Develop Reference

How to get phone number for each SMS on the device?

I'm getting all phone's SMS with this URI - Telephony.Sms.Inbox.CONTENT_URI
TextBasedSmsColumns contains all columns for a projection.
Cursor is built like this:
cursor = getContentResolver().query(Telephony.Sms.Inbox.CONTENT_URI,
new String[] { BaseColumns._ID, TextBasedSmsColumns.ADDRESS },
null, null, null);
There is a TextBasedSmsColumns.ADDRESS column that contains a phone number OR a contact name. So how can I always get the phone number for the SMS? Should I use another approach to get all SMS?

This is how I got.
Uri uriSMSURI = Uri.parse("content://sms/inbox");
Cursor cur = getContentResolver().query(uriSMSURI, null, null, null, null);
if (cur != null) {
while (cur.moveToNext()) {
String body = cur.getString(cur.getColumnIndexOrThrow("body"));
//Here you will get all PhoneNumbers
String phoneNumber = cur.getString(cur.getColumnIndexOrThrow("address"));
}
cur.close();
}

Why my cursor is always null?

Following code I use to get images from gallery
final Uri sourceUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
CursorLoader cursorLoader = new CursorLoader( this,sourceUri,null,null,null,MediaStore.Audio.Media.TITLE );
Cursor cursor = cursorLoader.loadInBackground();
here cursor fetches all the images but when I give a specific path as uri like below
String dirUri = "/storage/emulated/myimages";
Cursor cursor = getContentResolver().query( Uri.parse(dirUri), null, null, null, null );
then cursor always gets null value.
How to resolve this ?

Try out as below to get the image from particular folder.
String dirUri =Environment.getExternalStorageDirectory()+ "/myimages";
Cursor cursor = getContentResolver().query(Uri.parse(new File(dirUri).toString()), null, null, null, null );

Use this code instead of your code:
File images = new File(Environment.getExternalStorageDirectory()
+ "/myimages");
Cursor cursor = getContentResolver().query( Uri.parse(images.toString()), null, null, null, null );

I want to get a cursor to one file only. But how?

I am new to android. I want get cursor to one file only. But how? I tried this but doesn't work and gives error.
private void getallaudioFromMySpecialFolder() {
String[] star = { "*" };
String Dir_recordedAudios= Environment.getExternalStorageDirectory()+File.separator+"My Audios"+File.separator;
File Directory=new File(Dir_recordedAudios);
Uri u=Uri.fromFile(Directory);
Uri uri = Uri.parse(u.toString());
Cursor musiccursor = managedQuery(uri, star,null, null, null);
if (musiccursor!= null) {
if (musiccursor.moveToFirst()) {
do {
String duration = musiccursor.getString(musiccursor.getColumnIndex(MediaStore.Audio.Media.DURATION));
String str_duration=CalTotalTime(Integer.valueOf(duration));
String path= musiccursor.getString(musiccursor.getColumnIndex(MediaStore.Audio.Media.DATA));
Log.d("************", "**************");
Log.d("path",path);
Log.d("totalTime", str_duration);
} while (musiccursor.moveToNext());
}
musiccursor.close();
}
}

I finally Find my question solving . If we want cursor to a special file,first in Projection array determine aour fileds for projection. And we must define aur file which want fetching its info.
We use of a statement with "LIKE" word for selection. Code is here. Too,I learned that using from CursorLoader is better.because managedQuery method is deprecated.
Code is here:
String name="";
String duration="";
String path="";
Log.d("Loading file: " + filepath,"");
// This returns us content://media/external/videos/media (or something like that)
// I pass in "external" because that's the MediaStore's name for the external
// storage on my device (the other possibility is "internal")
Uri audiosUri = MediaStore.Audio.Media.getContentUri("external");
Log.d("audiosUri = " + audiosUri.toString(),"");
String[] projection = {MediaStore.Audio.Media.DATA,MediaStore.Audio.Media.DISPLAY_NAME,MediaStore.Audio.Media.DURATION};
// TODO This will break if we have no matching item in the MediaStore.
Cursor cursor = managedQuery(audiosUri, projection, MediaStore.Audio.Media.DATA + " LIKE ?", new String[] { filepath }, null);
cursor.moveToFirst();
path =cursor.getString( cursor.getColumnIndex(projection[0]));
name=cursor.getString( cursor.getColumnIndex(projection[1]));
int iduration = cursor.getColumnIndex(projection[2]);
duration=CalTotalTime(Integer.valueOf(iduration));
Log.d("pathhhhhhhhhhhhhhhhhh", path);
Log.d("nameeeeeeeeeeeeeeeeeeeeeee", name);
Log.d("duration", duration);
cursor.close();
And this is a formal of CursorLoader .May be helps you.
private String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Audio.Media.DATA };
CursorLoader loader = new CursorLoader(mContext, contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(proj[0]);
cursor.moveToFirst();
return cursor.getString(column_index);
}

Android - MediaStore.Video.query() is returning null

I'm trying to retrieve the metadata from a video file (title, language, artist) using the method MediaStore.Video.query(). However, the method is always returning null. The code is bellow:
String[] columns = {
MediaStore.Video.VideoColumns._ID,
MediaStore.Video.VideoColumns.TITLE,
MediaStore.Video.VideoColumns.ARTIST
};
Cursor cursor = MediaStore.Video.query(getApplicationContext().getContentResolver(), videoUri,columns);
if (cursor != null) {
cursor.moveToNext();
}
String title = cursor.getString(cursor.getColumnIndex(MediaStore.Video.VideoColumns.TITLE));
Any suggestion about how to return video metadata using android?
==Update
As I searched in many places, I tried one solution using CursorLoader. However, the method loadInBackground() from CursorLoader is also returning null. The code is showed bellow:
String[] columns = {
MediaStore.Video.VideoColumns.TITLE
};
Uri videoUri = Uri.parse("content://mnt/sdcard/Movies/landscapes.mp4");
CursorLoader loader = new CursorLoader(getBaseContext(), videoUri, columns, null, null, null);
Cursor cursor = loader.loadInBackground();
cursor.moveToFirst();
String title = cursor.getString(cursor.getColumnIndex(MediaStore.Video.VideoColumns.TITLE));

Uri.parse("content://mnt/sdcard/Movies/landscapes.mp4") is not an Uri for MediaStore. It would try to find a ContentProvider for authority mnt which does not exist.
MediaStore can handle only content://media/... Uris which you should get exclusively via MediaStore, not by using Uri.parse().
In your case use the following for example
Uri uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
String[] columns = {
MediaStore.Video.VideoColumns._ID,
MediaStore.Video.VideoColumns.TITLE,
MediaStore.Video.VideoColumns.ARTIST
};
String selection = MediaStore.Video.VideoColumns.DATA + "=?";
String selectionArgs[] = { "/mnt/sdcard/Movies/landscapes.mp4" };
Cursor cursor = context.getContentResolver().query(uri, columns, selection, selectionArgs, null);
The MediaStore.Video.VideoColumns.DATA field holds the path to the videos and you search for a certain video this way. At least for now, future versions of Android may change that.
Your second example is using CursorLoader the wrong way. If you call loader.loadInBackground() yourself, you load the data in foreground. See e.g. http://mobile.tutsplus.com/tutorials/android/android-sdk_loading-data_cursorloader/
The next thing you do is
Cursor cursor = getCursor();
cursor.moveToFirst();
String title = cursor.getString(/* some index */);
This will lead to a CursorIndexOutOfBoundsException if your cursor has 0 rows and cursor.moveToFirst() failed because there is no first row. The cursor stays before the first row (at -1) and that index does not exist. That would mean in your case that the file was not found in the database.
To prevent that use the return value of moveToFirst - it will only be true if there is a first row.
Cursor cursor = getCursor(); // from somewhere
if (cursor.moveToFirst()) {
String title = cursor.getString(/* some index */);
}
A more complete example including checks for null and closing the cursor in all cases
Cursor cursor = getCursor(); // from somewhere
String title = "not found";
if (cursor != null) {
if (cursor.moveToFirst()) {
title = cursor.getString(/* some index */);
}
cursor.close();
}
I guess the file you try to find is either not indexed in the database (rebooting forces the indexer to run again) or the path is wrong.
Or the path you use is actually a symlink in which case MediaStore might use a different path.
Use this to get rid of symlinks
String path = "/mnt/sdcard/Movies/landscapes.mp4";
try {
path = new File(path).getCanonicalPath();
} catch (IOException e) {
e.printStackTrace();
}
Yes, I tested now and it is throwing IndexOutOfBoundsException. When I'm using cursor.getColumnCount() it returns 1
cursor.getColumnCount() is the column count, not the row count. It should always be the same as the number of columns you requested in columns. You need to check cursor.getCount() if you want to check the row count.
Try dumping all the videos known to MediaStore into logcat in case it does not show as expected.
public static void dumpVideos(Context context) {
Uri uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
String[] projection = { MediaStore.Video.VideoColumns.DATA };
Cursor c = context.getContentResolver().query(uri, projection, null, null, null);
int vidsCount = 0;
if (c != null) {
vidsCount = c.getCount();
while (c.moveToNext()) {
Log.d("VIDEO", c.getString(0));
}
c.close();
}
Log.d("VIDEO", "Total count of videos: " + vidsCount);
}

I updated your code, it works, just check it
public static void dumpVideos(Context context) {
Uri uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
String[] projection = { MediaStore.Video.VideoColumns.DATA };
Cursor c = context.getContentResolver().query(uri, projection, null, null, null);
int vidsCount = 0;
if (c != null) {
c.moveToFirst();
vidsCount = c.getCount();
do {
Log.d("VIDEO", c.getString(0));
}while (c.moveToNext());
c.close();
}
Log.d("VIDEO", "Total count of videos: " + vidsCount);
}

Android - Find a contact by display name

I'm trying to find a contact by display name. The goal is to open this contact and add more data to it (specifically more phone numbers), but I'm struggling to even find the contact I want to update.
This is the code I'm using:
public static String findContact(Context context) {
ContentResolver contentResolver = context.getContentResolver();
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_FILTER_URI;
String[] projection = new String[] { PhoneLookup._ID };
String selection = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " = ?";
String[] selectionArguments = { "John Johnson" };
Cursor cursor = contentResolver.query(uri, projection, selection, selectionArguments, null);
if (cursor != null) {
while (cursor.moveToNext()) {
return cursor.getString(0);
}
}
return "John Johnson not found";
}
I do have a contact called "John Johnson", but the method always returns "not found". I also tried searching for a contact with just one name, so that makes no difference.
I suspect that it's something wrong with the uri, selection or selection arguments, because I couldn't find any example online of searching for contacts with a given display name, and it seems display name is a special kind of information, different from for example a phone number.
Any ideas how I can achieve to find John Johnson?
UPDATE: I found out how to find a contact by display name:
ContentResolver contentResolver = context.getContentResolver();
Uri uri = Data.CONTENT_URI;
String[] projection = new String[] { PhoneLookup._ID };
String selection = StructuredName.DISPLAY_NAME + " = ?";
String[] selectionArguments = { "John Johnson" };
Cursor cursor = contentResolver.query(uri, projection, selection, selectionArguments, null);
if (cursor != null) {
while (cursor.moveToNext()) {
return cursor.getString(0);
}
}
return "John Johnson not found";
This code returns the contact id of the first contact with display name "John Johnson". In my original code I had the wrong uri and the wrong selection in my query.

I thinks the issue may caused by the projection you set. Projection is used to tell android which column of data you want to query then you only give the id column so the display name won't return. Try to remove the projection to see whether it works.
-- Cursor cursor = contentResolver.query(uri, projection, selection, selectionArguments, null);
++ Cursor cursor = contentResolver.query(uri, null, selection, selectionArguments, null);

Change Your Query URI.
You are using a URI that is meant to filter only phones numbers:
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_FILTER_URI;
You need to use a URI that has access to the display_name column, like this:
Uri uri = ContactsContract.Data.CONTENT_URI;
There's a decent breakdown of what URIs to use and when to use them on the Android SDK Documentation:
If you need to read an individual contact, consider using CONTENT_LOOKUP_URI instead of CONTENT_URI.
If you need to look up a contact by the phone number, use PhoneLookup.CONTENT_FILTER_URI, which is optimized for this purpose.
If you need to look up a contact by partial name, e.g. to produce filter-as-you-type suggestions, use the CONTENT_FILTER_URI URI.
If you need to look up a contact by some data element like email address, nickname, etc, use a query against the ContactsContract.Data table. The result will contain contact ID, name etc.

//method for gaining id
//this method get a name and make fetch it's id and then send the id to other method //named "showinformation" and that method print information of that contact
public void id_return(String name) {
String id_name=null;
Uri resultUri = ContactsContract.Contacts.CONTENT_URI;
Cursor cont = getContentResolver().query(resultUri, null, null, null, null);
String whereName = ContactsContract.Data.MIMETYPE + " = ? AND " + ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME + " = ?" ;
String[] whereNameParams = new String[] { ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE,name};
Cursor nameCur = getContentResolver().query(ContactsContract.Data.CONTENT_URI, null, whereName, whereNameParams, ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME);
while (nameCur.moveToNext()) {
id_name = nameCur.getString(nameCur.getColumnIndex(ContactsContract.CommonDataKinds.StructuredName.CONTACT_ID));}
nameCur.close();
cont.close();
nameCur.close();
//for calling of following method
showinformation(id_name);
}
//method for showing information like name ,phone, email and other thing you want
public void showinformation(String id) {
String name=null;
String phone=null;
String email=null;
Uri resultUri = ContactsContract.Contacts.CONTENT_URI;
Cursor cont = getContentResolver().query(resultUri, null, null, null, null);
String whereName = ContactsContract.Data.MIMETYPE + " = ? AND " + ContactsContract.CommonDataKinds.StructuredName.CONTACT_ID+ " = ?" ;
String[] whereNameParams1 = new String[] { ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE,id};
Cursor nameCur1 = getContentResolver().query(ContactsContract.Data.CONTENT_URI, null, whereName, whereNameParams1, ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME);
while (nameCur1.moveToNext()) {
name = nameCur1.getString(nameCur1.getColumnIndex(ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME));}
nameCur1.close();
cont.close();
nameCur1.close();
String[] whereNameParams2 = new String[] { ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE,id};
Cursor nameCur2 = getContentResolver().query(ContactsContract.Data.CONTENT_URI, null, whereName, whereNameParams2, ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME);
while (nameCur2.moveToNext()) {
phone = nameCur2.getString(nameCur2.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));}
nameCur2.close();
cont.close();
nameCur2.close();
String[] whereNameParams3 = new String[] { ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE,id};
Cursor nameCur3 = getContentResolver().query(ContactsContract.Data.CONTENT_URI, null, whereName, whereNameParams3, ContactsContract.CommonDataKinds.StructuredName.GIVEN_NAME);
while (nameCur3.moveToNext()) {
email = nameCur3.getString(nameCur3.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));}
nameCur3.close();
cont.close();
nameCur3.close();
String[] whereNameParams4 = new String[] { ContactsContract.CommonDataKinds.StructuredPostal.CONTENT_ITEM_TYPE,id};
Cursor nameCur4 = getContentResolver().query(ContactsContract.Data.CONTENT_URI, null, whereName, whereNameParams4, ContactsContract.CommonDataKinds.StructuredPostal.DATA);
while (nameCur4.moveToNext()) {
phone = nameCur4.getString(nameCur4.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.DATA));}
nameCur4.close();
cont.close();
nameCur4.close();
//showing result
txadd.setText("Name= "+ name+"\nPhone= "+phone+"\nEmail= "+email);
}
//thank all persons in this site because of many help of me to learn and correction my warn and errors this is only a gift for all of you and ...

The below code should do the trick
if (displayName != null) {
Uri lookupUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_FILTER_URI, Uri.encode(displayName));
String[] displayNameProjection = { ContactsContract.Contacts._ID, ContactsContract.Contacts.LOOKUP_KEY, Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ? ContactsContract.Contacts.DISPLAY_NAME_PRIMARY : ContactsContract.Contacts.DISPLAY_NAME };
Cursor cur = context.getContentResolver().query(lookupUri, displayNameProjection, null, null, null);
try {
if (cur.moveToFirst()) {
return true;
}
} finally {
if (cur != null)
cur.close();
}
return false;
} else {
return false;
}
Reference: Retrieving a List of Contacts Article