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.content.Context; 21 import android.os.Bundle; 22 import android.view.LayoutInflater; 23 import android.view.Menu; 24 import android.view.MenuInflater; 25 import android.view.MenuItem; 26 import android.view.View; 27 28 /** 29 * An extension of {@link ActionBarHelper} that provides Android 3.0-specific functionality for 30 * Honeycomb tablets. It thus requires API level 11. 31 */ 32 public class ActionBarHelperHoneycomb extends ActionBarHelper { 33 private Menu mOptionsMenu; 34 private View mRefreshIndeterminateProgressView = null; 35 ActionBarHelperHoneycomb(Activity activity)36 protected ActionBarHelperHoneycomb(Activity activity) { 37 super(activity); 38 } 39 40 @Override onCreateOptionsMenu(Menu menu)41 public boolean onCreateOptionsMenu(Menu menu) { 42 mOptionsMenu = menu; 43 return super.onCreateOptionsMenu(menu); 44 } 45 46 @Override setRefreshActionItemState(boolean refreshing)47 public void setRefreshActionItemState(boolean refreshing) { 48 // On Honeycomb, we can set the state of the refresh button by giving it a custom 49 // action view. 50 if (mOptionsMenu == null) { 51 return; 52 } 53 54 final MenuItem refreshItem = mOptionsMenu.findItem(R.id.menu_refresh); 55 if (refreshItem != null) { 56 if (refreshing) { 57 if (mRefreshIndeterminateProgressView == null) { 58 LayoutInflater inflater = (LayoutInflater) 59 getActionBarThemedContext().getSystemService( 60 Context.LAYOUT_INFLATER_SERVICE); 61 mRefreshIndeterminateProgressView = inflater.inflate( 62 R.layout.actionbar_indeterminate_progress, null); 63 } 64 65 refreshItem.setActionView(mRefreshIndeterminateProgressView); 66 } else { 67 refreshItem.setActionView(null); 68 } 69 } 70 } 71 72 /** 73 * Returns a {@link Context} suitable for inflating layouts for the action bar. The 74 * implementation for this method in {@link ActionBarHelperICS} asks the action bar for a 75 * themed context. 76 */ getActionBarThemedContext()77 protected Context getActionBarThemedContext() { 78 return mActivity; 79 } 80 } 81