public
class FragmentFile
extends FragmentBase
implements OnItemClickListener {
private FileAdapter mAdapter;
private TextView first_letter_overlay;
private ImageView alphabet_scroller;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v =
super.onCreateView(inflater, container, savedInstanceState);
//
~~~~~~~~~ 绑定控件
first_letter_overlay = (TextView) v.findViewById(R.id.first_letter_overlay);
alphabet_scroller = (ImageView) v.findViewById(R.id.alphabet_scroller);
//
~~~~~~~~~ 绑定事件
alphabet_scroller.setClickable(
true);
alphabet_scroller.setOnTouchListener(asOnTouch);
mListView.setOnItemClickListener(
this);
//
~~~~~~~~~ 加载数据
if (
new SQLiteHelper(getActivity()).isEmpty())
new ScanVideoTask().execute();
else
new DataTask().execute();
return v;
}
/**
单击启动播放
*/
@Override
public
void onItemClick(AdapterView<?> parent, View view,
int position,
long id) {
final PFile f = mAdapter.getItem(position);
Intent intent =
new Intent(getActivity(), VideoViewDemo.
class);
intent.putExtra("path", f.path);
startActivity(intent);
}
private
class DataTask
extends AsyncTask<Void, Void, ArrayList<PFile>> {
@Override
protected
void onPreExecute() {
super.onPreExecute();
mLoadingLayout.setVisibility(View.VISIBLE);
mListView.setVisibility(View.GONE);
}
@Override
protected ArrayList<PFile> doInBackground(Void... params) {
return FileBusiness.getAllSortFiles(getActivity());
}
@Override
protected
void onPostExecute(ArrayList<PFile> result) {
super.onPostExecute(result);
mAdapter =
new FileAdapter(getActivity(), FileBusiness.getAllSortFiles(getActivity()));
mListView.setAdapter(mAdapter);
mLoadingLayout.setVisibility(View.GONE);
mListView.setVisibility(View.VISIBLE);
}
}
/**
扫描SD卡
*/
private
class ScanVideoTask
extends AsyncTask<Void, File, ArrayList<PFile>> {
private ProgressDialog pd;
private ArrayList<File> files =
new ArrayList<File>();
@Override
protected
void onPreExecute() {
super.onPreExecute();
pd =
new ProgressDialog(getActivity());
pd.setMessage("正在扫描视频文件...");
pd.show();
}
@Override
protected ArrayList<PFile> doInBackground(Void... params) {
//
~~~ 遍历文件夹
eachAllMedias(Environment.getExternalStorageDirectory());
//
~~~ 入库
SQLiteHelper sqlite =
new SQLiteHelper(getActivity());
SQLiteDatabase db = sqlite.getWritableDatabase();
try {
db.beginTransaction();
SQLiteStatement stat = db.compileStatement("INSERT INTO files(" + FilesColumns.COL_TITLE + "," + FilesColumns.COL_TITLE_PINYIN + "," + FilesColumns.COL_PATH + "," + FilesColumns.COL_LAST_ACCESS_TIME + ") VALUES(?,?,?,?)");
for (File f : files) {
String name = FileUtils.getFileNameNoEx(f.getName());
int index = 1;
stat.bindString(index++, name);
//
title
stat.bindString(index++, PinyinUtils.chineneToSpell(name));
//
title_pinyin
stat.bindString(index++, f.getPath());
//
path
stat.bindLong(index++, System.currentTimeMillis());
//
last_access_time
stat.execute();
}
db.setTransactionSuccessful();
}
catch (BadHanyuPinyinOutputFormatCombination e) {
e.printStackTrace();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
db.endTransaction();
db.close();
}
//
~~~ 查询数据
return FileBusiness.getAllSortFiles(getActivity());
}
@Override
protected
void onProgressUpdate(
final File... values) {
File f = values[0];
files.add(f);
pd.setMessage(f.getName());
}
/**
遍历所有文件夹，查找出视频文件
*/
public
void eachAllMedias(File f) {
if (f !=
null && f.exists() && f.isDirectory()) {
File[] files = f.listFiles();
if (files !=
null) {
for (File file : f.listFiles()) {
if (file.isDirectory()) {
eachAllMedias(file);
}
else
if (file.exists() && file.canRead() && FileUtils.isVideoOrAudio(file)) {
publishProgress(file);
}
}
}
}
}
@Override
protected
void onPostExecute(ArrayList<PFile> result) {
super.onPostExecute(result);
mAdapter =
new FileAdapter(getActivity(), result);
mListView.setAdapter(mAdapter);
pd.dismiss();
}
}
private
class FileAdapter
extends ArrayAdapter<PFile> {
public FileAdapter(Context ctx, ArrayList<PFile> l) {
super(ctx, l);
}
@Override
public View getView(
int position, View convertView, ViewGroup parent) {
final PFile f = getItem(position);
if (convertView ==
null) {
final LayoutInflater mInflater = getActivity().getLayoutInflater();
convertView = mInflater.inflate(R.layout.fragment_file_item,
null);
}
((TextView) convertView.findViewById(R.id.title)).setText(f.title);
return convertView;
}
}
/**
* A-Z
*/
private OnTouchListener asOnTouch =
new OnTouchListener() {
@Override
public
boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
//
0
alphabet_scroller.setPressed(
true);
first_letter_overlay.setVisibility(View.VISIBLE);
mathScrollerPosition(event.getY());
break;
case MotionEvent.ACTION_UP:
//
1
alphabet_scroller.setPressed(
false);
first_letter_overlay.setVisibility(View.GONE);
break;
case MotionEvent.ACTION_MOVE:
mathScrollerPosition(event.getY());
break;
}
return
false;
}
};
/**
* 显示字符
*
*
@param
y
*/
private
void mathScrollerPosition(
float y) {
int height = alphabet_scroller.getHeight();
float charHeight = height / 28.0f;
char c = 'A';
if (y < 0)
y = 0;
else
if (y > height)
y = height;
int index = (
int) (y / charHeight) - 1;
if (index < 0)
index = 0;
else
if (index > 25)
index = 25;
String key = String.valueOf((
char) (c + index));
first_letter_overlay.setText(key);
int position = 0;
if (index == 0)
mListView.setSelection(0);
else
if (index == 25)
mListView.setSelection(mAdapter.getCount() - 1);
else {
for (PFile item : mAdapter.getAll()) {
if (item.title_pinyin.startsWith(key)) {
mListView.setSelection(position);
break;
}
position++;
}
}
}
