Develop Reference

How query images/videos in custom folders using ContentResolver in Android?

I have a custom folder in the Pictures directory, like thisPictures/MyFolder. It has images in MyFolder. Here is how to query the images using ContentResolver on MyFolder folder only.
I tried this
Cursor mediaCursor = context.getContentResolver().query(
MediaStore.Files.getContentUri("external"),
null,
MediaStore.MediaColumns.RELATIVE_PATH + " like ? ",
new String[]{"%MyFolder%"},
null);
But it contains other files also. Or is any alternate to content resolver?

You can use the below function to get the images from the folder.
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());
}
}

How can I get Uri of a private Folder in Android?

I am trying to make an android camera app with image gallery. The images captured are saved to a private directory: Android/data/com.example.newcamera/files/pictures.
Whenever I am using INTERNAL_CONTENT_URI or, EXTERNAL_CONTENT_URI as Uri, The app is bringing all the public pictures of my phone but not the one in the private directory. But I need only those with private directory. How can I get it? Please help me. My code snippet is as follows:
Thanks in advance.
protected String doInBackground(String... args) {
String xml = "";
String path = null;
String album = null;
String timestamp = null;
String countPhoto = null;
Uri uriInternal = MediaStore.Images.Media.INTERNAL_CONTENT_URI;
Uri uriExternal = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
Uri myUri = Uri.fromFile(new File(getApplicationContext().getFilesDir().getAbsolutePath()));
String[] projection = { MediaStore.MediaColumns.DATA,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME, MediaStore.MediaColumns.DATE_MODIFIED };
Cursor cursorExternal = getContentResolver().query(uriExternal, projection, "_data IS NOT NULL) GROUP BY (bucket_display_name",
null, null);
Cursor cursorInternal = getContentResolver().query(uriInternal, projection, "_data IS NOT NULL) GROUP BY (bucket_display_name",
null, null);
Cursor myCursor = getContentResolver().query(myUri, projection, "_data IS NOT NULL) GROUP BY (bucket_display_name",
null, null);
Cursor cursor = new MergeCursor(new Cursor[]{cursorExternal, cursorInternal, myCursor});
while (cursor.moveToNext()) {
path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA));
album = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.BUCKET_DISPLAY_NAME));
timestamp = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATE_MODIFIED));
countPhoto = Function.getCount(getApplicationContext(), album);
albumList.add(Function.mappingInbox(album, path, timestamp, Function.converToTime(timestamp), countPhoto));
}
cursor.close();
Collections.sort(albumList, new MapComparator(Function.KEY_TIMESTAMP, "dsc")); // Arranging photo album by timestamp decending
return xml;
}

You can fetch your files from particular folder by:
File folder = new File(Environment.getExternalStorageDirectory().toString() + "/Folder Name/");
folder.mkdirs();
File[] allFiles = folder.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return (name.endsWith(".jpg") || name.endsWith(".jpeg") || name.endsWith(".png"));
}
});
You can convert file path to Uri by Uri.fromFile(YOUR FILE)

Content provider not working in one plus devices

I have two applications, one contains content provider and other app receives data using content resolver. If i add any data form provider that should be displayed from receiver in second app, this is the expected functionality.But after adding data once I remove first app from stack then second app displays null cursor,If I keep first app in stack, then second app displays correct value .(This issue only comes in one plus devices)
code snippet where cursor value coming null is,
Cursor c = getContentResolver().query(CONTENT_URI, null, null, null,
null);

may be it will help you
private String uriToFilename(Uri uri) {
String path = null;
if (Build.VERSION.SDK_INT < 11) {
path = getRealPathFromURI_BelowAPI11(this, uri);
} else if (Build.VERSION.SDK_INT < 19) {
path = getRealPathFromURI_API11to18(this, uri);
} else {
path = getRealPathFromURI_API19(this, uri);
}
return path;
}
BelowAPI11
public static String getRealPathFromURI_BelowAPI11(Context context, Uri contentUri) {
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index
= cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
API11to18
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
String[] proj = {MediaStore.Images.Media.DATA};
String result = null;
CursorLoader cursorLoader = new CursorLoader(
context,
contentUri, proj, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
if (cursor != null) {
int column_index =
cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
result = cursor.getString(column_index);
}
return result;
}
API19
public static String getRealPathFromURI_API19(Context context, Uri uri) {
Log.e("uri", uri.getPath());
String filePath = "";
if (DocumentsContract.isDocumentUri(context, uri)) {
String wholeID = DocumentsContract.getDocumentId(uri);
Log.e("wholeID", wholeID);
// Split at colon, use second item in the array
String[] splits = wholeID.split(":");
if (splits.length == 2) {
String id = splits[1];
String[] column = {MediaStore.Images.Media.DATA};
// where id is equal to
String sel = MediaStore.Images.Media._ID + "=?";
Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
column, sel, new String[]{id}, null);
int columnIndex = cursor.getColumnIndex(column[0]);
if (cursor.moveToFirst()) {
filePath = cursor.getString(columnIndex);
}
cursor.close();
}
} else {
filePath = uri.getPath();
}
return filePath;
}

Enable Don’t optimize inside Settings to resolve one plus issue.
Settings –> Battery –> Battery Optimization –> Your App –> Don’t optimize
enter image description here

How to get file path from uri?

I am trying to retrieve file path from URI. But my cursor is returning null.
Two problems:
Uri may be audio/ video. So how can I retrieve file path.
Why cursor is returning null?
Here is my code
String[] proj = { MediaStore.Video.Media.DATA };
Cursor cursor = getContentResolver().query(contentUri, proj, null, null, null);
//here cursor is null. So i am getting Null pointer exception
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
Permissions I have used:
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

public void songList(){
ContentResolver contentResolver = getContentResolver();
Uri uri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor cur = contentResolver.query(uri, null, null, null, null);
if(cur.moveToFirst()){
do {
int pathIndex = cur.getColumnIndex(MediaStore.Audio.Media.DATA);
int nameIndex = cur.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME);
String spath = cur.getString(pathIndex);
String name = cur.getString(nameIndex);
paths.add(spath.substring(4));
songs.add(name);
} while (cur.moveToNext());
}

You can use get File path from diffrent SDk versions
Use RealPathUtils for it
public class RealPathUtils {
#SuppressLint("NewApi")
public static String getRealPathFromURI_API19(Context context, Uri uri){
String filePath = "";
String wholeID = DocumentsContract.getDocumentId(uri);
// Split at colon, use second item in the array
String id = wholeID.split(":")[1];
String[] column = { MediaStore.Images.Media.DATA };
// where id is equal to
String sel = MediaStore.Images.Media._ID + "=?";
Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
column, sel, new String[]{ id }, null);
int columnIndex = cursor.getColumnIndex(column[0]);
if (cursor.moveToFirst()) {
filePath = cursor.getString(columnIndex);
}
cursor.close();
return filePath;
}
#SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
String result = null;
CursorLoader cursorLoader = new CursorLoader(
context,
contentUri, proj, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
if(cursor != null){
int column_index =
cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
result = cursor.getString(column_index);
}
return result;
}
public static String getRealPathFromURI_BelowAPI11(Context context, Uri contentUri){
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index
= cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
Now get the file Path from URI
String path = null;
if (Build.VERSION.SDK_INT < 11)
path = RealPathUtils.getRealPathFromURI_BelowAPI11(MainActivity.this, uri);
// SDK >= 11 && SDK < 19
else if (Build.VERSION.SDK_INT < 19)
path = RealPathUtils.getRealPathFromURI_API11to18(MainActivity.this, uri);
// SDK > 19 (Android 4.4)
else
path = RealPathUtils.getRealPathFromURI_API19(MainActivity.this, uri);
Log.d(TAG, "File Path: " + path);
// Get the file instance
File file = new File(path);

Android get images from sdcard

I am using a code which is listing all the images from my device...and I'm trying to figure it out how to get images only from a specific folder, not all the images. Here is the code I'm using :
ArrayList<Bitmap> images = new ArrayList<Bitmap>();
String[] projection = {MediaStore.Images.Thumbnails.DATA};
Uri uri = Uri.parse("content://media/external/images/media");
cursor = managedQuery( uri, projection, null, null, null);
//cursor = managedQuery( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, null);
Log.i("MediaStore.Images.Media.EXTERNAL_CONTENT_URI", "MediaStore.Images.Media.EXTERNAL_CONTENT_URI: " + MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
if(cursor.getCount()==0){
Log.i("No Cards","No Cards");
cursor.close();
} else if(cursor.getCount()>0){
for(cursor.moveToFirst(); cursor.moveToNext(); cursor.isAfterLast()){
int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
String imagePath = cursor.getString(columnIndex);
Log.i("imagePath", "imagePath: " + imagePath);
Bitmap b = BitmapFactory.decodeFile("/Stampii" + imagePath, null);
images.add(b);
}
}
The thing that I want to do is to get images from imagePath: /mnt/sdcard/Stampii/MediaCategory-251.jpg Stampii folder, but I can't understand how to enter the right path to that folder. I've already tried with :
Uri uri = Uri.parse("content://media/external/images/media/mnt/sdcard/Stampii");
Any solutions?

use
File file = new File(Environment.getExternalStoragePath()+"/Stampii/");
file imageList[] = file.listFiles();
for(int i=0;i<imageList.length;i++)
{
Log.e("Image: "+i+": path", imageList[i].getAbsolutePath());
Bitmap b = BitmapFactory.decodeFile(imageList[i].getAbsolutePath());
images.add(b);
}