Help and About pages

app/src/main/java/i2p/bote/android/EmailListActivity.java

@@ -305,6 +305,11 @@ public class EmailListActivity extends ActionBarActivity implements
                 startActivity(si);
                 return true;
 
+            case R.id.action_help:
+                Intent hi = new Intent(this, HelpActivity.class);
+                startActivity(hi);
+                return true;
+
             default:
                 return super.onOptionsItemSelected(item);
         }

app/src/main/java/i2p/bote/android/HelpAboutFragment.java

@@ -0,0 +1,56 @@
+package i2p.bote.android;
+
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import org.sufficientlysecure.htmltextview.HtmlTextView;
+
+
+public class HelpAboutFragment extends Fragment {
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_help_about, container, false);
+
+        TextView versionText = (TextView) view.findViewById(R.id.help_about_version);
+        versionText.setText(getString(R.string.help_about_version) + " " + getVersion());
+
+        HtmlTextView aboutTextView = (HtmlTextView) view.findViewById(R.id.help_about_text);
+
+        // load html from raw resource (Parsing handled by HtmlTextView library)
+        aboutTextView.setHtmlFromRawResource(getActivity(), R.raw.help_about, true);
+
+        // no flickering when clicking textview for Android < 4
+        aboutTextView.setTextColor(getResources().getColor(android.R.color.black));
+
+        return view;
+    }
+
+    /**
+     * Get the current package version.
+     *
+     * @return The current version.
+     */
+    private String getVersion() {
+        String result = "";
+        try {
+            PackageManager manager = getActivity().getPackageManager();
+            PackageInfo info = manager.getPackageInfo(getActivity().getPackageName(), 0);
+
+            result = String.format("%s (%s)", info.versionName, info.versionCode);
+        } catch (NameNotFoundException e) {
+            Log.w(Constants.ANDROID_LOG_TAG, "Unable to get application version: " + e.getMessage());
+            result = "Unable to get application version.";
+        }
+
+        return result;
+    }
+}

app/src/main/java/i2p/bote/android/HelpActivity.java

@@ -0,0 +1,95 @@
+package i2p.bote.android;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.support.v7.app.ActionBarActivity;
+import android.support.v7.widget.Toolbar;
+
+import com.viewpagerindicator.TitlePageIndicator;
+
+public class HelpActivity extends ActionBarActivity {
+    /**
+     * The {@link android.support.v4.view.PagerAdapter} that will provide
+     * fragments for each of the sections. We use a
+     * {@link FragmentPagerAdapter} derivative, which will keep every
+     * loaded fragment in memory. If this becomes too memory intensive, it
+     * may be best to switch to a
+     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
+     */
+    SectionsPagerAdapter mSectionsPagerAdapter;
+
+    /**
+     * The {@link ViewPager} that will host the section contents.
+     */
+    ViewPager mViewPager;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_help);
+
+        // Set the action bar
+        Toolbar toolbar = (Toolbar) findViewById(R.id.main_toolbar);
+        setSupportActionBar(toolbar);
+
+        // Enable ActionBar app icon to behave as action to go back
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+        // Create the sections adapter.
+        mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
+
+        // Set up the ViewPager with the sections adapter.
+        mViewPager = (ViewPager) findViewById(R.id.pager);
+        mViewPager.setAdapter(mSectionsPagerAdapter);
+
+        // Bind the page indicator to the pager.
+        TitlePageIndicator pageIndicator = (TitlePageIndicator) findViewById(R.id.page_indicator);
+        pageIndicator.setViewPager(mViewPager);
+    }
+
+
+    /**
+     * A {@link android.support.v4.app.FragmentPagerAdapter} that returns a fragment corresponding to
+     * one of the help sections.
+     */
+    public class SectionsPagerAdapter extends FragmentPagerAdapter {
+
+        public SectionsPagerAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        @Override
+        public CharSequence getPageTitle(int position) {
+            switch (position) {
+                case 1:
+                    return getString(R.string.changelog);
+                case 2:
+                    return getString(R.string.about);
+                case 0:
+                default:
+                    return getString(R.string.start);
+            }
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            switch (position) {
+                case 1:
+                    return HelpHtmlFragment.newInstance(R.raw.help_changelog);
+                case 2:
+                    return new HelpAboutFragment();
+                case 0:
+                default:
+                    return HelpHtmlFragment.newInstance(R.raw.help_start);
+            }
+        }
+
+        @Override
+        public int getCount() {
+            return 3;
+        }
+    }
+}

app/src/main/java/i2p/bote/android/HelpHtmlFragment.java

@@ -0,0 +1,35 @@
+package i2p.bote.android;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+import org.sufficientlysecure.htmltextview.HtmlTextView;
+
+public class HelpHtmlFragment extends Fragment {
+    public static final String ARG_HTML_FILE = "htmlFile";
+
+    static HelpHtmlFragment newInstance(int htmlFile) {
+        HelpHtmlFragment f = new HelpHtmlFragment();
+        Bundle args = new Bundle();
+        args.putInt(ARG_HTML_FILE, htmlFile);
+        f.setArguments(args);
+        return f;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        ScrollView scroller = new ScrollView(getActivity());
+        HtmlTextView text = new HtmlTextView(getActivity());
+        scroller.addView(text);
+        int padH = getResources().getDimensionPixelOffset(R.dimen.activity_horizontal_margin);
+        int padV = getResources().getDimensionPixelOffset(R.dimen.activity_vertical_margin);
+        text.setPadding(padH, padV, padH, padV);
+        text.setHtmlFromRawResource(getActivity(), getArguments().getInt(ARG_HTML_FILE), true);
+        text.setTextColor(getResources().getColor(R.color.primary_text_default_material_light));
+        return scroller;
+    }
+}