| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * 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.android.documentsui; |
| |
| import static com.android.documentsui.DocumentsActivity.TAG; |
| import static com.android.documentsui.DocumentsActivity.State.ACTION_MANAGE; |
| import static com.android.documentsui.DocumentsActivity.State.MODE_GRID; |
| import static com.android.documentsui.DocumentsActivity.State.MODE_LIST; |
| import static com.android.documentsui.model.DocumentInfo.getCursorInt; |
| import static com.android.documentsui.model.DocumentInfo.getCursorLong; |
| import static com.android.documentsui.model.DocumentInfo.getCursorString; |
| |
| import android.app.Fragment; |
| import android.app.FragmentManager; |
| import android.app.FragmentTransaction; |
| import android.app.LoaderManager.LoaderCallbacks; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.Loader; |
| import android.database.Cursor; |
| import android.graphics.Bitmap; |
| import android.graphics.Point; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Bundle; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.text.format.DateUtils; |
| import android.text.format.Formatter; |
| import android.text.format.Time; |
| import android.util.Log; |
| import android.util.SparseBooleanArray; |
| import android.view.ActionMode; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.AbsListView; |
| import android.widget.AbsListView.MultiChoiceModeListener; |
| import android.widget.AdapterView; |
| import android.widget.AdapterView.OnItemClickListener; |
| import android.widget.BaseAdapter; |
| import android.widget.GridView; |
| import android.widget.ImageView; |
| import android.widget.ListView; |
| import android.widget.TextView; |
| import android.widget.Toast; |
| |
| import com.android.documentsui.DocumentsActivity.State; |
| import com.android.documentsui.model.DocumentInfo; |
| import com.android.documentsui.model.RootInfo; |
| import com.android.internal.util.Predicate; |
| import com.google.android.collect.Lists; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * Display the documents inside a single directory. |
| */ |
| public class DirectoryFragment extends Fragment { |
| |
| private View mEmptyView; |
| private ListView mListView; |
| private GridView mGridView; |
| |
| private AbsListView mCurrentView; |
| |
| private Predicate<DocumentInfo> mFilter; |
| |
| public static final int TYPE_NORMAL = 1; |
| public static final int TYPE_SEARCH = 2; |
| public static final int TYPE_RECENT_OPEN = 3; |
| |
| private int mType = TYPE_NORMAL; |
| |
| private Point mThumbSize; |
| |
| private DocumentsAdapter mAdapter; |
| private LoaderCallbacks<DirectoryResult> mCallbacks; |
| |
| private static final String EXTRA_TYPE = "type"; |
| private static final String EXTRA_AUTHORITY = "authority"; |
| private static final String EXTRA_ROOT_ID = "rootId"; |
| private static final String EXTRA_DOC_ID = "docId"; |
| private static final String EXTRA_QUERY = "query"; |
| |
| private static AtomicInteger sLoaderId = new AtomicInteger(4000); |
| |
| private int mLastSortOrder = -1; |
| |
| private final int mLoaderId = sLoaderId.incrementAndGet(); |
| |
| public static void showNormal(FragmentManager fm, Uri uri) { |
| show(fm, TYPE_NORMAL, uri.getAuthority(), null, DocumentsContract.getDocumentId(uri), null); |
| } |
| |
| public static void showSearch(FragmentManager fm, Uri uri, String query) { |
| show(fm, TYPE_SEARCH, uri.getAuthority(), null, DocumentsContract.getDocumentId(uri), |
| query); |
| } |
| |
| public static void showRecentsOpen(FragmentManager fm) { |
| show(fm, TYPE_RECENT_OPEN, null, null, null, null); |
| } |
| |
| private static void show(FragmentManager fm, int type, String authority, String rootId, |
| String docId, String query) { |
| final Bundle args = new Bundle(); |
| args.putInt(EXTRA_TYPE, type); |
| args.putString(EXTRA_AUTHORITY, authority); |
| args.putString(EXTRA_ROOT_ID, rootId); |
| args.putString(EXTRA_DOC_ID, docId); |
| args.putString(EXTRA_QUERY, query); |
| |
| final DirectoryFragment fragment = new DirectoryFragment(); |
| fragment.setArguments(args); |
| |
| final FragmentTransaction ft = fm.beginTransaction(); |
| ft.replace(R.id.container_directory, fragment); |
| ft.commitAllowingStateLoss(); |
| } |
| |
| public static DirectoryFragment get(FragmentManager fm) { |
| // TODO: deal with multiple directories shown at once |
| return (DirectoryFragment) fm.findFragmentById(R.id.container_directory); |
| } |
| |
| @Override |
| public View onCreateView( |
| LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { |
| final Context context = inflater.getContext(); |
| final View view = inflater.inflate(R.layout.fragment_directory, container, false); |
| |
| mEmptyView = view.findViewById(android.R.id.empty); |
| |
| mListView = (ListView) view.findViewById(R.id.list); |
| mListView.setOnItemClickListener(mItemListener); |
| mListView.setMultiChoiceModeListener(mMultiListener); |
| |
| mGridView = (GridView) view.findViewById(R.id.grid); |
| mGridView.setOnItemClickListener(mItemListener); |
| mGridView.setMultiChoiceModeListener(mMultiListener); |
| |
| return view; |
| } |
| |
| @Override |
| public void onActivityCreated(Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| |
| final Context context = getActivity(); |
| |
| mAdapter = new DocumentsAdapter(); |
| mType = getArguments().getInt(EXTRA_TYPE); |
| |
| mCallbacks = new LoaderCallbacks<DirectoryResult>() { |
| @Override |
| public Loader<DirectoryResult> onCreateLoader(int id, Bundle args) { |
| final State state = getDisplayState(DirectoryFragment.this); |
| |
| final String authority = getArguments().getString(EXTRA_AUTHORITY); |
| final String rootId = getArguments().getString(EXTRA_ROOT_ID); |
| final String docId = getArguments().getString(EXTRA_DOC_ID); |
| final String query = getArguments().getString(EXTRA_QUERY); |
| |
| Uri contentsUri; |
| switch (mType) { |
| case TYPE_NORMAL: |
| contentsUri = DocumentsContract.buildChildDocumentsUri(authority, docId); |
| return new DirectoryLoader(context, rootId, contentsUri, state.sortOrder); |
| case TYPE_SEARCH: |
| contentsUri = DocumentsContract.buildSearchDocumentsUri( |
| authority, docId, query); |
| return new DirectoryLoader(context, rootId, contentsUri, state.sortOrder); |
| case TYPE_RECENT_OPEN: |
| final RootsCache roots = DocumentsApplication.getRootsCache(context); |
| final List<RootInfo> matchingRoots = roots.getMatchingRoots(state); |
| return new RecentLoader(context, matchingRoots); |
| default: |
| throw new IllegalStateException("Unknown type " + mType); |
| |
| } |
| } |
| |
| @Override |
| public void onLoadFinished(Loader<DirectoryResult> loader, DirectoryResult result) { |
| mAdapter.swapCursor(result.cursor); |
| } |
| |
| @Override |
| public void onLoaderReset(Loader<DirectoryResult> loader) { |
| mAdapter.swapCursor(null); |
| } |
| }; |
| |
| updateDisplayState(); |
| } |
| |
| public void updateDisplayState() { |
| final State state = getDisplayState(this); |
| |
| if (mLastSortOrder != state.sortOrder) { |
| getLoaderManager().restartLoader(mLoaderId, null, mCallbacks); |
| mLastSortOrder = state.sortOrder; |
| } |
| |
| mListView.smoothScrollToPosition(0); |
| mGridView.smoothScrollToPosition(0); |
| |
| mListView.setVisibility(state.mode == MODE_LIST ? View.VISIBLE : View.GONE); |
| mGridView.setVisibility(state.mode == MODE_GRID ? View.VISIBLE : View.GONE); |
| |
| mFilter = new MimePredicate(state.acceptMimes); |
| |
| final int choiceMode; |
| if (state.allowMultiple) { |
| choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL; |
| } else { |
| choiceMode = ListView.CHOICE_MODE_NONE; |
| } |
| |
| final int thumbSize; |
| if (state.mode == MODE_GRID) { |
| thumbSize = getResources().getDimensionPixelSize(R.dimen.grid_width); |
| mListView.setAdapter(null); |
| mListView.setChoiceMode(ListView.CHOICE_MODE_NONE); |
| mGridView.setAdapter(mAdapter); |
| mGridView.setColumnWidth(getResources().getDimensionPixelSize(R.dimen.grid_width)); |
| mGridView.setNumColumns(GridView.AUTO_FIT); |
| mGridView.setChoiceMode(choiceMode); |
| mCurrentView = mGridView; |
| } else if (state.mode == MODE_LIST) { |
| thumbSize = getResources().getDimensionPixelSize(android.R.dimen.app_icon_size); |
| mGridView.setAdapter(null); |
| mGridView.setChoiceMode(ListView.CHOICE_MODE_NONE); |
| mListView.setAdapter(mAdapter); |
| mListView.setChoiceMode(choiceMode); |
| mCurrentView = mListView; |
| } else { |
| throw new IllegalStateException(); |
| } |
| |
| mThumbSize = new Point(thumbSize, thumbSize); |
| } |
| |
| private OnItemClickListener mItemListener = new OnItemClickListener() { |
| @Override |
| public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| final Cursor cursor = mAdapter.getItem(position); |
| final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); |
| if (mFilter.apply(doc)) { |
| ((DocumentsActivity) getActivity()).onDocumentPicked(doc); |
| } |
| } |
| }; |
| |
| private MultiChoiceModeListener mMultiListener = new MultiChoiceModeListener() { |
| @Override |
| public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| mode.getMenuInflater().inflate(R.menu.mode_directory, menu); |
| return true; |
| } |
| |
| @Override |
| public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| final State state = getDisplayState(DirectoryFragment.this); |
| |
| final MenuItem open = menu.findItem(R.id.menu_open); |
| final MenuItem share = menu.findItem(R.id.menu_share); |
| final MenuItem delete = menu.findItem(R.id.menu_delete); |
| |
| final boolean manageMode = state.action == ACTION_MANAGE; |
| open.setVisible(!manageMode); |
| share.setVisible(manageMode); |
| delete.setVisible(manageMode); |
| |
| return true; |
| } |
| |
| @Override |
| public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| final SparseBooleanArray checked = mCurrentView.getCheckedItemPositions(); |
| final ArrayList<DocumentInfo> docs = Lists.newArrayList(); |
| final int size = checked.size(); |
| for (int i = 0; i < size; i++) { |
| if (checked.valueAt(i)) { |
| final Cursor cursor = mAdapter.getItem(checked.keyAt(i)); |
| final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); |
| docs.add(doc); |
| } |
| } |
| |
| final int id = item.getItemId(); |
| if (id == R.id.menu_open) { |
| DocumentsActivity.get(DirectoryFragment.this).onDocumentsPicked(docs); |
| mode.finish(); |
| return true; |
| |
| } else if (id == R.id.menu_share) { |
| onShareDocuments(docs); |
| mode.finish(); |
| return true; |
| |
| } else if (id == R.id.menu_delete) { |
| onDeleteDocuments(docs); |
| mode.finish(); |
| return true; |
| |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public void onDestroyActionMode(ActionMode mode) { |
| // ignored |
| } |
| |
| @Override |
| public void onItemCheckedStateChanged( |
| ActionMode mode, int position, long id, boolean checked) { |
| if (checked) { |
| // Directories cannot be checked |
| final Cursor cursor = mAdapter.getItem(position); |
| final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| if (Document.MIME_TYPE_DIR.equals(docMimeType)) { |
| mCurrentView.setItemChecked(position, false); |
| } |
| } |
| |
| mode.setTitle(getResources() |
| .getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount())); |
| } |
| }; |
| |
| private void onShareDocuments(List<DocumentInfo> docs) { |
| Intent intent; |
| if (docs.size() == 1) { |
| final DocumentInfo doc = docs.get(0); |
| |
| intent = new Intent(Intent.ACTION_SEND); |
| intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); |
| intent.addCategory(Intent.CATEGORY_DEFAULT); |
| intent.setType(doc.mimeType); |
| intent.putExtra(Intent.EXTRA_STREAM, doc.uri); |
| |
| } else if (docs.size() > 1) { |
| intent = new Intent(Intent.ACTION_SEND_MULTIPLE); |
| intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); |
| intent.addCategory(Intent.CATEGORY_DEFAULT); |
| |
| final ArrayList<String> mimeTypes = Lists.newArrayList(); |
| final ArrayList<Uri> uris = Lists.newArrayList(); |
| for (DocumentInfo doc : docs) { |
| mimeTypes.add(doc.mimeType); |
| uris.add(doc.uri); |
| } |
| |
| intent.setType(findCommonMimeType(mimeTypes)); |
| intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris); |
| |
| } else { |
| return; |
| } |
| |
| intent = Intent.createChooser(intent, getActivity().getText(R.string.share_via)); |
| startActivity(intent); |
| } |
| |
| private void onDeleteDocuments(List<DocumentInfo> docs) { |
| final Context context = getActivity(); |
| final ContentResolver resolver = context.getContentResolver(); |
| |
| boolean hadTrouble = false; |
| for (DocumentInfo doc : docs) { |
| if (!doc.isDeleteSupported()) { |
| Log.w(TAG, "Skipping " + doc); |
| hadTrouble = true; |
| continue; |
| } |
| |
| if (!DocumentsContract.deleteDocument(resolver, doc.uri)) { |
| Log.w(TAG, "Failed to delete " + doc); |
| hadTrouble = true; |
| } |
| } |
| |
| if (hadTrouble) { |
| Toast.makeText(context, R.string.toast_failed_delete, Toast.LENGTH_SHORT).show(); |
| } |
| } |
| |
| private static State getDisplayState(Fragment fragment) { |
| return ((DocumentsActivity) fragment.getActivity()).getDisplayState(); |
| } |
| |
| private interface Footer { |
| public View getView(View convertView, ViewGroup parent); |
| } |
| |
| private static class LoadingFooter implements Footer { |
| @Override |
| public View getView(View convertView, ViewGroup parent) { |
| final Context context = parent.getContext(); |
| if (convertView == null) { |
| final LayoutInflater inflater = LayoutInflater.from(context); |
| convertView = inflater.inflate(R.layout.item_loading, parent, false); |
| } |
| return convertView; |
| } |
| } |
| |
| private class MessageFooter implements Footer { |
| private final int mIcon; |
| private final String mMessage; |
| |
| public MessageFooter(int icon, String message) { |
| mIcon = icon; |
| mMessage = message; |
| } |
| |
| @Override |
| public View getView(View convertView, ViewGroup parent) { |
| final Context context = parent.getContext(); |
| final State state = getDisplayState(DirectoryFragment.this); |
| |
| if (convertView == null) { |
| final LayoutInflater inflater = LayoutInflater.from(context); |
| if (state.mode == MODE_LIST) { |
| convertView = inflater.inflate(R.layout.item_message_list, parent, false); |
| } else if (state.mode == MODE_GRID) { |
| convertView = inflater.inflate(R.layout.item_message_grid, parent, false); |
| } else { |
| throw new IllegalStateException(); |
| } |
| } |
| |
| final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon); |
| final TextView title = (TextView) convertView.findViewById(android.R.id.title); |
| icon.setImageResource(mIcon); |
| title.setText(mMessage); |
| return convertView; |
| } |
| } |
| |
| private class DocumentsAdapter extends BaseAdapter { |
| private Cursor mCursor; |
| private int mCursorCount; |
| |
| private List<Footer> mFooters = Lists.newArrayList(); |
| |
| public void swapCursor(Cursor cursor) { |
| mCursor = cursor; |
| mCursorCount = cursor != null ? cursor.getCount() : 0; |
| |
| mFooters.clear(); |
| |
| final Bundle extras = cursor != null ? cursor.getExtras() : null; |
| if (extras != null) { |
| final String info = extras.getString(DocumentsContract.EXTRA_INFO); |
| if (info != null) { |
| mFooters.add(new MessageFooter( |
| com.android.internal.R.drawable.ic_menu_info_details, info)); |
| } |
| final String error = extras.getString(DocumentsContract.EXTRA_ERROR); |
| if (error != null) { |
| mFooters.add(new MessageFooter( |
| com.android.internal.R.drawable.ic_dialog_alert, error)); |
| } |
| if (extras.getBoolean(DocumentsContract.EXTRA_LOADING, false)) { |
| mFooters.add(new LoadingFooter()); |
| } |
| } |
| |
| if (isEmpty()) { |
| mEmptyView.setVisibility(View.VISIBLE); |
| } else { |
| mEmptyView.setVisibility(View.GONE); |
| } |
| |
| notifyDataSetChanged(); |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| if (position < mCursorCount) { |
| return getDocumentView(position, convertView, parent); |
| } else { |
| position -= mCursorCount; |
| return mFooters.get(position).getView(convertView, parent); |
| } |
| } |
| |
| private View getDocumentView(int position, View convertView, ViewGroup parent) { |
| final Context context = parent.getContext(); |
| final State state = getDisplayState(DirectoryFragment.this); |
| |
| final RootsCache roots = DocumentsApplication.getRootsCache(context); |
| final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( |
| context, mThumbSize); |
| |
| if (convertView == null) { |
| final LayoutInflater inflater = LayoutInflater.from(context); |
| if (state.mode == MODE_LIST) { |
| convertView = inflater.inflate(R.layout.item_doc_list, parent, false); |
| } else if (state.mode == MODE_GRID) { |
| convertView = inflater.inflate(R.layout.item_doc_grid, parent, false); |
| } else { |
| throw new IllegalStateException(); |
| } |
| } |
| |
| final Cursor cursor = getItem(position); |
| |
| final String docAuthority = getCursorString(cursor, RootCursorWrapper.COLUMN_AUTHORITY); |
| final String docRootId = getCursorString(cursor, RootCursorWrapper.COLUMN_ROOT_ID); |
| final String docId = getCursorString(cursor, Document.COLUMN_DOCUMENT_ID); |
| final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); |
| final String docDisplayName = getCursorString(cursor, Document.COLUMN_DISPLAY_NAME); |
| final long docLastModified = getCursorLong(cursor, Document.COLUMN_LAST_MODIFIED); |
| final int docIcon = getCursorInt(cursor, Document.COLUMN_ICON); |
| final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); |
| final String docSummary = getCursorString(cursor, Document.COLUMN_SUMMARY); |
| final long docSize = getCursorLong(cursor, Document.COLUMN_SIZE); |
| |
| final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon); |
| final TextView title = (TextView) convertView.findViewById(android.R.id.title); |
| final View summaryGrid = convertView.findViewById(R.id.summary_grid); |
| final ImageView icon1 = (ImageView) convertView.findViewById(android.R.id.icon1); |
| final TextView summary = (TextView) convertView.findViewById(android.R.id.summary); |
| final TextView date = (TextView) convertView.findViewById(R.id.date); |
| final TextView size = (TextView) convertView.findViewById(R.id.size); |
| |
| final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) icon.getTag(); |
| if (oldTask != null) { |
| oldTask.cancel(false); |
| } |
| |
| if ((docFlags & Document.FLAG_SUPPORTS_THUMBNAIL) != 0) { |
| final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId); |
| final Bitmap cachedResult = thumbs.get(uri); |
| if (cachedResult != null) { |
| icon.setImageBitmap(cachedResult); |
| } else { |
| final ThumbnailAsyncTask task = new ThumbnailAsyncTask(icon, mThumbSize); |
| icon.setImageBitmap(null); |
| icon.setTag(task); |
| task.execute(uri); |
| } |
| } else if (docIcon != 0) { |
| icon.setImageDrawable(DocumentInfo.loadIcon(context, docAuthority, docIcon)); |
| } else { |
| icon.setImageDrawable(RootsCache.resolveDocumentIcon(context, docMimeType)); |
| } |
| |
| title.setText(docDisplayName); |
| |
| if (mType == TYPE_RECENT_OPEN) { |
| final RootInfo root = roots.getRoot(docAuthority, docRootId); |
| icon1.setVisibility(View.VISIBLE); |
| icon1.setImageDrawable(root.loadIcon(context)); |
| summary.setText(root.getDirectoryString()); |
| summary.setVisibility(View.VISIBLE); |
| } else { |
| icon1.setVisibility(View.GONE); |
| if (docSummary != null) { |
| summary.setText(docSummary); |
| summary.setVisibility(View.VISIBLE); |
| } else { |
| summary.setVisibility(View.INVISIBLE); |
| } |
| } |
| |
| if (summaryGrid != null) { |
| summaryGrid.setVisibility( |
| (summary.getVisibility() == View.VISIBLE) ? View.VISIBLE : View.GONE); |
| } |
| |
| if (docLastModified == -1) { |
| date.setText(null); |
| } else { |
| date.setText(formatTime(context, docLastModified)); |
| } |
| |
| if (state.showSize) { |
| size.setVisibility(View.VISIBLE); |
| if (Document.MIME_TYPE_DIR.equals(docMimeType) || docSize == -1) { |
| size.setText(null); |
| } else { |
| size.setText(Formatter.formatFileSize(context, docSize)); |
| } |
| } else { |
| size.setVisibility(View.GONE); |
| } |
| |
| return convertView; |
| } |
| |
| @Override |
| public int getCount() { |
| return mCursorCount + mFooters.size(); |
| } |
| |
| @Override |
| public Cursor getItem(int position) { |
| if (position < mCursorCount) { |
| mCursor.moveToPosition(position); |
| return mCursor; |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| @Override |
| public int getItemViewType(int position) { |
| if (position < mCursorCount) { |
| return 0; |
| } else { |
| return IGNORE_ITEM_VIEW_TYPE; |
| } |
| } |
| |
| @Override |
| public boolean areAllItemsEnabled() { |
| return false; |
| } |
| |
| @Override |
| public boolean isEnabled(int position) { |
| return position < mCursorCount; |
| } |
| } |
| |
| private static class ThumbnailAsyncTask extends AsyncTask<Uri, Void, Bitmap> { |
| private final ImageView mTarget; |
| private final Point mThumbSize; |
| |
| public ThumbnailAsyncTask(ImageView target, Point thumbSize) { |
| mTarget = target; |
| mThumbSize = thumbSize; |
| } |
| |
| @Override |
| protected void onPreExecute() { |
| mTarget.setTag(this); |
| } |
| |
| @Override |
| protected Bitmap doInBackground(Uri... params) { |
| final Context context = mTarget.getContext(); |
| final Uri uri = params[0]; |
| |
| Bitmap result = null; |
| try { |
| result = DocumentsContract.getDocumentThumbnail( |
| context.getContentResolver(), uri, mThumbSize, null); |
| if (result != null) { |
| final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( |
| context, mThumbSize); |
| thumbs.put(uri, result); |
| } |
| } catch (Exception e) { |
| Log.w(TAG, "Failed to load thumbnail: " + e); |
| } |
| return result; |
| } |
| |
| @Override |
| protected void onPostExecute(Bitmap result) { |
| if (mTarget.getTag() == this) { |
| mTarget.setImageBitmap(result); |
| mTarget.setTag(null); |
| } |
| } |
| } |
| |
| private static String formatTime(Context context, long when) { |
| // TODO: DateUtils should make this easier |
| Time then = new Time(); |
| then.set(when); |
| Time now = new Time(); |
| now.setToNow(); |
| |
| int flags = DateUtils.FORMAT_NO_NOON | DateUtils.FORMAT_NO_MIDNIGHT |
| | DateUtils.FORMAT_ABBREV_ALL; |
| |
| if (then.year != now.year) { |
| flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE; |
| } else if (then.yearDay != now.yearDay) { |
| flags |= DateUtils.FORMAT_SHOW_DATE; |
| } else { |
| flags |= DateUtils.FORMAT_SHOW_TIME; |
| } |
| |
| return DateUtils.formatDateTime(context, when, flags); |
| } |
| |
| private String findCommonMimeType(List<String> mimeTypes) { |
| String[] commonType = mimeTypes.get(0).split("/"); |
| if (commonType.length != 2) { |
| return "*/*"; |
| } |
| |
| for (int i = 1; i < mimeTypes.size(); i++) { |
| String[] type = mimeTypes.get(i).split("/"); |
| if (type.length != 2) continue; |
| |
| if (!commonType[1].equals(type[1])) { |
| commonType[1] = "*"; |
| } |
| |
| if (!commonType[0].equals(type[0])) { |
| commonType[0] = "*"; |
| commonType[1] = "*"; |
| break; |
| } |
| } |
| |
| return commonType[0] + "/" + commonType[1]; |
| } |
| } |
