Develop Reference

MediaStore.Audio and ContentResolver.query not getting music

I have a Music player project in Android Studio, and I need to get all music from the device.
But somehow this.getContentResolver().query(); is not getting any music from my device.
In the logcat there is no log, and if I debug the app before the while loop and after it(because it does not enter in the while loop) it says that the cursor does not have any row(mCount = 0)
Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
ContentResolver resolver = this.getContentResolver();
String[] projection = {
MediaStore.Audio.Media.ALBUM,
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.ARTIST
};
String where = MediaStore.Audio.Media.IS_MUSIC + " != 0";
Cursor c = resolver.query(uri, projection, where, null, null);
if (c != null) {
while (c.moveToNext()) {
String path = c.getString(0);
String name = c.getString(1);
String album = c.getString(2);
String artist = c.getString(3);
Log.e("Name :" + name, " Album :" + album);
Log.e("Path :" + path, " Artist :" + artist);
}
c.close();
}

How to GROUP BY in where clause with ContentProvider?

Helo, I've got this code, which query the instances in calendarcontract:
Uri uri = Uri.parse(CalendarContract.Instances.CONTENT_URI + "/" +
Long.toString(from) + "/" +
Long.toString(to));
String[] mProjection =
{
CalendarContract.Instances._ID,
CalendarContract.Instances.EVENT_ID,
CalendarContract.Instances.CALENDAR_ID,
CalendarContract.Instances.TITLE,
CalendarContract.Instances.EVENT_LOCATION,
CalendarContract.Instances.DESCRIPTION,
CalendarContract.Instances.EVENT_COLOR,
CalendarContract.Instances.DTSTART,
CalendarContract.Instances.DTEND,
CalendarContract.Instances.EVENT_TIMEZONE,
CalendarContract.Instances.EVENT_END_TIMEZONE,
CalendarContract.Instances.DURATION,
CalendarContract.Instances.ALL_DAY,
CalendarContract.Instances.RRULE,
CalendarContract.Instances.RDATE,
CalendarContract.Instances.EXDATE
};
ContentResolver cr2 = this.c.getContentResolver();
String selection2 = "( " + selection_allcalendars + " (" + CalendarContract.Instances.RRULE + " IS NOT NULL) AND (deleted != 1) AND (" + CalendarContract.Instances.ALL_DAY + " = 0))";
Cursor cur2 = cr2.query(uri, mProjection, selection2, null, CalendarContract.Instances.DTSTART + " ASC");
How can I remove double instances from query? I want to use a "GROUP BY" clause, but I don't know how to do that.
Please help me :-)
Thanks!
Edit:
I want to group by EVENT_ID, because I get multiple entries. This ist the whole code I use for recurring events:
ContentResolver cr2 = this.c.getContentResolver();
String selection2 = "( " + selection_allcalendars + " (" + CalendarContract.Instances.RRULE + " IS NOT NULL) AND (deleted != 1) AND (" + CalendarContract.Instances.ALL_DAY + " = 0))";
Cursor cur2 = cr2.query(uri, mProjection, selection2, null, CalendarContract.Instances.DTSTART + " ASC");
ArrayList<String> checkexists = new ArrayList<>();
while (cur2.moveToNext()) {
String eventid = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.EVENT_ID));
if(checkexists.contains(eventid)) {
}
else {
checkexists.add(eventid);
String rrule = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.RRULE));
TimeZone tz = TimeZone.getTimeZone("Europe/Berlin");
Long dtstart;
try {
dtstart = Long.parseLong(cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.DTSTART)));
dtstart = tz.getOffset(dtstart) + dtstart;
} catch (NumberFormatException e) {
dtstart = 0l;
}
Long dtend;
try {
dtend = dtstart + RFC2445ToMilliseconds(cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.DURATION)));
/* dtend = Long.parseLong(cur.getString(cur.getColumnIndex(CalendarContract.Events.DTEND)));
dtend = tz.getOffset(dtend) + dtend; */
} catch (NumberFormatException e) {
dtend = 0l;
}
Calendar cal4 = Calendar.getInstance();
cal4.setTimeInMillis(dtstart);
LocalDate localdate = new LocalDate(cal4.get(Calendar.YEAR), cal4.get(Calendar.MONTH) + 1, cal4.get(Calendar.DAY_OF_MONTH));
long calendar_id = Long.valueOf(cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.CALENDAR_ID)));
String id = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances._ID));
String title = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.TITLE));
String eventlocation = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.EVENT_LOCATION));
String description = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.DESCRIPTION));
String eventcolor = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.EVENT_COLOR));
String eventtimezone = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.EVENT_TIMEZONE));
String eventtimezone_end = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.EVENT_END_TIMEZONE));
String duration = cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.DURATION));
int allday = Integer.valueOf(cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.ALL_DAY)));
rrule = "RRULE:" + rrule;
long lastrecurrencetime;
if(rrule.contains("UNTIL")) {
lastrecurrencetime = RruleHelper.getUntil(rrule).getTimeInMillis();
}
else {
lastrecurrencetime = -1;
}
//System.out.println("EEE: " + title + " " + rrule);
try {
ArrayList<ReadEvent> recurrenceevents = new ArrayList<>();
for (LocalDate date : LocalDateIteratorFactory.createLocalDateIterable(rrule, localdate, true)) {
// System.out.println("GGG:" + title + " " + i);
Calendar newcal_from = Calendar.getInstance();
newcal_from.setTimeInMillis(dtstart);
newcal_from.set(Calendar.DAY_OF_MONTH, date.getDayOfMonth());
newcal_from.set(Calendar.MONTH, date.getMonthOfYear() - 1);
newcal_from.set(Calendar.YEAR, date.getYear());
long dtstart_new = newcal_from.getTimeInMillis();
long dtend_new = dtstart_new + RFC2445ToMilliseconds(cur2.getString(cur2.getColumnIndex(CalendarContract.Instances.DURATION)));
if (dtstart_new >= from && dtstart_new <= to) {
ReadEvent newreadevent = new ReadEvent(calendar_id, id, eventid, title, eventlocation, description, eventcolor, dtstart_new, dtend_new, eventtimezone, eventtimezone_end, duration, allday, rrule);
newreadevent.setFirstReccurenceTime(dtstart);
newreadevent.setLastReccurenceTime(lastrecurrencetime);
if(!checkIfAlreadyExits(readevent, newreadevent)) {
//newreadevent.setReccurenceCount(i);
readevent.add(newreadevent);
}
}
if (dtstart_new > to) {
break;
}
}
} catch (Exception e) {
}
}
}

how to import chrome history into android application in android studio?

i want the code to import chrome history into my application in android studio
and i tried to use this code :
String[] proj = new String[] { Browser.BookmarkColumns.TITLE,
Browser.BookmarkColumns.URL };
String chnHistory = Browser.BookmarkColumns.BOOKMARK + " = 0"; // 0 = history,
Cursor mycur = this.managedQuery(Browser.BOOKMARKS_URI, proj,
chnHistory, null, null);
this.startManagingCursor(mycur);
mycur.moveToFirst();
ArrayList<String> array = new ArrayList<String>();
String title = "";
String url = "";
if (mycur.moveToFirst() && mycur.getCount() > 0) {
while (!mycur.isAfterLast()) {
title = mycur.getString(mycur
.getColumnIndex(Browser.BookmarkColumns.TITLE));
url = mycur.getString(mycur
.getColumnIndex(Browser.BookmarkColumns.URL));
array.add(title + " : " + url);
mycur.moveToNext();
}
}
if (array.size() > 0) {
for (String string : array) {
Log.d("result ", string);
}
}
but the BookmarkColumns not resolved becuase of the targetSdkVersion 23

How get thumbnails from a specific directory with content provider

I have this code that want to extract all thumbnails but the array result is empty and logically list bitmaps too.Where path is "/emulated/storage/legacy", context is the Activity and the query is with condition. Any Idea? Thanks.
public void getThubmnails() {
String[] cols = {
MediaStore.Files.FileColumns._ID,
MediaStore.Files.FileColumns.DATA,
MediaStore.Files.FileColumns.DATE_ADDED,
MediaStore.Files.FileColumns.MEDIA_TYPE,
MediaStore.Files.FileColumns.MIME_TYPE,
MediaStore.Files.FileColumns.DISPLAY_NAME
};
Uri uri = MediaStore.Files.getContentUri("external");
Cursor cursor = this.context.getContentResolver().query(
uri,
cols,
MediaStore.Files.FileColumns.DATA + "=?",
new String[] {
path,
},
null
);
cursor.moveToFirst();
int index = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns._ID);
int name = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DISPLAY_NAME);
int tipo = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.MIME_TYPE);
int path = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DATA);
String[] result = new String[cursor.getCount()];
while(cursor.moveToNext()) {
result[cursor.getPosition()] = "ID: " + String.valueOf(cursor.getLong(index))
+ " " + "NAME: " + cursor.getString(name)
+ " " + "MIME_TYPE: " + cursor.getString(tipo)
+ " " + "DATA: " + cursor.getString(path);
this.bitmap.add(MediaStore.Images.Thumbnails.getThumbnail(
this.context.getContentResolver(),
cursor.getLong(index),
MediaStore.Images.Thumbnails.MICRO_KIND, null));
}
}

How to check if id is exists in Android?

I want to check if id is exists in SQLIte DB then update that id , if id is not present in SQLite then insert that id. How can i do this. Can someone help how to work with.Thanks to Appreciate.
Here is my Activity code
public void saveResult()
{
AnswerOptions = (RadioButton) findViewById(Options_RadioGroup.getCheckedRadioButtonId());
String str_AnswerOptions = AnswerOptions.getText().toString().trim();
System.out.println("rbVal = " + str_AnswerOptions);
if (str_AnswerOptions.equals(((Datastructure) Vectore_mquestionDatabaseStructure .get(StaticClass.QuestionNumber)).Answer))
{
if (!StaticClass.isTest)
{
try
{
DatabaseHelper databaseHelper = new DatabaseHelper(this.getApplicationContext());
sqdb = databaseHelper.getWritableDatabase();
String strCountQuery = "SELECT question_id, question_type , question_no FROM question_answers where question_id = " + convertVector ;
Cursor cur = sqdb.rawQuery(strCountQuery , null);
if (cur.moveToFirst())
{
int iCount = cur.getCount();
System.out.println("iCount = " + iCount);
if(cur.getCount() <= 0 )
{
String strstrqueType = txtViewQuestiontype.getText().toString().trim();
String str_que = txtViewQuestion.getText().toString().trim();
String str_marks = "1";
databaseHelper.insertQueDetails(strQueLimit, strstrqueType, str_que, str_AnswerOptions, str_marks , strOption_Id);
System.out.println("strQueLimit = " + strQueLimit + ", strstrqueType = " + strstrqueType +" , str_que = " + str_que + " , str_AnswerOptions = " + str_AnswerOptions + ", str_marks = " + str_marks + ", strOption_Id = " + strOption_Id);
Toast.makeText(this, " Right Answer ", Toast.LENGTH_LONG).show();
}
else
{
cur.moveToFirst();
qid = cur.getInt(cur.getColumnIndex("question_id"));
String strQue_Type = cur.getString(cur.getColumnIndex("question_type"));
String strQue_Nomber = cur.getString(cur.getColumnIndex("question_no"));
System.out.println("qid in checkUpdateTable() = " + qid);
System.out.println("strQue_Type in checkUpdateTable() = " + strQue_Type);
System.out.println("strQue_Nomber in checkUpdateTable()= " + strQue_Nomber);
QueId = qid;
databaseHelper.updateAnswerRow(qid, str_AnswerOptions);
}
}
}
catch (SQLiteException se )
{
Log.e(getClass().getSimpleName(), "Could not create or Open the database");
}
finally
{ if (sqdb != null) { sqdb.close();} }
}
}
}

You need to set a constraint on the table to trigger a "conflict" which you then resolve by doing a replace:
CREATE TABLE data (id INTEGER PRIMARY KEY, question_id INTEGER, question_type TEXT, question_no TEXT);
CREATE UNIQUE INDEX data_idx ON data(question_id);
Then you can issue:
INSERT OR REPLACE INTO data VALUES (NULL, 1, 2, 3);
INSERT OR REPLACE INTO data VALUES (NULL, 2, 2, 3);
INSERT OR REPLACE INTO data VALUES (NULL, 1, 2, 5);