Java tutorial
/* * Copyright 2013 Google Inc. * * 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.sharpcart.android.wizardpager.wizard.ui; import com.sharpcart.android.R; import com.sharpcart.android.wizardpager.wizard.model.AbstractWizardModel; import com.sharpcart.android.wizardpager.wizard.model.ModelCallbacks; import com.sharpcart.android.wizardpager.wizard.model.Page; import com.sharpcart.android.wizardpager.wizard.model.ReviewItem; import android.app.Activity; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.text.InputType; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.BaseAdapter; import android.widget.ListView; import android.widget.TextView; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; public class ReviewFragment extends ListFragment implements ModelCallbacks { private Callbacks mCallbacks; private AbstractWizardModel mWizardModel; private List<ReviewItem> mCurrentReviewItems; private ReviewAdapter mReviewAdapter; public ReviewFragment() { } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); mReviewAdapter = new ReviewAdapter(); } @Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) { final View rootView = inflater.inflate(R.layout.fragment_page, container, false); final TextView titleView = (TextView) rootView.findViewById(android.R.id.title); titleView.setText(R.string.review); titleView.setTextColor(getResources().getColor(R.color.review_green)); final ListView listView = (ListView) rootView.findViewById(android.R.id.list); setListAdapter(mReviewAdapter); listView.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE); return rootView; } @Override public void onAttach(final Activity activity) { super.onAttach(activity); if (!(activity instanceof Callbacks)) { throw new ClassCastException("Activity must implement fragment's callbacks"); } mCallbacks = (Callbacks) activity; mWizardModel = mCallbacks.onGetModel(); mWizardModel.registerListener(this); onPageTreeChanged(); } @Override public void onPageTreeChanged() { onPageDataChanged(null); } @Override public void onDetach() { super.onDetach(); mCallbacks = null; mWizardModel.unregisterListener(this); } @Override public void onPageDataChanged(final Page changedPage) { final ArrayList<ReviewItem> reviewItems = new ArrayList<ReviewItem>(); for (final Page page : mWizardModel.getCurrentPageSequence()) { page.getReviewItems(reviewItems); } Collections.sort(reviewItems, new Comparator<ReviewItem>() { @Override public int compare(final ReviewItem a, final ReviewItem b) { return a.getWeight() > b.getWeight() ? +1 : a.getWeight() < b.getWeight() ? -1 : 0; } }); mCurrentReviewItems = reviewItems; if (mReviewAdapter != null) { mReviewAdapter.notifyDataSetInvalidated(); } } @Override public void onListItemClick(final ListView l, final View v, final int position, final long id) { mCallbacks.onEditScreenAfterReview(mCurrentReviewItems.get(position).getPageKey()); } public interface Callbacks { AbstractWizardModel onGetModel(); void onEditScreenAfterReview(String pageKey); } private class ReviewAdapter extends BaseAdapter { @Override public boolean hasStableIds() { return true; } @Override public int getItemViewType(final int position) { return 0; } @Override public int getViewTypeCount() { return 1; } @Override public boolean areAllItemsEnabled() { return true; } @Override public Object getItem(final int position) { return mCurrentReviewItems.get(position); } @Override public long getItemId(final int position) { return mCurrentReviewItems.get(position).hashCode(); } @Override public View getView(final int position, final View view, final ViewGroup container) { final LayoutInflater inflater = LayoutInflater.from(getActivity()); final View rootView = inflater.inflate(R.layout.list_item_review, container, false); final ReviewItem reviewItem = mCurrentReviewItems.get(position); String value = reviewItem.getDisplayValue(); if (TextUtils.isEmpty(value)) { value = "(None)"; } //We do not want to show the password as part of the review if (reviewItem.getTitle().equalsIgnoreCase("Your password")) { ((TextView) rootView.findViewById(android.R.id.text1)).setText(reviewItem.getTitle()); ((TextView) rootView.findViewById(android.R.id.text2)).setText(value); ((TextView) rootView.findViewById(android.R.id.text2)) .setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD); } else { ((TextView) rootView.findViewById(android.R.id.text1)).setText(reviewItem.getTitle()); ((TextView) rootView.findViewById(android.R.id.text2)).setText(value); } return rootView; } @Override public int getCount() { return mCurrentReviewItems.size(); } } }