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.Iterator; import java.util.List; import java.util.Map; import org.eclipse.egit.github.core.Issue; import org.eclipse.egit.github.core.RepositoryId; import org.eclipse.egit.github.core.client.GitHubClient; import org.eclipse.egit.github.core.client.PageIterator; import org.eclipse.egit.github.core.service.IssueService; 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.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.Constants; import com.gh4a.Gh4Application; import com.gh4a.IssueActivity; import com.gh4a.R; import com.gh4a.adapter.IssueAdapter; import com.gh4a.loader.PageIteratorLoader; public class IssueListFragment extends BaseFragment implements LoaderManager.LoaderCallbacks<List<Issue>>, OnItemClickListener, OnScrollListener { private String mRepoOwner; private String mRepoName; private String mState; private Map<String, String> mFilterData; private ListView mListView; private IssueAdapter mAdapter; private PageIterator<Issue> mDataIterator; private boolean isLoadMore; private boolean isLoadCompleted; private boolean isFirstTimeLoad; private TextView mLoadingView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mRepoOwner = getArguments().getString(Constants.Repository.REPO_OWNER); mRepoName = getArguments().getString(Constants.Repository.REPO_NAME); mState = getArguments().getString("state"); mFilterData = new HashMap<String, String>(); Bundle args = getArguments(); Iterator<String> i = args.keySet().iterator(); while (i.hasNext()) { String key = i.next(); if (Constants.Repository.REPO_OWNER != key && Constants.Repository.REPO_NAME != key) { mFilterData.put(key, args.getString(key)); } } } @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); mListView.setFastScrollEnabled(true); 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 IssueAdapter(getSherlockActivity(), new ArrayList<Issue>()); 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()); IssueService issueService = new IssueService(client); mDataIterator = issueService.pageIssues(new RepositoryId(mRepoOwner, mRepoName), mFilterData); } private void fillData(List<Issue> issues) { if (issues != null && !issues.isEmpty()) { if (mListView.getFooterViewsCount() == 0) { mListView.addFooterView(mLoadingView); mListView.setAdapter(mAdapter); } if (isLoadMore) { mAdapter.addAll(mAdapter.getCount(), issues); mAdapter.notifyDataSetChanged(); } else { mAdapter.clear(); mAdapter.addAll(issues); mAdapter.notifyDataSetChanged(); mListView.setSelection(0); } } else { mListView.removeFooterView(mLoadingView); } } @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<Issue>> onCreateLoader(int id, Bundle args) { return new PageIteratorLoader<Issue>(getSherlockActivity(), mDataIterator); } @Override public void onLoadFinished(Loader<List<Issue>> loader, List<Issue> issues) { isLoadCompleted = true; isFirstTimeLoad = true; hideLoading(); fillData(issues); } @Override public void onLoaderReset(Loader<List<Issue>> arg0) { // TODO Auto-generated method stub } @Override public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) { Issue issue = (Issue) adapterView.getAdapter().getItem(position); Intent intent = new Intent().setClass(getSherlockActivity(), IssueActivity.class); intent.putExtra(Constants.Repository.REPO_OWNER, mRepoOwner); intent.putExtra(Constants.Repository.REPO_NAME, mRepoName); intent.putExtra(Constants.Issue.ISSUE_NUMBER, issue.getNumber()); intent.putExtra(Constants.Issue.ISSUE_STATE, issue.getState()); startActivity(intent); } }