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Fetching pdf file from MediaStore shows the list of data that doesnt even exist in internal storage and sd card

I want to know how can i use mediastore to check whether the file that i am fetching from my storage is deleted or present in my storage.The problem that i am facing is my pdf app is showing the deleted pdf which were deleted maybe 2-4 months earlier.I am sharing my code please let me know how to solve this issue.
Here is my code:
protected ArrayList<String> getPdfList() {
ArrayList<String> pdfList = new ArrayList<>();
Uri collection;
final String[] projection = new String[]{
MediaStore.Files.FileColumns.DISPLAY_NAME,
MediaStore.Files.FileColumns.DATE_ADDED,
MediaStore.Files.FileColumns.DATA,
MediaStore.Files.FileColumns.MIME_TYPE,
};
final String sortOrder = MediaStore.Files.FileColumns.DATE_ADDED + " DESC";
final String selection = MediaStore.Files.FileColumns.MIME_TYPE + " = ?";
final String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension("pdf");
final String[] selectionArgs = new String[]{mimeType};
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
collection = MediaStore.Files.getContentUri(MediaStore.VOLUME_EXTERNAL);
}else{
collection = MediaStore.Files.getContentUri("external");
}
try (Cursor cursor = getContentResolver().query(collection, projection, selection, selectionArgs, sortOrder)) {
assert cursor != null;
if (cursor.moveToFirst()) {
int columnData = cursor.getColumnIndex(MediaStore.Files.FileColumns.DATA);
int columnName = cursor.getColumnIndex(MediaStore.Files.FileColumns.DISPLAY_NAME);
do {
pdfList.add((cursor.getString(columnData)));
Log.d(TAG, "getPdf: " + cursor.getString(columnData));
//you can get your pdf files
} while (cursor.moveToNext());
}
}
return pdfList;
}

How can I update the phone numbers of contacts in Android Studios

I am new to developing apps with android studio, and I decided to make an app to edit the phone numbers of my phone contacts as my first test app.
I use a class to get information about all the contacts that I have on my cell phone, then I have created a listview where I show the contact's name, ID, avatar and registered phone numbers.
The information has been gotten from the ContactsContract.Contacts table. This all works fine, so far.
But now I have to edit the phone numbers of all the contacts, but I don't know exactly how to do it. I've been going through the Android devs documentation but I can't get anything that can help me. I don't want to use Intent in this case.
I have this kotlin class that I use to get the information of all contacts is this:
#file:Suppress("unused")
package com.example.uimx
import android.Manifest
import android.content.ContentUris
import android.content.Context
import android.net.Uri
import android.provider.ContactsContract
import androidx.annotation.RequiresPermission
#RequiresPermission(Manifest.permission.READ_CONTACTS)
fun Context.isContactExists(
phoneNumber: String
): Boolean {
val lookupUri = Uri.withAppendedPath(
ContactsContract.PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(phoneNumber)
)
val projection = arrayOf(
ContactsContract.PhoneLookup._ID,
ContactsContract.PhoneLookup.NUMBER,
ContactsContract.PhoneLookup.DISPLAY_NAME
)
contentResolver.query(lookupUri, projection, null, null, null).use {
return (it?.moveToFirst() == true)
}
}
#RequiresPermission(Manifest.permission.READ_CONTACTS)
#JvmOverloads
fun Context.retrieveAllContacts(
searchPattern: String = "",
retrieveAvatar: Boolean = true,
limit: Int = -1,
offset: Int = -1
): List<ContactData> {
val result: MutableList<ContactData> = mutableListOf()
contentResolver.query(
ContactsContract.Contacts.CONTENT_URI,
CONTACT_PROJECTION,
if (searchPattern.isNotBlank()) "${ContactsContract.Contacts.DISPLAY_NAME_PRIMARY} LIKE '%?%'" else null,
if (searchPattern.isNotBlank()) arrayOf(searchPattern) else null,
if (limit > 0 && offset > -1) "${ContactsContract.Contacts.DISPLAY_NAME_PRIMARY} ASC LIMIT $limit OFFSET $offset"
else ContactsContract.Contacts.DISPLAY_NAME_PRIMARY + " ASC"
)?.use {
if (it.moveToFirst()) {
do {
val contactId = it.getLong(it.getColumnIndex(CONTACT_PROJECTION[0]))
val name = it.getString(it.getColumnIndex(CONTACT_PROJECTION[2])) ?: ""
val hasPhoneNumber = it.getString(it.getColumnIndex(CONTACT_PROJECTION[3])).toInt()
val phoneNumber: List<String> = if (hasPhoneNumber > 0) {
retrievePhoneNumber(contactId)
} else mutableListOf()
val avatar = if (retrieveAvatar) retrieveAvatar(contactId) else null
result.add(ContactData(contactId, name, phoneNumber, avatar))
} while (it.moveToNext())
}
}
return result
}
private fun Context.retrievePhoneNumber(contactId: Long): List<String> {
val result: MutableList<String> = mutableListOf()
contentResolver.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
"${ContactsContract.CommonDataKinds.Phone.CONTACT_ID} =?",
arrayOf(contactId.toString()),
null
)?.use {
if (it.moveToFirst()) {
do {
result.add(it.getString(it.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)))
} while (it.moveToNext())
}
}
return result
}
private fun Context.retrieveAvatar(contactId: Long): Uri? {
return contentResolver.query(
ContactsContract.Data.CONTENT_URI,
null,
"${ContactsContract.Data.CONTACT_ID} =? AND ${ContactsContract.Data.MIMETYPE} = '${ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE}'",
arrayOf(contactId.toString()),
null
)?.use {
if (it.moveToFirst()) {
val contactUri = ContentUris.withAppendedId(
ContactsContract.Contacts.CONTENT_URI,
contactId
)
Uri.withAppendedPath(
contactUri,
ContactsContract.Contacts.Photo.CONTENT_DIRECTORY
)
} else null
}
}
private val CONTACT_PROJECTION = arrayOf(
ContactsContract.Contacts._ID,
ContactsContract.Contacts.LOOKUP_KEY,
ContactsContract.Contacts.DISPLAY_NAME_PRIMARY,
ContactsContract.Contacts.HAS_PHONE_NUMBER
)
data class ContactData(
val contactId: Long,
val name: String,
val phoneNumber: List<String>,
val avatar: Uri?
)
I have a button prepared that receives the click event and calls a function that would have the script to replace all the phone numbers of all the contacts, for new phone numbers that I will define for each contact.
I have this next code that I got on the internet but I can't get it to work in my app.
private int updateContactPhoneByID(long rawContactId)
{
int ret = 0;
ContentResolver contentResolver = getContentResolver();
// Update data table phone number use contact raw contact id.
if(rawContactId > -1) {
// Update mobile phone number.
updatePhoneNumber(contentResolver, rawContactId, ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE, "66666666666666");
// Update work mobile phone number.
updatePhoneNumber(contentResolver, rawContactId, ContactsContract.CommonDataKinds.Phone.TYPE_WORK_MOBILE, "8888888888888888");
// Update home phone number.
updatePhoneNumber(contentResolver, rawContactId, ContactsContract.CommonDataKinds.Phone.TYPE_HOME, "99999999999999999");
ret = 1;
}else
{
ret = 0;
}
return ret;
}
/* Update phone number with raw contact id and phone type.*/
private void updatePhoneNumber(ContentResolver contentResolver, long rawContactId, int phoneType, String newPhoneNumber)
{
// Create content values object.
ContentValues contentValues = new ContentValues();
// Put new phone number value.
contentValues.put(ContactsContract.CommonDataKinds.Phone.NUMBER, newPhoneNumber);
// Create query condition, query with the raw contact id.
StringBuffer whereClauseBuf = new StringBuffer();
// Specify the update contact id.
whereClauseBuf.append(ContactsContract.Data.RAW_CONTACT_ID);
whereClauseBuf.append("=");
whereClauseBuf.append(rawContactId);
// Specify the row data mimetype to phone mimetype( vnd.android.cursor.item/phone_v2 )
whereClauseBuf.append(" and ");
whereClauseBuf.append(ContactsContract.Data.MIMETYPE);
whereClauseBuf.append(" = '");
String mimetype = ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE;
whereClauseBuf.append(mimetype);
whereClauseBuf.append("'");
// Specify phone type.
whereClauseBuf.append(" and ");
whereClauseBuf.append(ContactsContract.CommonDataKinds.Phone.TYPE);
whereClauseBuf.append(" = ");
whereClauseBuf.append(phoneType);
// Update phone info through Data uri.Otherwise it may throw java.lang.UnsupportedOperationException.
Uri dataUri = ContactsContract.Data.CONTENT_URI;
// Get update data count.
int updateCount = contentResolver.update(dataUri, contentValues, whereClauseBuf.toString(), null);
}
How to make the above script work to update the correct contact table with the information I have.

I think you have a confusion about contactId and rawContactId.
When you read all the contacts from the device, you're getting the contactId of that contact, but the updateContactPhoneByID method you're trying to use is expecting a rawContactId which is different.
In a nutshell, every Contact in the ContactsContract.Contacts table is comprised out of multiple RawContacts each is usually synced by some different app or account (e.g. one RawContact from your personal Google account, another RawContact from your work Google account, another one from Whatsapp, and one from Yahoo), the details from ALL these RawContacts are join to make up a single contact profile.
I'm not sure how you want the edit to work, if a contact has multiple phone numbers, do you want to replace ALL those phones with a single new phone number, or do you allow the user to type multiple phones in your edit screen?
Anyway, here's a small kotlin function that takes a contactId and an existing phone number X and replaces that single number with a new one.
I hope you can adapt it to your needs.
private fun updatePhone(contactId:Long, existingNumber:String, newNumber:String) {
val contentValues = ContentValues()
contentValues.put(Phone.NUMBER, newNumber)
val where = Data.CONTACT_ID + "=?" + " AND " + Data.MIMETYPE + "=?" + " AND " + Phone.NUMBER + "=?"
val whereArgs = arrayOf<String>((contactId).toString(), Phone.CONTENT_ITEM_TYPE, existingNumber)
contentResolver.update(Data.CONTENT_URI, contentValues, where, whereArgs)
}
Note that the existingNumber param must match the string in the ContactsContract DB exactly.

phone number from device returns 0 [duplicate]

I want to custom search in contacts in android.
For example, i want contacts that each contact number end with 555 so how can i do that?

Get all contacts and search manually using code.
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
String phone = null;
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur .getColumnIndex(ContactsContract.Contacts._ID));
if (Integer .parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
{
Cursor pCur = cr.query( ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { id }, null);
while (pCur.moveToNext()) {
phone = pCur .getString(pCur .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
if(phone.endsWith( "555")
// store the number and id of the contact
}
pCur.close();
}
/*** Store id and phone in another variable(eg ArrayList,etc) so that it does not get lost in another iteration of while loop***/
}
}
Also Android contacts are formatted with spaces,- and (). it may be better to remove them before checking. Using
phone.replace("-", "").replace("(", "").replace(")", "").replace(".", "").replace(" ", "");
Also see here.

Retrieving a phone number with ContactsContract in Android - function doesn't work

I wrote the following function in order to retrieve one single phone number that belongs to the contact with id "contactID".
The function which is to retrieve the phone number:
private String getContactPhone(String contactID) {
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = null;
String where = ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?";
String[] selectionArgs = new String[] { contactID };
String sortOrder = null;
Cursor result = managedQuery(uri, projection, where, selectionArgs, sortOrder);
if (result.moveToFirst()) {
String phone = result.getString(result.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
if (phone == null) {
result.close();
return null;
}
result.close();
return phone;
}
result.close();
return null;
}
How this function is called:
ArrayList<Contact> resultContacts = new ArrayList<Contact>();
Cursor result = null;
Uri uri = ContactsContract.Data.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Event.CONTACT_ID,
ContactsContract.CommonDataKinds.Event.START_DATE,
};
String where = ContactsContract.Data.MIMETYPE+" = ? AND "+ContactsContract.CommonDataKinds.Event.TYPE+" = "+ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY;
String[] selectionArgs = new String[] {ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE};
String sortOrder = null;
result = managedQuery(uri, projection, where, selectionArgs, sortOrder);
while (result.moveToNext()) {
Long id = result.getLong(result.getColumnIndex(ContactsContract.Contacts._ID));
String phone = getContactPhone(String.valueOf(id));
...
}
...
Unfortunately, it doesn't work. I get null if I call this function with the value that I got from "ContactsContract.Contacts._ID". Why is this so? What is wrong?
Edit: I used to map Contacts._ID to CommonDataKinds.Phone.CONTACT_ID - which didn't work. But now I map Contacts.DISPLAY_NAME to CommonDataKinds.Phone.DISPLAY_NAME and it works suddenly - strange, isn't it? But I would rather like to map the IDs instead of the display names. So the question is still topical. Could this be due to different IDs in those tables? Isn't this why there are lookup IDs?

To get the contact id in the first part, you should use:
ContactsContract.Data.CONTACT_ID
instead of:
ContactsContract.Contacts._ID
So the projection should be:
String[] projection = new String[] {
ContactsContract.Data.CONTACT_ID,
ContactsContract.CommonDataKinds.Event.CONTACT_ID,
ContactsContract.CommonDataKinds.Event.START_DATE,
};
And then of course get the correct row:
Long id = result.getLong(result.getColumnIndex(ContactsContract.Data.CONTACT_ID));

You are getting null because you have set your projection to null. The projection is basically the list of columns that you want returned e.g.
String[] projection = {ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME, ContactsContract.Contacts.HAS_PHONE_NUMBER};
Usually, when you find the contact, they may have a list of phone numbers, so you have to use another cursor to iterate through the phone numbers, e.g.
Cursor phones = mContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId, null, null);
while (phones.moveToNext())
{
phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
}
Hope this helps.

Your code for getContactPhone() works fine on my end. I tested by launching a contact picker, selecting a contact, then using the ID that was returned and passed that into your method.
So I suspect you are indeed passing in an invalid ID. Can you post the full stack trace for the null pointer exception?
Yes, lookup keys are available because _IDs are not guaranteed to stay the same since syncs and contact aggregation changes them.

Android - Get Nickname and Type of Nickname

I've been trying to get the nickname of a contact for a few hours now, and still cant get them to work, I've been told that they are in a differnt table to the phone numbers etc.. But i dont know how to access them.
The closest I've got is this..
Cursor cursor = context.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, ContactsContract.Contacts._ID +" = ?", new String[]{String.valueOf(recordId)}, null);
while (cursor.moveToNext()) {
Cursor nickname = context.getContentResolver().query( ContactsContract.Data.CONTENT_URI, null, ContactsContract.CommonDataKinds.Nickname.CONTACT_ID +" = "+ recordId, null, null);
while (nickname.moveToNext()) {
try {
String nicknameName = nickname.getString(nickname.getColumnIndex(ContactsContract.CommonDataKinds.Nickname.NAME));
String nicknameType = nickname.getString(nickname.getColumnIndex(ContactsContract.CommonDataKinds.Nickname.TYPE));
switch (Integer.valueOf(nicknameType)) {
case 1: nicknameType = "TYPE_HOME"; break;
}
list.add(new KeyValue("Nickname:" + nicknameType, nicknameName));
} catch (Exception e) { continue; }
}
nickname.close();
}
This gets all the data of the contact along with the type eg: Thomas Owers 1 this is all good but it doesn't give me what the data is, so it gives the email, phone, names, nickname but i cant distinguish between them.
Any help would be much apreciated, Thank you! :)

I was able to get the nickname after several hours of searching the internet...
ArrayList<KeyValue> list = new ArrayList<KeyValue>();
Cursor cursor = context.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, ContactsContract.Contacts._ID +" = ?", new String[]{String.valueOf(recordId)}, null);
while (cursor.moveToNext()) {
String where = ContactsContract.Data.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?";
String[] params = new String[] {String.valueOf(recordId), ContactsContract.CommonDataKinds.Nickname.CONTENT_ITEM_TYPE};
Cursor nickname = context.getContentResolver().query(ContactsContract.Data.CONTENT_URI, null, where, params, null);
while (nickname.moveToNext()) {
String nicknameName = nickname.getString(nickname.getColumnIndex(ContactsContract.CommonDataKinds.Nickname.NAME));
String nicknameType = nickname.getString(nickname.getColumnIndex(ContactsContract.CommonDataKinds.Nickname.TYPE));
switch (Integer.valueOf(nicknameType)) {
case 1: nicknameType = "Default"; break;
case 2: nicknameType = "OtherName"; break;
case 3: nicknameType = "MaidenName"; break;
case 4: nicknameType = "ShortName"; break;
case 5: nicknameType = "Initials"; break;
}
list.add(new KeyValue("Nickname:" + nicknameType, nicknameName));
}
nickname.close();
}
return list;
This code gets the nickname! :)

Donot get all data. only get the required data using projection
String[] proj ={ContactsContract.CommonDataKinds.Nickname.NAME, ContactsContract.CommonDataKinds.Nickname.TYPE};
Cursor nickname = getContentResolver().query( ContactsContract.Data.CONTENT_URI, proj,ContactsContract.CommonDataKinds.Nickname.CONTACT_ID +" = "+ recordId, null, null);