Java tutorial
/* * Copyright (C) 2014 Michell Bak * * 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.miz.mizuu.fragments; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap.Config; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v7.app.ActionBarActivity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import com.github.ksoichiro.android.observablescrollview.ObservableGridView; import com.google.android.youtube.player.YouTubeApiServiceUtil; import com.google.android.youtube.player.YouTubeInitializationResult; import com.google.android.youtube.player.YouTubeStandalonePlayer; import com.miz.functions.AsyncTask; import com.miz.functions.CoverItem; import com.miz.functions.MizLib; import com.miz.mizuu.MizuuApplication; import com.miz.mizuu.R; import com.miz.utils.TypefaceUtils; import com.miz.utils.ViewUtils; import com.squareup.picasso.Picasso; import org.json.JSONArray; import org.json.JSONObject; import java.util.ArrayList; public class WebVideoFragment extends Fragment { private int mImageThumbSize, mImageThumbSpacing; private ImageAdapter mAdapter; private ArrayList<WebVideo> mVideos = new ArrayList<WebVideo>(); private ObservableGridView mGridView = null; private ProgressBar mProgressBar; private String mType; private Picasso mPicasso; private Config mConfig; private Context mContext; /** * Empty constructor as per the Fragment documentation */ public WebVideoFragment() { } public static WebVideoFragment newInstance(String type) { WebVideoFragment pageFragment = new WebVideoFragment(); Bundle bundle = new Bundle(); bundle.putString("type", type); pageFragment.setArguments(bundle); return pageFragment; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mImageThumbSize = (int) (getResources().getDimensionPixelSize(R.dimen.backdrop_thumbnail_width) * 1.25); mImageThumbSpacing = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_spacing); mPicasso = MizuuApplication.getPicasso(getActivity()); mConfig = MizuuApplication.getBitmapConfig(); mContext = getActivity().getApplicationContext(); mType = getArguments().getString("type"); if (mType.equals(getString(R.string.choiceYouTube))) { new GetYouTubeVideos().execute(); } else if (mType.equals(getString(R.string.choiceReddit))) { new RedditSearch().execute(); } else { // Ted Talks new TEDSearch().execute(); } } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.backdrop_grid_fragment, container, false); } @Override public void onViewCreated(View v, Bundle savedInstanceState) { super.onViewCreated(v, savedInstanceState); mProgressBar = (ProgressBar) v.findViewById(R.id.progress); if (mVideos.size() > 0) mProgressBar.setVisibility(View.GONE); // Hack to remove the ProgressBar on orientation change mAdapter = new ImageAdapter(getActivity()); mGridView = (ObservableGridView) v.findViewById(R.id.gridView); mGridView.setClipToPadding(false); mGridView.setAdapter(mAdapter); mGridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { if (mAdapter.getNumColumns() == 0) { final int numColumns = (int) Math .floor(mGridView.getWidth() / (mImageThumbSize + mImageThumbSpacing)); mGridView.setColumnWidth(mImageThumbSize); if (numColumns > 0) { mAdapter.setNumColumns(numColumns); } } } }); mGridView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { if (YouTubeApiServiceUtil.isYouTubeApiServiceAvailable(getActivity()) .equals(YouTubeInitializationResult.SUCCESS)) { Intent intent = YouTubeStandalonePlayer.createVideoIntent(getActivity(), MizLib.getYouTubeApiKey(getActivity()), mVideos.get(arg2).getId(), 0, false, true); startActivity(intent); } else { Intent intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse("http://www.youtube.com/watch?v=" + mVideos.get(arg2).getId())); startActivity(intent); } } }); } @Override public void onResume() { super.onResume(); if (mAdapter != null) mAdapter.notifyDataSetChanged(); } @Override public void onStart() { super.onStart(); ((ActionBarActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true); } private class ImageAdapter extends BaseAdapter { private LayoutInflater inflater; private final Context mContext; private int mNumColumns = 0; public ImageAdapter(Context context) { mContext = context; inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } @Override public int getCount() { return mVideos.size(); } @Override public Object getItem(int position) { return mVideos.get(position).getUrl(); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup container) { final WebVideo mWebVideo = mVideos.get(position); CoverItem holder; if (convertView == null) { convertView = inflater.inflate(R.layout.webvideo_item, container, false); holder = new CoverItem(); holder.cover = (ImageView) convertView.findViewById(R.id.cover); holder.text = (TextView) convertView.findViewById(R.id.text); holder.text.setTypeface(TypefaceUtils.getRobotoMedium(mContext)); convertView.setTag(holder); } else { holder = (CoverItem) convertView.getTag(); } holder.text.setText(mWebVideo.getTitle()); mPicasso.load(mWebVideo.getUrl()).placeholder(R.color.card_background_dark).error(R.drawable.nobackdrop) .config(mConfig).into(holder.cover); return convertView; } public void setNumColumns(int numColumns) { mNumColumns = numColumns; } public int getNumColumns() { return mNumColumns; } } protected class GetYouTubeVideos extends AsyncTask<String, String, String> { @Override protected String doInBackground(String... params) { mVideos.clear(); try { JSONObject jObject = MizLib.getJSONObject(mContext, "http://gdata.youtube.com/feeds/api/standardfeeds/most_popular?time=today&alt=json&start-index=1&max-results=50"); JSONObject jdata = jObject.getJSONObject("feed"); JSONArray aitems = jdata.getJSONArray("entry"); for (int i = 0; i < aitems.length(); i++) { JSONObject item = aitems.getJSONObject(i); JSONObject id = item.getJSONObject("id"); mVideos.add(new WebVideo(item.getJSONObject("title").getString("$t"), id.getString("$t").substring(id.getString("$t").lastIndexOf("videos/") + 7, id.getString("$t").length()), item.getJSONObject("media$group").getJSONArray("media$thumbnail").getJSONObject(0) .getString("url"))); } } catch (Exception e) { } return null; } @Override protected void onPostExecute(String result) { if (isAdded()) { mProgressBar.setVisibility(View.GONE); mAdapter.notifyDataSetChanged(); } } } protected class RedditSearch extends AsyncTask<String, String, String> { @Override protected String doInBackground(String... params) { mVideos.clear(); try { JSONObject jsonObject = MizLib.getJSONObject(mContext, "http://www.reddit.com/r/videos/hot.json?sort=hot&limit=100"); JSONArray jsonArray = jsonObject.getJSONObject("data").getJSONArray("children"); for (int i = 0; i < jsonArray.length(); i++) { if (jsonArray.getJSONObject(i).getJSONObject("data").getString("domain").equals("youtube.com") || jsonArray.getJSONObject(i).getJSONObject("data").getString("domain") .equals("youtu.be")) { String youtubeId = MizLib .getYouTubeId(jsonArray.getJSONObject(i).getJSONObject("data").getString("url")); if (!youtubeId.isEmpty()) { mVideos.add(new WebVideo( jsonArray.getJSONObject(i).getJSONObject("data").getString("title"), youtubeId, jsonArray.getJSONObject(i).getJSONObject("data").getJSONObject("media") .getJSONObject("oembed").getString("thumbnail_url"))); } } } } catch (Exception e) { } return null; } @Override protected void onPostExecute(String result) { if (isAdded()) { mProgressBar.setVisibility(View.GONE); mAdapter.notifyDataSetChanged(); } } } protected class TEDSearch extends AsyncTask<String, String, String> { @Override protected String doInBackground(String... params) { mVideos.clear(); try { JSONObject jObject = MizLib.getJSONObject(mContext, "http://gdata.youtube.com/feeds/api/users/TEDtalksDirector/uploads?alt=json&start-index=1&max-results=50"); JSONObject jdata = jObject.getJSONObject("feed"); JSONArray aitems = jdata.getJSONArray("entry"); for (int i = 0; i < aitems.length(); i++) { JSONObject item = aitems.getJSONObject(i); JSONObject id = item.getJSONObject("id"); mVideos.add(new WebVideo(item.getJSONObject("title").getString("$t"), id.getString("$t").substring(id.getString("$t").lastIndexOf("videos/") + 7, id.getString("$t").length()), item.getJSONObject("media$group").getJSONArray("media$thumbnail").getJSONObject(0) .getString("url"))); } } catch (Exception e) { } return null; } @Override protected void onPostExecute(String result) { if (isAdded()) { mProgressBar.setVisibility(View.GONE); mAdapter.notifyDataSetChanged(); } } } private class WebVideo { String title, id, url; public WebVideo(String title, String id, String url) { this.title = title; this.id = id; this.url = url; } public String getTitle() { return title; } public String getId() { return id; } public String getUrl() { return url; } } }