Develop Reference

Can I send files created from bitmaps rather then files from assets folder through Content Provider?

I have assets folder with images in my project structure and I send them to other app through content provider. My task is to create files in runtime from imageviews (so and I cant put them to assets folder in runtime) and send them with content provider.
Content provider code:
...
#Nullable
#Override
public AssetFileDescriptor openAssetFile(#NonNull Uri uri, #NonNull String mode) {
final int matchCode = MATCHER.match(uri);
if (matchCode == STICKERS_ASSET_CODE || matchCode == STICKER_PACK_TRAY_ICON_CODE) {
return getImageAsset(uri);
}
return null;
}
private AssetFileDescriptor getImageAsset(Uri uri) throws IllegalArgumentException {
AssetManager am = Objects.requireNonNull(getContext()).getAssets();
final List<String> pathSegments = uri.getPathSegments();
if (pathSegments.size() != 3) {
throw new IllegalArgumentException("path segments should be 3, uri is: " + uri);
}
String fileName = pathSegments.get(pathSegments.size() - 1);
final String identifier = pathSegments.get(pathSegments.size() - 2);
if (TextUtils.isEmpty(identifier)) {
throw new IllegalArgumentException("identifier is empty, uri: " + uri);
}
if (TextUtils.isEmpty(fileName)) {
throw new IllegalArgumentException("file name is empty, uri: " + uri);
}
//making sure the file that is trying to be fetched is in the list of stickers.
for (StickerPack stickerPack : getStickerPackList()) {
if (identifier.equals(stickerPack.identifier)) {
if (fileName.equals(stickerPack.trayImageFile)) {
return fetchFile(uri, am, fileName, identifier);
} else {
for (Sticker sticker : stickerPack.getStickers()) {
if (fileName.equals(sticker.imageFileName)) {
return fetchFile(uri, am, fileName, identifier);
}
}
}
}
}
return null;
}
private AssetFileDescriptor fetchFile(#NonNull Uri uri, #NonNull AssetManager am, #NonNull String fileName, #NonNull String identifier) {
try {
return am.openFd(identifier + "/" + fileName);
} catch (IOException e) {
Log.e(Objects.requireNonNull(getContext()).getPackageName(), "IOException when getting asset file, uri:" + uri, e);
return null;
}
}
...

How to Fetch a file name from a folder with current Date and Time using Java Code

Am new to java automation and i have a scenario where i need to navigate to a particular folder, the folder has a list of files i need to filter by date and fetch a filename that got generated recently i.e. if the current time is 5:30pm i need to find the file name that got created between 5:28pm to current time (5:30pm)
This has to be achieved using Java code, File names in the folder
DOF_US_DELL_1.0_20160930_0516.CSV
DOF_US_DELL_1.0_20160930_0756.CSV
DOF_US_DELL_1.0_20161003_0346.CSV
DOF_US_DELL_1.0_20161003_0536.CSV
DOF_US_DELL_1.0_20161004_0747.CSV
DOF_US_DELL_1.0_20161005_0527.CSV
Here is a piece of code that helps me to fetch the list of files in a directory
File dir = new File("C:\\FolderName");
FilenameFilter filter = new FilenameFilter() {
public boolean accept
(File dir, String name) {
return name.startsWith("DOF");
}
};
String[] children = dir.list(filter);
if (children == null) {
System.out.println("Either dir does not exist or is not a directory");
}
else
{
System.out.println("# of the files in the folder is: "+children.length);
if(children.length>0)
{
for (int i=0; i<children.length; i++)
{
String filename = children[i];
System.out.println(filename);
}
}
else
{
System.err.println("# of the files in the folder is: "+children.length);
fail("# of the files in the folder is: "+children.length);
}
}
Thanks in Advance.

Try this. Here I am sorting files on the basis of their last updated time.
FilenameFilter filter = new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.startsWith("cred");
}
};
List<FileOrder> list = new ArrayList<FileOrder>();
File dir = new File("/tmp/");
for (File file : dir.listFiles(filter)) {
list.add(new FileOrder(file.getName(), file.lastModified()));
}
Collections.sort(list);
System.out.println(list);
System.out.println("Last updated file : " + (list != null ? list.get(0) : null));
Above code is part of main function.
Below code is separate class.
public class FileOrder implements Comparable<FileOrder> {
private String fileName;
private Long updationTIme = 0l;
#Override
public String toString() {
return "FileOrder [fileName=" + fileName + ", updationTIme=" + updationTIme + "]";
}
public FileOrder(String fileName, Long updationDate) {
super();
this.fileName = fileName;
this.updationTIme = updationDate;
}
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public Long getUpdationDate() {
return updationTIme;
}
public void setUpdationDate(Long updationDate) {
this.updationTIme = updationDate;
}
#Override
public int compareTo(FileOrder o) {
return o.getUpdationDate().compareTo(this.getUpdationDate());
}
}

How to get paths of folders that has image or video

I want to create an android gallery app .
How to scan and get paths of folders that includes photos or videos .
I used this code and worked . but when i compare it with Quickpic Gallery in play store , i see the count of folders in my app is less than Quickpic folders
Do you see any problem in this code ?
Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
Cursor cursor = ba.context.getContentResolver().query(uri, null, null,
null, MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME);
if (cursor != null) {
cursor.moveToFirst();
int data = cursor
.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
int displayName = cursor
.getColumnIndex(MediaStore.Images.ImageColumns.DISPLAY_NAME);
imageFolders = new HashMap<>();
do {
String imageAddress = cursor.getString(data);
String imageName = cursor.getString(displayName);
String folderAddress = imageAddress.substring(0,
imageAddress.lastIndexOf(imageName) - 1);
if (!imageFolders.containsKey(folderAddress)) {
imageFolders.put(folderAddress, imageAddress);
}
} while (cursor.moveToNext());
for (String str : imageFolders.keySet()) {
ba.raiseEventFromDifferentThread(
null,
null,
0,
"result",
true,
new Object[] { String.format("%s", str),
String.format("%s", imageFolders.get(str)) });
}
}

this way you can find all video and image parents.
ArrayList<String> allFolder;
HashMap<String, ArrayList<String>> listImageByFolder;
ArrayList<String> allVideoFolder;
HashMap<String, ArrayList<String>> listVideoByFolder;
find all images folder path
private void getImageFolderList() {
String[] projection = new String[] { MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
MediaStore.Images.Media.DATE_TAKEN };
Uri images = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
Cursor cur = getContentResolver().query(images, projection, // Which
// columns
// to return
null, // Which rows to return (all rows)
null, // Selection arguments (none)
orderBy + " DESC" // Ordering
);
ArrayList<String> imagePath;
if (cur.moveToFirst()) {
String bucket, date;
int bucketColumn = cur.getColumnIndex(MediaStore.Images.Media.BUCKET_DISPLAY_NAME);
int dateColumn = cur.getColumnIndex(MediaStore.Images.Media.DATE_TAKEN);
do {
bucket = cur.getString(bucketColumn);
date = cur.getString(dateColumn);
if (!allFolder.contains(bucket)) {
allFolder.add(bucket);
}
imagePath = listImageByFolder.get(bucket);
if (imagePath == null) {
imagePath = new ArrayList<String>();
}
imagePath.add(cur.getString(cur
.getColumnIndex(MediaStore.Images.Media.DATA)));
listImageByFolder.put(bucket, imagePath);
} while (cur.moveToNext());
}
}
find all videos folder path
private void getVideoFolderList() {
String[] projection = new String[] { MediaStore.Video.Media.DATA,
MediaStore.Video.Media._ID,
MediaStore.Video.Media.BUCKET_DISPLAY_NAME,
MediaStore.Video.Media.DATE_TAKEN };
Uri images = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
final String orderBy = MediaStore.Video.Media.DATE_TAKEN;
Cursor cur = getContentResolver().query(images, projection, // Which
// columns
// to return
null, // Which rows to return (all rows)
null, // Selection arguments (none)
orderBy + " DESC" // Ordering
);
ArrayList<String> imagePath;
if (cur.moveToFirst()) {
String bucket, date;
int bucketColumn = cur.getColumnIndex(MediaStore.Video.Media.BUCKET_DISPLAY_NAME);
int dateColumn = cur.getColumnIndex(MediaStore.Video.Media.DATE_TAKEN);
do {
bucket = cur.getString(bucketColumn);
date = cur.getString(dateColumn);
if (!allVideoFolder.contains(bucket)) {
allVideoFolder.add(bucket);
}
imagePath = listVideoByFolder.get(bucket);
if (imagePath == null) {
imagePath = new ArrayList<String>();
}
imagePath.add(cur.getString(cur
.getColumnIndex(MediaStore.Images.Media.DATA)));
listVideoByFolder.put(bucket, imagePath);
} while (cur.moveToNext());
}
}

i can see you are trying to get the folder names of all folders containing video files the answer given by #prakash ubhadiya is good an works but for the problem that if the are many of such folders with same name the function will keep only one and ignore the rest, below i have modified his fuction to return not only the folder names but also the folder absolute path in case you will want to use this to get all the video files in that specific folder, i have created a class called floderFacer the holds the folder name and the folder adsolute path, done this way no folders with same names will be ignored below is the class
public class folderFacer {
private String path;
private String folderName;
public folderFacer(){
}
public folderFacer(String path, String folderName) {
this.path = path;
this.folderName = folderName;
}
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
public String getFolderName() {
return folderName;
}
public void setFolderName(String folderName) {
this.folderName = folderName;
}
}
now below is the modified fuction that will return the folder names and paths in a folderFacer object all in an ArrayList<folderFacer>
private ArrayList<folderFacer> getVideoPaths(){
ArrayList<folderFacer> videoFolders = new ArrayList<>();
ArrayList<String> videoPaths = new ArrayList<>();
Uri allVideosuri = android.provider.MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
String[] projection = { MediaStore.Video.VideoColumns.DATA ,MediaStore.Video.Media.DISPLAY_NAME,
MediaStore.Video.Media.BUCKET_DISPLAY_NAME,MediaStore.Video.Media.BUCKET_ID};
Cursor cursor = getContentResolver().query(allVideosuri, projection, null, null, null);
try {
cursor.moveToFirst();
do{
folderFacer folds = new folderFacer();
String name = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME));
String folder = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.BUCKET_DISPLAY_NAME));
String datapath = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA));
String folderpaths = datapath.replace(name,"");
if (!videoPaths.contains(folderpaths)) {
videoPaths.add(folderpaths);
folds.setPath(folderpaths);
folds.setFolderName(folder);
videoFolders.add(folds);
}
}while(cursor.moveToNext());
cursor.close();
} catch (Exception e) {
e.printStackTrace();
}
for(int i = 0;i < videoFolders.size();i++){
Log.d("video folders",videoFolders.get(i).getFolderName()+" and path = "+videoFolders.get(i).getPath());
}
return videoFolders;
}
hope this helps

how to separate [String] by "-" and make multiple column on android?

I'm working on a Searchable dictionary. Its Raw database is separated by "-" like
ColumnA(Key_Word) ColumnB(Key_defination)
Apple - One kind of Fruit
Mango - One fruit also
But I want to make it 3 column, (Column C will be Key_details)
ColumnA ColumnB ColumnC (Key_details)
Apple - One kind of Fruit - Round shape
Mango - One fruit also - Found in Bangladesh
When people search A, application will show Column B and C. The reason why i splited string is I want to show Coumn B and C on different window. How to do that? Here is my source-
/**
* Contains logic to return specific words from the dictionary, and
* load the dictionary table when it needs to be created.
*/
public class DictionaryDatabase {
private static final String TAG = "DictionaryDatabase";
//The columns we'll include in the dictionary table
public static final String KEY_WORD = SearchManager.SUGGEST_COLUMN_TEXT_1;
public static final String KEY_DEFINITION = SearchManager.SUGGEST_COLUMN_TEXT_2;
private static final String DATABASE_NAME = "dictionary";
private static final String FTS_VIRTUAL_TABLE = "FTSdictionary";
private static final int DATABASE_VERSION = 2;
private final DictionaryOpenHelper mDatabaseOpenHelper;
private static final HashMap<String,String> mColumnMap = buildColumnMap();
public DictionaryDatabase(Context context) {
mDatabaseOpenHelper = new DictionaryOpenHelper(context);
}
private static HashMap<String,String> buildColumnMap() {
HashMap<String,String> map = new HashMap<String,String>();
map.put(KEY_WORD, KEY_WORD);
map.put(KEY_DEFINITION, KEY_DEFINITION);
map.put(BaseColumns._ID, "rowid AS " +
BaseColumns._ID);
map.put(SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID, "rowid AS " +
SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID);
map.put(SearchManager.SUGGEST_COLUMN_SHORTCUT_ID, "rowid AS " +
SearchManager.SUGGEST_COLUMN_SHORTCUT_ID);
return map;
}
public Cursor getWord(String rowId, String[] columns) {
String selection = "rowid = ?";
String[] selectionArgs = new String[] {rowId};
return query(selection, selectionArgs, columns);
}
public Cursor getWordMatches(String query, String[] columns) {
String selection = KEY_WORD + " MATCH ?";
String[] selectionArgs = new String[] {query+"*"};
return query(selection, selectionArgs, columns);
}
private Cursor query(String selection, String[] selectionArgs, String[] columns) {
SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
builder.setTables(FTS_VIRTUAL_TABLE);
builder.setProjectionMap(mColumnMap);
Cursor cursor = builder.query(mDatabaseOpenHelper.getReadableDatabase(),
columns, selection, selectionArgs, null, null, null);
if (cursor == null) {
return null;
} else if (!cursor.moveToFirst()) {
cursor.close();
return null;
}
return cursor;
}
private static class DictionaryOpenHelper extends SQLiteOpenHelper {
private final Context mHelperContext;
private SQLiteDatabase mDatabase;
private static final String FTS_TABLE_CREATE =
"CREATE VIRTUAL TABLE " + FTS_VIRTUAL_TABLE +
" USING fts3 (" +
KEY_WORD + ", " +
KEY_DEFINITION + ");";
DictionaryOpenHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
mHelperContext = context;
}
#Override
public void onCreate(SQLiteDatabase db) {
mDatabase = db;
mDatabase.execSQL(FTS_TABLE_CREATE);
loadDictionary();
}
private void loadDictionary() {
new Thread(new Runnable() {
public void run() {
try {
loadWords();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}).start();
}
private void loadWords() throws IOException {
Log.d(TAG, "Loading words...");
final Resources resources = mHelperContext.getResources();
InputStream inputStream = resources.openRawResource(R.raw.definitions);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
try {
String line;
while ((line = reader.readLine()) != null) {
String[] strings = TextUtils.split(line, "-");
if (strings.length < 2) continue;
long id = addWord(strings[0].trim(), strings[1].trim());
if (id < 0) {
Log.e(TAG, "unable to add word: " + strings[0].trim());
}
}
} finally {
reader.close();
}
Log.d(TAG, "DONE loading words.");
}
public long addWord(String word, String definition) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_WORD, word);
initialValues.put(KEY_DEFINITION, definition);
return mDatabase.insert(FTS_VIRTUAL_TABLE, null, initialValues);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS " + FTS_VIRTUAL_TABLE);
onCreate(db);
}
}
}

String[] arr = string.split("-");
String#split(String regex)
Returns the array of strings computed by splitting this string around
matches of the given regular expression.
EDIT:
long id = addWord(strings[0].trim(), strings[1].trim());
Above line should be:
long id = addWord(strings[0].trim(), strings[1].trim(),strings[2].trim());
And change your addWord function as I mentioned below.
public long addWord(String word, String definition,String details) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_WORD, word);
initialValues.put(KEY_DEFINITION, definition);
initialValues.put(KEY_DETAILS, details);
return mDatabase.insert(FTS_VIRTUAL_TABLE, null, initialValues);
}

A better way to handle the tokenization is by using StringTokenizer
StringTokenizer token = new StringTokenizer(str,"-");
To access the tokens,
while(token.hasNext())
{
String tmp = token.nextToken();
...
}

List all music in MediaStore with the PATHs

Ok so I've been working on this project for a few days now and most of my time has been working out how to list all the music on a device in a LIST VIEW or something else, I have searched for a few days now and this is killing me. I did get so close at one point with all the music in one folder showing, though since most people will have sub folders for things like artiest and albums I need a way to search sub folders for MP3s or music files.
Here is what I have so far for Music collection:
package com.androidhive.musicplayer;
import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;
import java.util.HashMap;
import android.provider.MediaStore;
public class SongsManager {
// SDCard Path
final String MEDIA_PATH = new String(MediaStore.Audio.Media.getContentUri("external").toString());
private ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
// Constructor
public SongsManager(){
}
/**
* Function to read all mp3 files from sdcard
* and store the details in ArrayList
* */
public ArrayList<HashMap<String, String>> getPlayList(){
File home = new File(MEDIA_PATH);
if (home.listFiles(new FileExtensionFilter()).length > 0) {
for (File file : home.listFiles(new FileExtensionFilter())) {
HashMap<String, String> song = new HashMap<String, String>();
song.put("songTitle", file.getName().substring(0, (file.getName().length() - 4)));
song.put("songPath", file.getPath());
// Adding each song to SongList
songsList.add(song);
}
}
// return songs list array
return songsList;
}
/**
* Class to filter files which are having .mp3 extension
* */
class FileExtensionFilter implements FilenameFilter {
public boolean accept(File dir, String name) {
return (name.endsWith(".mp3") || name.endsWith(".MP3"));
}
}
}
Thanks to anyone who can help. :)

Although, the post is old, for other people like me to get the idea of creating a list of music with their file path, I added the solution here. MediaStore.Audio.Media.DATA column actually contains media file path. You can get necessary information by using the following snippet:
ContentResolver cr = getActivity().getContentResolver();
Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
String selection = MediaStore.Audio.Media.IS_MUSIC + "!= 0";
String sortOrder = MediaStore.Audio.Media.TITLE + " ASC";
Cursor cur = cr.query(uri, null, selection, null, sortOrder);
int count = 0;
if(cur != null)
{
count = cur.getCount();
if(count > 0)
{
while(cur.moveToNext())
{
String data = cur.getString(cur.getColumnIndex(MediaStore.Audio.Media.DATA));
// Add code to get more column here
// Save to your list here
}
}
cur.close();
}

You can list all the music files using this code
//Some audio may be explicitly marked as not being music
String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0";
String[] projection = {
MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.ARTIST,
MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Audio.Media.DURATION
};
cursor = this.managedQuery(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
projection,
selection,
null,
null);
private List<String> songs = new ArrayList<String>();
while(cursor.moveToNext()) {
songs.add(cursor.getString(0) + "||"
+ cursor.getString(1) + "||"
+ cursor.getString(2) + "||"
+ cursor.getString(3) + "||"
+ cursor.getString(4) + "||"
+ cursor.getString(5));
}
I have not tried this code, but it seems correct. You'll be on the right track with that.

I'm working on same project right now and already solved the problem.
You will need a custom class to store your songs data:
package YOUR_PACKAGE;
public class Songs
{
private long mSongID;
private String mSongTitle;
public Songs(long id, String title){
mSongID = id;
mSongTitle = title;
}
public long getSongID(){
return mSongID;
}
public String getSongTitle(){
return mSongTitle;
}
}
Then you have to define ArrayList in activity with List View which you will populate with data:
private ArrayList<Songs> arrayList;
and in onCreate:
arrayList = new ArrayList<Songs>();
Then you have to retrieve data from your device:
public void YOUR_METHOD_NAME(){
ContentResolver contentResolver = getContentResolver();
Uri songUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor songCursor = contentResolver.query(songUri, null, null, null, null);
if(songCursor != null && songCursor.moveToFirst())
{
int songId = songCursor.getColumnIndex(MediaStore.Audio.Media._ID);
int songTitle = songCursor.getColumnIndex(MediaStore.Audio.Media.TITLE);
do {
long currentId = songCursor.getLong(songId);
String currentTitle = songCursor.getString(songTitle);
arrayList.add(new Songs(currentId, currentTitle, currentArtist));
} while(songCursor.moveToNext());
}
}
Then call this method from onCreate:
YOUR_METHOD_NAME();
And finally you have to create custom adapter class, define this adapter in onCreate (in activity with ListView) and set this adapter on your ListView object.
I see that it was asked 3 years ago and the problem I think already solved, but maybe it will be usefull for someone. Thanks.

Here is a simple function who gives you all audio files in File Object.
public static List<File> getAllAudios(Context c) {
List<File> files = new ArrayList<>();
String[] projection = { MediaStore.Audio.AudioColumns.DATA ,MediaStore.Audio.Media.DISPLAY_NAME};
Cursor cursor = c.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, projection, null, null, null);
try {
cursor.moveToFirst();
do{
files.add((new File(cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA)))));
}while(cursor.moveToNext());
cursor.close();
} catch (Exception e) {
e.printStackTrace();
}
return files;
}