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      1 /*
      2  * Copyright 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.actionbarcompat;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.view.Menu;
     22 import android.view.MenuInflater;
     23 
     24 /**
     25  * A base activity that defers common functionality across app activities to an {@link
     26  * ActionBarHelper}.
     27  *
     28  * NOTE: dynamically marking menu items as invisible/visible is not currently supported.
     29  *
     30  * NOTE: this may used with the Android Compatibility Package by extending
     31  * android.support.v4.app.FragmentActivity instead of {@link Activity}.
     32  */
     33 public abstract class ActionBarActivity extends Activity {
     34     final ActionBarHelper mActionBarHelper = ActionBarHelper.createInstance(this);
     35 
     36     /**
     37      * Returns the {@link ActionBarHelper} for this activity.
     38      */
     39     protected ActionBarHelper getActionBarHelper() {
     40         return mActionBarHelper;
     41     }
     42 
     43     /**{@inheritDoc}*/
     44     @Override
     45     public MenuInflater getMenuInflater() {
     46         return mActionBarHelper.getMenuInflater(super.getMenuInflater());
     47     }
     48 
     49     /**{@inheritDoc}*/
     50     @Override
     51     protected void onCreate(Bundle savedInstanceState) {
     52         super.onCreate(savedInstanceState);
     53         mActionBarHelper.onCreate(savedInstanceState);
     54     }
     55 
     56     /**{@inheritDoc}*/
     57     @Override
     58     protected void onPostCreate(Bundle savedInstanceState) {
     59         super.onPostCreate(savedInstanceState);
     60         mActionBarHelper.onPostCreate(savedInstanceState);
     61     }
     62 
     63     /**
     64      * Base action bar-aware implementation for
     65      * {@link Activity#onCreateOptionsMenu(android.view.Menu)}.
     66      *
     67      * Note: marking menu items as invisible/visible is not currently supported.
     68      */
     69     @Override
     70     public boolean onCreateOptionsMenu(Menu menu) {
     71         boolean retValue = false;
     72         retValue |= mActionBarHelper.onCreateOptionsMenu(menu);
     73         retValue |= super.onCreateOptionsMenu(menu);
     74         return retValue;
     75     }
     76 
     77     /**{@inheritDoc}*/
     78     @Override
     79     protected void onTitleChanged(CharSequence title, int color) {
     80         mActionBarHelper.onTitleChanged(title, color);
     81         super.onTitleChanged(title, color);
     82     }
     83 }
     84