thakersamveg608
commented
4 years ago Once you have the URI, you can easily get it by using following 2 classes :
`import android.content.ContentResolver; import android.content.ContentUris; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.database.DatabaseUtils; import android.graphics.Bitmap; import android.net.Uri; import android.os.Build; import android.os.Environment; import android.provider.DocumentsContract; import android.provider.MediaStore; import android.util.Log; import android.webkit.MimeTypeMap;
import java.io.File; import java.io.FileFilter; import java.text.DecimalFormat; import java.util.Comparator;
public class FileUtils { private FileUtils() {} //private constructor to enforce Singleton pattern
/** TAG for log messages. */
static final String TAG = "FileUtils";
private static final boolean DEBUG = false; // Set to true to enable logging
public static final String MIME_TYPE_AUDIO = "audio/*";
public static final String MIME_TYPE_TEXT = "text/*";
public static final String MIME_TYPE_IMAGE = "image/*";
public static final String MIME_TYPE_VIDEO = "video/*";
public static final String MIME_TYPE_APP = "application/*";
public static final String HIDDEN_PREFIX = ".";
/**
* Gets the extension of a file name, like ".png" or ".jpg".
*
* @param uri
* @return Extension including the dot("."); "" if there is no extension;
* null if uri was null.
*/
public static String getExtension(String uri) {
if (uri == null) {
return null;
}
int dot = uri.lastIndexOf(".");
if (dot >= 0) {
return uri.substring(dot);
} else {
// No extension.
return "";
}
}
/**
* @return Whether the URI is a local one.
*/
public static boolean isLocal(String url) {
if (url != null && !url.startsWith("http://") && !url.startsWith("https://")) {
return true;
}
return false;
}
/**
* @return True if Uri is a MediaStore Uri.
* @author paulburke
*/
public static boolean isMediaUri(Uri uri) {
return "media".equalsIgnoreCase(uri.getAuthority());
}
/**
* Convert File into Uri.
*
* @param file
* @return uri
*/
public static Uri getUri(File file) {
if (file != null) {
return Uri.fromFile(file);
}
return null;
}
/**
* Returns the path only (without file name).
*
* @param file
* @return
*/
public static File getPathWithoutFilename(File file) {
if (file != null) {
if (file.isDirectory()) {
// no file to be split off. Return everything
return file;
} else {
String filename = file.getName();
String filepath = file.getAbsolutePath();
// Construct path without file name.
String pathwithoutname = filepath.substring(0,
filepath.length() - filename.length());
if (pathwithoutname.endsWith("/")) {
pathwithoutname = pathwithoutname.substring(0, pathwithoutname.length() - 1);
}
return new File(pathwithoutname);
}
}
return null;
}
/**
* @return The MIME type for the given file.
*/
public static String getMimeType(File file) {
String extension = getExtension(file.getName());
if (extension.length() > 0)
return MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension.substring(1));
return "application/octet-stream";
}
/**
* @return The MIME type for the give Uri.
*/
public static String getMimeType(Context context, Uri uri) {
File file = new File(getPath(context, uri));
return getMimeType(file);
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is {@link LocalStorageProvider}.
* @author paulburke
*/
public static boolean isLocalStorageDocument(Uri uri) {
return LocalStorageProvider.AUTHORITY.equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
* @author paulburke
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
* @author paulburke
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
* @author paulburke
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
* @author paulburke
*/
public static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
if (DEBUG)
DatabaseUtils.dumpCursor(cursor);
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* Get a file path from a Uri. This will get the the path for Storage Access
* Framework Documents, as well as the _data field for the MediaStore and
* other file-based ContentProviders.<br>
* <br>
* Callers should check whether the path is local before assuming it
* represents a local file.
*
* @param context The context.
* @param uri The Uri to query.
* @see #isLocal(String)
* @see #getFile(Context, Uri)
* @author paulburke
*/
public static String getPath(final Context context, final Uri uri) {
if (DEBUG)
Log.d(TAG + " File -",
"Authority: " + uri.getAuthority() +
", Fragment: " + uri.getFragment() +
", Port: " + uri.getPort() +
", Query: " + uri.getQuery() +
", Scheme: " + uri.getScheme() +
", Host: " + uri.getHost() +
", Segments: " + uri.getPathSegments().toString()
);
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// LocalStorageProvider
if (isLocalStorageDocument(uri)) {
// The path is the id
return DocumentsContract.getDocumentId(uri);
}
// ExternalStorageProvider
else if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Convert Uri into File, if possible.
*
* @return file A local file that the Uri was pointing to, or null if the
* Uri is unsupported or pointed to a remote resource.
* @see #getPath(Context, Uri)
* @author paulburke
*/
public static File getFile(Context context, Uri uri) {
if (uri != null) {
String path = getPath(context, uri);
if (path != null && isLocal(path)) {
return new File(path);
}
}
return null;
}
/**
* Get the file size in a human-readable string.
*
* @param size
* @return
* @author paulburke
*/
public static String getReadableFileSize(int size) {
final int BYTES_IN_KILOBYTES = 1024;
final DecimalFormat dec = new DecimalFormat("###.#");
final String KILOBYTES = " KB";
final String MEGABYTES = " MB";
final String GIGABYTES = " GB";
float fileSize = 0;
String suffix = KILOBYTES;
if (size > BYTES_IN_KILOBYTES) {
fileSize = size / BYTES_IN_KILOBYTES;
if (fileSize > BYTES_IN_KILOBYTES) {
fileSize = fileSize / BYTES_IN_KILOBYTES;
if (fileSize > BYTES_IN_KILOBYTES) {
fileSize = fileSize / BYTES_IN_KILOBYTES;
suffix = GIGABYTES;
} else {
suffix = MEGABYTES;
}
}
}
return String.valueOf(dec.format(fileSize) + suffix);
}
/**
* Attempt to retrieve the thumbnail of given File from the MediaStore. This
* should not be called on the UI thread.
*
* @param context
* @param file
* @return
* @author paulburke
*/
public static Bitmap getThumbnail(Context context, File file) {
return getThumbnail(context, getUri(file), getMimeType(file));
}
/**
* Attempt to retrieve the thumbnail of given Uri from the MediaStore. This
* should not be called on the UI thread.
*
* @param context
* @param uri
* @return
* @author paulburke
*/
public static Bitmap getThumbnail(Context context, Uri uri) {
return getThumbnail(context, uri, getMimeType(context, uri));
}
/**
* Attempt to retrieve the thumbnail of given Uri from the MediaStore. This
* should not be called on the UI thread.
*
* @param context
* @param uri
* @param mimeType
* @return
* @author paulburke
*/
public static Bitmap getThumbnail(Context context, Uri uri, String mimeType) {
if (DEBUG)
Log.d(TAG, "Attempting to get thumbnail");
if (!isMediaUri(uri)) {
Log.e(TAG, "You can only retrieve thumbnails for images and videos.");
return null;
}
Bitmap bm = null;
if (uri != null) {
final ContentResolver resolver = context.getContentResolver();
Cursor cursor = null;
try {
cursor = resolver.query(uri, null, null, null, null);
if (cursor.moveToFirst()) {
final int id = cursor.getInt(0);
if (DEBUG)
Log.d(TAG, "Got thumb ID: " + id);
if (mimeType.contains("video")) {
bm = MediaStore.Video.Thumbnails.getThumbnail(
resolver,
id,
MediaStore.Video.Thumbnails.MINI_KIND,
null);
}
else if (mimeType.contains(FileUtils.MIME_TYPE_IMAGE)) {
bm = MediaStore.Images.Thumbnails.getThumbnail(
resolver,
id,
MediaStore.Images.Thumbnails.MINI_KIND,
null);
}
}
} catch (Exception e) {
if (DEBUG)
Log.e(TAG, "getThumbnail", e);
} finally {
if (cursor != null)
cursor.close();
}
}
return bm;
}
/**
* File and folder comparator. TODO Expose sorting option method
*
* @author paulburke
*/
public static Comparator<File> sComparator = new Comparator<File>() {
@Override
public int compare(File f1, File f2) {
// Sort alphabetically by lower case, which is much cleaner
return f1.getName().toLowerCase().compareTo(
f2.getName().toLowerCase());
}
};
/**
* File (not directories) filter.
*
* @author paulburke
*/
public static FileFilter sFileFilter = new FileFilter() {
@Override
public boolean accept(File file) {
final String fileName = file.getName();
// Return files only (not directories) and skip hidden files
return file.isFile() && !fileName.startsWith(HIDDEN_PREFIX);
}
};
/**
* Folder (directories) filter.
*
* @author paulburke
*/
public static FileFilter sDirFilter = new FileFilter() {
@Override
public boolean accept(File file) {
final String fileName = file.getName();
// Return directories only and skip hidden directories
return file.isDirectory() && !fileName.startsWith(HIDDEN_PREFIX);
}
};
/**
* Get the Intent for selecting content to be used in an Intent Chooser.
*
* @return The intent for opening a file with Intent.createChooser()
* @author paulburke
*/
public static Intent createGetContentIntent() {
// Implicitly allow the user to select a particular kind of data
final Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
// The MIME data type filter
intent.setType("*/*");
// Only return URIs that can be opened with ContentResolver
intent.addCategory(Intent.CATEGORY_OPENABLE);
return intent;
}}`
`import android.content.res.AssetFileDescriptor; import android.database.Cursor; import android.database.MatrixCursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Point; import android.os.CancellationSignal; import android.os.Environment; import android.os.ParcelFileDescriptor; import android.provider.DocumentsContract.Document; import android.provider.DocumentsContract.Root; import android.provider.DocumentsProvider; import android.util.Log; import android.webkit.MimeTypeMap;
import com.android.pet.book.petbook.androidcustomerapplication.R;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;public class LocalStorageProvider extends DocumentsProvider {
public static final String AUTHORITY = "com.ianhanniballake.localstorage.documents";
/**
* Default root projection: everything but Root.COLUMN_MIME_TYPES
*/
private final static String[] DEFAULT_ROOT_PROJECTION = new String[] {
Root.COLUMN_ROOT_ID,
Root.COLUMN_FLAGS, Root.COLUMN_TITLE, Root.COLUMN_DOCUMENT_ID, Root.COLUMN_ICON,
Root.COLUMN_AVAILABLE_BYTES
};
/**
* Default document projection: everything but Document.COLUMN_ICON and
* Document.COLUMN_SUMMARY
*/
private final static String[] DEFAULT_DOCUMENT_PROJECTION = new String[] {
Document.COLUMN_DOCUMENT_ID,
Document.COLUMN_DISPLAY_NAME, Document.COLUMN_FLAGS, Document.COLUMN_MIME_TYPE,
Document.COLUMN_SIZE,
Document.COLUMN_LAST_MODIFIED
};
@Override
public Cursor queryRoots(final String[] projection) throws FileNotFoundException {
// Create a cursor with either the requested fields, or the default
// projection if "projection" is null.
final MatrixCursor result = new MatrixCursor(projection != null ? projection
: DEFAULT_ROOT_PROJECTION);
// Add Home directory
File homeDir = Environment.getExternalStorageDirectory();
final MatrixCursor.RowBuilder row = result.newRow();
// These columns are required
row.add(Root.COLUMN_ROOT_ID, homeDir.getAbsolutePath());
row.add(Root.COLUMN_DOCUMENT_ID, homeDir.getAbsolutePath());
row.add(Root.COLUMN_TITLE, getContext().getString(R.string.internal_storage));
row.add(Root.COLUMN_FLAGS, Root.FLAG_LOCAL_ONLY | Root.FLAG_SUPPORTS_CREATE);
row.add(Root.COLUMN_ICON, R.drawable.ic_provider);
// These columns are optional
row.add(Root.COLUMN_AVAILABLE_BYTES, homeDir.getFreeSpace());
// Root.COLUMN_MIME_TYPE is another optional column and useful if you
// have multiple roots with different
// types of mime types (roots that don't match the requested mime type
// are automatically hidden)
return result;
}
@Override
public String createDocument(final String parentDocumentId, final String mimeType,
final String displayName) throws FileNotFoundException {
File newFile = new File(parentDocumentId, displayName);
try {
newFile.createNewFile();
return newFile.getAbsolutePath();
} catch (IOException e) {
Log.e(LocalStorageProvider.class.getSimpleName(), "Error creating new file " + newFile);
}
return null;
}
@Override
public AssetFileDescriptor openDocumentThumbnail(final String documentId, final Point sizeHint,
final CancellationSignal signal) throws FileNotFoundException {
// Assume documentId points to an image file. Build a thumbnail no
// larger than twice the sizeHint
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(documentId, options);
final int targetHeight = 2 * sizeHint.y;
final int targetWidth = 2 * sizeHint.x;
final int height = options.outHeight;
final int width = options.outWidth;
options.inSampleSize = 1;
if (height > targetHeight || width > targetWidth) {
final int halfHeight = height / 2;
final int halfWidth = width / 2;
// Calculate the largest inSampleSize value that is a power of 2 and
// keeps both
// height and width larger than the requested height and width.
while ((halfHeight / options.inSampleSize) > targetHeight
|| (halfWidth / options.inSampleSize) > targetWidth) {
options.inSampleSize *= 2;
}
}
options.inJustDecodeBounds = false;
Bitmap bitmap = BitmapFactory.decodeFile(documentId, options);
// Write out the thumbnail to a temporary file
File tempFile = null;
FileOutputStream out = null;
try {
tempFile = File.createTempFile("thumbnail", null, getContext().getCacheDir());
out = new FileOutputStream(tempFile);
bitmap.compress(Bitmap.CompressFormat.PNG, 90, out);
} catch (IOException e) {
Log.e(LocalStorageProvider.class.getSimpleName(), "Error writing thumbnail", e);
return null;
} finally {
if (out != null)
try {
out.close();
} catch (IOException e) {
Log.e(LocalStorageProvider.class.getSimpleName(), "Error closing thumbnail", e);
}
}
// It appears the Storage Framework UI caches these results quite
// aggressively so there is little reason to
// write your own caching layer beyond what you need to return a single
// AssetFileDescriptor
return new AssetFileDescriptor(ParcelFileDescriptor.open(tempFile,
ParcelFileDescriptor.MODE_READ_ONLY), 0,
AssetFileDescriptor.UNKNOWN_LENGTH);
}
@Override
public Cursor queryChildDocuments(final String parentDocumentId, final String[] projection,
final String sortOrder) throws FileNotFoundException {
// Create a cursor with either the requested fields, or the default
// projection if "projection" is null.
final MatrixCursor result = new MatrixCursor(projection != null ? projection
: DEFAULT_DOCUMENT_PROJECTION);
final File parent = new File(parentDocumentId);
for (File file : parent.listFiles()) {
// Don't show hidden files/folders
if (!file.getName().startsWith(".")) {
// Adds the file's display name, MIME type, size, and so on.
includeFile(result, file);
}
}
return result;
}
@Override
public Cursor queryDocument(final String documentId, final String[] projection)
throws FileNotFoundException {
// Create a cursor with either the requested fields, or the default
// projection if "projection" is null.
final MatrixCursor result = new MatrixCursor(projection != null ? projection
: DEFAULT_DOCUMENT_PROJECTION);
includeFile(result, new File(documentId));
return result;
}
private void includeFile(final MatrixCursor result, final File file)
throws FileNotFoundException {
final MatrixCursor.RowBuilder row = result.newRow();
// These columns are required
row.add(Document.COLUMN_DOCUMENT_ID, file.getAbsolutePath());
row.add(Document.COLUMN_DISPLAY_NAME, file.getName());
String mimeType = getDocumentType(file.getAbsolutePath());
row.add(Document.COLUMN_MIME_TYPE, mimeType);
int flags = file.canWrite() ? Document.FLAG_SUPPORTS_DELETE | Document.FLAG_SUPPORTS_WRITE
: 0;
// We only show thumbnails for image files - expect a call to
// openDocumentThumbnail for each file that has
// this flag set
if (mimeType.startsWith("image/"))
flags |= Document.FLAG_SUPPORTS_THUMBNAIL;
row.add(Document.COLUMN_FLAGS, flags);
// COLUMN_SIZE is required, but can be null
row.add(Document.COLUMN_SIZE, file.length());
// These columns are optional
row.add(Document.COLUMN_LAST_MODIFIED, file.lastModified());
// Document.COLUMN_ICON can be a resource id identifying a custom icon.
// The system provides default icons
// based on mime type
// Document.COLUMN_SUMMARY is optional additional information about the
// file
}
@Override
public String getDocumentType(final String documentId) throws FileNotFoundException {
File file = new File(documentId);
if (file.isDirectory())
return Document.MIME_TYPE_DIR;
// From FileProvider.getType(Uri)
final int lastDot = file.getName().lastIndexOf('.');
if (lastDot >= 0) {
final String extension = file.getName().substring(lastDot + 1);
final String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
if (mime != null) {
return mime;
}
}
return "application/octet-stream";
}
@Override
public void deleteDocument(final String documentId) throws FileNotFoundException {
new File(documentId).delete();
}
@Override
public ParcelFileDescriptor openDocument(final String documentId, final String mode,
final CancellationSignal signal) throws FileNotFoundException {
File file = new File(documentId);
final boolean isWrite = (mode.indexOf('w') != -1);
if (isWrite) {
return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_WRITE);
} else {
return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
}
}
@Override
public boolean onCreate() {
return true;
}}`
and then calling the function : File file = FileUtils.getFile(Context, FileUri);
Once you get a file, you can easily get any attribute.
Original Source of the files that I added : https://github.com/iPaulPro/aFileChooser/blob/master/aFileChooser/src/com/ipaulpro/afilechooser/utils/FileUtils.java
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