MainActivity: 現在のページの名前を ActionBar のタイトルに表示する

2 files changed, 35 insertions, 34 deletions

diff --git a/app/src/main/java/net/lacolaco/smileessence/activity/MainActivity.java b/app/src/main/java/net/lacolaco/smileessence/activity/MainActivity.java
index 19e70e17..2756532c 100644
--- a/app/src/main/java/net/lacolaco/smileessence/activity/MainActivity.java
+++ b/app/src/main/java/net/lacolaco/smileessence/activity/MainActivity.java
@@ -24,6 +24,7 @@
 
 package net.lacolaco.smileessence.activity;
 
+import android.app.ActionBar;
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
@@ -65,7 +66,7 @@ import twitter4j.TwitterStream;
 
 import java.lang.reflect.Field;
 
-public class MainActivity extends Activity implements Application.OnCurrentAccountChangedListener {
+public class MainActivity extends Activity implements Application.OnCurrentAccountChangedListener, ViewPager.OnPageChangeListener {
     // ------------------------------ FIELDS ------------------------------
 
     public static final int REQUEST_GET_PICTURE_FROM_GALLERY = 11;
@@ -201,7 +202,8 @@ public class MainActivity extends Activity implements Application.OnCurrentAccou
         setContentView(R.layout.layout_main);
 
         viewPager = (ViewPager) findViewById(R.id.viewPager);
-        pagerAdapter = new PageListAdapter(this, viewPager);
+        pagerAdapter = new PageListAdapter(this);
+        viewPager.addOnPageChangeListener(this);
         currentAccountIconImageView = (ImageView) findViewById(android.R.id.home);
         currentAccountIconImageView.setScaleType(ImageView.ScaleType.FIT_XY);
 
@@ -384,6 +386,22 @@ public class MainActivity extends Activity implements Application.OnCurrentAccou
         Notificator.getInstance().onForeground();
     }
 
+    // --------------------- Interface OnPageChangeListener ---------------------
+
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+    }
+
+    @Override
+    public void onPageSelected(int position) {
+        Logger.debug(String.format("Page selected: %d", position));
+        updateActionBarTitle();
+    }
+
+    @Override
+    public void onPageScrollStateChanged(int state) {
+    }
+
     // -------------------------- OTHER METHODS --------------------------
 
     private void getImageUri(int requestCode, int resultCode, Intent data) {
@@ -414,7 +432,6 @@ public class MainActivity extends Activity implements Application.OnCurrentAccou
         return true;
     }
 
-    @SuppressWarnings("ConstantConditions")
     @Override
     public void onCurrentAccountChanged(Account account) {
         Logger.debug(String.format("onCurrentAccountChanged: %s", account.getUser().getScreenName()));
@@ -427,7 +444,7 @@ public class MainActivity extends Activity implements Application.OnCurrentAccou
 
         // update actionbar
         Runnable update = () -> {
-            getActionBar().setTitle(user.getScreenName());
+            updateActionBarTitle();
             String newUrl = user.getProfileImageUrl();
             if (newUrl != null) {
                 new BitmapURLTask(newUrl, currentAccountIconImageView).execute();
@@ -453,6 +470,16 @@ public class MainActivity extends Activity implements Application.OnCurrentAccou
         startStream();
     }
 
+    private void updateActionBarTitle() {
+        ActionBar actionBar = getActionBar();
+        Account currentAccount = Application.getInstance().getCurrentAccount();
+        if (actionBar != null && currentAccount != null) {
+            String screenName = currentAccount.getUser().getScreenName();
+            String pageTitle = pagerAdapter.getName(viewPager.getCurrentItem());
+            setTitle(String.format("%s / %s", screenName, pageTitle));
+        }
+    }
+
     // TODO: tab order?
     private void initializePages() {
         pagerAdapter.addPage(PostFragment.class, getString(R.string.page_name_post), null, false);
diff --git a/app/src/main/java/net/lacolaco/smileessence/view/adapter/PageListAdapter.java b/app/src/main/java/net/lacolaco/smileessence/view/adapter/PageListAdapter.java
index 45d33ec7..04a38f35 100644
--- a/app/src/main/java/net/lacolaco/smileessence/view/adapter/PageListAdapter.java
+++ b/app/src/main/java/net/lacolaco/smileessence/view/adapter/PageListAdapter.java
@@ -26,7 +26,6 @@ package net.lacolaco.smileessence.view.adapter;
 
 import android.os.Bundle;
 import android.support.v13.app.FragmentPagerAdapter;
-import android.support.v4.view.ViewPager;
 import net.lacolaco.smileessence.activity.MainActivity;
 import net.lacolaco.smileessence.logging.Logger;
 import net.lacolaco.smileessence.view.page.PageFragment;
@@ -37,7 +36,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-public class PageListAdapter extends FragmentPagerAdapter implements ViewPager.OnPageChangeListener {
+public class PageListAdapter extends FragmentPagerAdapter {
 
     // ------------------------------ FIELDS ------------------------------
 
@@ -46,9 +45,8 @@ public class PageListAdapter extends FragmentPagerAdapter implements ViewPager.O
 
     // --------------------------- FragmentPagerAdapter ---------------------------
 
-    public PageListAdapter(MainActivity _activity, ViewPager _viewPager) {
+    public PageListAdapter(MainActivity _activity) {
         super(_activity.getFragmentManager());
-        _viewPager.addOnPageChangeListener(this);
     }
 
     @Override
@@ -83,23 +81,6 @@ public class PageListAdapter extends FragmentPagerAdapter implements ViewPager.O
 
     // ------------------------ INTERFACE METHODS ------------------------
 
-    // --------------------- Interface OnPageChangeListener ---------------------
-
-    @Override
-    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
-    }
-
-    @Override
-    public synchronized void onPageSelected(int position) {
-        //Synchronize pager and navigation.
-        Logger.debug(String.format("Page selected: %d", position));
-        //actionBar.setSelectedNavigationItem(position);
-    }
-
-    @Override
-    public void onPageScrollStateChanged(int state) {
-    }
-
     // -------------------------- OTHER METHODS --------------------------
 
     public void addPage(Class<? extends PageFragment> klass, String name, Bundle args) {
@@ -119,15 +100,8 @@ public class PageListAdapter extends FragmentPagerAdapter implements ViewPager.O
         return pages.remove(position) != null; // TODO
     }
 
-    @Override
-    public void notifyDataSetChanged() {
-        ArrayList<String> itemList = new ArrayList<>();
-        for (PageInfo f : pages) {
-            itemList.add(f.getName());
-        }
-        //ArrayAdapter<String> adapter = new ArrayAdapter<>(context, R.layout.navigation_list_item, R.id.navigation_list_item_text, itemList);
-        //actionBar.setListNavigationCallbacks(adapter, this);
-        super.notifyDataSetChanged();
+    public String getName(int pos) {
+        return pages.get(pos).getName();
     }
 
     @Deprecated