| /* |
| * 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 com.example.android.apis.R; |
| import com.example.android.apis.Shakespeare; |
| |
| import android.app.Activity; |
| import android.app.Fragment; |
| import android.app.FragmentTransaction; |
| import android.app.ListFragment; |
| import android.content.Intent; |
| import android.content.res.Configuration; |
| import android.os.Bundle; |
| import android.util.TypedValue; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.ArrayAdapter; |
| import android.widget.ListView; |
| import android.widget.ScrollView; |
| import android.widget.TextView; |
| |
| /** |
| * Demonstration of using fragments to implement different activity layouts. |
| * This sample provides a different layout (and activity flow) when run in |
| * landscape. |
| */ |
| public class FragmentLayout extends Activity { |
| |
| //BEGIN_INCLUDE(main) |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| setContentView(R.layout.fragment_layout); |
| } |
| //END_INCLUDE(main) |
| |
| /** |
| * This is a secondary activity, to show what the user has selected |
| * when the screen is not large enough to show it all in one activity. |
| */ |
| //BEGIN_INCLUDE(details_activity) |
| public static class DetailsActivity extends Activity { |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| if (getResources().getConfiguration().orientation |
| == Configuration.ORIENTATION_LANDSCAPE) { |
| // If the screen is now in landscape mode, we can show the |
| // dialog in-line with the list so we don't need this activity. |
| finish(); |
| return; |
| } |
| |
| if (savedInstanceState == null) { |
| // During initial setup, plug in the details fragment. |
| DetailsFragment details = new DetailsFragment(); |
| details.setArguments(getIntent().getExtras()); |
| getFragmentManager().beginTransaction().add(android.R.id.content, details).commit(); |
| } |
| } |
| } |
| //END_INCLUDE(details_activity) |
| |
| /** |
| * This is the "top-level" fragment, showing a list of items that the |
| * user can pick. Upon picking an item, it takes care of displaying the |
| * data to the user as appropriate based on the currrent UI layout. |
| */ |
| //BEGIN_INCLUDE(titles) |
| public static class TitlesFragment extends ListFragment { |
| boolean mDualPane; |
| int mCurCheckPosition = 0; |
| |
| @Override |
| public void onActivityCreated(Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| |
| // Populate list with our static array of titles. |
| setListAdapter(new ArrayAdapter<String>(getActivity(), |
| android.R.layout.simple_list_item_activated_1, Shakespeare.TITLES)); |
| |
| // Check to see if we have a frame in which to embed the details |
| // fragment directly in the containing UI. |
| View detailsFrame = getActivity().findViewById(R.id.details); |
| mDualPane = detailsFrame != null && detailsFrame.getVisibility() == View.VISIBLE; |
| |
| if (savedInstanceState != null) { |
| // Restore last state for checked position. |
| mCurCheckPosition = savedInstanceState.getInt("curChoice", 0); |
| } |
| |
| if (mDualPane) { |
| // In dual-pane mode, the list view highlights the selected item. |
| getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE); |
| // Make sure our UI is in the correct state. |
| showDetails(mCurCheckPosition); |
| } |
| } |
| |
| @Override |
| public void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| outState.putInt("curChoice", mCurCheckPosition); |
| } |
| |
| @Override |
| public void onListItemClick(ListView l, View v, int position, long id) { |
| showDetails(position); |
| } |
| |
| /** |
| * Helper function to show the details of a selected item, either by |
| * displaying a fragment in-place in the current UI, or starting a |
| * whole new activity in which it is displayed. |
| */ |
| void showDetails(int index) { |
| mCurCheckPosition = index; |
| |
| if (mDualPane) { |
| // We can display everything in-place with fragments, so update |
| // the list to highlight the selected item and show the data. |
| getListView().setItemChecked(index, true); |
| |
| // Check what fragment is currently shown, replace if needed. |
| DetailsFragment details = (DetailsFragment) |
| getFragmentManager().findFragmentById(R.id.details); |
| if (details == null || details.getShownIndex() != index) { |
| // Make new fragment to show this selection. |
| details = DetailsFragment.newInstance(index); |
| |
| // Execute a transaction, replacing any existing fragment |
| // with this one inside the frame. |
| FragmentTransaction ft = getFragmentManager().beginTransaction(); |
| if (index == 0) { |
| ft.replace(R.id.details, details); |
| } else { |
| ft.replace(R.id.a_item, details); |
| } |
| ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); |
| ft.commit(); |
| } |
| |
| } else { |
| // Otherwise we need to launch a new activity to display |
| // the dialog fragment with selected text. |
| Intent intent = new Intent(); |
| intent.setClass(getActivity(), DetailsActivity.class); |
| intent.putExtra("index", index); |
| startActivity(intent); |
| } |
| } |
| } |
| //END_INCLUDE(titles) |
| |
| /** |
| * This is the secondary fragment, displaying the details of a particular |
| * item. |
| */ |
| //BEGIN_INCLUDE(details) |
| public static class DetailsFragment extends Fragment { |
| /** |
| * Create a new instance of DetailsFragment, initialized to |
| * show the text at 'index'. |
| */ |
| public static DetailsFragment newInstance(int index) { |
| DetailsFragment f = new DetailsFragment(); |
| |
| // Supply index input as an argument. |
| Bundle args = new Bundle(); |
| args.putInt("index", index); |
| f.setArguments(args); |
| |
| return f; |
| } |
| |
| public int getShownIndex() { |
| return getArguments().getInt("index", 0); |
| } |
| |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| if (container == null) { |
| // We have different layouts, and in one of them this |
| // fragment's containing frame doesn't exist. The fragment |
| // may still be created from its saved state, but there is |
| // no reason to try to create its view hierarchy because it |
| // won't be displayed. Note this is not needed -- we could |
| // just run the code below, where we would create and return |
| // the view hierarchy; it would just never be used. |
| return null; |
| } |
| |
| ScrollView scroller = new ScrollView(getActivity()); |
| TextView text = new TextView(getActivity()); |
| int padding = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, |
| 4, getActivity().getResources().getDisplayMetrics()); |
| text.setPadding(padding, padding, padding, padding); |
| scroller.addView(text); |
| text.setText(Shakespeare.DIALOGUE[getShownIndex()]); |
| return scroller; |
| } |
| } |
| //END_INCLUDE(details) |
| } |