Added simple demos for ActionBar

Change-Id: Ie0dbf0c2bad61f75825e832305205811f49459d1

samples/ApiDemos/src/com/example/android/apis/app/ActionBarMechanics.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.apis.app;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.Window;
+import android.widget.Toast;
+
+/**
+ * This demonstrates the basics of the Action Bar and how it interoperates with the
+ * standard options menu. This demo is for informative purposes only; see ActionBarUsage for
+ * an example of using the Action Bar in a more idiomatic manner.
+ */
+public class ActionBarMechanics extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // The Action Bar is a window feature. The feature must be requested
+        // before setting a content view. Normally this is set automatically
+        // by your Activity's theme in your manifest. The provided system
+        // theme Theme.WithActionBar enables this for you. Use it as you would
+        // use Theme.NoTitleBar. You can add an Action Bar to your own themes
+        // by adding the element <item name="android:windowActionBar">true</item>
+        // to your style definition.
+        getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Menu items default to never show in the action bar. On most devices this means
+        // they will show in the standard options menu panel when the menu button is pressed.
+        // On xlarge-screen devices a "More" button will appear in the far right of the
+        // Action Bar that will display remaining items in a cascading menu.
+        menu.add("Normal item");
+
+        MenuItem actionItem = menu.add("Action Button");
+
+        // Items that show as actions should favor the "if room" setting, which will
+        // prevent too many buttons from crowding the bar. Extra items will show in the
+        // overflow area.
+        actionItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+
+        // Items that show as actions are strongly encouraged to use an icon.
+        // These icons are shown without a text description, and therefore should
+        // be sufficiently descriptive on their own.
+        actionItem.setIcon(android.R.drawable.ic_menu_share);
+
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        Toast.makeText(this, "Selected Item: " + item.getTitle(), Toast.LENGTH_SHORT).show();
+        return true;
+    }
+}

samples/ApiDemos/src/com/example/android/apis/app/ActionBarUsage.java

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+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.apis.app;
+
+import android.app.Activity;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.widget.Toast;
+
+import com.example.android.apis.R;
+
+/**
+ * This demonstrates idiomatic usage of the Action Bar. The theme Theme.WithActionBar
+ * is specified for this activity in AndroidManifest.xml and a menu resource is used
+ * to populate the menu data itself. If you'd like to see how these things work under
+ * the hood, see ActionBarMechanics.
+ */
+public class ActionBarUsage extends Activity {
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        MenuInflater inflater = getMenuInflater();
+        inflater.inflate(R.menu.actions, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        Toast.makeText(this, "Selected Item: " + item.getTitle(), Toast.LENGTH_SHORT).show();
+        return true;
+    }
+
+    // This method is specified as an onClick handler in the menu xml and will
+    // take precedence over the Activity's onOptionsItemSelected method.
+    // See res/menu/actions.xml for more info.
+    public void onSearch(MenuItem item) {
+        Toast.makeText(this, "Searching...", Toast.LENGTH_SHORT).show();
+    }
+}