1 /* 2 * Copyright (C) 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.supportv7.app; 18 19 import android.content.Context; 20 import android.content.Intent; 21 import android.provider.Settings; 22 import android.support.v7.app.ActionBarActivity; 23 import android.support.v4.view.ActionProvider; 24 import android.view.LayoutInflater; 25 import android.view.Menu; 26 import android.view.MenuItem; 27 import android.view.View; 28 import android.widget.ImageButton; 29 import android.widget.Toast; 30 import com.example.android.supportv7.R; 31 32 /** 33 * This activity demonstrates how to implement an {@link android.view.ActionProvider} 34 * for adding functionality to the Action Bar. In particular this demo creates an 35 * ActionProvider for launching the system settings and adds a menu item with that 36 * provider. 37 */ 38 public class ActionBarSettingsActionProviderActivity extends ActionBarActivity { 39 @Override 40 public boolean onCreateOptionsMenu(Menu menu) { 41 super.onCreateOptionsMenu(menu); 42 getMenuInflater().inflate(R.menu.action_bar_settings_action_provider, menu); 43 return true; 44 } 45 46 @Override 47 public boolean onOptionsItemSelected(MenuItem item) { 48 // If this callback does not handle the item click, onPerformDefaultAction 49 // of the ActionProvider is invoked. Hence, the provider encapsulates the 50 // complete functionality of the menu item. 51 Toast.makeText(this, R.string.action_bar_settings_action_provider_no_handling, 52 Toast.LENGTH_SHORT).show(); 53 return false; 54 } 55 56 public static class SettingsActionProvider extends ActionProvider { 57 /** An intent for launching the system settings. */ 58 private static final Intent sSettingsIntent = new Intent(Settings.ACTION_SETTINGS); 59 60 /** 61 * Creates a new instance. 62 * 63 * @param context Context for accessing resources. 64 */ 65 public SettingsActionProvider(Context context) { 66 super(context); 67 } 68 69 @Override 70 public View onCreateActionView() { 71 // Inflate the action view to be shown on the action bar. 72 LayoutInflater layoutInflater = LayoutInflater.from(getContext()); 73 View view = layoutInflater.inflate(R.layout.action_bar_settings_action_provider, null); 74 ImageButton button = (ImageButton) view.findViewById(R.id.button); 75 // Attach a click listener for launching the system settings. 76 button.setOnClickListener(new View.OnClickListener() { 77 @Override 78 public void onClick(View v) { 79 getContext().startActivity(sSettingsIntent); 80 } 81 }); 82 return view; 83 } 84 85 @Override 86 public boolean onPerformDefaultAction() { 87 // This is called if the host menu item placed in the overflow menu of the 88 // action bar is clicked and the host activity did not handle the click. 89 getContext().startActivity(sSettingsIntent); 90 return true; 91 } 92 } 93 } 94
