1 /* 2 * Copyright (C) 2010 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.android.contacts; 18 19 import android.app.Fragment; 20 import android.app.FragmentManager; 21 import android.app.FragmentTransaction; 22 import android.content.ContentResolver; 23 import android.content.Intent; 24 import android.content.SharedPreferences; 25 import android.os.Bundle; 26 import android.view.View; 27 28 import com.android.contacts.activities.TransactionSafeActivity; 29 import com.android.contacts.testing.InjectedServices; 30 31 /** 32 * A common superclass for Contacts activities that handles application-wide services. 33 */ 34 public abstract class ContactsActivity extends TransactionSafeActivity 35 implements ContactSaveService.Listener 36 { 37 38 private ContentResolver mContentResolver; 39 40 @Override getContentResolver()41 public ContentResolver getContentResolver() { 42 if (mContentResolver == null) { 43 InjectedServices services = ContactsApplication.getInjectedServices(); 44 if (services != null) { 45 mContentResolver = services.getContentResolver(); 46 } 47 if (mContentResolver == null) { 48 mContentResolver = super.getContentResolver(); 49 } 50 } 51 return mContentResolver; 52 } 53 54 @Override getSharedPreferences(String name, int mode)55 public SharedPreferences getSharedPreferences(String name, int mode) { 56 InjectedServices services = ContactsApplication.getInjectedServices(); 57 if (services != null) { 58 SharedPreferences prefs = services.getSharedPreferences(); 59 if (prefs != null) { 60 return prefs; 61 } 62 } 63 64 return super.getSharedPreferences(name, mode); 65 } 66 67 @Override getSystemService(String name)68 public Object getSystemService(String name) { 69 Object service = super.getSystemService(name); 70 if (service != null) { 71 return service; 72 } 73 74 return getApplicationContext().getSystemService(name); 75 } 76 77 @Override onCreate(Bundle savedInstanceState)78 protected void onCreate(Bundle savedInstanceState) { 79 ContactSaveService.registerListener(this); 80 super.onCreate(savedInstanceState); 81 } 82 83 @Override onDestroy()84 protected void onDestroy() { 85 ContactSaveService.unregisterListener(this); 86 super.onDestroy(); 87 } 88 89 @Override onServiceCompleted(Intent callbackIntent)90 public void onServiceCompleted(Intent callbackIntent) { 91 onNewIntent(callbackIntent); 92 } 93 94 /** 95 * Convenient version of {@link FragmentManager#findFragmentById(int)}, which throws 96 * an exception if the fragment doesn't exist. 97 */ 98 @SuppressWarnings("unchecked") getFragment(int id)99 public <T extends Fragment> T getFragment(int id) { 100 T result = (T)getFragmentManager().findFragmentById(id); 101 if (result == null) { 102 throw new IllegalArgumentException("fragment 0x" + Integer.toHexString(id) 103 + " doesn't exist"); 104 } 105 return result; 106 } 107 108 /** 109 * Convenient version of {@link #findViewById(int)}, which throws 110 * an exception if the view doesn't exist. 111 */ 112 @SuppressWarnings("unchecked") getView(int id)113 public <T extends View> T getView(int id) { 114 T result = (T)findViewById(id); 115 if (result == null) { 116 throw new IllegalArgumentException("view 0x" + Integer.toHexString(id) 117 + " doesn't exist"); 118 } 119 return result; 120 } 121 showFragment(FragmentTransaction ft, Fragment f)122 protected static void showFragment(FragmentTransaction ft, Fragment f) { 123 if ((f != null) && f.isHidden()) ft.show(f); 124 } 125 hideFragment(FragmentTransaction ft, Fragment f)126 protected static void hideFragment(FragmentTransaction ft, Fragment f) { 127 if ((f != null) && !f.isHidden()) ft.hide(f); 128 } 129 } 130