Java tutorial
/* * Copyright 2011 Azwan Adli Abdullah * * 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.gh4a.fragment; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.eclipse.egit.github.core.Repository; import org.eclipse.egit.github.core.client.GitHubClient; import org.eclipse.egit.github.core.client.PageIterator; import org.eclipse.egit.github.core.service.RepositoryService; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.support.v4.app.LoaderManager; import android.support.v4.content.Loader; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.AbsListView.OnScrollListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.TextView; import com.gh4a.BaseSherlockFragmentActivity; import com.gh4a.Constants; import com.gh4a.Gh4Application; import com.gh4a.R; import com.gh4a.RepositoryActivity; import com.gh4a.adapter.RepositoryAdapter; import com.gh4a.loader.PageIteratorLoader; public class RepositoryListFragment extends BaseFragment implements LoaderManager.LoaderCallbacks<List<Repository>>, OnItemClickListener, OnScrollListener { private String mLogin; private String mUserType; private String mRepoType; private ListView mListView; private RepositoryAdapter mAdapter; private PageIterator<Repository> mDataIterator; private boolean isLoadMore; private boolean isLoadCompleted; private boolean isFirstTimeLoad; private TextView mLoadingView; public static RepositoryListFragment newInstance(String login, String userType, String repoType) { RepositoryListFragment f = new RepositoryListFragment(); Bundle args = new Bundle(); args.putString(Constants.User.USER_LOGIN, login); args.putString(Constants.User.USER_TYPE, userType); args.putString(Constants.Repository.REPO_TYPE, repoType); f.setArguments(args); return f; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mLogin = getArguments().getString(Constants.User.USER_LOGIN); mUserType = getArguments().getString(Constants.User.USER_TYPE); mRepoType = getArguments().getString(Constants.Repository.REPO_TYPE); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.generic_list, container, false); mListView = (ListView) v.findViewById(R.id.list_view); return v; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); LayoutInflater vi = getSherlockActivity().getLayoutInflater(); mLoadingView = (TextView) vi.inflate(R.layout.row_simple, null); mLoadingView.setText("Loading..."); mLoadingView.setTextColor(Color.parseColor("#0099cc")); mAdapter = new RepositoryAdapter(getSherlockActivity(), new ArrayList<Repository>()); mListView.setAdapter(mAdapter); mListView.setOnItemClickListener(this); mListView.setOnScrollListener(this); } @Override public void onResume() { super.onResume(); if (!isFirstTimeLoad) { loadData(); if (getLoaderManager().getLoader(0) == null) { getLoaderManager().initLoader(0, null, this); } else { getLoaderManager().restartLoader(0, null, this); } getLoaderManager().getLoader(0).forceLoad(); } } public void loadData() { Gh4Application app = (Gh4Application) getSherlockActivity().getApplication(); GitHubClient client = new GitHubClient(); client.setOAuth2Token(app.getAuthToken()); RepositoryService repoService = new RepositoryService(client); Map<String, String> filterData = new HashMap<String, String>(); if ("sources".equals(mRepoType) || "forks".equals(mRepoType)) { filterData.put("type", "all"); } else { filterData.put("type", mRepoType); } if (mLogin.equals(app.getAuthLogin())) { mDataIterator = repoService.pageRepositories(filterData, 100); } else if (Constants.User.USER_TYPE_ORG.equals(mUserType)) { mDataIterator = repoService.pageOrgRepositories(mLogin, new HashMap<String, String>()); } else { mDataIterator = repoService.pageRepositories(mLogin, filterData, 100); } } private void fillData(List<Repository> repositories) { if (repositories != null && !repositories.isEmpty()) { if (mListView.getFooterViewsCount() == 0) { mListView.addFooterView(mLoadingView); mListView.setAdapter(mAdapter); } if (isLoadMore) { if ("sources".equals(mRepoType) || "forks".equals(mRepoType)) { for (Repository repository : repositories) { if ("sources".equals(mRepoType) && !repository.isFork()) { mAdapter.add(repository); } else if ("forks".equals(mRepoType) && repository.isFork()) { mAdapter.add(repository); } } } else { mAdapter.addAll(mAdapter.getCount(), repositories); } mAdapter.notifyDataSetChanged(); } else { mAdapter.clear(); if ("sources".equals(mRepoType) || "forks".equals(mRepoType)) { for (Repository repository : repositories) { if ("sources".equals(mRepoType) && !repository.isFork()) { mAdapter.add(repository); } else if ("forks".equals(mRepoType) && repository.isFork()) { mAdapter.add(repository); } } } else { mAdapter.addAll(repositories); } mAdapter.notifyDataSetChanged(); mListView.setSelection(0); } } else { mListView.removeFooterView(mLoadingView); } } @Override public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) { Gh4Application context = ((BaseSherlockFragmentActivity) getActivity()).getApplicationContext(); Repository repository = (Repository) adapterView.getAdapter().getItem(position); Intent intent = new Intent().setClass(getActivity(), RepositoryActivity.class); Bundle data = context.populateRepository(repository); intent.putExtra(Constants.DATA_BUNDLE, data); startActivity(intent); } @Override public void onScroll(AbsListView view, int firstVisible, int visibleCount, int totalCount) { boolean loadMore = firstVisible + visibleCount >= totalCount; if (loadMore) { if (getLoaderManager().getLoader(0) != null && isLoadCompleted) { isLoadMore = true; isLoadCompleted = false; getLoaderManager().getLoader(0).forceLoad(); } } } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { } @Override public Loader<List<Repository>> onCreateLoader(int id, Bundle args) { return new PageIteratorLoader<Repository>(getSherlockActivity(), mDataIterator); } @Override public void onLoadFinished(Loader<List<Repository>> loader, List<Repository> repositories) { isLoadCompleted = true; isFirstTimeLoad = true; hideLoading(); fillData(repositories); } @Override public void onLoaderReset(Loader<List<Repository>> arg0) { // TODO Auto-generated method stub } }