Preference acitivty

app/src/main/java/net/headlezz/notificationlogger/MainActivity.java

@@ -1,11 +1,11 @@
 package net.headlezz.notificationlogger;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.MenuItem;
-import android.widget.Toast;
 
 import butterknife.Bind;
 import butterknife.ButterKnife;
@@ -22,14 +22,15 @@ public class MainActivity extends AppCompatActivity implements Toolbar.OnMenuIte
         ButterKnife.bind(this);
 
         mToolbar.inflateMenu(R.menu.main_activity);
+        mToolbar.setTitle(getString(R.string.app_name));
         mToolbar.setOnMenuItemClickListener(this);
     }
 
     @Override
     public boolean onMenuItemClick(MenuItem item) {
         if(item.getItemId() == R.id.menu_settings) {
-            Toast.makeText(this, "Not implemented", Toast.LENGTH_SHORT).show();
-            return true;
+            Intent intent = new Intent(this, PreferenceActivity.class);
+            startActivity(intent);
         }
         return false;
     }

app/src/main/java/net/headlezz/notificationlogger/PreferenceActivity.java

@@ -0,0 +1,50 @@
+package net.headlezz.notificationlogger;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+
+import com.mikepenz.aboutlibraries.LibsBuilder;
+import com.mikepenz.aboutlibraries.ui.LibsSupportFragment;
+
+import butterknife.Bind;
+import butterknife.ButterKnife;
+
+public class PreferenceActivity extends AppCompatActivity implements PreferenceFragment.PreferenceCallbacks {
+
+    @Bind(R.id.toolbar)
+    Toolbar mToolbar;
+
+    @SuppressWarnings("ConstantConditions")
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.preference_activity);
+        ButterKnife.bind(this);
+        setSupportActionBar(mToolbar);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setTitle(R.string.title_settings);
+
+        if(getSupportFragmentManager().findFragmentById(R.id.fragment_holder) == null) {
+            PreferenceFragment pf = new PreferenceFragment();
+            getSupportFragmentManager().beginTransaction()
+                    .add(R.id.fragment_holder, pf)
+                    .commit();
+        }
+    }
+
+    public void showAboutScreen() {
+        // TODO add other libraries
+        LibsSupportFragment aboutFrag = new LibsBuilder()
+                .withAboutAppName(getString(R.string.app_name))
+                .withAboutIconShown(true)
+                .withAboutVersionShown(true)
+                .withAboutVersionShownCode(true)
+                .supportFragment();
+        getSupportFragmentManager().beginTransaction()
+                .replace(R.id.fragment_holder, aboutFrag)
+                .addToBackStack("about")
+                .commit();
+    }
+}

app/src/main/java/net/headlezz/notificationlogger/PreferenceFragment.java

@@ -0,0 +1,46 @@
+package net.headlezz.notificationlogger;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceFragmentCompat;
+
+public class PreferenceFragment extends PreferenceFragmentCompat implements Preference.OnPreferenceClickListener {
+
+    private PreferenceCallbacks mCallbacks;
+
+    final String PREF_ABOUT = "pref_about";
+
+
+
+    interface PreferenceCallbacks {
+        void showAboutScreen();
+    }
+
+    @Override
+    public void onCreatePreferences(Bundle bundle, String s) {
+        addPreferencesFromResource(R.xml.preferences);
+        findPreference(PREF_ABOUT).setOnPreferenceClickListener(this);
+    }
+
+    @Override
+    public boolean onPreferenceClick(Preference preference) {
+        if(preference.getKey().equals(PREF_ABOUT)) {
+            mCallbacks.showAboutScreen();
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        mCallbacks = (PreferenceCallbacks) activity;
+    }
+
+    @Override
+    public void onDetach() {
+        super.onDetach();
+        mCallbacks = null;
+    }
+}