package com.airplayer.activity.fetchpicture;
import android.app.ProgressDialog;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar;
import android.support.v4.app.DialogFragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.widget.EditText;
import android.support.v7.widget.SearchView;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.airplayer.listener.EasyRecyclerViewListener;
import com.airplayer.multitask.DownloadURLTask;
import com.airplayer.R;
import com.airplayer.adapter.AirAdapter;
import com.airplayer.fragment.dialog.ReplacePicDialogFragment;
import com.airplayer.model.Picture;
import com.airplayer.util.StorageUtils;
import com.airplayer.util.StringUtils;
import com.facebook.drawee.view.SimpleDraweeView;
import java.util.ArrayList;
import java.util.List;
/**
* Created by ZiyiTsang on 15/7/12.
* Activity that start when user click the top picture of
* { @link com.airplayer.fragment.singleitem.AlbumFragment } which is an album art
* or { @link com.airplayer.fragment.singleitem.ArtistFragment } which is an artist picture
* This activity will search a picture about the item that pass with intent before start
* The item is a { @link com.airplayer.model.PictureGettable } instance,
* in this app is an { @link com.airplayer.model.Album } or an { @link com.airplayer.model.Artist }
*/
public abstract class FetchPictureActivity extends AppCompatActivity {
/**
* Key of { @link #mItem }
* { @link #mItem } 的键
*/
public static final String EXTRA_QUERY_KEYWORD = "extra_query_keyword";
private String mQueryKeyword = null;
public static final String EXTRA_SAVE_NAME = "extra_save_name";
private String mSaveName;
/**
* Instance of { @link com.airplayer.model.PictureGettable }, pass when start { @link com.airplayer.activity.FetchPictureActivity }.
* { @link com.airplayer.model.PictureGettable } 的实例, 启动{ @link com.airplayer.activity.FetchPictureActivity } 时传入。
*/
/**
* a link to search a album art, use as a param to execute { @link #executeDownloadTask }.
* 查询专辑封面的链接，执行 { @link #executeDownloadTask } 时作为传入参数。
*/
public static final String SEARCH_LINK_ALBUM_ART = "https://api.douban.com/v2/music/search?q=";
/**
* a link to search a artist picture, use as a param to execute { @link com.airplayer.multitask.DownloadURLTask }.
* 查询艺人图片的链接，执行 { @link com.airplayer.multitask.DownloadURLTask } 时作为传入参数。
*/
public static final String SEARCH_LINK_ARTIST_PICTURE = "http://image.baidu.com/i?tn=baiduimagejson&word=";
/**
* Image url array list fetch from { @link com.airplayer.multitask.DownloadURLTask }.
* 图片 url 的数组列表，从 { @link com.airplayer.multitask.DownloadURLTask } 获取。
*/
private ArrayList<Picture> mPictureList = new ArrayList<>();
// handle download image task
/**
* What value of message that will be sent when { @link #downloadImage } download succeed.
* 在 { @link #downloadImage } 方法下载成功时发送的 message 的 what 值。
*/
private static final int MSG_DOWNLOAD_PICTURE_SUCCEED = 1;
private static final int MSG_DOWNLOAD_PICTURE_FAIL = 2;
/**
* What value of message that will be sent when { @link com.airplayer.multitask.DownloadURLTask } download fail.
* 在 { @link com.airplayer.multitask.DownloadURLTask } 下载失败时发送的 message 的 what 值。
*/
private static final int MSG_DOWNLOAD_IMAGE_URL_FAIL = 3;
private static final int MSG_NO_RESULT_FOUND_OR_DECODE_FAIL = 4;
private ProgressDialog progress;
/**
* If msg is { @link #MSG_DOWNLOAD_PICTURE_SUCCEED } dismiss progress and set resultCode to RESULT_OK.
* If msg is { @link #MSG_DOWNLOAD_IMAGE_URL_FAIL } make a toast to tell user.
* 如果 msg 是 { @link #MSG_DOWNLOAD_PICTURE_SUCCEED } 撤销进度条并设置 resultCode 为 RESULT_OK。
* 如果 msg 是 { @link #MSG_DOWNLOAD_IMAGE_URL_FAIL } 发出一条 toast 告诉用户下载失败。
*/
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (progress != null) {
progress.dismiss();
}
String toastMessage;
switch (msg.what) {
case MSG_DOWNLOAD_PICTURE_SUCCEED:
setResult(RESULT_OK, null);
onBackPressed();
return;
case MSG_DOWNLOAD_PICTURE_FAIL:
toastMessage = getResources().getString(R.string.toast_picture_source_not_exist);
break;
case MSG_DOWNLOAD_IMAGE_URL_FAIL:
if (mSwipeRefreshLayout.isRefreshing()) mSwipeRefreshLayout.setRefreshing(false);
toastMessage = getResources().getString(R.string.toast_download_fail);
break;
case MSG_NO_RESULT_FOUND_OR_DECODE_FAIL:
if (mSwipeRefreshLayout.isRefreshing()) mSwipeRefreshLayout.setRefreshing(false);
toastMessage = getResources().getString(R.string.toast_no_result_found_or_decode_fail);
break;
default:
return;
}
Snackbar.make(mCoordinatorLayout, toastMessage, Snackbar.LENGTH_LONG).setAction("Retry", new View.OnClickListener() {
@Override
public void onClick(View v) {
if (adapter.getList().size() > 0) {
onFetchMorePictures(nextPage);
} else {
executeDownloadTask(MODE_DOWNLOAD_REPLACE, null);
}
}
}).show();
}
};
/**
* New thread to download picture from @param url to external storage and show a progress.
* When download succeed send a { @link #MSG_DOWNLOAD_PICTURE_SUCCEED } message.
* 新建一个线程下载 @param url 中的图片到手机扩展储存，并现实一个进度条。
* 新建一个线程下载 url(传入参数) 中的图片到手机扩展储存，并出现一个进度条。
* 当下载成功时，发送一个 { @link #MSG_DOWNLOAD_PICTURE_SUCCEED } message 。
* @param url the url of picture when it was clicked. 被点击的图片的url
*/
private void downloadImage(final String url) {
progress = new ProgressDialog(FetchPictureActivity.this);
progress.setMessage("Saving picture");
progress.show();
new Thread(new Runnable() {
@Override
public void run() {
Message msg = new Message();
try {
StorageUtils.saveImage(FetchPictureActivity.this,
mSaveName + ".jpg", url);
msg.what = MSG_DOWNLOAD_PICTURE_SUCCEED;
} catch (Exception e) {
msg.what = MSG_DOWNLOAD_PICTURE_FAIL;
} finally {
handler.sendMessage(msg);
}
}
}).start();
}
protected static final int MODE_DOWNLOAD_REPLACE = 0;
protected static final int MODE_DOWNLOAD_ADD = 1;
// ===== views and widgets =====
// ----- Root CoordinatorLayout -----
private CoordinatorLayout mCoordinatorLayout;
// ----- RecyclerView -----
private RecyclerView mRecyclerView;
// ----- RecyclerAdapter -----
private FPAdapter adapter;
// ----- SwipeRefreshLayout -----
private SwipeRefreshLayout mSwipeRefreshLayout;
// ----- Toolbar -----
private Toolbar mToolbar;
private int nextPage = 2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.recycler_swipe_refresh);
mCoordinatorLayout = (CoordinatorLayout) findViewById(R.id.fetch_picture_root_view);
if (mQueryKeyword == null) {
mQueryKeyword = getIntent().getStringExtra(EXTRA_QUERY_KEYWORD);
mSaveName = getIntent().getStringExtra(EXTRA_SAVE_NAME);
}
mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh_layout);
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
executeDownloadTask(MODE_DOWNLOAD_REPLACE);
}
});
mSwipeRefreshLayout.setColorSchemeResources(R.color.air_accent_color);
// ===== setup toolbar =====
mToolbar = (Toolbar) findViewById(R.id.collapsing_toolbar);
// ----- toolbar title -----
mToolbar.setTitle(mQueryKeyword);
// ----- toolbar navigation button -----
mToolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onBackPressed();
}
});
// ----- toolbar menu search action -----
mToolbar.inflateMenu(R.menu.menu_search);
mToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
if (item.getItemId() == R.id.action_search) {
SearchManager manager = (SearchManager) getSystemService(SEARCH_SERVICE);
SearchView searchView = (SearchView) item.getActionView();
searchView.setSearchableInfo(manager.getSearchableInfo(getComponentName()));
((EditText) searchView.findViewById(android.support.v7.appcompat.R.id.search_src_text))
.setHintTextColor(getResources().getColor(R.color.air_text_and_icon));
return true;
}
return false;
}
});
// ===== RecyclerView =====
// ----- setup RecyclerView -----
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
final GridLayoutManager manager = new GridLayoutManager(this, 2);
// ----- LayoutManager and Adapter -----
manager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
return position == 0 ? manager.getSpanCount() : 1;
}
});
mRecyclerView.setLayoutManager(manager);
setupAdapter();
// ----- ScrollListener -----
mRecyclerView.addOnScrollListener(new EasyRecyclerViewListener() {
@Override
public void onScrollToBottom() {
onFetchMorePictures(nextPage);
nextPage++;
}
});
}
@Override
protected void onResume() {
super.onResume();
executeDownloadTask(MODE_DOWNLOAD_ADD);
}
@Override
protected void onNewIntent(Intent intent) {
if (intent.getAction().equals(Intent.ACTION_SEARCH)) {
mQueryKeyword = intent.getStringExtra(SearchManager.QUERY);
mToolbar.setTitle(mQueryKeyword);
}
executeDownloadTask(MODE_DOWNLOAD_REPLACE);
}
/**
* Adapter of RecyclerView has a head padding, two columns and every item is a { @link #SimpleDraweeView }
* RecyclerView 的 adapter 头部有一部分空白填充，两列每一项都是一个 { @link #SimpleDraweeView }
*/
private class FPAdapter extends AirAdapter {
public FPAdapter(Context context, List<?> list) {
super(context, list);
}
@Override
public AirItemViewHolder onCreateItemViewHolder(ViewGroup parent) {
return new ResponseItemViewHolder(getLayoutInflater()
.inflate(R.layout.recycler_item_response, parent, false));
}
@Override
public void onBindItemViewHolder(AirItemViewHolder itemHolder, int position) {
if (itemHolder instanceof ResponseItemViewHolder) {
ResponseItemViewHolder item = (ResponseItemViewHolder) itemHolder;
item.image.setImageURI(Uri.parse(((Picture)getList().get(position - 1)).getThumbUrl()));
}
}
private class ResponseItemViewHolder extends AirItemViewHolder {
SimpleDraweeView image;
public ResponseItemViewHolder(View itemView) {
super(itemView);
image = (SimpleDraweeView) itemView.findViewById(R.id.simple_drawee_view_item);
}
}
}
protected void executeDownloadTask(int downloadMod) {
this.executeDownloadTask(downloadMod, null);
}
protected void executeDownloadTask(final int downloadMod, String otherParam) {
if (!mSwipeRefreshLayout.isRefreshing()) {
mSwipeRefreshLayout.setRefreshing(true);
}
DownloadURLTask task = new DownloadURLTask() {
@Override
public String getUrl() {
return getSearchLink();
}
@Override
public ArrayList<Picture> decodeJson(String response) {
return onDecodeJson(response);
}
@Override
public void onError(Exception e) {
sendErrorMessage(MSG_DOWNLOAD_IMAGE_URL_FAIL);
}
@Override
public void onFinish(ArrayList<Picture> list) {
if (list == null) {
sendErrorMessage(MSG_NO_RESULT_FOUND_OR_DECODE_FAIL);
return;
}
switch (downloadMod) {
case MODE_DOWNLOAD_ADD:
for (Picture p : list) {
mPictureList.add(p);
}
adapter.notifyDataSetChanged();
break;
case MODE_DOWNLOAD_REPLACE:
mPictureList = list;
setupAdapter();
nextPage = 2;
break;
default:
break;
}
mSwipeRefreshLayout.setRefreshing(false);
}
};
task.execute(StringUtils.encodeKeyword(mQueryKeyword), otherParam);
}
/**
* A convenient method to setup or update data of adapter of RecyclerView for calling more than once.
* 一个封装好的简易方法来配置 RecyclerView adapter，以便多次调用
*/
private void setupAdapter() {
adapter = new FPAdapter(FetchPictureActivity.this, mPictureList);
adapter.setOnItemClickListener(new AirAdapter.OnItemClickListener() {
@Override
public void onItemClicked(View view, final int position) {
ReplacePicDialogFragment dialog = new ReplacePicDialogFragment() {
@Override
public void onOkClick(View view) {
downloadImage(mPictureList.get(position - 1).getObjUrl());
dismiss();
}
};
dialog.setStyle(DialogFragment.STYLE_NO_TITLE, 0);
dialog.show(getSupportFragmentManager(), null);
}
});
mRecyclerView.setAdapter(adapter);
}
/**
* package method to send error message for calling more than once
* 封装发送错误信息的方法以便多次调用
*/
private void sendErrorMessage(int what) {
Message msg = new Message();
msg.what = what;
handler.sendMessage(msg);
}
public abstract String getSearchLink();
public abstract ArrayList<Picture> onDecodeJson(String response);
public abstract void onFetchMorePictures(int nextPage);
}