Java tutorial
/* * Copyright (C) 2013 YROM.NET * * 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 tv.acfun.a63; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.apache.commons.httpclient.Cookie; import tv.acfun.a63.adapter.MentionsAdapter; import tv.acfun.a63.api.ArticleApi; import tv.acfun.a63.api.entity.Comment; import tv.acfun.a63.api.entity.Content; import tv.acfun.a63.api.entity.Mentions; import tv.acfun.a63.base.BaseActivity; import tv.acfun.a63.util.ActionBarUtil; import tv.acfun.a63.util.ArrayUtil; import tv.acfun.a63.util.Connectivity; import tv.acfun.a63.util.UsingCookiesRequest; import android.content.Context; import android.content.Intent; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.util.Log; import android.util.SparseArray; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.ProgressBar; import android.widget.TextView; import com.actionbarsherlock.app.ActionBar; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.android.volley.Cache; import com.android.volley.NetworkResponse; import com.android.volley.ParseError; import com.android.volley.Request; import com.android.volley.Response; import com.android.volley.Response.ErrorListener; import com.android.volley.Response.Listener; import com.android.volley.VolleyError; import com.android.volley.toolbox.HttpHeaderParser; import com.handmark.pulltorefresh.library.PullToRefreshBase; import com.handmark.pulltorefresh.library.PullToRefreshBase.OnLastItemVisibleListener; import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener; import com.handmark.pulltorefresh.library.PullToRefreshListView; import com.umeng.analytics.MobclickAgent; /** * ? * @author Yrom * */ public class MentionActivity extends BaseActivity implements OnClickListener, OnItemClickListener { private static final String TAG = "Mentions"; private ListView mList; private ProgressBar mLoadingBar; private TextView mTimeOutText; private View mFootview; private MentionsAdapter mAdapter; private SparseArray<Comment> data = new SparseArray<Comment>(); private List<Content> contentList = new ArrayList<Content>(); private List<Integer> commentIdList = new ArrayList<Integer>(); private boolean isloading; private boolean shouldReload; private Cookie[] mCookies; private boolean hasNextPage; private PullToRefreshListView mPtr; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_main_dummy); MobclickAgent.onEvent(this, "view_mentions"); ActionBar ab = getSupportActionBar(); ActionBarUtil.setXiaomiFilterDisplayOptions(ab, false); ab.setTitle(R.string.mentions); initList(); if (AcApp.getUser() != null) { mCookies = JSON.parseObject(AcApp.getUser().cookies, Cookie[].class); } else { mLoadingBar.setVisibility(View.GONE); mTimeOutText.setVisibility(View.VISIBLE); mTimeOutText.setText(R.string.sign_in_first); mPtr.setVisibility(View.GONE); } MobclickAgent.onEvent(this, "view_mentions"); requestData(1, true); } private void initList() { mPtr = (PullToRefreshListView) findViewById(R.id.list); mPtr.setOnRefreshListener(new OnRefreshListener<ListView>() { @Override public void onRefresh(PullToRefreshBase<ListView> refreshView) { if (!isloading) { pageIndex = 1; requestData(pageIndex, true); } } }); mPtr.setOnLastItemVisibleListener(new OnLastItemVisibleListener() { @Override public void onLastItemVisible() { if (hasNextPage) { if (!isloading) { requestData(++pageIndex, false); } } else { mFootview.findViewById(R.id.list_footview_progress).setVisibility(View.GONE); ((TextView) mFootview.findViewById(R.id.list_footview_text)).setText(R.string.no_more); } } }); mList = mPtr.getRefreshableView(); mLoadingBar = (ProgressBar) findViewById(R.id.loading); mTimeOutText = (TextView) findViewById(R.id.time_out_text); mTimeOutText.setText(R.string.time_out); mTimeOutText.setOnClickListener(this); mFootview = LayoutInflater.from(this).inflate(R.layout.list_footerview, mList, false); mList.setVisibility(View.INVISIBLE); mList.addFooterView(mFootview); mFootview.setClickable(false); mList.setFooterDividersEnabled(false); mList.setOnItemClickListener(this); mAdapter = new MentionsAdapter(this, contentList, data, commentIdList); mList.setAdapter(mAdapter); } @Override public void onClick(View v) { if (mFootview == v) { if (shouldReload) { mFootview.findViewById(R.id.list_footview_progress).setVisibility(View.VISIBLE); ((TextView) mFootview.findViewById(R.id.list_footview_text)).setText(R.string.loading); requestData(pageIndex, false); } } else if (mTimeOutText == v) { if (AcApp.getUser() != null) { pageIndex = 1; requestData(pageIndex, true); } } } private void requestData(int page, boolean requestNewData) { if (requestNewData) { mTimeOutText.setVisibility(View.GONE); if (mAdapter == null || mAdapter.isEmpty()) mLoadingBar.setVisibility(View.VISIBLE); } isloading = true; Request<?> request = new MentionsRequest(page, mCookies, listener, error); request.setShouldCache(true); request.setTag(TAG); AcApp.addRequest(request); } @Override protected void onDestroy() { super.onDestroy(); AcApp.cancelAllRequest(TAG); } private Listener<Mentions> listener = new Listener<Mentions>() { @Override public void onResponse(Mentions response) { isloading = false; mPtr.onRefreshComplete(); if (response.totalCount == 0) { mLoadingBar.setVisibility(View.GONE); mTimeOutText.setVisibility(View.VISIBLE); mList.setVisibility(View.GONE); Drawable drawable = getResources().getDrawable(R.drawable.ac_16); drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); mTimeOutText.setCompoundDrawables(drawable, null, null, null); mTimeOutText.setText(R.string.no_more); return; } if (response.page == 1) { if (mAdapter != null) mAdapter.notifyDataSetInvalidated(); data.clear(); commentIdList.clear(); contentList.clear(); mLoadingBar.setVisibility(View.GONE); mList.setVisibility(View.VISIBLE); } ArrayUtil.putAll(response.commentArr, data); commentIdList.addAll(ArrayUtil.asList(response.commentList)); contentList.addAll(response.contentList); hasNextPage = response.nextPage > response.page; if (data != null && data.size() > 0) { mAdapter.setData(contentList, data, commentIdList); shouldReload = false; } } }; protected int pageIndex; private ErrorListener error = new ErrorListener() { @Override public void onErrorResponse(VolleyError error) { if (pageIndex > 1) { shouldReload = true; mFootview.findViewById(R.id.list_footview_progress).setVisibility(View.GONE); TextView textview = (TextView) mFootview.findViewById(R.id.list_footview_text); textview.setText(R.string.reloading); } else { mLoadingBar.setVisibility(View.GONE); mTimeOutText.setVisibility(View.VISIBLE); mList.setVisibility(View.VISIBLE); } } }; public static class MentionsRequest extends UsingCookiesRequest<Mentions> { public MentionsRequest(int page, Cookie[] cookies, Listener<Mentions> listener, ErrorListener errorListner) { super(ArticleApi.getMentionsUrl(10, page), cookies, Mentions.class, listener, errorListner); } @Override protected Response<Mentions> parseNetworkResponse(NetworkResponse response) { try { String json = new String(response.data, HttpHeaderParser.parseCharset(response.headers)); JSONObject parseObject = JSON.parseObject(json); Mentions comments = JSON.toJavaObject(parseObject, Mentions.class); JSONObject commentContentArr = parseObject.getJSONObject("commentContentArr"); comments.commentArr = parseContentAttr(commentContentArr); return Response.success(comments, cache(response)); } catch (Exception e) { Log.e(TAG, "parse mentions error", e); return Response.error(new ParseError(e)); } } private SparseArray<Comment> parseContentAttr(JSONObject commentContentArr) { SparseArray<Comment> attr = new SparseArray<Comment>(); for (Iterator<String> iterator = commentContentArr.keySet().iterator(); iterator.hasNext();) { String key = iterator.next(); JSONObject content = commentContentArr.getJSONObject(key); Comment comment = JSON.toJavaObject(content, Comment.class); attr.put(comment.cid, comment); } return attr; } private Cache.Entry cache(NetworkResponse response) { return Connectivity.newCache(response, 120); } } public static void start(Context context) { Intent intent = new Intent(context, MentionActivity.class); context.startActivity(intent); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { try { CommentsActivity.start(this, (int) parent.getItemIdAtPosition(position)); } catch (IndexOutOfBoundsException e) { onClick(mFootview); } } }