update the SearchableDictionary sample to use SearchView in the Action Bar

and set the main activity to use launchMode="singleTop"

Change-Id: I72bd13bb8250d0b00a713fe2980a5ad692f2cb9e

samples/SearchableDictionary/src/com/example/android/searchabledict/SearchableDictionary.java

@@ -17,7 +17,9 @@
 package com.example.android.searchabledict;
 
 import android.app.Activity;
+import android.app.ActionBar;
 import android.app.SearchManager;
+import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
@@ -28,6 +30,7 @@ import android.view.MenuItem;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.ListView;
+import android.widget.SearchView;
 import android.widget.SimpleCursorAdapter;
 import android.widget.TextView;
 import android.widget.AdapterView.OnItemClickListener;
@@ -50,8 +53,19 @@ public class SearchableDictionary extends Activity {
         mTextView = (TextView) findViewById(R.id.text);
         mListView = (ListView) findViewById(R.id.list);
 
-        Intent intent = getIntent();
+        handleIntent(getIntent());
+    }
 
+    @Override
+    protected void onNewIntent(Intent intent) {
+        // Because this activity has set launchMode="singleTop", the system calls this method
+        // to deliver the intent if this actvity is currently the foreground activity when
+        // invoked again (when the user executes a search from this activity, we don't create
+        // a new instance of this activity, so the system delivers the search intent here)
+        handleIntent(intent);
+    }
+
+    private void handleIntent(Intent intent) {
         if (Intent.ACTION_VIEW.equals(intent.getAction())) {
             // handles a click on a search suggestion; launches activity to show word
             Intent wordIntent = new Intent(this, WordActivity.class);
@@ -115,6 +129,12 @@ public class SearchableDictionary extends Activity {
     public boolean onCreateOptionsMenu(Menu menu) {
         MenuInflater inflater = getMenuInflater();
         inflater.inflate(R.menu.options_menu, menu);
+
+        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
+        SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView();
+        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
+        searchView.setIconifiedByDefault(false);
+
         return true;
     }
 

samples/SearchableDictionary/src/com/example/android/searchabledict/WordActivity.java

@@ -17,6 +17,8 @@
 package com.example.android.searchabledict;
 
 import android.app.Activity;
+import android.app.ActionBar;
+import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
@@ -35,6 +37,9 @@ public class WordActivity extends Activity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.word);
 
+        ActionBar actionBar = getActionBar();
+        actionBar.setDisplayHomeAsUpEnabled(true);
+
         Uri uri = getIntent().getData();
         Cursor cursor = managedQuery(uri, null, null, null, null);
 
@@ -67,6 +72,11 @@ public class WordActivity extends Activity {
             case R.id.search:
                 onSearchRequested();
                 return true;
+            case android.R.id.home:
+                Intent intent = new Intent(this, SearchableDictionary.class);
+                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+                startActivity(intent);
+                return true;
             default:
                 return false;
         }