSJ Forum/src/com/RickBarrette/osj/forum/content/ForumContent.java

@@ -51,6 +51,10 @@ public class ForumContent {
 		public String toString() {
 			return (String) content.get("forum_name");
 		}
+		
+		public Object[] getChildren(){
+			return (Object[]) this.content.get("child");
+		}
 	}
 
 	public static List<ForumItem> ITEMS = new ArrayList<ForumItem>();

OSJ Forum/src/com/RickBarrette/osj/forum/content/SubForumAdapter.java

@@ -0,0 +1,121 @@
+/**
+ * SubForumAdapter.java
+ * @date Aug 30, 2012
+ * @author ricky barrette
+ * 
+ * Copyright 2012 Richard Barrette 
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. 
+ * You may obtain a copy of the License at 
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0 
+ * 
+ * Unless required by applicable law or agreed to in writing, software 
+ * distributed under the License is distributed on an "AS IS" BASIS, 
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+ * See the License for the specific language governing permissions and 
+ * limitations under the License
+ */
+package com.RickBarrette.osj.forum.content;
+
+import java.util.HashMap;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.TextView;
+
+import com.RickBarrette.osj.forum.R;
+
+/**
+ * 
+ * @author ricky barrette
+ */
+public class SubForumAdapter extends BaseAdapter {
+	
+	class ViewHolder {
+		TextView title;
+	}
+
+	private LayoutInflater mInflater;
+	private Object[] mSubForums;
+
+	/**
+	 * 
+	 * @author ricky barrette
+	 */
+	public SubForumAdapter(Context context, int position) {
+		mInflater = LayoutInflater.from(context);
+		mSubForums = ForumContent.ITEMS.get(position).getChildren();
+	}
+
+	/* (non-Javadoc)
+	 * @see android.widget.Adapter#getCount()
+	 */
+	@Override
+	public int getCount() {
+		if(mSubForums != null)
+			return mSubForums.length;
+		else
+			return 0;
+	}
+
+	/* (non-Javadoc)
+	 * @see android.widget.Adapter#getItem(int)
+	 */
+	@Override
+	public HashMap<?,?> getItem(int position) {
+		return (HashMap<?,?>) mSubForums[position];
+	}
+
+	/* (non-Javadoc)
+	 * @see android.widget.Adapter#getItemId(int)
+	 */
+	@Override
+	public long getItemId(int position) {
+		return position;
+	}
+
+	/* (non-Javadoc)
+	 * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup)
+	 */
+	@Override
+	public View getView(int position, View convertView, ViewGroup parent) {
+		// A ViewHolder keeps references to children views to avoid unnecessary
+		// calls to findViewById() on each row.
+		ViewHolder holder;
+
+		// When convertView is not null, we can reuse it directly, there is no
+		// need
+		// to reinflate it. We only inflate a new View when the convertView
+		// supplied
+		// by ListView is null.
+		if (convertView == null) {
+			convertView = mInflater.inflate(R.layout.forum_item, null);
+
+			// Creates a ViewHolder and store references to the two children
+			// views
+			// we want to bind data to.
+			holder = new ViewHolder();
+			holder.title = (TextView) convertView.findViewById(R.id.textView1);
+
+			convertView.setTag(holder);
+		} else
+			// Get the ViewHolder back to get fast access to the TextView
+			// and the ImageView.
+			holder = (ViewHolder) convertView.getTag();
+
+
+		/*
+		 * Bind the data efficiently with the holder. Remember that you should
+		 * always call setChecked() after calling setOnCheckedChangedListener.
+		 * This will prevent the list from changing the values on you.
+		 */
+		holder.title.setText(new String((byte[]) getItem(position).get("forum_name")));
+		return convertView;
+	}
+
+}