Implement layout system with ActionBar and ViewPager.

5 files changed, 250 insertions, 11 deletions

diff --git a/SmileEssenceTest/src/net/lacolaco/smileessence/activity/MainActivityTest.java b/SmileEssenceTest/src/net/lacolaco/smileessence/activity/MainActivityTest.java
index ebec2270..908c0250 100644
--- a/SmileEssenceTest/src/net/lacolaco/smileessence/activity/MainActivityTest.java
+++ b/SmileEssenceTest/src/net/lacolaco/smileessence/activity/MainActivityTest.java
@@ -94,4 +94,14 @@ public class MainActivityTest extends ActivityInstrumentationTestCase2<MainActiv
     {
         assertNotNull(getActivity().getActionBar());
     }
+
+    public void testGetViewPager() throws Exception
+    {
+        assertNotNull(getActivity().getViewPager());
+    }
+
+    public void testGetPagerAdapter() throws Exception
+    {
+        assertNotNull(getActivity().getPagerAdapter());
+    }
 }
diff --git a/res/layout/main.xml b/res/layout/main.xml
index d955476f..8376458f 100644
--- a/res/layout/main.xml
+++ b/res/layout/main.xml
@@ -23,16 +23,13 @@
   ~ SOFTWARE.
   -->
 
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-              android:orientation="vertical"
-              android:layout_width="fill_parent"
-              android:layout_height="fill_parent"
-    >
+<android.support.v4.view.ViewPager
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/viewPager"
+    android:orientation="vertical"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    tools:context=".MainActivity"/>
 
-    <TextView
-        android:layout_width="fill_parent"
-        android:layout_height="wrap_content"
-        android:text="Hello World, MainActivity"
-        />
-</LinearLayout>
 
diff --git a/src/net/lacolaco/smileessence/activity/MainActivity.java b/src/net/lacolaco/smileessence/activity/MainActivity.java
index cbc7fdaa..e2412974 100644
--- a/src/net/lacolaco/smileessence/activity/MainActivity.java
+++ b/src/net/lacolaco/smileessence/activity/MainActivity.java
@@ -24,22 +24,30 @@
 
 package net.lacolaco.smileessence.activity;
 
+import android.app.ActionBar;
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
 import net.lacolaco.smileessence.R;
 import net.lacolaco.smileessence.preference.PreferenceHelper;
 import net.lacolaco.smileessence.property.PropertyHelper;
 import net.lacolaco.smileessence.resource.ResourceHelper;
+import net.lacolaco.smileessence.view.adapter.TextFragment;
+import net.lacolaco.smileessence.viewmodel.PageListAdapter;
 
 import java.io.IOException;
 
 public class MainActivity extends Activity
 {
 
+    private static final String STATE_PAGE = "page";
     private ResourceHelper resourceHelper;
     private PreferenceHelper preferenceHelper;
     private PropertyHelper propertyHelper;
+    private ViewPager viewPager;
+    private PageListAdapter pagerAdapter;
 
     /**
      * Called when the activity is first created.
@@ -49,6 +57,8 @@ public class MainActivity extends Activity
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
+        viewPager = (ViewPager) findViewById(R.id.viewPager);
+        initializeViewPager(savedInstanceState);
         try
         {
             setupHelpers();
@@ -60,6 +70,30 @@ public class MainActivity extends Activity
         }
     }
 
+    private void initializeViewPager(Bundle savedInstanceState)
+    {
+        ActionBar bar = getActionBar();
+        bar.setTitle(null);
+        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
+        pagerAdapter = new PageListAdapter(this, viewPager);
+        Bundle args = new Bundle();
+        args.putString(TextFragment.ARG_TEXT, "test");
+        pagerAdapter.addTab("Passion", TextFragment.class, args);
+        pagerAdapter.addTab("Star", TextFragment.class, args);
+        pagerAdapter.addTab("Stream", TextFragment.class, args);
+        if(savedInstanceState != null)
+        {
+            bar.setSelectedNavigationItem(savedInstanceState.getInt(STATE_PAGE, 0));
+        }
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState)
+    {
+        super.onSaveInstanceState(outState);
+        outState.putInt(STATE_PAGE, getActionBar().getSelectedNavigationIndex());
+    }
+
     @Override
     protected void onResume()
     {
@@ -126,4 +160,14 @@ public class MainActivity extends Activity
     {
         return propertyHelper;
     }
+
+    public ViewPager getViewPager()
+    {
+        return viewPager;
+    }
+
+    public PagerAdapter getPagerAdapter()
+    {
+        return pagerAdapter;
+    }
 }
diff --git a/src/net/lacolaco/smileessence/view/adapter/TextFragment.java b/src/net/lacolaco/smileessence/view/adapter/TextFragment.java
new file mode 100644
index 00000000..d6abb466
--- /dev/null
+++ b/src/net/lacolaco/smileessence/view/adapter/TextFragment.java
@@ -0,0 +1,55 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2012-2014 lacolaco.net
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.lacolaco.smileessence.view.adapter;
+
+import android.app.Fragment;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+public class TextFragment extends Fragment
+{
+
+    public static final String ARG_TEXT = "text";
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
+    {
+        TextView textView = new TextView(getActivity());
+        Bundle args = getArguments();
+        if(args != null)
+        {
+            String text = args.getString(ARG_TEXT);
+            if(!TextUtils.isEmpty(text))
+            {
+                textView.setText(text);
+            }
+        }
+        return textView;
+    }
+}
diff --git a/src/net/lacolaco/smileessence/viewmodel/PageListAdapter.java b/src/net/lacolaco/smileessence/viewmodel/PageListAdapter.java
new file mode 100644
index 00000000..df019980
--- /dev/null
+++ b/src/net/lacolaco/smileessence/viewmodel/PageListAdapter.java
@@ -0,0 +1,133 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2012-2014 lacolaco.net
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.lacolaco.smileessence.viewmodel;
+
+import android.app.ActionBar;
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v13.app.FragmentStatePagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.widget.ArrayAdapter;
+
+import java.util.ArrayList;
+
+public class PageListAdapter extends FragmentStatePagerAdapter implements ViewPager.OnPageChangeListener, ActionBar.OnNavigationListener
+{
+
+    private final Context context;
+    private final ActionBar actionBar;
+    private final ViewPager viewPager;
+    private final ArrayList<PageInfo> pages = new ArrayList<>();
+
+    static final class PageInfo
+    {
+
+        private final String name;
+        private final Class<?> fragmentClass;
+        private final Bundle args;
+
+        PageInfo(String name, Class<?> clss, Bundle args)
+        {
+            this.name = name;
+            this.fragmentClass = clss;
+            this.args = args;
+        }
+    }
+
+    public PageListAdapter(Activity activity, ViewPager viewPager)
+    {
+        super(activity.getFragmentManager());
+        this.context = activity;
+        this.actionBar = activity.getActionBar();
+        this.viewPager = viewPager;
+        viewPager.setAdapter(this);
+        viewPager.setOnPageChangeListener(this);
+    }
+
+    /**
+     * Add new tab and new page
+     *
+     * @param name Page name
+     * @param clss Fragment class
+     * @param args Bundle for Fragment instantiate
+     */
+    public void addTab(String name, Class<?> clss, Bundle args)
+    {
+        PageInfo info = new PageInfo(name, clss, args);
+        pages.add(info);
+        refreshListNavigation();
+        notifyDataSetChanged();
+    }
+
+    private void refreshListNavigation()
+    {
+        ArrayList<String> itemList = new ArrayList<>();
+        for(PageInfo page : pages)
+        {
+            itemList.add(page.name);
+        }
+        ArrayAdapter<String> adapter = new ArrayAdapter<>(context, android.R.layout.simple_list_item_1, android.R.id.text1, itemList);
+        actionBar.setListNavigationCallbacks(adapter, this);
+    }
+
+    @Override
+    public Fragment getItem(int position)
+    {
+        PageInfo info = pages.get(position);
+        return Fragment.instantiate(context, info.fragmentClass.getName(), info.args);
+    }
+
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels)
+    {
+    }
+
+    @Override
+    public void onPageSelected(int position)
+    {
+        //Synchronize pager and navigation.
+        actionBar.setSelectedNavigationItem(position);
+    }
+
+    @Override
+    public void onPageScrollStateChanged(int state)
+    {
+    }
+
+    @Override
+    public int getCount()
+    {
+        return pages.size();
+    }
+
+    @Override
+    public boolean onNavigationItemSelected(int itemPosition, long itemId)
+    {
+        viewPager.setCurrentItem(itemPosition);
+        return true;
+    }
+}